Article
Optics
Xiao Jin, Wenyong Chen, Xiaoying Li, Haichao Guo, Qinghua Li, Zhenghe Zhang, Tingting Zhang, Bing Xu, Dongyu Li, Yinglin Song
Summary: This study introduces device-grade thick-shell CdZnSe/ZnSe/ZnS quantum dots with high PL quantum yield in QD film, which effectively prevents undesired inter-dot energy transfer, preserving their superior emission properties. White light-emitting diodes (WLEDs) integrated with multiple CdZnSe/ZnSe/ZnS QDs cover the visible spectrum and deliver high-quality color rendering index.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Paulina Jaimes, Tsumugi Miyashita, Tian Qiao, Kefu Wang, Ming Lee Tang
Summary: In this study, an inverse Type-I heterostructure with an inner InP shell was used for triplet-triplet annihilation-based photon upconversion. The addition of a ZnS shell on ZnSe/InP core/shell particles increased the photoluminescence quantum yield and transmitter triplet lifetime, while decreasing the rate of triplet energy transfer. The photon upconversion quantum yield of the ZnSe/InP/ZnS nanocrystals was found to be around 4.0%, suggesting their potential for converting near-infrared photons to visible light.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Paulina Jaimes, Tsumugi Miyashita, Tian Qiao, Kefu Wang, Ming Lee Tang
Summary: In this work, nanocrystals with an inner InP shell were used for triplet-triplet annihilation-based photon upconversion. The InP-based nanocrystals are earth-abundant and can be synthetically tuned to absorb in the NIR window. A two monolayer ZnS shell was used to passivate surface defects and improve the photoluminescence quantum yield of the InP nanocrystals. The ZnSe/InP/ZnS nanocrystals showed promising results in photon upconversion and can potentially convert NIR photons to visible light.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Shaojie Liu, Yufei Shu, Meiyi Zhu, Haiyan Qin, Xiaogang Peng
Summary: Most bulk semiconductors show an increase in band-gap energy with decreasing temperature. However, semiconductor quantum dots (QDs) exhibit non-monotonic temperature dependence of the emission energy at low temperatures. This study uses stable and efficient CdSe/CdS/ZnS QDs as a model system to quantitatively explain the origins of the anomalous emission red-shift at temperatures below 40 K. The red-shift is attributed to the temperature-dependent population of band-edge exciton fine levels, enhanced electron-optical phonon coupling due to increasing population of dark excitons, and temperature-dependent electron-acoustic phonon coupling.
Article
Nanoscience & Nanotechnology
Hongyue Wang, Jialiang Gao, Miao Zhang, Peng Liu, Yangyang Guo, Huixin Li, Guanguan Zhao, Siliang Hu, Zeyi Cheng, Jianyang Zang, Ruijuan Wen, Taihong Liu, Yu Tong, Zhenhua Sun, Hongqiang Wang
Summary: This work systematically investigates the spectroscopic properties of Mn2+-doped ZnSe/ZnS core-shell quantum dots (QDs). It is found that increasing the doping concentration can enhance the photoluminescence quantum yield (PL QY) of the Mn2+ dopant, but excessive doping leads to the magnetic coupling of Mn2+ ions, resulting in abnormal variations in the photoluminescence intensity and linewidth with temperature.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
O. Kulakovich, L. Gurinovich, Hui Li, A. Ramanenka, L. Trotsiuk, A. Muravitskaya, Jing Wei, Hongbo Li, N. Matveevskaya, D. Guzatov, S. Gaponenko
Summary: The study reports the impact of gold and silver plasmonic films on the photoluminescence and photostability of InP/ZnSe/ZnSeS/ZnS nanocrystals. Gold enhances photostability by reducing exciton lifetime, while silver reduces photostability without affecting photoluminescence intensity. Adjusting excitation wavelength and using a polyelectrolyte spacer can enhance luminescence intensity.
Article
Chemistry, Physical
Jiakuan Zhang, Chuyue Li, Jiongzhao Li, Xiaogang Peng
Summary: Size- and shape-controlled CdSe/ZnSe core/shell and CdSe/ZnSe/ZnS core/shell/shell nanocrystals with zinc-blende structure are synthesized. The ligand strain between the inorganic crystal surface and organic ligands plays a key role in ZnSe epitaxy. The lattice strain between the CdSe and ZnSe affects the photoluminescence of CdSe/ZnSe/ZnS core/shell/shell QDs.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Tran Thi Thu Huong, Nguyen Thu Loan, Dinh Xuan Loc, Ung Thi Dieu Thuy, Olya Stoilova, Nguyen Quang Liem
Summary: Fibrous polymer hybrids containing Mn-doped ZnSe/ZnS core/shell nanocrystals were successfully prepared by electrospinning, showing strong and characteristic luminescence suitable for designing emitters for solid-state illumination sources and lighting devices.
Article
Chemistry, Multidisciplinary
Hyo-Geun Kwon, Taesoo Lee, Kihyo Kim, Do-Hyun Kim, Haewoon Seo, O-Pil Kwon, Jeonghun Kwak, Sang-Wook Kim
Summary: This article introduces an approach for synthesizing AgInZnS/CdS/ZnS core-shell-shell quantum dots (QDs) that show exceptional stability and electroluminescence (EL) performance. By incorporating a cadmium sulfide (CdS) interlayer between an AgInZnS (AIZS) core and a zinc sulfide (ZnS) shell, the diffusion of Zn ions into the AIZS core and the cation exchange at the core-shell interface are prevented. This leads to the formation of a uniform and thick ZnS shell (2.9 nm), significantly enhancing the stability and increasing the photoluminescence quantum yield (87.5%) of the QDs. The potential of AIZS/CdS/ZnS QDs in electroluminescent devices is evaluated, achieving an external quantum efficiency of 9.6% at 645 nm. These findings highlight the importance of uniform and thick ZnS shells in improving the stability and EL performance of QDs.
Article
Materials Science, Multidisciplinary
Qirui Fan, Abhilasha Dehankar, Thomas K. Porter, Jessica O. Winter
Summary: Quantum dots are promising candidates for bioimaging, biosensing, and therapeutic applications due to their optical properties, but the toxicity of conventional QDs containing heavy metals is a challenge. This study compared the toxicity of different types of QDs on cells and found that QDs synthesized without heavy metals or with thick protective layers showed reduced toxicity, making them suitable for bioimaging applications.
Article
Chemistry, Inorganic & Nuclear
Chengzhi Yang, Bao Ke, Qilin Wei, Shuaigang Ge, Bin He, Xianci Zhong, Bingsuo Zou
Summary: Cs-7(Cd1-XMnX)(3)Br-13 crystal is successfully synthesized by hydrothermal method, and the luminescence properties can be significantly modified by partial substitution of Cd2+ with Mn2+. The material has the potential to adjust the luminescence peak position and enhance the photoluminescence quantum yield, making it valuable for studying structure-optical properties and finding applications in optoelectronic devices.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Paul Cavanaugh, Haochen Sun, Ilan Jen-La Plante, Maria J. Bautista, Christian Ippen, Ruiqing Ma, Anne Myers Kelley, David F. Kelley
Summary: In this study, time-correlated single photon counting was used to investigate the radiative dynamics of InP/ZnSe/ZnS core/shell/shell quantum dots with varying amounts of excess indium. The results show that QDs with excess indium exhibit different luminescence kinetics, attributed to the transient population of indium-based hole traps in the ZnSe shell. This indicates a complex interplay between shell thickness, core/shell interfaces, and the distribution of indium-based hole traps within the QDs.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Desong Guo, Shuhong Xu, Chunlei Wang, Zhiliang Wang, Haihong Yin, Honghai Deng, Yuan Jiang, Zhenjuan Zhang, Xiaomei Zhang, Haibao Shao
Summary: A new light-induced method was utilized in this study to dope Mn2+ ions into ZnSe NCs, achieving doped ZnSe NCs with pure Mn dopant emission. The doping process involves the generation of electrons and holes by UV light irradiation, consumption of photogenerated holes by hole scavengers, and diffusion of Mn2+ ions into ZnSe lattice.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Analytical
Luping Tang, Yangyang Zhang, Chen Liao, Yingqing Guo, Yingtao Lu, Yixuan Xia, Yiwei Liu
Summary: In this study, the temperature-dependent photoluminescence (PL) properties of CdS/ZnS core/shell quantum dots (QDs) were investigated. The results showed that the band-edge emission (BEE) intensity decreased with increasing temperature, while the surface-state emission (SSE) intensity first increased and then decreased. The PL spectra exhibited a redshift in peak energies and an increase in full width at half-maximum (FWHM) as the temperature increased. Furthermore, the CIE chromaticity coordinates showed a dramatic change with temperature. These findings suggest that CdS/ZnS core/shell QDs have potential applications as temperature sensors.
Article
Chemistry, Physical
Mona Mittal, Jayanta Dana, Franziska Lubkemann, Hirendra N. Ghosh, Nadja C. Bigall, Sameer Sapra
Summary: Semiconductor nanoheterostructures (NHSs) are important for photocatalytic conversion of solar energy, and their morphologies have a significant impact on charge transfer dynamics and hydrogen production activity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Ying Tang, Chunyang Yin, Qiang Jing, Chunfeng Zhang, Zhi-Gang Yu, Zhenda Lu, Min Xiao, Xiaoyong Wang
Summary: In this study, we found that the motion of excitons in highly luminescent CsPbBr3 nanowires is constrained, resulting in spectra with double peaks and distinct linear polarizations. Additionally, we observed that exciton states can be mixed through the spin-orbit coupling effect.
Article
Chemistry, Physical
Ziran Liu, Zhixing Liu, Rui Wang, Zhi-Guo Zhang, Jide Wang, Chunfeng Zhang
Summary: In this study, the effect of polar environment on excited state dynamics in OPV molecules was investigated. The findings reveal that the excited states in molecules with strong electron push-pulling effects are stabilized and undergo faster intersystem crossing processes in polar solvents. These results suggest that manipulating the polar environment and electron push-pulling effect can improve device performance.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Luping Tang, Yangyang Zhang, Chen Liao, Longbing He, Xing Wu, Tao Xu, Kuibo Yin, Yiwei Liu, Litao Sun
Summary: Electron beam irradiation is a powerful tool for designing material structures and studying nanostructure growth. However, controlling growth of nanoparticles (NPs) is challenging due to their rapid evolution during nanofabrication. In this study, in situ observations revealed layer-by-layer epitaxial regrowth on partially sublimated NPs under electron beam irradiation. This research provides real-time dynamics information for controlling nanostructure growth in gaseous environments.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Yishi Wu, Lina Lu, Buyang Yu, San Zhang, Pengdong Luo, Mingxing Chen, Jingping He, Yongyao Li, Chunfeng Zhang, Jun Zhu, Jiannian Yao, Hongbing Fu
Summary: In this study, an unconventional SF system with excited-state aromaticity was investigated using time-resolved spectroscopy. The authors found that the population transfer occurs by a time-dependent exothermic process driven by coherent coupling between electronic and spin degrees of freedom, leading to the formation of free triplets. These findings provide important insights into the SF mechanism and can guide the development of efficient and stable SF materials for practical applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Qian Li, Rui Wang, Chunfeng Zhang
Summary: Recently, the improvement in the performance of organic solar cells has been achieved by using nonfullerene acceptors (NFAs) with acceptor-donor-acceptor structures. The intermolecular electronic interactions and delocalized excitations contribute significantly to the photocurrent generation. In this Perspective, recent studies on the excited-state dynamics and the role of delocalized excitations in charge generation and recombination processes in NFA-based organic solar cells are discussed. The intramoiety delocalized excitations in NFAs enable efficient photocharge generation in planar heterojunctions with reduced interfacial energy loss. Suggestions for further optimization of NFA-based devices are also provided.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ziran Liu, Qian Li, Lulu Fu, Jide Wang, Jing Ma, Chunfeng Zhang, Rui Wang
Summary: Polymerizing small-molecular acceptors (SMAs) is a promising strategy for constructing high-performance polymer acceptors in all-polymer solar cells (all-PSCs), with the microstructure of molecular packing playing a critical role in regulating the excited-state dynamics during photon-to-current conversion.
Article
Chemistry, Physical
Zhixing Liu, Chunfeng Zhang
Summary: In this study, a model Hamiltonian is used to investigate the nature of low-lying excited states in organic solar cells with non-fullerene acceptors (NFAs). The findings reveal that the intra-moiety excited state in the acceptor domain plays a significant role in charge separation and exhibits characteristics of both local excitation and charge transfer excitation. The spatial extent of this loosely bound state is influenced by intermolecular electronic interactions and electron-vibration interactions, suggesting a potential strategy for optimizing device performance through molecule engineering and morphology control.
ELECTRONIC STRUCTURE
(2023)
Article
Chemistry, Physical
Qian Li, Rui Wang, Tao Yu, Xiaoyong Wang, Zhi-Guo Zhang, Yuan Zhang, Min Xiao, Chunfeng Zhang
Summary: Researchers have identified a new charge separation channel in model copolymer/NFA blends, which allows for long-range charge separation and direct release of free charges. This mechanism, in conjunction with the short-range pathway that involves interfacial charge-transfer excitons, holds potential for optimizing OPVs with diverse device structures.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jinqiu Liu, Chao Zhu, Mike Pols, Zhen Zhang, Fengrui Hu, Lin Wang, Chunfeng Zhang, Zheng Liu, Shuxia Tao, Min Xiao, Xiaoyong Wang
Summary: Understanding the structure-property relationships in semiconductor mixed-halide perovskites is crucial for their potential applications in optoelectronic devices. In this study, RP plane stacking faults were formed during the crystal growth of CsPbBr1.2I1.8 nanocrystals, resulting in the presence of multiple nanodomains with discrete mixed-halide compositions. The photoluminescence peaks from these nanodomains can be resolved simultaneously at cryogenic temperature, indicating the interactions of coupled quantum dots within a single nanocrystal.
Article
Chemistry, Multidisciplinary
Si Li, Fengrui Hu, Yanfeng Bi, Hongyu Yang, Bihu Lv, Chunfeng Zhang, Jiayu Zhang, Min Xiao, Xiaoyong Wang
Summary: In this study, the carrier transport behavior of solid films of giant CdSe/CdS NCs was investigated using transient absorption microscopy. It was found that at high pump fluences, the carrier transport distance could reach up to 2 μm within 30 ps after laser pulse excitation. These findings not only provide transport information in the regime of high laser pump fluences, but also shed light on the rational design of high-power light detecting schemes based on colloidal NCs.
Article
Chemistry, Multidisciplinary
Chen Liao, Luping Tang, Yunzhe Jia, Shaoling Sun, Haoran Yang, Jie Xu, Zixuan Gu
Summary: In this study, the AR dynamics of near-infrared Ag2Se QDs were investigated through transient absorption experiments. The results showed that Ag2Se QDs have longer biexciton and triexciton lifetimes, with slow Auger rates primarily attributed to the low density of final states. These findings suggest that Ag2Se QDs could be excellent candidates for low-threshold lasers and third-generation photovoltaics.
Article
Chemistry, Physical
Qian Li, Rui Wang, Chunfeng Zhang
Summary: Recently, the development of nonfullerene acceptors (NFAs) with acceptor-donor-acceptor structures has greatly improved the performance of organic solar cells. The intermolecular electronic interactions between the donating and accepting units lead to intramoiety and interfacial delocalized excitations, which significantly contribute to photocurrent generation. This Perspective discusses the excited-state dynamics responsible for the working mechanism in NFA-based organic solar cells, emphasizing the role of delocalized excitations in charge generation and recombination processes. The intramoiety delocalized excitations in NFAs enable efficient charge separation without the formation of interfacial charge-transfer excitons, reducing interfacial energy loss in planar heterojunctions. Several research directions are suggested to further optimize NFA-based devices by elucidating the performance-limited processes.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Lei Ye, Yujie Zhao, Rong Xu, Shuangshuang Li, Chunfeng Zhang, Hanying Li, Haiming Zhu
Summary: This study investigates the sensitization of inorganic semiconductors using singlet fission (SF) materials in high-quality organic/2D bilayer heterostructures. The research reveals the intricate interplay between singlet and triplet excitons at the organic/inorganic interface, and demonstrates that competitive processes can lead to efficient photocharge generation in heterostructures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Ziran Liu, Zhixing Liu, Rui Wang, Zhi-Guo Zhang, Jide Wang, Chunfeng Zhang
Summary: This study investigates the effect of polar environment on the excited-state dynamics of acceptor-donor-acceptor type OPV molecules, and reveals that symmetry breaking in polar solvents can stabilize excited states and accelerate intersystem crossing processes, reducing the energy gaps.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Chen Liao, Luping Tang, Yan Li, Shaoling Sun, Liye Wang, Jie Xu, Yunzhe Jia, Zixuan Gu
Summary: Temperature-insensitive near-infrared optical gain is achieved using low-toxicity Ag2Se quantum dots, allowing efficient amplified spontaneous emission even at high temperatures.
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
