Article
Nanoscience & Nanotechnology
Zhuo Chen, Jinrong Wang, Nengjie Cao, Yao Wang, Hao Li, Nicolaas Frans de Rooij, Ahmad Umar, Yancong Feng, Paddy J. French, Guofu Zhou
Summary: The study presents a facile technique combining supramolecular assembly and lyophilization to functionalize graphene and transform 2D nanosheets into 3D foams for gas sensing applications. The gas sensors exhibit ultrahigh response, excellent selectivity, and reliable repeatability towards NO2, showing promising potential for high-performance gas sensors and chemical trace detectors.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Jie Li, Pengrong Zheng, Linxi Dong, Weihuang Yang, Chaoran Liu, Yuekun Yang, Zhongying Xue, Guanyu Liu, Panlin Li, Zengfeng Di
Summary: The approach proposed in the article allows for direct growth of graphene on any dielectric substrates through the catalytic action of germanium, resulting in highly conductive and patterned graphene. The graphene sensor exhibits excellent gas sensing properties due to the large charge transferred from graphene to NO2 molecules.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Ik Jun Choi, Bum Jun Kim, Sang Hoon Lee, Byung Joo Jeong, Tuqeer Nasir, Yun Seong Cho, Noeul Kim, Jae-Hyun Lee, Hak Ki Yu, Jae-Young Choi
Summary: The reactivity of tellurium to NO2 gas can be controlled by adjusting the number of Te nanotube walls and lengths, and the gas detection performance is maintained even with increasing humidity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Rafael Ferreira de Menezes, Fernando Pirani, Cecilia Coletti, Luiz Guilherme Machado de Macedo, Ricardo Gargano
Summary: Graphene Quantum Dots (GQDs) show promise as sensitive and accurate gas sensors for monitoring pollutant gases. Doping GQDs with boron, nitrogen or aluminum greatly improves their adsorption capabilities, particularly for NO2 gas sensors.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Daniel Matatagui, Jesus Lopez-Sanchez, Alvaro Pena, Aida Serrano, Adolfo del Campo, Oscar Rodriguez de la Fuente, Noemi Carmona, Elena Navarro, Pilar Marin, Maria del Carmen Horrillo
Summary: Few-layered mesoporous graphene is utilized as a sensing material to develop a high-sensitivity room temperature NO2 sensor, with an optimized manufacturing process involving high-energy milling. The sensor shows improved performance with UV photo-activation and minimal dependency on humidity, making it promising for practical applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Zixuan Wu, Limin Rong, Jinglan Yang, Yaoming Wei, Kai Tao, Yubin Zhou, Bo-Ru Yang, Xi Xie, Jin Wu
Summary: Stretchable, self-healable, and transparent gas sensors based on salt-infiltrated hydrogels with high sensitivity to NO2 and fast response and recovery time are reported in this study. The addition of calcium chloride (CaCl2) to the hydrogel greatly enhances the gas sensing performance, resulting in increased sensitivity and lower detection limits compared to traditional materials. The research demonstrates the great potential of salt-infiltrated hydrogels for wearable electronics equipped with gas sensing capabilities in both anaerobic and aerobic environments.
Article
Chemistry, Physical
Shengliang Zheng, Yue Li, Juanyuan Hao, Haitao Fang, Ye Yuan, Hsu-Sheng Tsai, Quan Sun, Peng Wan, Xu Zhang, You Wang
Summary: The hierarchical assembly of SnO2-rGO/SnS2 heterostructure with n-g-n junctions shows improvements in charge transport efficiency for ultra-sensitive NO2 gas detection. Compared to conventional sensors, the ternary design exhibits significantly higher sensing response, lower detection limit, and excellent performance in terms of response time, stability, selectivity, and humidity resistance.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Wonsik Eom, Ji-Soo Jang, Sang Hoon Lee, Eunsong Lee, Woojae Jeong, Il-Doo Kim, Seon-Jin Choi, Tae Hee Han
Summary: This study introduces non-noble metals as sensitizers in hybrid metal oxide/graphene fibers for high-performance chemiresistive sensors, showing significantly improved response to NO2 gas and effective recovery characteristics. The innovative strategy of using non-noble metal and metal oxide nanoparticles to decorate flexible graphene fiber opens up new possibilities for high-performance devices such as photovoltaic devices, photocatalysts, and chemical catalysts.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Engineering, Electrical & Electronic
Partha Bhattacharyya
Summary: This review discusses the strategies for enhancing the performance of graphene/rGO-FET gas sensor devices, including fabrication optimization and operational technique improvements, with a comparison of the advantages and limitations of different approaches.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Keerti Rathi, Naveen Kumar Arkoti, Kaushik Pal
Summary: This study demonstrates the high sensitivity of 2D metal carbide MXenes for gas sensing, with strong metal conductivity and abundant functional groups. The presence of cationic surfactant CTAB stabilizes Nb2CTx and enhances its detection capability for NO2 gas.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Analytical
Dumitru Tsiulyanu
Summary: A fast-operating NO2 sensor based on an amorphous Te layer has been developed, showing a sensitivity of around 60% / ppm and a response time of approximately 5 seconds at room temperature. The sensor exhibited long-term stability with no appreciable changes in characteristics after 12 weeks of testing. The sensor's structure and active material allow for the simultaneous involvement of contact and surface phenomena in gas detection, resulting in modulation of charge carriers on the Te film surface.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Kyeorei Lim, Young-Moo Jo, Ji-Wook Yoon, Jun-Sik Kim, Dong-Jae Lee, Young Kook Moon, Ji Won Yoon, Jae-Hyeok Kim, Hun Ji Choi, Jong-Heun Lee
Summary: Transparent nanopatterned chemiresistors composed of aligned 1D Au-SnO2 nanofibers demonstrated highly selective detection of toxic NO2 gas at room temperature under visible light illumination. The sensors, with extremely low coverage of sensing materials and high transparency, can detect NO2 at sub-ppm levels with a detection limit as low as 6 ppb. The design, utilizing localized surface plasmonic resonance effect of Au nanoparticles, allows for room-temperature NO2 sensing without the need for external heaters or light sources, opening up new possibilities for transparent oxide-based gas sensors.
Article
Nanoscience & Nanotechnology
Hongying Lin, Junhe Wang, Shiqiang Xu, Qiang Zhang, Yongqiang Cheng, Dan Han, Hongtao Wang, Kai Zhuo
Summary: By functionalizing Au into WO3 nanofibers, the effect of different Au layer thicknesses on the sensor performance was studied. It was found that the 10 nm Au-WO3 composite nanomaterial sensor exhibited the most significant improvement, with optimal operating temperature at 175℃, excellent selectivity, and high sensitivity.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yaoming Wei, Hao Wang, Qiongling Ding, Zixuan Wu, He Zhang, Kai Tao, Xi Xie, Jin Wu
Summary: This study fabricates highly stretchable, sensitive, and room-temperature nitrogen dioxide (NO2) sensors using intrinsically stretchable, transparent, and ion-conducting hydrogels and active metals as transducing materials and electrodes, respectively. The sensitivity of the NO2 sensor is significantly improved by replacing the anodic silver with a copper-tin alloy. The introduction of glycerol improves the stability of the sensors.
MATERIALS HORIZONS
(2022)
Review
Environmental Sciences
G. J. Thangamani, Kalim Deshmukh, Tomas Kovarik, N. A. Nambiraj, Deepalekshmi Ponnamma, Kishor Kumar Sadasivuni, H. P. S. Abdul Khalil, S. K. Khadheer Pasha
Summary: This review provides a state-of-the-art overview of chemiresistive gas sensors, focusing on the recent advancements and advantages of graphene oxide (GO) nanocomposites-based chemiresistive gas sensors.
Article
Chemistry, Physical
Surabhi Mishra, Pravin Kumar Singh, Rajesh K. Yadav, Ahmad Umar, Pooja Lohia, D. K. Dwivedi
Summary: This paper investigates the linear and nonlinear properties of Sb-doped Ge-Se-Te glasses for optoelectronic applications, including refractive index, optical conductivity, dielectric constants, and energy losses. Various models and formulas were used to analyze the experimental data and provide a comprehensive understanding of the samples.
Article
Chemistry, Analytical
Ahmad Umar, M. Shaheer Akhtar, Sadia Ameen, M. Imran, Rajesh Kumar, Yao Wang, Ahmed A. Ibrahim, H. Albargi, Mohammed Jalalah, Mabkhoot A. Alsaiari, M. S. Al-Assiri
Summary: This work describes the preparation of spinel NiMn2O4 nanodisks decorated reduced graphene oxide (rGO) via low-temperature colloidal solution method and analyzes their performances as electro-active electrode for electrochemical sensor and supercapacitors. The results showed high sensitivity and specific capacitance of the NiMn2O4/rGO composite, making it a promising electrode material for high-performance sensing and supercapacitors.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Jincheng Fan, Hao Li, Huiyun Hu, Yue Niu, Ruiting Hao, Ahmad Umar, M. S. Al-Assiri, Mabkhoot A. Alsaiari, Yao Wang
Summary: In this study, a room temperature formaldehyde sensor was developed using ZnO nanoparticles and graphene material, capable of detecting as low as 5 ppm of HCHO. The excellent gas sensing performances, including high selectivity and reversibility, were attributed to the synergistic effects of 5-aminonaphthalene-1-sulfonic acid (ANS) and ZnO nanoparticles, with ANS facilitating charge transfer for lower energy barrier detection.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Ceramics
Ahmad Umar, Ahmed A. Ibrahim, H. Y. Ammar, Umesh T. Nakate, Hasan B. Albargi, Y. B. Hahn
Summary: The synthesis, characterizations and gas sensor application of nano-textured urchin like CuO hollow microspheres were reported. The fabricated CuO sensor device showed elevated response towards ethanol with high selectivity after optimization of operating temperature and concentration. The developed gas sensor devices demonstrated outstanding selectivity towards ethanol gas and the ethanol sensing mechanism was elucidated using density functional theory computational quantum modeling.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Ahmad Umar, Ahmed A. Ibrahim, Umesh T. Nakate, Hasan Albargi, Mabkhoot A. Alsaiari, Faheem Ahmed, Fahad A. Alharthi, Abdulaziz Ali Alghamdi, Nabil Al-Zaqri
Summary: The ethanol sensing properties of nanocrystalline copper oxide (CuO) nanoplates were studied and a sensor based on CuO nanoplates showed a high ethanol response at 250 degrees C. The sensor exhibited high selectivity in the presence of various gases such as NO2, CO2, CH4, and H-2. The CuO nanoplates based gas sensor was also tested for transient ethanol response and stability.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Junchao Liu, Yao Wang, Jingxia Wang, Guofu Zhou, Tomiki Ikeda, Lei Jiang
Summary: Rewritable paper is an environmentally friendly approach to information transmission with potential, but there are limitations such as slow response sensitivity and poor storage stability. By constructing optically rewritable azobenzene inverse opals, some of these limitations have been addressed, providing a possible pathway for the development of novel display technologies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Bing Liu, Tao Yang, Xin Mu, Zhijian Mai, Hao Li, Yao Wang, Guofu Zhou
Summary: In a liquid crystal state, specific orientations and alignments of LC molecules produce outstanding anisotropy, with organic LC molecules and inorganic nanomaterials both capable of forming supramolecular LC phases. Hydrogen bonds are considered the best option for supramolecular LCs. This review summarizes the newest advances in self-assembled structure, stimulus-responsive capability and application of supramolecular hydrogen-bonded LC nanosystems, providing immense potential for advancing LC technology.
Article
Chemistry, Multidisciplinary
Xiuyi Shi, Zixuan Deng, Pei Zhang, Yao Wang, Guofu Zhou, Laurens T. Haan
Summary: A new strategy has been developed to create a dual-responsive elastic cholesteric polymer material, which can easily undergo color reflection changes and pattern preparation with high contrast. Due to its elastic nature, it can be used as a wearable device and as a multifunctional smart sensor for sweat and movement detection.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yuanyuan Guo, Quan Wang, Hao Li, Yixun Gao, Xuezhu Xu, Biao Tang, Yao Wang, Bai Yang, Yi-Kuen Lee, Paddy J. French, Guofu Zhou
Summary: In this work, a technology for in situ fluorescent patterning using laser direct writing on cellulose film was developed. The technology allows for adjustable fluorescent intensity and surface microstructure of patterns, simplifies the manufacturing process, and reduces costs. The fabricated fluorescent patterns exhibit excellent anti-counterfeiting performance, optical properties, and acid/base resistance.
Article
Chemistry, Multidisciplinary
Yixun Gao, Jianqiang Wang, Yancong Feng, Nengjie Cao, Hao Li, Nicolaas Frans de Rooij, Ahmad Umar, Paddy J. French, Yao Wang, Guofu Zhou
Summary: Developing efficient room-temperature sensing materials and sensors for nitric oxide (NO) gas, a biomarker used in monitoring inflammatory respiratory diseases, is a challenging task. The introduction of Hemin into nitrogen-doped reduced graphene oxide (N-rGO) to obtain HNG-ethanol results in a novel sensing material with superior gas sensing properties towards NO gas. The HNG-ethanol sensor demonstrates high selectivity, humidity resistance, stability, and a deep understanding of gas sensing mechanisms, providing guidance for future research on graphene-iron derivatives in sensing materials.
Article
Chemistry, Physical
Yadong Wu, Teng Zhou, Yao Wang, Yongchao Qian, Weipeng Chen, Congcong Zhu, Bo Niu, Xiang-Yu Kong, Yifei Zhao, Xiangbin Lin, Lei Jiang, Liping Wen
Summary: This study introduces the synergistic effect of surface and space charges in nanoconfined systems to address the challenge of simultaneously achieving high ion-selectivity and high ion-flux in conventional nanofluidic systems. Theoretical simulation results systematically analyze the key mechanisms for achieving high ion-selectivity, ion-flux, and nanofluidic energy conversion performance under different conditions.
Article
Nanoscience & Nanotechnology
Zhuo Chen, Jinrong Wang, Nengjie Cao, Yao Wang, Hao Li, Nicolaas Frans de Rooij, Ahmad Umar, Yancong Feng, Paddy J. French, Guofu Zhou
Summary: The study presents a facile technique combining supramolecular assembly and lyophilization to functionalize graphene and transform 2D nanosheets into 3D foams for gas sensing applications. The gas sensors exhibit ultrahigh response, excellent selectivity, and reliable repeatability towards NO2, showing promising potential for high-performance gas sensors and chemical trace detectors.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Huiyun Hu, Hongping Liang, Jincheng Fan, Lanpeng Guo, Hao Li, Nicolaas Frans de Rooij, Ahmad Umar, Hamed Algarni, Yao Wang, Guofu Zhou
Summary: In this study, a ZnO/ANS-rGO composite was prepared for room-temperature formaldehyde sensing using a biomimetic hierarchical structure and supramolecular assembly. The sensor exhibited high response, good repeatability, and long-term stability, making it a promising material for practical formaldehyde sensing.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yuanyuan Guo, Yefeng Feng, Hao Li, Yao Wang, Zhen Wen, Guofu Zhou
Summary: The study presents a carbon quantum dots@hard carbon (CQDHC) composite electrode material for potassium ion batteries (PIBs) fabricated through a one-step low-temperature pyrolysis process. The CQDHC electrode exhibits excellent charge-discharge performance, stability, and columbic efficiency, offering better rate performance than most hard carbon materials. The presence of carbon quantum dots enhances the adsorption capacity and disorder of the CQDHC electrode. This study provides a novel approach using carbon quantum dots to enhance the performance of carbon electrodes in potassium ion batteries.
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.
