Article
Chemistry, Multidisciplinary
Yanfang Hu, Yonglong Li, Linfeng Yu, Yuying Zhang, Yuming Lai, Wei Zhang, Wei Xie
Summary: A universal assembly methodology for preparing hetero-superstructures is introduced in this study, enabling the assembly of building block materials without the need for molecular linkers and utilizing surface property modulation to achieve self-organization. The resulting superstructures exhibit superior photocatalytic activity and Raman scattering performance.
Article
Chemistry, Multidisciplinary
Jack S. Googasian, George R. Lewis, Zachary J. Woessner, Emilie Ringe, Sara E. Skrabalak
Summary: Chiral plasmonic nanocrystals with varied symmetries were synthesized through overgrowth, highlighting the importance of chiral molecule adsorption at kink sites.
CHEMICAL COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Dongfang Li, Weina Han, Yanping Yuan, Yan Zhao, Zhaochen Cheng, Jimin Chen
Summary: Active control over the optical response has been achieved by using core-shell nanostructures combining plasmonic nanostructures with an active phase change material. The size and crystallization degree of the phase change shell within each isolated core-shell nanostructure can be actively controlled, enabling tunable optical response. These Au@GST core-shell hetero-nanostructures show high sensitivity to the size of nanoparticles and have the potential for applications in nanophotonic devices.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Cheng Wang, Pin-Jie Chen, Chun-Hway Hsueh
Summary: In this study, an Au-Cu-Si activation layer was successfully used as a substitute for the commonly used gold layer in propagating surface plasmon resonance sensors. The results showed that Au-based TFMG is feasible and has advantages of lower cost and better performance.
Article
Chemistry, Physical
Vamakshi Yadav, Soojin Jeong, Xingchen Ye, Christina W. Li
Summary: In this study, the extent of galvanic replacement reactions between Ag-0 nanoparticles and Pd, Pt, and Au ions was tuned through tailored complexation of metal cations with organic amine and phosphine ligands. This synthetic method serves as a general strategy to synthesize bimetallic Ag@AgM or Ag@M (M = Pd, Pt, Au) core-shell nanoparticles and exhibits good mass-activity in the electrocatalytic hydrogen evolution reaction.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Pin-Jie Chen, Chun-Hway Hsueh
Summary: The study aimed to fabricate periodic nanostructures on Au-based TFMGs with different crystallinities for SERS applications. Results showed that Raman intensity increased with higher heat treatment temperatures due to reduced grain boundary area caused by grain growth.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Jie Wang, Zijia Zhang, Hailei Zhao
Summary: The development of a unique SnS2-SnS/rGO electrode addresses the issues of low intrinsic conductivity and mediocre ion transport, leading to improved lithium-ion transport and accelerated electrode reaction kinetics. The design also ensures robust structural durability and excellent cycling stability.
Article
Chemistry, Multidisciplinary
Qiushun Zou, Jian Ou-Yang, Xiaoyi She, Yang Shen, Chongjun Jin
Summary: A novel approach is demonstrated for manufacturing various 3D freestanding plasmonic nanostructures on elastic substrates using shadow metal-sputtering and plastic deformations. This method allows accurate manipulation of the morphology, size, curvature, and bend orientation of 3D nanostructures, providing a new possibility for high-resolution and reliable fabrication of 3D freestanding plasmonic metamaterials.
Article
Optics
Yu Hao, Liwei Wang, Baohua Zhu, Yimin Zhang, Yuzong Gu
Summary: In this study, the NLO properties of reduced graphene oxide (rGO) were regulated using a functionalizing strategy with quantum dots (QDs) of gold nanospheres and Au@CdS core-shells. The saturation absorption of rGO weakened with the addition of gold nanospheres, switching to reverse saturation absorption with Au@CdS core-shells. The strength of reverse saturation absorption was tunable with the size of Au@CdS core-shells, while the nonlinear susceptibility was enhanced when combined with Au@CdS core-shells compared to complex gold. The regulation effect was explained by proposing a charge transfer mechanism.
Article
Chemistry, Multidisciplinary
Takeru Iwahori, Ayana Mizuno, Atsushi Ono, Yoichi Uehara, Satoshi Katano
Summary: The investigation focused on the thermally and photoinduced structural and chemical changes of a polyvinylpyrrolidone-covered silver nanocube array on Au(111). Results showed that annealing the AgNCs led to rounded corners, decreased height, and lateral expansion, while PVP decomposed into nanocarbons and was eliminated from the gap between AgNCs. Further annealing caused decreases in Raman signal intensity and AgNC height due to sintering. The photochemical transformation of PVP to nanocarbons without affecting the AgNCs was also confirmed under intense laser irradiation.
Article
Chemistry, Multidisciplinary
Ji Feng, Dongdong Xu, Fan Yang, Jinxing Chen, Chaolumen Wu, Yadong Yin
Summary: The introduction of a thin layer of metal with considerable lattice mismatch can effectively induce the nucleation of well-defined Au islands on Au nanocrystal seeds, leading to complex Au nanostructures with morphologies tunable from core-satellites to tetramers, trimers, and dimers by controlling the interfacial energy between the seed and the deposited material, the oxidative ripening, and the surface diffusion of metal precursors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Menglei Wang, Fulin Jia, Jianxiao Gong, Yunsheng Xia
Summary: This article presents an in situ decomposition-assembly strategy for the versatile fabrication of metal sulfide supraparticles (SPs), which have various applications in biomedical, catalysis, and battery materials. The strategy involves the reaction of cysteine molecules and metal cations to form coordination polymers, which are then decomposed to generate small-sized metal sulfide nanocrystals. These nanocrystals self-assemble each other driven by the elimination of high surface energy and van der Waals attraction, leading to the formation of SP products. The size of SPs can be easily tuned by adjusting the proportion of cysteine and metal ions, and different properties and hybrid structures can be achieved.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Cedric Uhlmann, Thomas J. Feuerstein, Tim P. Seifert, Andre P. Jung, Michael T. Gamer, Ralf Koeppe, Sergei Lebedkin, Manfred M. Kappes, Peter W. Roesky
Summary: The versatile metalloligand was converted into early-late heterotetrametallic complexes, which showed photoluminescence with either remarkably different or similar features compared to related solely coinage metal containing acetylide amidinate complexes.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Fanpeng Kong, Rutong Si, Ning Chen, Qi Wang, Junjie Li, Geping Yin, Meng Gu, Jiajun Wang, Li-Min Liu, Xueliang Sun
Summary: The research suggests that hetero-nuclear precious-non-precious dual metal atom catalysts (Au-Co) exhibit outstanding activity in the acidic oxygen reduction reaction, with a peak power density of 360 mW cm(-2). The Co-N2C2 with axial Au atom moieties act as active sites, further enhancing the performance of the ORR.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Lucheng Peng, Anirban Dutta, Renguo Xie, Wensheng Yang, Narayan Pradhan
ACS ENERGY LETTERS
(2018)
Article
Chemistry, Physical
Sumit Kumar Dutta, Anirban Dutta, Samrat Das Adhikari, Narayan Pradhan
ACS ENERGY LETTERS
(2019)
Article
Chemistry, Multidisciplinary
Anirban Dutta, Rakesh Kumar Behera, Poulami Pal, Sujoy Baitalik, Narayan Pradhan
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Physical
Suman Bera, Amlan Roy, Amit K. Guria, Sagar Mitra, Narayan Pradhan
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2019)
Article
Chemistry, Physical
Anirban Dutta, Narayan Pradhan
ACS ENERGY LETTERS
(2019)
Article
Chemistry, Physical
Anirban Dutta, Rakesh Kumar Behera, Narayan Pradhan
ACS ENERGY LETTERS
(2019)
Article
Chemistry, Physical
Anirban Dutta, Rakesh Kumar Behera, Sourav Deb, Sujoy Baitalik, Narayan Pradhan
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2019)
Article
Chemistry, Physical
Samrat Das Adhikari, Amit K. Guria, Narayan Pradhan
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2019)
Article
Nanoscience & Nanotechnology
Harshal Agrawal, Biplab K. Patra, Thomas Altantzis, Annick De Backer, Erik C. Garnett
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Biplab K. Patra, Harshal Agrawal, Jian-Yao Zheng, Xun Zha, Alex Travesset, Erik C. Garnett
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Suvodeep Sen, Suman Bera, Amit K. Guria, Narayan Pradhan
Summary: Superionic conductor type catalytic growths are typically conducted above the phase transition temperature of the catalyst. In the case of Ag2S, the beta phase above 170 degrees C acts as a superionic conductor to catalyze the growth of II-VI semiconductors. The use of Ag(0)-Ag2S coupled structures as catalysts results in the formation of Ag-Ag2S-ZnS triple material heterostructures with controlled catalytic growth.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Zhoumuyan Geng, Johanna Theenhaus, Biplab K. Patra, Jian-Yao Zheng, Joris Busink, Erik C. Garnett, Said R. K. Rodriguez
Summary: The study demonstrates that even a modest numerical aperture can artificially generate Fano resonances and Rabi splittings. These artificial features may obscure the anticrossing of a strongly coupled light-matter system.
Article
Chemistry, Physical
Isabelle M. Palstra, Ilse Maillette de Buy Wenniger, Biplab K. Patra, Erik C. Garnett, A. Femius Koenderink
Summary: In this study, unbiased Bayesian inference analysis methods were used to analyze intermittency in intensity and fluorescence lifetime of CsPbBr3 perovskite quantum dots. It was found that the quantum dots display a variety of gray states where brightness correlates inversely with decay rate, confirming the multiple recombination centers model. The research also revealed a pattern in the switching behavior of the dots, with a tendency to return to the bright state before transitioning to a dim state and exploring the entire set of states available when choosing a dim state.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Manav R. Kar, Smaranika Ray, Biplab K. Patra, Saikat Bhaumik
Summary: Metal halide perovskite nanocrystals have unique photophysical properties that make them suitable for a wide range of applications, but their instability in ambient atmosphere is a major challenge. Core@shell semiconducting nanostructures can enhance stability and improve optical properties, offering advantages in optoelectronic and bioimaging applications. The synthesis of core@shell nanocrystals faces challenges, but holds potential for further development in various fields.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Physical
Suman Bera, Rakesh Kumar Behera, Samrat Das Adhikari, Amit K. Guria, Narayan Pradhan
Summary: Physical insights related to ion equilibrium in the synthesis of lead halide perovskite nanocrystals play a key role in regulating the phase stability and luminescence intensity of these emerging materials. While the different reaction processes controlling the formation of CsPbX3 nanocrystals are well understood, growth kinetics related to their formation have not been established yet, emphasizing the urgent need for a more fundamental understanding.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)