Synthesis of Uniformly Sized Mesoporous Silver Films and Their SERS Application

Article

Lim, Hyunsoo, Kim, Dabum, Kwon, Goomin, Kim, Hyun-Jong, You, Jungmok, Kim, Jeonghun, Eguchi, Miharu, Nanjundan, Ashok Kumar, Na, Jongbeom and Yamauchi, Yusuke. 2020. "Synthesis of Uniformly Sized Mesoporous Silver Films and Their SERS Application." The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter. 124 (43), pp. 23730-23737. https://doi.org/10.1021/acs.jpcc.0c07234
Article Title

Synthesis of Uniformly Sized Mesoporous Silver Films and Their SERS Application

ERA Journal ID35015
Article CategoryArticle
AuthorsLim, Hyunsoo, Kim, Dabum, Kwon, Goomin, Kim, Hyun-Jong, You, Jungmok, Kim, Jeonghun, Eguchi, Miharu, Nanjundan, Ashok Kumar, Na, Jongbeom and Yamauchi, Yusuke
Journal TitleThe Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter
Journal Citation124 (43), pp. 23730-23737
Number of Pages8
Year2020
PublisherAmerican Chemical Society
Place of PublicationUnited States
ISSN1932-7447
1932-7455
Digital Object Identifier (DOI)https://doi.org/10.1021/acs.jpcc.0c07234
Web Address (URL)https://pubs.acs.org/doi/10.1021/acs.jpcc.0c07234
AbstractNanostructured metal films and particles have been recently exploited as substrates for surface-enhanced Raman spectroscopy (SERS) studies because their intrinsic properties lead to substantial Raman scattering enhancement. Among metals, silver (Ag) is one of the efficient elements for SERS because of its potential for high Raman scattering enhancement and low molecular detection level. Substantial electric field enhancement takes place around the center of uniform mesopores as well as on the walls between the pores, leading to enhanced light scattering as well as SERS. However, aggregation and high surface energy, which are intrinsic to Ag structures, hamper the formation of mesoporous structures. In this study, we have successfully achieved the first synthesis of uniformly sized mesoporous silver films (MAgFs) using self-assembled polymeric micelles under controlled conditions. The synthetic conditions such as temperatures, applied potentials, and deposition times were fine-tuned to obtain the optimized mesoporous structure. The MAgF demonstrated a 10−9 M level of detection and 107 to 108 enhancement factor without any surface modification. The simple synthetic process, the potential of high performance, and a large detecting area of MAgFs enable us to realize the fabrication of a suitable SERS substrate.
KeywordsElectric fields; Metals; Raman spectroscopy; Deposition; Ions
ANZSRC Field of Research 20204018. Nanotechnology
340604. Electrochemistry
Public NotesFiles associated with this item cannot be displayed due to copyright restrictions.
Byline AffiliationsUniversity of Queensland
Kyung Hee University, Korea
Korea Institute of Industrial Technology (KITECH), Korea
Kookmin University, South Korea
Waseda University, Japan
School of Engineering
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Nanocellulose-based carbon as electrode materials for sodium-ion batteries
Ramanujam, B.T.S., Nanjundan, Ashok Kumar and Annamalai, Pratheep K.. 2020. "Nanocellulose-based carbon as electrode materials for sodium-ion batteries." Thoma, Sabu and Pottathara, Yasir Beeran (ed.) Nanocellulose Based Composites for Electronics. United Kingdom. Elsevier. pp. 295-312
Modulating the Void Space of Nitrogen-Doped Hollow Mesoporous Carbon Spheres for Lithium-Sulfur Batteries
Liu, Yang, Kong, Yueqi, Nanjundan, Ashok Kumar, Yang, Yannan, Zhou, Liang, Huang, Xiaodan and Yu, Chengzhong. 2020. "Modulating the Void Space of Nitrogen-Doped Hollow Mesoporous Carbon Spheres for Lithium-Sulfur Batteries." ChemNanoMat: chemistry of nanomaterials for energy, biology and more. 6 (6), pp. 925-929. https://doi.org/10.1002/cnma.202000168
Sandwich-Structured Ordered Mesoporous Polydopamine/MXene Hybrids as High-Performance Anodes for Lithium-Ion Batteries
Li, Tao, Ding, Bing, Wang, Jie, Qin, Zongyi, Fernando, Joseph F. S., Bando, Yoshio, Nanjundan, Ashok Kumar, Kaneti, Yusuf Valentino, Golberg, Dmitri and Yamauchi, Yusuke. 2020. "Sandwich-Structured Ordered Mesoporous Polydopamine/MXene Hybrids as High-Performance Anodes for Lithium-Ion Batteries." ACS Applied Materials and Interfaces. 12 (13), pp. 14993-15001. https://doi.org/10.1021/acsami.9b18883
Ammonia gas sensing properties of Al doped ZnO thin films
Kathwate, L.H., Umadevi, G., Kulal, P., Nagaraju, P., Dubal, D.P., Nanjundan, A.K. and Mote, V.D.. 2020. "Ammonia gas sensing properties of Al doped ZnO thin films." Sensors and Actuators A: Physical. 313. https://doi.org/10.1016/j.sna.2020.112193
Synthesis of Multiple-Twinned Pd Nanoparticles Anchored on Graphitic Carbon Nanosheets for Use as Highly-Active Multifunctional Electrocatalyst in Formic Acid and Methanol Oxidation Reactions
Huang, Huajie, Wei, Yujie, Shen, Bingfeng, Zhang, Yao, He, Haiyan, Jiang, Quanguo, Yang, Lu, Nanjundan, Ashok Kumar, Na, Jongbeom, Xu, Xingtao, Zhu, Jixin and Yamauchi, Yusuke. 2020. "Synthesis of Multiple-Twinned Pd Nanoparticles Anchored on Graphitic Carbon Nanosheets for Use as Highly-Active Multifunctional Electrocatalyst in Formic Acid and Methanol Oxidation Reactions." Advanced Materials Interfaces. 7 (11). https://doi.org/10.1002/admi.202000142
Uncovering giant nanowheels for magnesium ion–based batteries
Fan, X., Garai, S., Gaddam, R.R., Menezes, P.V., Dubal, D.P., Yamauchi, Y., Menezes, P.W., Nanjundan, A.K. and Zhao, X.S.. 2020. "Uncovering giant nanowheels for magnesium ion–based batteries." Materials Today Chemistry. 16. https://doi.org/10.1016/j.mtchem.2019.100221
Solid-state lithium–sulfur batteries: Advances, challenges and perspectives
Ding, Bing, Wang, Jie, Fan, Zengjie, Chen, Shuang, Lin, Qingyang, Lu, Xiangjun, Dou, Hui, Nanjundan, Ashok Kumar, Yushin, G., Zhang, Xiaogang and Yamauchi, Yusuke. 2020. "Solid-state lithium–sulfur batteries: Advances, challenges and perspectives." Materials Today. 40, pp. 114-131. https://doi.org/10.1016/j.mattod.2020.05.020
True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors
Chodankar, Nilesh R., Pham, Hong Duc, Nanjundan, Ashok Kumar, Fernando, Joseph F. S., Jayaramulu, Kolleboyina, Golberg, Dmitri, Han, Young-Kyu and Dubal, Deepak P.. 2020. "True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors." Small. 16 (37). https://doi.org/10.1002/smll.202002806
Graphene and molybdenum disulphide hybrids for energy applications: an update
Chodankar, N.R., Nanjundan, A.K., Losic, D., Dubal, D.P. and Baek, J.-B.. 2020. "Graphene and molybdenum disulphide hybrids for energy applications: an update." Materials Today Advances. 6. https://doi.org/10.1016/j.mtadv.2019.100053
Electrochemical Characteristics of Cobaltosic Oxide in Organic Electrolyte According to Bode Plots: Double-Layer Capacitance and Pseudocapacitance
Xu, Yinsheng, Wang, Shengping, Peng, Huiling, Yang, Zhigao, Martin, Darren J., Bund, Andreas, Nanjundan, Ashok Kumar and Yamauchi, Yusuke. 2019. "Electrochemical Characteristics of Cobaltosic Oxide in Organic Electrolyte According to Bode Plots: Double-Layer Capacitance and Pseudocapacitance." ChemElectroChem. 6 (9), pp. 2456-2463. https://doi.org/10.1002/celc.201900289
Molecular Design Strategies for Electrochemical Behavior of Aromatic Carbonyl Compounds in Organic and Aqueous Electrolytes
Peng, Huiling, Yu, Qianchuan, Wang, Shengping, Kim, Jeonghun, Rowan, Alan E., Nanjundan, Ashok Kumar, Yamauchi, Yusuke and Yu, Jingxian. 2019. "Molecular Design Strategies for Electrochemical Behavior of Aromatic Carbonyl Compounds in Organic and Aqueous Electrolytes." Advanced Science. 6 (17). https://doi.org/10.1002/advs.201900431
Reduced Graphene Oxide (rGO) Prepared by Metal-Induced Reduction of Graphite Oxide: Improved Conductive Behavior of a Poly(methyl methacrylate) (PMMA)/rGO Composite
Mallik, Abul K., Habib, Lawshan, Robel, Fataha N., Shahruzzaman, Md., Haque, Papia, Rahman, Mohammed Mizanur, Devanath, Vasudevan, Martin, Darren J., Nanjundan, Ashok Kumar, Yamauchi, Yusuke, Takafuji, Makoto and Ihara, Hirotaka. 2019. "Reduced Graphene Oxide (rGO) Prepared by Metal-Induced Reduction of Graphite Oxide: Improved Conductive Behavior of a Poly(methyl methacrylate) (PMMA)/rGO Composite." Chemistry Select. 4 (27), pp. 7954-7958. https://doi.org/10.1002/slct.201901281
Pore-tuning to boost the electrocatalytic activity of polymeric micelle-templated mesoporous Pd nanoparticles
Li, Cuiling, Iqbal, Muhammad, Jiang, Bo, Wang, Zhongli, Kim, Jeonghun, Nanjundan, Ashok Kumar, Whitten, Andrew E., Wood, Kathleen and Yamauchi, Yusuke. 2019. "Pore-tuning to boost the electrocatalytic activity of polymeric micelle-templated mesoporous Pd nanoparticles." Chemical Science. 10 (14), pp. 4054-4061. https://doi.org/10.1039/C8SC03911A
Modulating Ion Diffusivity and Electrode Conductivity of Carbon Nanotube@Mesoporous Carbon Fibers for High Performance Aluminum–Selenium Batteries
Kong, Yueqi, Nanjundan, Ashok Kumar, Liu, Yang, Song, Hao, Huang, Xiaodan and Yu, Chengzhong. 2019. "Modulating Ion Diffusivity and Electrode Conductivity of Carbon Nanotube@Mesoporous Carbon Fibers for High Performance Aluminum–Selenium Batteries." Small. 15 (51). https://doi.org/10.1002/smll.201904310
Advanced carbon materials for electrochemical energy storage
Gaddam, R.R., Kumar, Nanjundan Ashok, Narayan, Ramanuj, Raju, K.V.S.N. and Zhao, X.S.. 2019. "Advanced carbon materials for electrochemical energy storage." Pottathara, Yasir Beeran, Thomas, Sabu, Kalarikkal, Nandakumar, Grohens, Yves and Kokol, Vanja (ed.) Nanomaterials Synthesis: Design, Fabrication and Applications. India. Elsevier. pp. 385-418
Double-Layered Modified Separators as Shuttle Suppressing Interlayers for Lithium-Sulfur Batteries
Deng, Chao, Wang, Zhuowen, Wang, Shengping, Yu, Jingxian, Martin, Darren J., Nanjundan, Ashok Kumar and Yamauchi, Yusuke. 2019. "Double-Layered Modified Separators as Shuttle Suppressing Interlayers for Lithium-Sulfur Batteries." ACS Applied Materials and Interfaces. 11 (1), pp. 541-549. https://doi.org/10.1021/acsami.8b14196
Ultralong storage life of Li/MnO2 primary batteries using MnO2-(CFx)n with C–F semi-ionic bond as cathode materials
Chang, Yali, Wang, Min, Wang, Shengping, Na, Jongbeom, Bund, Andreas, Nanjundan, Ashok Kumar and Yamauchi, Yusuke. 2019. "Ultralong storage life of Li/MnO2 primary batteries using MnO2-(CFx)n with C–F semi-ionic bond as cathode materials." Electrochimica Acta. 320. https://doi.org/10.1016/j.electacta.2019.134618
Soft-Templated Synthesis of Sheet-Like Nanoporous Nitrogen-Doped Carbons for Electrochemical Supercapacitors
Allah, Abeer Enaiet, Yamauchi, Yusuke, Wang, Jie, Bando, Yoshio, Tan, Haibo, Farghali, Ahmed A., Khedr, Mohamed Hamdy, Alshehri, Abdulmohsen, Alghamdi, Yousef Gamaan, Martin, Darren, Wahab, Mohammad A., Hossain, Md. Shahriar A. and Nanjundan, Ashok Kumar. 2019. "Soft-Templated Synthesis of Sheet-Like Nanoporous Nitrogen-Doped Carbons for Electrochemical Supercapacitors." ChemElectroChem. 6 (6), pp. 1901-1907. https://doi.org/10.1002/celc.201900151
Auto-programmed heteroarchitecturing: Self-assembling ordered mesoporous carbon between two-dimensional Ti3C2Tx MXene layers
Allah, A.E., Wang, J., Kaneti, Y.V., Li, T., Farghali, A.A., Khedr, M.H., Nanjundan, A., Ding, B., Dou, H., Zhang, X., Bando, Y. and Yamauchi, Y.. 2019. "Auto-programmed heteroarchitecturing: Self-assembling ordered mesoporous carbon between two-dimensional Ti3C2Tx MXene layers." Nano Energy. 65, pp. 1-8. https://doi.org/10.1016/j.nanoen.2019.103991
From an Fe2P3 complex to FeP nanoparticles as efficient electrocatalysts for water-splitting
Yao, Shenglai, Forstner, Viktoria, Menezes, Prasanth W., Panda, Chakadola, Mebs, Stefan, Zolnhofer, Eva M., Miehlich, Matthias E., Szilvási, Tibor, Nanjundan, Ashok Kumar, Haumann, Michael, Meyer, Karsten, Grützmacher, HHansjorg and Driess, Matthias. 2018. "From an Fe2P3 complex to FeP nanoparticles as efficient electrocatalysts for water-splitting." Chemical Science. 9 (45), pp. 8590-8597. https://doi.org/10.1039/c8sc03407a
Encapsulation of NiCo2O4 in nitrogen-doped reduced graphene oxide for sodium ion capacitors
Yang, Dongfang, Zhao, Qinglan, Huang, Liqing, Xu, Binghui, Kumar, Nanjundan Ashok and Zhao, X. S.. 2018. "Encapsulation of NiCo2O4 in nitrogen-doped reduced graphene oxide for sodium ion capacitors." Journal of Materials Chemistry A. 6 (29), pp. 14146-14154. https://doi.org/10.1039/c8ta03411g
Pseudocapacitive behavior of the Fe2O3 anode and its contribution to high reversible capacity in lithium ion batteries
Xiang, Yimo, Yang, Zhigao, Wang, Shengping, Hossain, Md. Shahriar A., Yu, Jingxian, Kumar, Nanjundan Ashok and Yamauchi, Yusuke. 2018. "Pseudocapacitive behavior of the Fe2O3 anode and its contribution to high reversible capacity in lithium ion batteries." Nanoscale. 10 (37), pp. 18010-18018. https://doi.org/10.1039/c8nr04871a
Phosphorus-Based Mesoporous Materials for Energy Storage and Conversion
Mei, Peng, Kim, Jeonghun, Kumar, Nanjundan Ashok, Pramanik, Malay, Kobayashi, Naoya, Sugahara, Yoshiyuki and Yamauchi, Yusuke. 2018. "Phosphorus-Based Mesoporous Materials for Energy Storage and Conversion." Joule. 2 (11), pp. 2289-2306. https://doi.org/10.1016/j.joule.2018.08.001
Functionalized graphene-based, metal-free electrocatalysts for oxygen reduction reaction in fuel cells
Kumar, Nanjundan Ashok and Baek, Jong-Beom. 2018. "Functionalized graphene-based, metal-free electrocatalysts for oxygen reduction reaction in fuel cells." Dai, Liming (ed.) Carbon-Based Metal-Free Catalysts: Design and Applications. Germany. Wiley-VCH Verlag GmbH & Co. KGaA. pp. 529-554
High surface area nanoporous carbon derived from high quality jute from Bangladesh
Khan, Junayet Hossain, Lin, Jianjian, Young, Christine, Matsagar, Babasaheb M., Wu, Kevin C.W., Dhepe, Paresh L., Islam, Md Tofazzal, Rahman, Md Mahbubur, Shrestha, Lok Kumar, Alshehri, Saad M., Ahamad, Tansir, Salunkhe, Rahul R., Kumar, Nanjundan Ashok, Martin, Darren J., Yamauchi, Yusuke and Hossain, Md Shahriar A.. 2018. "High surface area nanoporous carbon derived from high quality jute from Bangladesh." Materials Chemistry and Physics. 216, pp. 491-495. https://doi.org/10.1016/j.matchemphys.2018.05.082
Carbon nanoparticle-based three-dimensional binder-free anode for rechargeable alkali-ion batteries
Gaddam, Rohit Ranganathan, Kumar, Nanjundan Ashok and Zhao, X.S.. 2018. "Carbon nanoparticle-based three-dimensional binder-free anode for rechargeable alkali-ion batteries." Materials Today Energy. 8, pp. 29-36. https://doi.org/10.1016/j.mtener.2018.02.005
Controlled synthesis of mesoporous nitrogen-doped carbons with highly ordered two-dimensional hexagonal mesostructures and their chemical activation
Allah, Abeer Enaiet, Tan, Haibo, Xu, Xingtao, Farghali, Ahmed A., Khedr, Mohamed Hamdy, Alshehri, Abdulmohsen Ali, Bando, Yoshio, Nanjundan, Nanjundan Ashok and Yamauchi, Y.. 2018. "Controlled synthesis of mesoporous nitrogen-doped carbons with highly ordered two-dimensional hexagonal mesostructures and their chemical activation." Nanoscale. 10 (26), pp. 12398-12406. https://doi.org/10.1039/c8nr02647e
Graphene-Wrapped Nanoporous Nickel-Cobalt Oxide Flakes for Electrochemical Supercapacitors
Alowasheeir, Azhar, Zakaria, Mohamed B., Lin, Jianjian, Chikyow, Toyohiro, Martin, Darren J., Alghamdi, Yousef Gamaan, Alshehri, Abdulmohsen Ali, Bando, Yoshio, Hossain, Md. Shahriar A., Wu, Kevin C.-W., Kumar, Nanjundan Ashok and Yamauchi, Yusuke. 2018. "Graphene-Wrapped Nanoporous Nickel-Cobalt Oxide Flakes for Electrochemical Supercapacitors." Chemistry Select. 3 (29), pp. 8505-8510. https://doi.org/10.1002/slct.201801174
Synthesis of Hollow Co–Fe Prussian Blue Analogue Cubes by using Silica Spheres as a Sacrificial Template
Azhar, Alowasheeir, Zakaria, Mohamed B., Ebeid, El-Zeiny M., Chikyow, Toyohiro, Bando, Yoshio, Alshehri, Abdulmohsen, Alghamdi, Yousef Gamaan, Cai, Ze-Xing, Kumar, Nanjundan Ashok, Lin, Jianjian, Kim, Hansu and Yamauchi, Yusuke. 2018. "Synthesis of Hollow Co–Fe Prussian Blue Analogue Cubes by using Silica Spheres as a Sacrificial Template." ChemistryOpen. 7 (8), pp. 599-603. https://doi.org/10.1002/open.201800120
Spinifex nanocellulose derived hard carbon anodes for high-performance sodium-ion batteries
Gaddam, Rohit Ranganathan., Jiang, Edward, Amiralian, Nasim, Annamalai, Pratheep K., Martin, Darren J., Nanjundan, Nanjundan and Zhao, X. S.. 2017. "Spinifex nanocellulose derived hard carbon anodes for high-performance sodium-ion batteries." Sustainable Energy & Fuels. 1 (5), pp. 1090-1097. https://doi.org/10.1039/c7se00169j
Pre-sodiated nickel cobaltite for high-performance sodium-ion capacitors
Yang, Dongfang, Sun, Xiaoming, Lim, Kyungmi, Gaddam, Rohit Ranganathan., Kumar, Nanjundan Ashok, Kang, Kisuk and Zhao, X. S.. 2017. "Pre-sodiated nickel cobaltite for high-performance sodium-ion capacitors." Journal of Power Sources. 362, pp. 358-365. https://doi.org/10.1016/j.jpowsour.2017.07.053
Electrocapacitive properties of nitrogen-containing porous carbon derived from cellulose
Lu, Hao, Sun, Xiaoming, Gaddam, Rohit R., Kumar, Nanjundan A. and Zhao, X. S.. 2017. "Electrocapacitive properties of nitrogen-containing porous carbon derived from cellulose." Journal of Power Sources. 360, pp. 634-641. https://doi.org/10.1016/j.jpowsour.2017.05.109
Porphyrin-graphene oxide frameworks for long life sodium ion batteries
Nanjundan Ashok, Nanjundan, Gaddam, Rohit Ranganathan, Suresh, Moorthy, Varanasi, Srinivasa Rao, Yang, Dongfang, Bhatia, Suresh K. and Zhao, X. S.. 2017. "Porphyrin-graphene oxide frameworks for long life sodium ion batteries." Journal of Materials Chemistry A. 5 (25), pp. 13204-13211. https://doi.org/10.1039/c7ta02370g
Capacitance-enhanced sodium-ion storage in nitrogen-rich hard carbon
Gaddam, Rohit Ranganathan, Niaei, Amir H. Farokh, Hankel, Marlies, Searles, Debra J., Nanjundan, Nanjundan Ashok and Zhao, X.S.. 2017. "Capacitance-enhanced sodium-ion storage in nitrogen-rich hard carbon." Journal of Materials Chemistry A. 5 (42), pp. 22186-22192. https://doi.org/10.1039/c7ta06754b
A Hybrid Mg2+/Li+ Battery Based on Interlayer-Expanded MoS2/Graphene Cathode
Fan, Xin, Gaddam, Rohit Ranganathan, Kumar, Nanjundan Ashok and Zhao, Xiu Song. 2017. "A Hybrid Mg2+/Li+ Battery Based on Interlayer-Expanded MoS2/Graphene Cathode." Advanced Energy Materials. 7 (19). https://doi.org/10.1002/aenm.201700317
Lithium-storage Properties of Gallic Acid-Reduced Graphene Oxide and Silicon-Graphene Composites
Xu, Binghui, Zhang, Jintao, Gu, Yi, Zhang, Zhi, Al Abdulla, Wael, Nanjundan Ashok, Kumar and Zhao, X. S.. 2016. "Lithium-storage Properties of Gallic Acid-Reduced Graphene Oxide and Silicon-Graphene Composites." Electrochimica Acta. 212, pp. 473-480. https://doi.org/10.1016/j.electacta.2016.06.116
Functionalization of chemically derived graphene for improving its electrocapacitive energy storage properties
Lei, Zhibin, Zhang, Jintao, Zhang, Li Li, Kumar, Nanjundan Ashok and Zhao, X.S.. 2016. "Functionalization of chemically derived graphene for improving its electrocapacitive energy storage properties ." Energy and Environmental Science. 9 (6), pp. 1891-1930. https://doi.org/10.1039/c6ee00158k
Sodium ion storage in reduced graphene oxide
Kumar, Nanjundan Ashok, Gaddam, Rohit Ranganathan, Varanasi, Srinivasa Rao, Yang, Dongfang, Bhatia, Suresh K. and Zhao, X.S.. 2016. "Sodium ion storage in reduced graphene oxide." Electrochimica Acta. 214, pp. 319-325. https://doi.org/10.1016/j.electacta.2016.08.058
Biomass derived carbon nanoparticle as anodes for high performance sodium and lithium ion batteries
Gaddam, Rohit Ranganathan, Yang, Dongfang, Narayan, Ramanuj, Raju, KVSN, Kumar, Nanjundan Ashok and Zhao, X.S.. 2016. "Biomass derived carbon nanoparticle as anodes for high performance sodium and lithium ion batteries." Nano Energy. 26, pp. 346-352. https://doi.org/10.1016/j.nanoen.2016.05.047
Iron metal induced deoxygenation of graphite oxide nanosheets-insights on the capacitive properties of binder-free electrodes
Kumar, Nanjundan Ashok, Togami, Makoto, Oishi, Yudai, Tominaga, Masato, Takafuji, Makoto and Ihara, Hirotaka. 2015. "Iron metal induced deoxygenation of graphite oxide nanosheets-insights on the capacitive properties of binder-free electrodes." RSC Advances: an international journal to further the chemical sciences. 5 (30), pp. 23367-23373. https://doi.org/10.1039/c4ra15901b
Graphene and molybdenum disulfide hybrids: Synthesis and applications
Kumar, Nanjundan Ashok, Dar, Mushtaq Ahmad, Gul, Rukhsana and Baek, Jong-Beom. 2015. "Graphene and molybdenum disulfide hybrids: Synthesis and applications." Materials Today. 18 (5), pp. 286-298. https://doi.org/10.1016/j.mattod.2015.01.016
Doped graphene supercapacitors
Kumar, Nanjundan Ashok and Baek, Jong-Beom. 2015. "Doped graphene supercapacitors." Nanotechnology. 26 (49). https://doi.org/10.1088/0957-4484/26/49/492001
Graphene supported non-precious metal-macrocycle catalysts for oxygen reduction reaction in fuel cells
Choi, Hyun-Jung, Kumar, Nanjundan Ashok and Baek, Jong-Beom. 2015. "Graphene supported non-precious metal-macrocycle catalysts for oxygen reduction reaction in fuel cells." Nanoscale. 7 (16), pp. 6991-6998. https://doi.org/10.1039/c4nr06831a
Nitrogen-doped reduced graphene oxide electrodes for electrochemical supercapacitors
Nolan, Hugo, Mendoza-Sanchez, Beatriz, Kumar, Nanjundan Ashok, McEvoy, Niall, O'Brien, Sean, Nicolosi, Valeria and Duesberg, Georg S.. 2014. "Nitrogen-doped reduced graphene oxide electrodes for electrochemical supercapacitors." Physical Chemistry Chemical Physics. 16 (6), pp. 2280-2284. https://doi.org/10.1039/c3cp54877e
Electrochemical supercapacitors from conducting polyaniline-graphene platforms
Kumar, Nanjundan Ashok and Baek, Jong-Beom. 2014. "Electrochemical supercapacitors from conducting polyaniline-graphene platforms." Chemical Communications. 50 (48), pp. 6298-6308. https://doi.org/10.1039/c4cc01049c
Nanosilicon-based thick negative composite electrodes for lithium batteries with graphene as conductive additive
Nguyen, Binh Phuong Nha, Kumar, Nanjundan Ashok, Gaubicher, Joël, Duclairoi, Florence, Brousse, Thierry, Crosnier, Olivier, Dubois, Lionel, Bidan, Gérard, Guyomard, Dominique and Lestriez, Bernard. 2013. "Nanosilicon-based thick negative composite electrodes for lithium batteries with graphene as conductive additive." Advanced Energy Materials. 3 (10), pp. 1351-1357. https://doi.org/10.1002/aenm.201300330
Functionalisation of graphene surfaces with downstream plasma treatments
McEvoy, Niall, Nolan, Hugo, Kumar, Nanjundan Ashok, Hallam, Toby and Duesberg, Georg S.. 2013. "Functionalisation of graphene surfaces with downstream plasma treatments." Carbon. 54, pp. 283-290. https://doi.org/10.1016/j.carbon.2012.11.040
Plasma-assisted simultaneous reduction and nitrogen doping of graphene oxide nanosheets
Kumar, Nanjundan Ashok, Nolan, Hugo, McEvoy, Niall, Rezvani, Ehsan, Doyle, Richard L., Lyons, Michael E. G. and Duesberg, Georg S.. 2013. "Plasma-assisted simultaneous reduction and nitrogen doping of graphene oxide nanosheets." Journal of Materials Chemistry A. 1 (14), pp. 4431-4435. https://doi.org/10.1039/c3ta10337d
Synthesis of high quality reduced graphene oxide nanosheets free of paramagnetic metallic impurities
Kumar, Nanjundan Ashok, Gambarelli, Serge, Duclairoir, Florence, Bidan, Gérard and Dubois, Lionel. 2013. "Synthesis of high quality reduced graphene oxide nanosheets free of paramagnetic metallic impurities." Journal of Materials Chemistry A. 1 (8), pp. 2789-2794. https://doi.org/10.1039/c2ta01036d
Polyaniline-grafted reduced graphene oxide for efficient electrochemical supercapacitors
Kumar, Nanjundan Ashok, Choi, Hyun-Jung, Shin, Yeon Ran, Chang, Dong Wook, Dai, Liming and Baek, Jong-Beom. 2012. "Polyaniline-grafted reduced graphene oxide for efficient electrochemical supercapacitors." ACS Nano. 6 (2), pp. 1715-1723. https://doi.org/10.1021/nn204688c
Electrochemical supercapacitors based on a novel graphene/conjugated polymer composite system
Kumar, Nanjundan Ashok, Choi, Hyun Jung, Bund, Andreas, Baek, Jong-Beom and Jeong, Yeon Tae. 2012. "Electrochemical supercapacitors based on a novel graphene/conjugated polymer composite system." Journal of Materials Chemistry. 22 (24), pp. 12268-12274. https://doi.org/10.1039/c2jm30701d
Preparation and characterization of carbon nanotube-grafted-chitosan - Natural hydroxyapatite composite for bone tissue engineering
Venkatesan, Jayachandran, Qian, Zhong-Ji, Ryu, BoMi, Kumar, Nanjundan Ashok and Kim, Se-Kwon. 2011. "Preparation and characterization of carbon nanotube-grafted-chitosan - Natural hydroxyapatite composite for bone tissue engineering." Carbohydrate Polymers. 83 (2), pp. 569-577. https://doi.org/10.1016/j.carbpol.2010.08.019
Immobilization of Mn-doped ZnS quantum dots on surface functionalized multi-walled carbon nanotubes: Studies on their optical properties
Kumar, Nanjundan Ashok, Kim, Sung Hun, Kwon, Tae Ha, Lim, Kwon Taek and Jeong, Yeon Tae. 2011. "Immobilization of Mn-doped ZnS quantum dots on surface functionalized multi-walled carbon nanotubes: Studies on their optical properties." Synthesis and Reactivity in Inorganic, Metal Organic, and Nano Metal Chemistry. 41 (2), pp. 121-126. https://doi.org/10.1080/15533174.2010.538022
Highly conducting and flexible few-walled carbon nanotube thin film
Kumar, Nanjundan Ashok, Jeon, In-Yup, Sohn, Gyung-Joo, Jain, Rahul, Kumar, Satish and Baek, Jong-Beom. 2011. "Highly conducting and flexible few-walled carbon nanotube thin film." ACS Nano. 5 (3), pp. 2324-2331. https://doi.org/10.1021/nn103630y
Covalent functionalization of graphene oxide with polyglycerol and their use as templates for anchoring magnetic nanoparticles
Pham, Tuan Anh, Kumar, Nanjundan Ashok and Jeong, Yeon Tae. 2010. "Covalent functionalization of graphene oxide with polyglycerol and their use as templates for anchoring magnetic nanoparticles." Synthetic Metals. 160 (17-18), pp. 2028-2036. https://doi.org/10.1016/j.synthmet.2010.07.034
Facile preparation of boronic acid functionalized Fe-core/Au-shell magnetic nanoparticles for covalent immobilization of adenosine
Pham, Tuan Anh, Kumar, Nanjundan Ashok and Jeong, Yeon Tae. 2010. "Facile preparation of boronic acid functionalized Fe-core/Au-shell magnetic nanoparticles for covalent immobilization of adenosine." Colloids and Surfaces A: Physicochemical and Engineering Aspects. 370 (1-3), pp. 95-101. https://doi.org/10.1016/j.colsurfa.2010.08.053
Fabrication of conducting polyaniline-multiwalled carbon nanotube nanocomposites and their use as templates for loading gold nanoparticles
Kumar, Nanjundan Ashok and Jeong, Yeon Tae. 2010. "Fabrication of conducting polyaniline-multiwalled carbon nanotube nanocomposites and their use as templates for loading gold nanoparticles." Polymer International. 59 (10), pp. 1367-1374. https://doi.org/10.1002/pi.2876
Functionalization of multi-walled carbon nanotubes with cysteamine for the construction of CNT/gold nanoparticle hybrid nanostructures
Nanjundan, Ashok Kumar, Kim, Sung Hun, Kim, Jong Su, Kim, Jong Tae and Jeong, Yeon Tae. 2009. "Functionalization of multi-walled carbon nanotubes with cysteamine for the construction of CNT/gold nanoparticle hybrid nanostructures." Surface Review and Letters. 16 (3), pp. 487-492. https://doi.org/10.1142/S0218625X09012895
Surface functionalization of multiwalled carbon nanotubes with poly(3,4-propylenedioxythiophene) and preparation of its random copolymers: New hybrid materials
Kumar, Nanjundan Ashok, Kim, Sung Hun, Cho, Byung Gwon, Lim, Kwon Taek and Jeong, Y.. 2009. "Surface functionalization of multiwalled carbon nanotubes with poly(3,4-propylenedioxythiophene) and preparation of its random copolymers: New hybrid materials." Colloid and Polymer Science: Kolloid-Zeitschrift und Zeitschrift fuer Polymere. 287 (1), pp. 97-102. https://doi.org/10.1007/s00396-008-1945-4
Novel amino-acid-based polymer/multi-walled carbon nanotube bio-nanocomposites: Highly water dispersible carbon nanotubes decorated with gold nanoparticles
Kumar, Nanjundan Ashok, Bund, Andreas, Cho, Byung Gwon, Lim, Kwon Taek and Jeong, Yeon Tae. 2009. "Novel amino-acid-based polymer/multi-walled carbon nanotube bio-nanocomposites: Highly water dispersible carbon nanotubes decorated with gold nanoparticles." Nanotechnology. 20 (22). https://doi.org/10.1088/0957-4484/20/22/225608
Architectures of bilayered gold nanoparticles on UV cross-linked poly(4-vinylpyridine) thin films
Kim, Min Sung, Kumar, Nanjundan, Ashok, Kim, Jong Su, Kim, Jong Tae and Jeong, Yeon Tae. 2009. "Architectures of bilayered gold nanoparticles on UV cross-linked poly(4-vinylpyridine) thin films." Journal of Nanoscience and Nanotechnology. 9 (12), pp. 7025-7028. https://doi.org/10.1166/jnn.2009.1629
r-2,c-6-Bis(3-methoxy­phen­yl)-t-3,t-5-dimethyl­piperidin-4-one
Parthiban, P., Ramkumar, V., Kumar, N. A., Kim, J. S. and Jeong, Y. T.. 2008. "r-2,c-6-Bis(3-methoxy­phen­yl)-t-3,t-5-dimethyl­piperidin-4-one." Acta Crystallographica Section E: Crystallographic Communications. 64 (8). https://doi.org/10.1107/S1600536808023490
Study on cluster formation of poly 2-hydroxyethyl methacrylate functionalized single-walled carbon nanotubes
Kumar, Ashok Nanjundan, Kim, Sung Hun, Kim, Jong Tae, Lim, Kwon Taek and Jeong, Yeon Tae. 2008. "Study on cluster formation of poly 2-hydroxyethyl methacrylate functionalized single-walled carbon nanotubes." Surface Review and Letters. 15 (5), pp. 689-697. https://doi.org/10.1142/S0218625X0801186X
Preparation of poly 2-hydroxyethyl methacrylate functionalized carbon nanotubes as novel biomaterial nanocomposites
Nanjundan, Nanjundan Ashok, Ganapathy, Hullathy Subban, Kim, Jong Su, Jeong, Yong Seok and Jeong, Yeon Tae. 2008. "Preparation of poly 2-hydroxyethyl methacrylate functionalized carbon nanotubes as novel biomaterial nanocomposites." European Polymer Journal. 44 (3), pp. 579-586. https://doi.org/10.1016/j.eurpolymj.2007.12.009
A facile synthesis, antibacterial, and antitubercular studies of some piperidin-4-one and tetrahydropyridine derivatives
Aridoss, Gopalakrishnan, Amirthaganesan, Shanmugasundaram, Nanjundan, Nanjundan Ashok, Kim, Jong Tae, Lim, Kwon Taek, Kabilan, Senthamaraikannan and Jeong, Yeon Tae. 2008. "A facile synthesis, antibacterial, and antitubercular studies of some piperidin-4-one and tetrahydropyridine derivatives." Bioorganic and Medicinal Chemistry Letters. 18 (24), pp. 6542-6548. https://doi.org/10.1016/j.bmcl.2008.10.045
Immobilization of Tris-(8-hydroxyquinoline) aluminum onto P4VP polymer thin films by UV irradiation cross-linking
Park, Young Hwan, Nanjundan Ashok, Kumar, Kim, Ji Young, Kim, Jong Tae, Lim, Kwon Taek and Jeong, Yeon Tae. 2007. "Immobilization of Tris-(8-hydroxyquinoline) aluminum onto P4VP polymer thin films by UV irradiation cross-linking." European Polymer Journal. 43 (12), pp. 5034-5039. https://doi.org/10.1016/j.eurpolymj.2007.07.040