Dyes and Pigments p. 78 - 84 (2015)
Update date:2022-08-17
Topics:
Xiang, Kaiqiang
Liu, Yunchang
Li, Changjiang
Tian, Baozhu
Tong, Tianzhong
Zhang, Jinlong
Developing probes for selective and sensitive detection of hydrogen sulfide (H2S) has received much research attention, because H2S is an environmental toxin as well as an important signaling molecule to regulate physiological and pathological processes. In this work, a new colorimetric and ratiometric fluorescent probe (Probe 1) for H2S detection was synthesized by employing dicyanoisophorone based fluorescence dye as a fluorophore and azide group as the response unit. The synthesized Probe 1 showed a long emission wavelength (λem = 643 nm) and large stokes shift (λem - λabs = 163 nm). Based on the H2S-induced reduction of azide group to amino group, Probe 1 showed high response speed, sensitivity, and selectivity toward HS- under room temperature. Moreover, Probe 1 can ratiometrically respond to HS- and the detection limit is as low as 0.13 μM. It was proved that Probe 1 is suitable for quantitatively detecting HS- ions in river water samples. The numerous advantages of Probe 1 make it be potentially used for quantitative detection of H2S in environment and living organisms.
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Shenyang Xingzhenghe Chemical Co., Ltd.
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