Article
Spectroscopy
Xianfa Zhang, Shuaibing Yu, Xuliang Pang, Xiaochen Ren, Bo Zhang, Jinming Kong, Lianzhi Li
Summary: A new Schiff base multiple correspondence fluorescent probe, (E)-2-(2-hydroxybenzylidene) hydrazine-1-carboxamid (L), was synthesized for selective sensing of Cu2+ and Mg2+ ions. L showed excellent selectivity and high sensitivity toward Cu2+ in turn off mode with a detection limit of 40.5 nM in 10 mM, pH = 7.0 PBS buffer. On the other hand, L exhibited highly selective and sensitive fluorescence sensing ability for Mg2+ in turn on mode with a detection limit of 9.5 nM when acetonitrile was used as the solvent. The binding modes of L with Cu2+ and Mg2+ were investigated, and satisfactory results were obtained when L was used to detect Cu2+ and Mg2+ in real water samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Optics
Minmin Wang, Linxia Lu, Wenwu Song, Xunyue Wang, Tongming Sun, Jinli Zhu, Jin Wang
Summary: The novel fluorescent probe L shows high sensitivity and a wide pH response range to Al3+, with low cytotoxicity and strong fluorescence emission in living cells. This suggests potential application prospects for detecting Al3+ in environmental and biological systems.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
R. Selva Kumar, S. K. Ashok Kumar
Summary: A dual-mode chemosensor based on phenanthroline dicarbohydrazide (L) was synthesized for selective and sensitive monitoring of Zr4+. The sensor showed selective distinct colorimetric response and a turn-on fluorescence when interacting with Zr4+ in DMSO:water (8:2, v/v) media. The sensor could form 1:2 stoichiometric complex with Zr4+ and work in a wide pH range of 3 to 8, with a LOD of 180 nM and 9 nM by UV-visible and spectrofluorometric analysis respectively.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Yuwei Dong, Jialin Ma, Zhou Yu, Xinxin Liu, Zhen Zhao
Summary: A reversible and easily assembled fluorometric probe QMAA was developed for the selective and sensitive detection of cadmium ion in DMF solution with PBS buffer. The strong fluorescence response of QMAA to Cd2+ was attributed to the formation of the QMAA-CdCl2 complex, inhibiting C=N isomerisation and PET. The detection limit of QMAA for Cd2+ was lower than the WHO-defined acceptable limit in drinking water.
INORGANICA CHIMICA ACTA
(2022)
Article
Biochemistry & Molecular Biology
Ling-Yi Shen, Xiao-Li Chen, Xian-Jiong Yang, Hong Xu, Ya-Li Huang, Xing Zhang, Carl Redshaw, Qi-Long Zhang
Summary: A novel turn-on fluorescence probe L has been designed with high selectivity and sensitivity for the quantification of Zn2+, with a detection limit of 9.53 x 10(-8) mol/L. Experimental results showed a 1:1 stoichiometric ratio of the complex formed by L and Zn2+, and strong quenching behavior was observed when Cu2+ displaced Zn2+ to coordinate with probe L.
Article
Spectroscopy
Cheng-lu Zhang, Xiang-ling Li, Yan-hua Jiang, Yi-ning Zhang, Yan-xuan Xie, Yue-dong Sun, Cui Liu
Summary: A ratiometric fluorescent probe (NQ) based on FRET was designed and synthesized, which showed high sensitivity and selectivity in detecting ClO-. It had a fast response time and strong anti-interference effect. Moreover, NQ could be applied to detect ClO- in real water samples and living cell imaging.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Jin-Tao Wang, Ying-Ying Pei, Ming-Yue Yan, Yu-Ge Li, Ge-Ge Yang, Cong-Hui Qu, Wen Luo, Jia Wang, Qing-Feng Li
Summary: QCPCH is a Schiff base quinoline derivative that serves as a turn-on fluorescent probe for detecting Zn2+ with high selectivity, sensitivity, and rapid response time. The mechanism of sensing Zn2+ is proposed to be based on the combined effects of CHEF and PET, which is further confirmed by various analytical methods.
MICROCHEMICAL JOURNAL
(2021)
Article
Spectroscopy
Yi-lin Mu, Li Pan, Qian Lu, Shu Xing, Ke-yin Liu, Xian Zhang
Summary: Lysosome, as an important organelle in intracellular transport, plays a crucial role in physiological processes. Designing multifunctional fluorescent probes capable of localizing in lysosome is of great importance.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Juan Liu, Peng-Yu Cheng, Sai Chen, Meng Wang, Kai Wei, Yuan Li, Yao-Yao Cao, Xing Wang, Hong-Lei Li
Summary: A fluorescent probe MPMC with high sensitivity and selectivity towards Cu2+ was successfully synthesized and characterized. The probe exhibited good anti-interference ability and reusability, making it a promising candidate for fluorescence quenching-based detection of Cu2+.
Article
Biochemistry & Molecular Biology
Yang Liu, Haoying Yang, Qian Liu, Mingming Pan, Danli Wang, Shiyuan Pan, Weiran Zhang, Jinfeng Wei, Xiaowei Zhao, Junfeng Ji
Summary: This study developed a nanocarrier for siRNA delivery based on a selenocystine analog engineered polyetherimide, achieving traceable siRNA delivery and synergistic killing of tumor cells. By utilizing a label-free fluorescence mechanism, the researchers were able to track siRNA delivery and monitor the local performance of the selenocystine analogs. Additionally, they found that this compound induced tumor cell senescence and achieved synergistic inhibition by delivering siRNA targeting anti-apoptotic genes in senescent cells.
Article
Chemistry, Inorganic & Nuclear
Dinesh Maity, Sibshankar Bari, Pritam Ghosh, Partha Roy
Summary: The new Schiff-base molecule H4LCl serves as a colorimetric and fluorescent pH probe, with fluorescence intensity and quantum yield increasing as pH of the medium increases. The pKa value is 7.18, with intensity enhancement occurring via an ICT-AIE controlled pathway, and naked eye detection is possible by noting color changes.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Ting Han, Sixia Ye, Musen Cheng, Yang Zhang, Lijie Dong
Summary: A stable fluorescent probe based on silica encapsulated quantum dots has been developed for rapid, sensitive and selective detection of cadmium ion. The probe exhibits a sensitive fluorescence response with a detection limit of 1.25 mu M and shows promising sensing performances in tap water and rice-washed water samples, indicating great potential for practical application.
Article
Chemistry, Physical
Yulong Liu, Lu Li, Yeqi Zhang, Ming Sheng, Yuanzhen Wang, Zhiyong Xing, Liu Yang, Mingli Yue, Ying Fu, Fei Ye
Summary: A novel multifunctional fluorescent probe based on a pyrene derivative, 4[(pyren-1-ylimino)methyl]benzene-1,3-diol (PBD), is reported for the recognition and quantification of Al3+, Cr3+, Fe3+, mesotrione, and Hg2+.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Organic
Yifan Mao, Stephanie Davis, Lin Pu
Summary: The dynamic covalent chemistry of imines is used to synthesize an unsymmetric (C-1) chiral macrocycle from the reaction of an unsymmetric (C-1) chiral dialdehyde with lysine. The enantioselectivity is enhanced in the presence of Zn2+. The resulting compound is a highly selective fluorescent probe for lysine.
Article
Chemistry, Multidisciplinary
Kai Lu, Hongyu Guo, Yixuan Jiang, Jiaqiao Yang, Shanshan Yu, Xiaoqi Yu, Lin Pu
Summary: A novel C-3 symmetric Schiff base compound (R,R,R)-6 has been synthesized and exhibits highly selective fluorescence enhancement with Zn2+ among 21 tested metal cations. Its sensitivity and selectivity surpass other related C-2 (1) and C-1 [(R)-9] symmetric compounds in fluorescent recognition of Zn2+. Mechanistic study suggests that the selective fluorescence enhancement is attributed to the formation of a unimolecular multidentate 6-coordinated Zn2+ complex.
