Article
Chemistry, Physical
E. Krishnan Vishnu, Anoop Ajaya Kumar Nair, K. George Thomas
Summary: The study investigates the photoluminescence fluctuations in CdSe QDs by varying core size and maintaining constant shell thickness. Increase in core size leads to enhanced detrapping rate and higher photoluminescence efficiency.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
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
Chemistry, Physical
Swati Khurana, Md Samim Hassan, Priyesh Yadav, Dibyajyoti Ghosh, Sameer Sapra
Summary: By utilizing bifunctional ligands, researchers synthesized MDNHs of CsPbBr3 nanocrystals and CdSe/CdS/ZnS core/shell/shell nanoplatelets, where 4-ATP exhibited faster charge transfer rate and the highest number of CSS NPLs around CsPbBr3 NCs in the MDNHs.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
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
Chemistry, Multidisciplinary
Ilya A. Gorbachev, Andrey Smirnov, Evgeny G. Glukhovskoy, Vladimir V. Kolesov, George R. Ivanov, Iren E. Kuznetsova
Summary: The formation process of a Langmuir-Schaefer matrix based on a mixed monolayer of arachidic acid (AA) and 8 nm CdSe/CdS/ZnS quantum dots (QDs) stabilized by trioctylphosphine oxide (TOPO) was investigated. The change in morphology of Langmuir-Blodgett monolayers begins at a QDs and AA molecules ratio of 1:24, leading to the appearance of dendrimeric structures with a thickness of 30-40 nm during LB film deposition process. The information on dependence of morphology of these structures on the molar ratio is crucial for producing ordered 2D nanostructures containing OD and 1D objects with quantum bonds and can be applied in nanoelectronic and optoelectronic devices.
Article
Chemistry, Multidisciplinary
Weishuo Xing, Shuang Zhang, Ruoting An, Wengang Bi, Chong Geng, Shu Xu
Summary: A low-temperature route using mixed amine ligands was developed for the synthesis of tetrapod CdSe/CdS QDs, simplifying the anisotropic growth of CdS on CdSe QDs. The amine ligands induce the orientation growth of cubic CdS arms on wurtzite CdSe QDs through a pyramid-shaped intermediate structure, allowing for growth control through a microfluidic reactor. This study paves the way for green and economic production of tetrapod CdSe/CdS QDs towards efficient light-emitting applications.
Article
Chemistry, Multidisciplinary
Sergii Morozov, Stefano Vezzoli, Alina Myslovska, Alessio Di Giacomo, N. Asger Mortensen, Iwan Moreels, Riccardo Sapienza
Summary: Giant shell CdSe/CdS quantum dots exhibit high brightness and flexibility, with near-unity quantum yield and suppressed blinking. However, their single photon purity is reduced due to efficient multiexcitonic emission. In this study, we observed a significant blueshift in the photoluminescence biexciton spectrum of pure-phase wurtzite quantum dots. By using spectral filtering, we achieved a 2.3 times reduction in biexciton quantum yield while preserving 60% of the exciton single photon emission, leading to an improvement in purity from g2(0)=0.07±0.01 to g2(0)=0.03±0.01. Furthermore, at higher pump fluence, the spectral purification was even more effective, resulting in up to a 6.6 times reduction in g2(0) by suppressing higher order excitons and shell states with larger blueshifts.
Article
Chemistry, Physical
Aliaksandra Radchanka, Varvara Hrybouskaya, Andrey Iodchik, Alexander W. Achtstein, Mikhail Artemyev
Summary: In this study, the researchers found that by varying the surface charged groups on CdSe/ZnS QDs, the zeta-potential can be tuned to control the quantum yield of emission and the recombination dynamics. The presence of zwitterionic surface groups allows for pH tuning of the zeta-potential and quantum yield.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
O. Kuzyk, O. Dan'kiv, R. Peleshchak, I. Stolyarchuk
Summary: A model of spherical quantum dot of the core/multilayer shell type, taking into account the mismatch between lattice parameters and pressure due to surface curvature, was constructed. The influence of external pressure on the band structure of a CdSe-core/ZnS/CdS/ZnS-shell quantum dot was investigated using the deformation potential method. It was found that the optical band gap width of the quantum dot can be changed in a wide range by adjusting the thickness of the shell layers and the amount of pressure. Additionally, a critical value of comprehensive pressure was observed for small CdSe QD cores, above which the value of baric coefficient decreases abruptly. The thickness of the CdS layer in the shell also affected the critical pressure.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Chemistry, Applied
Mei Hu, Xiaofei Hu, Guoqiang Wang, Yongxia Cheng, Xiaoling Yu, Xianqing Huang, Yu Li
Summary: A portable fluorescence immunosensor based on CdSe/CdS/ZnS quantum dots (QDs) was developed for the precise quantification of olaquindox (OLA). The QDs labeled anti-OLA antibody served as a bioprobe and greatly enhanced the sensitivity of the lateral flow test strip. The method achieved quantitative results within 8 minutes using a fluorescent strip scan reader, with a detection limit of 0.12 μg/kg, 2.7 times more sensitive than the conventional colloidal gold-based strips. Acceptable recovery rates of 85.0%-95.5% were obtained for spiked samples. This QDs-based strip immunoassay method is suitable for on-site detection and rapid initial screening of OLA in swine feedstuff, and has the potential for detecting other veterinary drugs to ensure food safety.
Article
Engineering, Electrical & Electronic
Song Wei, Xiang Luo, Juhong Miao, Lei Zhang
Summary: This study develops a simple method to prepare high-quality alloyed quantum dots and successfully fabricates high-performance light-emitting diodes. The research results are of great significance for improving the performance of light-emitting diodes.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Nanoscience & Nanotechnology
A. Allemand, F. Kulzer, B. Mahler, C. Dujardin, J. Houel
Summary: CdS(1.3 nm)/CdSe(1.7 nm)/CdS(3.4 nm) spherical quantum wells (SQWs) with a diameter of 13 nm were synthesized, and photon antibunching from their emission was observed for the first time, confirming them as single-photon sources. The study showed that antibunching persists even at high excitation intensities and is associated with blue-shifted emission.
Article
Chemistry, Multidisciplinary
Dongdong Chen, Hairui Lei, Chenqi Zhu, Xing Chen, He Tian, Wei Fang, Haiyan Qin, Xiaogang Peng
Summary: In this study, pre-synthesized CdSe/CdS core/shell quantum dots were fused together in solution to form CdS nanoplatelets with multiple embedded CdSe quantum dots. The resulting structure exhibited homogeneous-free optical properties and demonstrated unique and complex excitonic characteristics.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Celine Rivaux, Tugce Akdas, Ranjana Yadav, Omar El-Dahshan, Davina Moodelly, Wai Li Ling, Dmitry Aldakov, Peter Reiss
Summary: Continuous flow synthesis of highly luminescent AIS/ZnS QDs was achieved with high PLQY values in short reaction times, by optimizing reaction parameters and favoring the formation of defect complexes through the addition of excess indium and low reaction temperatures. Structural disorder and the formation of ZnIn- antisite defects during ZnS shell growth contribute to the high efficiency of the QDs. The presented method allows for excellent reproducibility and scalability for large-scale production.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Andrew A. Marder, James Cassidy, Dulanjan Harankahage, Jacob Beavon, Luis Gutierrez-Arzaluz, Omar F. Mohammed, Aditya Mishra, Austen C. Adams, Jason. D. Slinker, Zhongjian Hu, Stephen Savoy, Mikhail Zamkov, Anton V. Malko
Summary: Compared to zero-dimensional (0D) semiconductor quantum dots, 2D semiconductor nanoplatelets (NPLs) offer a spectrally narrow luminescence and superior absorption coefficients. However, optical devices based on NPLs still suffer from nonradiative Auger decay, which limits the efficiency of various processes. In this study, it is demonstrated that Auger recombination is strongly suppressed in spherically shaped nanoplatelets called quantum shells (QSs), leading to improved performance in terms of biexciton emission yield, amplified spontaneous emission, and electroluminescence enhancement. These results are significant for the development of solution-processed colloidal lasers and LEDs.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Medicinal
Joseph P. Neilly, Leilei Yin, Sarah-Ellen Leonard, Paul J. A. Kenis, Gerald D. Danzer, Ashtamurthy S. Pawate
JOURNAL OF PHARMACEUTICAL SCIENCES
(2020)
Article
Multidisciplinary Sciences
Whitney E. Sinclair, Huei-Huei Chang, Arkaprava Dan, Paul J. A. Kenis, Catherine J. Murphy, Deborah E. Leckband
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Physical
Mohamed S. E. Houache, Reza Safari, Uzoma O. Nwabara, Thibault Rafaideen, Gianluigi A. Botton, Paul J. A. Kenis, Steve Baranton, Christophe Coutanceau, Elena A. Baranova
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Danielle A. Henckel, Michael J. Counihan, Hannah E. Holmes, Xinyi Chen, Uzoma O. Nwabara, Sumit Verma, Joaquin Rodriguez-Lopez, Paul J. A. Kenis, Andrew A. Gewirth
Summary: The study found that the local pH of a gas diffusion electrode undergoing CO2 reduction is significantly lower than the bulk electrolyte pH, showing dependence on applied potential. The decrease in pH is attributed to the formation of malachite from soluble Cu(II) species on the initially oxidized electrode surface.
Article
Chemistry, Physical
Xinyi Chen, Junfeng Chen, Nawal M. Alghoraibi, Danielle A. Henckel, Ruixian Zhang, Uzoma O. Nwabara, Kenneth E. Madsen, Paul J. A. Kenis, Steven C. Zimmerman, Andrew A. Gewirth
Summary: A Cu-polyamine hybrid catalyst was developed to significantly enhance the selectivity for ethylene production in CO2 electrochemical conversion. Incorporating polyamine altered surface reactivity, leading to improved product selectivity at high current densities.
Article
Nanoscience & Nanotechnology
Emiliana R. Cofell, Uzoma O. Nwabara, Saket S. Bhargava, Danielle E. Henckel, Paul J. A. Kenis
Summary: This study investigates the degradation of gas diffusion electrodes (GDEs) in a flowing, alkaline CO2 electrolyzer via the formation of carbonate deposits on the GDE surface. The rate of carbonate deposit formation was found to increase with increasing electrolyte molarity and become more prevalent in K+-containing electrolytes. The formation of carbonate deposits was found to diminish electrode performance in ECO2R and reduce GDE hydrophobicity, leading to increased flooding and internal deposits within the GDE substrate.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Andrew N. Kuhn, Haidong Zhao, Uzoma O. Nwabara, Xiaofei Lu, Mingyan Liu, Yung-Tin Pan, Wenjin Zhu, Paul J. A. Kenis, Hong Yang
Summary: Copper catalysts are widely studied for the electroreduction of CO2 to hydrocarbon products, with this study presenting the synthesis and catalytic study of silver-coated copper nanoparticles. The optimized Cu@Ag electrocatalyst showed a low onset potential for ethylene formation and a high FE towards C2+ products, demonstrating potential for efficient CO2 electroreduction.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Uzoma O. Nwabara, Anthony D. Hernandez, Danielle A. Henckel, Xinyi Chen, Emiliana R. Cofell, Michiel P. De-Heer, Sumit Verma, Andrew A. Gewirth, Paul J. A. Kenis
Summary: While flow electrolyzers have achieved high selectivity and activity in the reduction of CO2 to value-added chemicals, their durability remains a challenge. This paper explores alternatives to Nafion as a binder in the catalyst layer, such as PTFE and Sustainion, as well as different methods of catalyst layer preparation. The use of mixed binders and coating cathodes with a Sustainion ionomer over layer show potential in extending the lifetimes of cathodes in CO2 electrolysis systems.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Huei-Ru ''molly'' Jhong, Uzoma O. Nwabara, Sofia Shubert-Zuleta, Nicholas S. Grundish, Bharat Tandon, Lauren C. Reimnitz, Corey M. Staller, Gary K. Ong, Camila A. Saez Cabezas, John B. Goodenough, Paul J. A. Kenis, Delia J. Milliron
Summary: Electroreduction of CO2 to formate using Sn-doped ITO nanocrystal catalysts in an alkaline flow electrolyzer shows high selectivity, low onset potential, and high partial current density for HCOO- production. This research holds significance in the field of carbon fuel production.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Saket S. Bhargava, Daniel Azmoodeh, Xinyi Chen, Emiliana R. Cofell, Anne Marie Esposito, Sumit Verma, Andrew A. Gewirth, Paul J. A. Kenis
Summary: This study reduces the energy consumption of CO2 electrolysis by using a NiFe-based bimetallic catalyst and applying a magnetic field. Power savings ranging from 7% to 6496% are achieved in a gas diffusion electrode-based flow electrolyzer, with a maximum CO partial current density of -565 mA/cm(2) reached.
ACS ENERGY LETTERS
(2021)
Article
Electrochemistry
Saket S. Bhargava, Emiliana R. Cofell, Prithviraj Chumble, Daniel Azmoodeh, Sujay Someshwar, Paul J. A. Kenis
Summary: Research shows that the presence of multivalent cations can affect the electrochemical performance of CO2RR, possibly due to the deposition of metal oxides and/or metal hydrides on the electrode surface, blocking catalytically active sites.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Emiliana R. Cofell, Zachary Park, Uzoma O. Nwabara, Lauren C. Harris, Saket S. Bhargava, Andrew A. Gewirth, Paul J. A. Kenis
Summary: The electrochemical reduction of CO2 (CO2RR) has the potential to reduce environmentally damaging CO2 emissions, produce carbon-neutral fuels and chemicals, and store excess renewable energy. This study investigates the durability of silver-coated gas diffusion electrode cathodes under potential cycling conditions, revealing the impact of cycling on cathode performance through carbonate formation and catalyst layer restructuring and loss.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Whitney E. Sinclair, Ashtamurthy S. Pawate, Ty'Nya A. Larry, Jeremy M. Schieferstein, Joseph J. Whittenberg, Deborah E. Leckband, Paul J. A. Kenis
Summary: Here, the development of an accessible organ-on-a-chip platform is described. This platform allows for ex vivo studies on vascular endothelial cells under physio-mechanical stress, by applying hydrodynamic and mechanical forces. The platform design and fabrication approach aim to improve accessibility of microfluidic technology, reducing the technical expertise and equipment required. The platform enables cell imaging on-chip and exposure to aerosolized particulates, validating its capacity for in situ cell imaging.
MICROFLUIDICS AND NANOFLUIDICS
(2023)
Article
Electrochemistry
Elizabeth J. Biddinger, Paul J. A. Kenis
Summary: R&D on electrochemical approaches for chemical manufacturing is thriving due to the societal goal of reducing greenhouse gas emissions and achieving carbon neutrality by 2050. Established processes like the chlor-alkali process and adiponitrile production have been scaled up and water electrolysis for hydrogen production is being deployed. This report highlights efforts to electrify chemical conversions using renewable feeds and discusses challenges in implementing electrochemical manufacturing approaches.
ELECTROCHEMICAL SOCIETY INTERFACE
(2023)
Article
Chemistry, Multidisciplinary
Ajit Vikram, Ken Brudnak, Arwa Zahid, Moonsub Shim, Paul J. A. Kenis
Summary: Colloidal semiconductor nanocrystals with tunable optical and electronic properties offer exciting opportunities for various applications, but identifying optimal synthesis conditions and screening of recipes remain major challenges. An autonomous experimentation platform incorporating machine-learning and automated reactor can accelerate synthesis screening and optimization.
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.