Article
Chemistry, Multidisciplinary
Karol P. Golian, Aviya S. Akari, Gregory K. Hodgson, Stefania Impellizzeri
Summary: A dual fluorogenic system based on BODIPY dye and TEMPO nitroxide was synthesized, which can be activated by UVA light to imprint a fluorescent pattern on a surface. The performance of this molecular strategy can be improved by metal-enhanced fluorescence effects using silver nanostructures.
Article
Chemistry, Multidisciplinary
Sabrina Elkhanoufi, Rachele Stefania, Diego Alberti, Simona Baroni, Silvio Aime, Simonetta Geninatti Crich
Summary: The assessment of enzyme activity is crucial for early diagnoses in various diseases. This study proposes the use of electron paramagnetic resonance (EPR) as an easy method to quantify carboxylesterase (CE) activity. By synthesizing two amphiphilic compounds with ester groups and observing the EPR signals produced by their hydrolysis, enzyme activity can be measured quantitatively. The results show that this method has high selectivity towards CE2 and comparable detection limits to optical methods.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Analytical
Feng Chen, Guodong Li, Chun Wu, Ling Wang, Chung-Nga Ko, Dik-Lung Ma, Chung-Hang Leung
Summary: In this study, a novel method was developed for the ultrasensitive and highly specific detection of miRNA-21. This method exhibited advantages such as lower and constant temperature operation, high specificity, and comparable detection limit with conventional RT-qPCR. The method utilized long-lived probes and rolling circle amplification, and could discriminate between matched and mismatched targets. The application of this method in cancer cells and mouse serum samples showed good agreement with RT-qPCR results.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Huiyang Dong, Shuqi Ma, Qing Zhong, Mei Zhu
Summary: Four mononuclear lanthanide complexes based on a nitronly nitroxide radical have been synthesized and characterized. The structures reveal that each Ln(III) ion is eight-coordinated and coordinated water molecules form tetra-nuclear complexes and/or dimers through hydrogen bonds. The Gd complex shows ferromagnetic interaction with the nitroxide radical and Tb complex can detect Fe(3+) ions with high sensitivity and selectivity through fluorescence quenching effect.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Engineering, Electrical & Electronic
Xia Li, Yu Li, Chenxiao Wang, Wa Jin, Guangwei Fu, Xinghu Fu, Weihong Bi
Summary: In this study, we conducted an experimental investigation on a highly sensitive, low-concentration chloride ion fiber-optic probe using a Fabry-Perot interferometer. By wet depositing a sensitive Ag/alginate nanocomposite film on the surface of the probe, the sensitivity of the probe was measured as 24.67 nm/% by observing the peak wavelength drift.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Applied
Chenzhao Wang, Xiujuan Wang, Yupu Zhang, Yihuan Tang, Yi Yang, Bin Wang, Shanshan Wei, Zhibing Wang, Guoying Sun
Summary: A rapid, accurate, and selective detection scheme for Vitamin P in fruit samples using ionic liquid-based carbon dots was proposed. The synthesized IL-CDs showed excellent optical properties and demonstrated good sensitivity and selectivity towards VP.
Article
Chemistry, Analytical
Qian Liu, Jie Yuan, Renfeng Jiang, Longwei He, Xuefeng Yang, Lin Yuan, Dan Cheng
Summary: Gamma-Glutamyltransferase (GGT) is an important clinical biomarker associated with many diseases. A probe called NIR-GGT has been developed for imaging GGT activity. This probe can sensitively detect GGT and generate a strong fluorescent and photoacoustic signal. It can track changes in GGT level during early drug-induced acute liver injury (DIALI) and tumor resection with high temporal-spatial resolution.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Nannan Zhu, Junhong Xu, Qiujuan Ma, Yang Geng, Linke Li, Shuzhen Liu, Shuangyu Liu, Gege Wang
Summary: The determination of mercuric ions (Hg2+) in environmental and biological samples has attracted researchers' attention lately. In this study, a novel turn-on Hg2+ fluorescent probe utilizing a rhodamine derivative has been constructed, which can sensitively and selectively sense Hg2+. The probe shows reversible dual colorimetric and fluorescence sensing of Hg2+ through forming a 1:1 coordination complex with Hg2+.
Article
Chemistry, Analytical
Tamara Guerrero-Esteban, Cristina Gutierrez-Sanchez, Tania Garcia-Mendiola, Monica Revenga-Parra, Felix Pariente, Encarnacion Lorenzo
Summary: A disposable electrochemiluminescent immunosensor using nitrogen-rich carbon nanodots was developed for efficient detection of the breast cancer biomarker HER2, showing a linear response to HER2 concentration and a detection limit of 20.4 pg mL-1. The biosensor demonstrated good stability and applicability in analyzing human serum samples, indicating great potential for early breast cancer diagnosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Polymer Science
Tianhui Niu, Chan Yao, Wei Xie, Shuran Zhang, Yanhong Xu
Summary: Phen-Eu@BPPD-CMP, a red luminescent europium ion doped CMP composite, can serve as a chemosensor for highly sensitive and selective detection of aluminum ions. The rapid detection capability of Al3+ may be attributed to the mutual promotion of pi-conjugated skeletons and the complementary coordination of Phen groups.
Article
Spectroscopy
Dan Li, San Tu, Yi Le, Yue Zhou, Lan Yang, Yuyu Ding, Lei Huang, Li Liu
Summary: A reactive fluorescent probe SCP with high quantum yield was designed and synthesized for detection of fluoride ions. The SCP exhibited excellent performance in physiological conditions, including 62.8% quantum yield, good selectivity, and the ability to image HepG2 cells.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Zhenzhen Lin, Fang Hu, Gang He, Youjun Yang, Yujun Liao, Xiao Luo, Xu-Dong Wang
Summary: A highly stable ratiometric fluorescent pH sensor was developed in this study, which accurately determines the pH value of solutions and allows color change to be observed with the naked eye.
Article
Environmental Sciences
Letian Chen, Yongli Liu, Guohao Cheng, Zegang Fan, Jinyu Yuan, Shuailong He, Guifen Zhu
Summary: A novel fluorescent probe based on N, B, F-CDs was successfully developed for highly sensitive and selective determination of STZ. The probe showed excellent spiked recoveries in various sample types, demonstrating its potential for environmental detection and monitoring.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agriculture, Multidisciplinary
Fang Sun, Liu Yang, Shijie Li, Yubo Wang, Ludi Wang, Ping Li, Fei Ye, Ying Fu
Summary: In this study, a dual-functional probe BHMH was synthesized and characterized for the simultaneous detection of Cu2+ and Fe3+, showing good sensitivity and selectivity for glyphosate. The probe quantitatively detected glyphosate in different samples and exhibited excellent imaging capabilities for living cells, especially for glyphosate for the first time.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Spectroscopy
Jun Wang, Shu-Yang Liu, Guan-Hua Yu, Hao-Ran Hu, Ying Fang, Shao-Jin Chen, Kun-Peng Wang, Zhi-Qiang Hu
Summary: A novel fluorescent probe B-Ch was designed based on the intramolecular charge transfer (ICT) effect for detecting ONOO-. The detection sensitivity of the probe was improved by replacing the diethylamine group with a hydroxyl group through molecular engineering. After the addition of ONOO-, noticeable changes in solution color and fluorescence were observed, which were visible to the naked eye. The probe exhibited excellent advantages such as visualization, good selectivity, low sensitivity (22.4 nM), good stability and biocompatibility, and exogenous and endogenous imaging of ONOO- in HeLa cells.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Applied
Li Tan, Yanru Li, Qian Lv, Yuyan Gan, Yuan Fang, Yu Tang, Lizhi Wu, Yuanxing Fang
Summary: Soluble UiO-66 has been developed as a co-catalyst to enhance the photocatalytic performance for CO2 reduction, resulting in a 1.5-fold increase in CO2 to CO conversion efficiency.
Article
Chemistry, Physical
Gaosheng Ren, Zhihui Su, Yu Tang, Weichen Du, Nan Xu, Chengyi Dai, Xiaoxun Ma
Summary: In this study, a strategy of in-situ synthesis and anchoring of nanoparticles was developed to design an excellent catalyst for CO2 electrochemical reduction. The designed jujube-cake catalyst, Ag@4-MBA, exhibited high loading of Ag species, dispersion, CO mass activity, faradaic efficiency, and CO production. DFT calculations and XPS characterization revealed that the electronic environment of the metal sites was optimized, promoting the stabilization of the reaction intermediate COOH*.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Sheng Wei, Hua Dai, Jiangping Long, Hongqiao Lin, Junkun Gu, Xupeng Zong, Dan Yang, Yu Tang, Yanhui Yang, Yihu Dai
Summary: Using BEA (Si/Al = 20) zeolite and dealuminated Si-BEA as supports, non-noble metal Co catalysts were prepared to investigate the relationship between catalyst structure and catalytic performance in propane dehydrogenation (PDH) reaction. The optimized 0.5 wt% Co@Si-BEA catalyst showed over 93% selectivity to propylene, high single-pass yield, and excellent regeneration stability at 590 degrees C. The catalyst contained isolated Co2+ cations anchored in the micropores of Si-BEA zeolites, serving as active sites to selectively activate C-H bonds of propane and leading to high propylene selectivity, activity, and long-term stability in PDH reaction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Yuyan Gan, Qian Lv, Yanru Li, Hua Yang, Kaiyang Xu, Lizhi Wu, Yu Tang, Li Tan
Summary: This study investigates the relationship between acid site control and the methane dehydroaromatization (MDA) reaction performance, and tunes the acid sites of the ZSM-5 zeolite by introducing promoters. The results show that appropriate strong Brønsted acid sites are favorable for aromatic formation, while excessive acid sites lead to coke deposition. The stability and aromatic selectivity of the MDA catalyst are further improved by passivating partial Brønsted acid sites using a Silicalite-1 coating.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Energy & Fuels
Caixia Zhu, Kaizhuang Xu, Yuan Fang, Qian Lv, Kun Jiang, Huibo Zhao, Yang Chen, Peng Wang, Hua Yang, Lizhi Wu, Yu Tang, Li Tan
Summary: This study optimized the design of Rh-based catalysts for ethanol synthesis from syngas by tuning the active sites, which improved the ethanol selectivity and catalytic performance. By doping Ce to change the carrier structure and stabilizing the active sites with promoted surface oxygen vacancies, the catalyst exhibited high catalytic activity.
Article
Chemistry, Applied
Lizhi Wu, Jinhe Wei, Ying Zhang, Yongsheng He, Xiaofang Wang, Haoquan Guo, Yu Tang, Li Tan
Summary: In this study, a co-modified zeolite catalyst (Co/TS-1) was prepared and evaluated for the catalytic hydrodeoxygenation of guaiacol. Experimental investigations revealed that the guaiacol conversion and cyclohexanol selectivity could be significantly improved by regulating the Ti and Co content as well as the reduction temperature. The introduction of appropriate Ti was found to modulate the catalyst sites, enhance the interaction between Co and support, and increase the reduction degree of the metal, resulting in higher HDO performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Adedamola A. Opalade, Yu Tang, Franklin (Feng) Tao
Summary: In this study, the importance of catalytic reforming of methane to produce syngas was investigated. It was found that singly dispersed Rh cations anchored on a CeO2 catalyst (Rh-1/CeO2) demonstrated high activity and selectivity for the production of syngas via partial oxidation of methane. The anchored Rh-1 atoms modified the electronic state of oxygen atoms proximal to them, triggering the catalytic activity of CeO2. This suggests that incorporating single atoms of transition metals to the surface of a reducible oxide can modulate the electronic state of the oxide support for selective formation of ideal products.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yuting Li, Yu Tang, Franklin (Feng) Tao
Summary: This article reports a new supported catalyst, Rh-1/P25, consisting of singly dispersed Rh-1 atoms anchored on TiO2 (P25) nanoparticles. The Rh-1/P25 catalyst exhibits high activity for C-N coupling and demonstrates selectivity of higher than 90% for producing tertiary amines in six hydroaminoalkylation reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Instruments & Instrumentation
Yu Tang, Luan Nguyen, Yuting Li, Franklin Tao
Summary: This study reports in situ/operando studies of catalytic reactions under high-temperature high-pressure (HTHP) conditions using x-ray absorption spectroscopy (XAS). A HTHP Catalysis-XAS system was built for characterizing the catalysts during catalysis. The system has been confirmed to be effective for in situ/operando characterizations of catalysts during HTHP catalysis.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Environmental Sciences
Nastaran Khademimoshgenani, Sarah A. Green
Summary: Dissolved organic matter (DOM) is a complex mixture of organic molecules from marine and terrestrial sources that significantly impact water quality. The molecular origins of DOM's optical properties have not been well-defined. This study investigates the possibility of reproducing DOM's optical signatures from simple aromatic precursors. The results suggest that melanin oligomers with varying degrees of oxidation mimic DOM's optical properties.
Article
Chemistry, Multidisciplinary
Peng Wang, Meng Yang, Huafei Liao, Kaiyang Xu, Xupeng Zong, Zailai Xie, Huibo Zhao, Yuanjie Xu, Hua Yang, Yuyan Gan, Yuan Fang, Lizhi Wu, Yu Tang, Li Tan
Summary: Restructuring of a catalyst is utilized to improve the activity and stability for propane dehydrogenation reaction. A bimetallic platinum and zinc catalyst protected by an in situ re-structured silicalite-1 zeolite is prepared. The catalyst shows outstanding activity and high stability, better than several commercial catalysts, due to the singly dispersed bimetallic sites and the protective layer formed by re-structuring of silicalite-1 zeolite.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Physical
Shuya Zhang, Xiaochen Liu, Yuanjie Xu, Yu Tang
Summary: This study investigates the production of methane from biomass molecules using hydrogenation techniques. The results show that reaction temperature and the type of nickel catalyst used significantly impact the hydrogenation pathways, with a shift towards hydrodeoxygenation at higher temperatures.
Article
Energy & Fuels
Peng Wang, Huafei Liao, Meng Yang, Lizhi Wu, Yu Tang, Li Tan
Summary: The deactivation of Pt-based catalysts in nonoxidative propane dehydrogenation reaction is a critical issue. To solve this problem, this study increases the amount of zinc in the preparation of Pt-Zn bimetallic catalyst, which effectively reduces the influence of zinc loss on the mobility of active metal. Simultaneously, the bimetallic structure modulates the surface acidity of zinc species, resulting in a well-dispersed Pt sites on the surface of Pt1Zn1 alloy that matches its high propylene selectivity.
Article
Chemistry, Physical
Kaiyang Xu, Yu Chen, Hua Yang, Yuyan Gan, Lizhi Wu, Li Tan, Yihu Dai, Yu Tang
Summary: A Pd1/ZSM-5 catalyst anchored in the micropores of zeolite has been designed, which shows remarkable catalytic activity in transforming anisole to cyclohexanone in water medium. The catalyst exhibits high selectivity and does not require the use of organic solvents or halogen promoters.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yingzhen Zhang, Denglong Ma, Yonggang Lei, Tianxue Zhu, Jun Hu, Yu Tang, Zhong Chen, Jianying Huang, Yuekun Lai, Zhiqun Lin
Summary: This study reports the substitution of oxygen evolution reaction (OER) with ammonia oxidation reaction (AOR) to enhance hydrogen evolution reaction (HER) efficiency. The experimental results demonstrate the important role of AOR in enhancing interfacial charge transfer and promoting active species generation. Compared to traditional OER-HER water splitting, the AOR-HER system shows a significant increase in hydrogen production.
