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Synthesis, characterization and fluorescence quenching of conjugated polymer containing triphenylamine

LIU Feng, XIAO Jianhua, REN Weihua, HU Jun, LIU Honglai

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 428-433 doi: 10.1007/s11705-008-0083-3

Abstract: Their applications in the detection of nitro compounds were investigated, and the results show high fluorescencequenching sensitivity of the end-capped polymer towards -nitrotoluene (-NT).When the concentration of -NT was 21.5 × 10 mol/L, the fluorescence quenching reached 96%.quenchers such as dinitrotoluene (DNT), -nitrobenzoquinone (-BQ) and -nitrotoluene (-NT) for 600 s, its fluorescencequenching reached 93.6%, 11.5% and 77.9%, respectively.

Keywords： detection     different     fluorescence     UV-Vis     end-capped polymer    

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Biosorption of Cu(II) to extracellular polymeric substances (EPS) from

Xiangliang PAN, Jing LIU, Wenjuan SONG, Daoyong ZHANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 493-497 doi: 10.1007/s11783-012-0416-9

Abstract: (cyanobacterium) with Cu(II) was investigated using fluorescence spectroscopy.Three fluorescence peaks were found in the excitation-emission matrix (EEM) fluorescence spectra of EPSFluorescence of peaks A, B, and C could be quenched by Cu(II).The effective quenching constants (lg K ) were 2.8–5.84 for peak A, 6.4–9.24 for peak B, and 3.48–6.68The values of lg K showed a decreasing trend with increasing temperature, indicating that the quenching

Keywords： biosorption     conditional binding constant     extracellular polymeric substances (EPS)     fluorescence quenching    

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Quantitative characterization of Cu binding potential of dissolved organic matter (DOM) in sediment from Taihu Lake using multiple techniques

Yuan ZHANG,Yan ZHANG,Tao YU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 666-674 doi: 10.1007/s11783-013-0608-y

Abstract: between Cu(II) and DOM extracted from Taihu Lake sediments using ion selective electrode (ISE) and fluorescencequenching technology.The fluorescence quenching results indicated that humic substances played a key role in the complexation

Keywords： binding ability     dissolved organic matters     fluorescence quenching     complex capacity     Taihu Lake    

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Synthesis and fluorescence behavior of 2,5-diphenyl-1,3,4-oxadiazole-containing bismaleimides and bissuccinimides

Xin ZHANG, Zichen LI

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 381-387 doi: 10.1007/s11705-013-1359-9

Abstract: Almost no or very weak fluorescence was observed for these bismaleimides, however, the bissuccinimidesshow a strong fluorescence.The effect of molecular geometry on optical behavior and fluorescence quenching mechanism were investigatedby UV-vis absorption and fluorescence emission spectroscopy.Polymerizable C=C bonds play a key role in the intramolecular fluorescence quenching.

Keywords： fluorescence     bismaleimide     oxadiazole     succinimide    

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Synthesis and characterization of 2,5-bis[4-(2-arylvinyl)phenyl]-1,3,4-oxadiazoles with two-photon fluorescence

ZHU Xiaoqin, QIAN Ying, LU Zhifeng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 4,   Pages 381-384 doi: 10.1007/s11705-007-0069-6

Abstract: phenyl]-1,3,4-oxadiazoles that exhibit strong two-photon absorption and enhanced two-photon excited fluorescence-conjugated bridging unit can enhance the two-photon absorption and two-photon fluorescence.

Keywords： 2-arylvinyl     trans-vinylene character     effective     fluorescence     push-core-pull-core-push    

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hydrophobic environment triggering reactive fluorescence probe to real-time monitor mitochondrial DNA

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1,   Pages 92-102 doi: 10.1007/s11705-021-2063-9

Abstract: Herein, we constructed an in situ hydrophobic environment-triggering reactive fluorescence probeMeanwhile, MBI-CHO immediately emitted a significative fluorescence signal changes at 437 and 553 nm

Keywords： hydrolysis reaction     mitochondrial DNA damage     in situ hydrophobic environment trigger     fluorescence    

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Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 298-306 doi: 10.1007/s11705-022-2212-9

Abstract: The carbon dots-based sensor (CA-CDs) exhibited pH-dependent increase in fluorescence intensity and showedNotably, the fluorescence sensor has a reversible response to pH change.

Keywords： carbon dots     two-photon imaging     pH     diabetic mice    

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Insight into fluorescence properties of 14 selected toxic single-ring aromatic compounds in water: Experimental

Muhammad Farooq Saleem Khan, Jing Wu, Cheng Cheng, Mona Akbar, Chuanyang Liu, Bo Liu, Jian Shen, Yu Xin

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1219-z

Abstract: The fluorescence peak location of 14 compounds interpreted at protein-like region.The fluorescence excitation-emission matrix (EEMs) spectrophotometry is a useful method to identify organicThis study provides a detailed insight into the fluorescence properties of the 14 selected toxic single-ringThe fluorescence of halogenated benzenes illustrates an increase in the HOMO-LUMO energy gap and a decreaseThe understanding of fluorescence and photophysical properties are of great importance in the identification

Keywords： Fluorescence     Photophysical properties     Effect of the substituent     Toxic aromatic compounds    

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Cd-tolerant electrochemically active bacteria in MECs toward exotic Cr(VI) based on the sensing of fluorescence

Xia Hou, Liping Huang, Peng Zhou, Hua Xue, Ning Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1057-4

Abstract:

Cell membrane of indigenous Cd-tolerant EAB harbored more cadmium than chromium.

Indigenous Cd-tolerant EAB cytoplasm located more chromium than cadmium.

Simultaneously quantitatively imaging Cd(II) and Cr(III) ions in EAB was achieved.

Current accelerated the harboring of cadmium in EAB at an initial 2 h.

Current directed the accumulation of more chromium in EAB over time.

Keywords： Microbial electrolysis cell     Electrochemically active bacteria     Cd-tolerant bacteria     Cd(II) and Cr(VI)     Fluorescence    

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Study on Quenching of Engine Cylinder Block by YAG Laser

Zhang Guoshun,Zhang Taishi,Yang Zhaoxia,Zhang Jian,Li Hefen,Zhao Aiguo

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 68-70

Abstract: presents the new research achievements and experiment results of the application of 500 W CW YAG laser quenchingfor engine cylinder block, and then analyses the advantages of YAG laser quenching compared with C〇2 laser quenching.Laser quenching in high precision mesh is realized by software controlling .

Keywords： YAG laser quenching     engine cylinder     vertical diamond number     horizontal diamond number     local densified    

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Excitation-emission matrix (EEM) fluorescence spectroscopy for characterization of organic matter in

Jinlan Yu, Kang Xiao, Wenchao Xue, Yue-xiao Shen, Jihua Tan, Shuai Liang, Yanfen Wang, Xia Huang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1210-8

Abstract: • Principles and methods for fluorescence EEM are systematically outlined. • Fluorophore peak/regionThree-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy, a powerful tool forThis paper revisits the principles and methods of fluorescence EEM, and reviews the recent progress inWe systematically introduced the information extracted from EEM by considering the fluorescence peakare summarized for potential use, including quantum yield, Stokes shift, excited energy state, and fluorescence

Keywords： excitation-emission matrix (EEM)     dissolved organic matter (DOM)     membrane bioreactor (MBR)     fluorescence    

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Fluorescence detection of phosphate in an aqueous environment by an aluminum-based metal-organic framework

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1594-8

Abstract:

● A novel Al-MOF was successfully synthesized by a facile solvothermal method.

Keywords： Fluorescence     Metal-organic framework     Phosphate     Detection     Al-MOF    

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Probing the redox process of

Rui Lu, Wei Chen, Wen-Wei Li, Guo-Ping Sheng, Lian-Jun Wang, Han-Qing Yu

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0905-y

Abstract: The benzoquinone reduction state has a lower fluorescence quantum efficiency.This method can analyze compounds with fluorescence and electrochemical activities.In this work, electrochemical methodology was combined with two fluorescence spectroelectrochemical techniques, cyclic volta- fluorescence spectrometry (CVF) and derivative cyclic volta- fluorescence spectrometryThe fluorescence intensity was found to vary along with the electrochemical oxidation and reduction of

Keywords： p-Benzoquinone     Electrochemistry     Fluorescence     Spectroelectrochemistry     Derivative cyclic voltafluorescence    

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Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structural

Shuang XUE, Qingliang ZHAO, Liangliang WEI, Xiujuan HUI, Xiping MA, Yingzi LIN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 784-796 doi: 10.1007/s11783-012-0436-5

Abstract: This work investigated the effect of granular activated carbon adsorption (GACA) on fluorescence characteristicsorganic matter (DOM) in secondary effluent, by means of excitation–emission matrix (EEM) spectra, the fluorescenceregional integration (FRI) method, synchronous spectra, the fluorescence index defined as the ratioof fluorescence emission intensity at wavelength 450 nm to that at 500 nm at excitation ( )=370 nm, andAll five fractions had decreased fluorescence indices as a result of GACA.

Keywords： granular activated carbon adsorption     dissolved organic matter     fractionation     fluorescence    

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Comparison of masking agents for antimony speciation analysis using hydride generation atomic fluorescence

Jianhong XI,Mengchang HE,Kunpeng WANG,Guizhi ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 970-978 doi: 10.1007/s11783-014-0716-3

Abstract: selective generation of stibine from Sb(III) in a continuous flow system using non-dispersive atomic fluorescenceThe effects of the HCl concentration on the fluorescence intensities of Sb(III) and Sb(V) were investigatedThe results indicated that atomic fluorescence emission due to Sb(V) can constructively interfere withThe effects of the concentrations of the masking agents and of HCl on the fluorescence signals from Sb

Keywords： Sb(III)     Sb(V)     determination     masking agents     hydride generation (HG-AFS)    

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Title Author Date Type Operation

Synthesis, characterization and fluorescence quenching of conjugated polymer containing triphenylamine

LIU Feng, XIAO Jianhua, REN Weihua, HU Jun, LIU Honglai

Journal Article

Biosorption of Cu(II) to extracellular polymeric substances (EPS) from

Xiangliang PAN, Jing LIU, Wenjuan SONG, Daoyong ZHANG

Journal Article

Quantitative characterization of Cu binding potential of dissolved organic matter (DOM) in sediment from Taihu Lake using multiple techniques

Yuan ZHANG,Yan ZHANG,Tao YU

Journal Article

Synthesis and fluorescence behavior of 2,5-diphenyl-1,3,4-oxadiazole-containing bismaleimides and bissuccinimides

Xin ZHANG, Zichen LI

Journal Article

Synthesis and characterization of 2,5-bis[4-(2-arylvinyl)phenyl]-1,3,4-oxadiazoles with two-photon fluorescence

ZHU Xiaoqin, QIAN Ying, LU Zhifeng

Journal Article

hydrophobic environment triggering reactive fluorescence probe to real-time monitor mitochondrial DNA

Journal Article

Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Journal Article

Insight into fluorescence properties of 14 selected toxic single-ring aromatic compounds in water: Experimental

Muhammad Farooq Saleem Khan, Jing Wu, Cheng Cheng, Mona Akbar, Chuanyang Liu, Bo Liu, Jian Shen, Yu Xin

Journal Article

Cd-tolerant electrochemically active bacteria in MECs toward exotic Cr(VI) based on the sensing of fluorescence

Xia Hou, Liping Huang, Peng Zhou, Hua Xue, Ning Li

Journal Article

Study on Quenching of Engine Cylinder Block by YAG Laser

Zhang Guoshun,Zhang Taishi,Yang Zhaoxia,Zhang Jian,Li Hefen,Zhao Aiguo

Journal Article

Excitation-emission matrix (EEM) fluorescence spectroscopy for characterization of organic matter in

Jinlan Yu, Kang Xiao, Wenchao Xue, Yue-xiao Shen, Jihua Tan, Shuai Liang, Yanfen Wang, Xia Huang

Journal Article

Fluorescence detection of phosphate in an aqueous environment by an aluminum-based metal-organic framework

Journal Article

Probing the redox process of

Rui Lu, Wei Chen, Wen-Wei Li, Guo-Ping Sheng, Lian-Jun Wang, Han-Qing Yu

Journal Article

Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structural

Shuang XUE, Qingliang ZHAO, Liangliang WEI, Xiujuan HUI, Xiping MA, Yingzi LIN

Journal Article

Comparison of masking agents for antimony speciation analysis using hydride generation atomic fluorescence

Jianhong XI,Mengchang HE,Kunpeng WANG,Guizhi ZHANG

Journal Article