A near-infrared fluorescent probe for sulfide detection

•The probe works at near-infrared light regions.•The probe functions as an “off-on” sensor for S2−.•The detection limit for S2− is 0.15μM. Sulfide plays distinct roles in biological systems. More sensitive probes are essential for the fluorescent detection of S2−. The NIR probe IR800-DPII, which has...

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Published inSensors and actuators. B, Chemical Vol. 242; pp. 332 - 337
Main Authors Yang, Xiaojing, Zhang, Chengkai, Shen, Liqiao, Bao, Haibo, Xu, Jingwei, Fang, Xuexun, Zhao, Yongxia, Yang, Wei
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 01.04.2017
Elsevier Science Ltd
Subjects
Chemical synthesis
Fluorescence
Fluorescent indicators
Heptamethine cyanine
NIR probe
Sensitivity analysis
Substrates
Sulfide compounds
Sulfide sensor
Sulfide sensor
Heptamethine cyanine
NIR probe
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Summary:•The probe works at near-infrared light regions.•The probe functions as an “off-on” sensor for S2−.•The detection limit for S2− is 0.15μM. Sulfide plays distinct roles in biological systems. More sensitive probes are essential for the fluorescent detection of S2−. The NIR probe IR800-DPII, which has been synthesized based on heptamethine cyanine and NBD, is able to function as an “off-on” fluorescence sensor for detecting S2− through substrate-induced cleavage mechanism.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2016.11.064