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Styrylisoxazole-based fluorescent probes for the detection of hydrogen sulfide†
Photochemical & Photobiological Sciences ( IF 3.1 ) Pub Date : 2017-11-07 00:00:00 , DOI: 10.1039/c7pp00331e
Jagadish Katla 1, 2, 3, 4 , Sriram Kanvah 1, 2, 3, 4
Affiliation  

Styrylisoxazoles bearing a nitro group linked to bulky aromatic rings have been synthesized and examined for their absorption and emission studies in organic solvents and water. The molecules showed emission in the visible region with significant solvatochromic emission shifts influenced by the extended conjugation of aromatic rings and intramolecular charge transfer. These absorption and emission changes were used for the efficient and sensitive detection of trace concentrations of hydrogen sulfide (H2S) through the reduction of the nitro group to the amine group in the presence of aqueous sodium sulfide. The experimental results indicated that the probes exhibit an excellent emission response with large shifts in the emission and sensitivity with a micromolar detection limit.

中文翻译:

基于苯乙烯基恶唑的荧光探针可检测硫化氢

已经合成了带有与庞大的芳族环连接的硝基的苯乙烯基恶唑,并对其在有机溶剂和水中的吸收和发射研究进行了研究。分子在可见光区显示发射,且受芳香族环的扩展共轭作用和分子内电荷转移的影响,溶剂化显色发射发生明显变化。这些吸收和发射变化用于在硫化钠水溶液存在下通过将硝基还原为胺基来有效和灵敏地检测痕量浓度的硫化氢(H 2 S)。实验结果表明,该探针显示出极佳的发射响应,并且发射变化很大,灵敏度为微摩尔检测极限。
更新日期:2017-11-07
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