一种荧光增强的反应型硫化氢荧光探针
发布时间：2018-11-13 15:34
【摘要】：基于二硝基苯醚的硫解反应识别机制,设计合成了羟基芘甲醛为荧光基团的探针分子8-(2,4-二硝基苯酚基)芘甲醛(PCNP),研究了PCNP缓冲溶液分散体系对H_2S的响应.未与H_2S作用时,分子内光致电子转移过程导致探针分子PCNP几乎不发光,当体系中存在H_2S时,PCNP发生硫解反应,光致电子转移过程被阻断,羟基芘甲醛发出橙色荧光.PCNP分子对H_2S响应迅速、灵敏,0.1 mmol·L~(-1)硫化氢存在下10 min内荧光强度响应达到最大值,荧光增强达260倍,反应速率常数为0.20 min~(-1),探针分子对H_2S检测限为0.10μmol·L~(-1),并且具有良好选择性.
[Abstract]:Based on the recognition mechanism of thiolysis of dinitrophenyl ethers, a probe molecule 8- (2o _ 4-dinitrophenol) pyrene (PCNP), was designed and synthesized to study the response of PCNP buffer solution dispersion system to H _ 2S. In the absence of H _ 2S, intramolecular photoinduced electron transfer resulted in almost no luminescence of probe molecule PCNP. When H _ 2S was present in the system, PCNP reacted with sulfur and the photoinduced electron transfer process was blocked. In the presence of 0.1 mmol L ~ (-1) hydrogen sulfide, the response of PCNP molecule to H _ 2S reached the maximum in 10 min, and the fluorescence increased by 260 times. The reaction rate constant was 0.20 min~ (-1), and the detection limit of the probe was 0.10 渭 mol L ~ (-1), and the probe had good selectivity.
【作者单位】： 中国科学院理化技术研究所光化学转换与功能材料重点实验室;
【基金】：国家自然科学基金(No.21233011) 国家重点基础研究发展计划(973计划,Nos.2013CB834703,2013CB834505)资助项目~~
【分类号】：O657.3
[Abstract]:Based on the recognition mechanism of thiolysis of dinitrophenyl ethers, a probe molecule 8- (2o _ 4-dinitrophenol) pyrene (PCNP), was designed and synthesized to study the response of PCNP buffer solution dispersion system to H _ 2S. In the absence of H _ 2S, intramolecular photoinduced electron transfer resulted in almost no luminescence of probe molecule PCNP. When H _ 2S was present in the system, PCNP reacted with sulfur and the photoinduced electron transfer process was blocked. In the presence of 0.1 mmol L ~ (-1) hydrogen sulfide, the response of PCNP molecule to H _ 2S reached the maximum in 10 min, and the fluorescence increased by 260 times. The reaction rate constant was 0.20 min~ (-1), and the detection limit of the probe was 0.10 渭 mol L ~ (-1), and the probe had good selectivity.
【作者单位】： 中国科学院理化技术研究所光化学转换与功能材料重点实验室;
【基金】：国家自然科学基金(No.21233011) 国家重点基础研究发展计划(973计划,Nos.2013CB834703,2013CB834505)资助项目~~
【分类号】：O657.3
【相似文献】
相关期刊论文 前10条
1 王姗姗;;小分子荧光探针在硫醇检测中的最新研究进展[J];科技信息;2010年23期
2 向雨秘;龙少波;朱R，
本文编号：2329570
本文链接：https://www.wllwen.com/kejilunwen/huaxue/2329570.html
教材专著
