当前位置: X-MOL 学术ChemistrySelect › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Studies on Fluorescence Quenching of DBSA‐PANI‐Employing Nitroaromatics.
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-03-06 , DOI: 10.1002/slct.201702992
Venkatappa Lakshmidevi 1 , Chennabasaveshwara V. Yelamaggad 2 , Abbaraju Venkataraman 1, 3
Affiliation  

Owing to their high selectivity and excellent sensitivity, fluorescence‐based sensors have continued to receive increasing attention.In particular, fluorescence techniques for sensing explosives, the high energy materials, with the aid of inexpensive and feasible ingredients have become a centre of attraction in recent years.However, the development of such economically viable and reliant materials has remained highly elusive. Herein we report such a novel fluorescent sensor namely, dodecylbenzene‐sulfonic acid (DBSA)‐doped polyaniline (PANI), which recognizes the presence of nitroaromatic (NAC) explosives, such as 2,4,6‐trinitro phenol (picric acid)(PA), 1,3‐dinitrobenzene (DNB) and nitrobenzene (NB), in solutions at lower concentrations. This is the first demonstration of its kind where the fluorescent polyaniline is shown to facilitate the detection of NACs by oxidative fluorescence quenching phenomenon. The fluoroscence quenching of DBSA‐PANI by NACs has been carried out using N‐methyl pyrrolidone and quenching efficiency has been estimated by Stern−Volmer equation. Especially, the DBSA‐PANI system turns out to be a promising fluorescent probe for the detection of phenolic nitro‐explosive (PA) with high sensitivity and a high Stern Volmer constant. The quenching phenomenon, where DBSA‐PANI and NACs interact intensively via intermolecular π‐π interactions, involves a photo induced electron‐transfer process that has been evidenced by spectroscopic and redox studies.

中文翻译:

使用硝基芳香族化合物的DBSA-PANI的荧光猝灭研究。

由于其高选择性和出色的灵敏度,基于荧光的传感器继续受到越来越多的关注。特别是,用于感测爆炸物,高能材料的荧光技术,借助廉价且可行的成分,已成为近来吸引人们关注的焦点。然而,这种经济上可行和依赖的材料的开发仍然高度难以捉摸。本文中我们报道了一种新型的荧光传感器,即十二烷基苯磺酸(DBSA)掺杂的聚苯胺(PANI),它可以识别硝基芳香族(NAC)爆炸物的存在,例如2,4,6-三硝基苯酚(苦味酸)(浓度较低的溶液中的PA),1,3-二硝基苯(DNB)和硝基苯(NB)。这是同类产品中的第一个演示,其中荧光聚苯胺显示出可通过氧化性荧光猝灭现象促进NAC的检测。使用N-甲基吡咯烷酮对NAC进行DBSA-PANI的荧光猝灭进行了荧光猝灭,并且通过Stern-Volmer方程估算了猝灭效率。特别是,DBSA-PANI系统被证明是一种有前途的荧光探针,具有高灵敏度和高Stern Volmer常数,可用于检测酚类硝基爆炸物(PA)。DBSA-PANI和NAC通过分子间π-π相互作用强烈相互作用的猝灭现象涉及光诱导的电子转移过程,这已通过光谱学和氧化还原研究得到了证明。使用N-甲基吡咯烷酮对NAC进行DBSA-PANI的荧光猝灭进行了荧光猝灭,并且通过Stern-Volmer方程估算了猝灭效率。特别是,DBSA-PANI系统被证明是一种有前途的荧光探针,具有高灵敏度和高Stern Volmer常数,可用于检测酚类硝基爆炸物(PA)。DBSA-PANI和NAC通过分子间π-π相互作用强烈相互作用的猝灭现象涉及光诱导的电子转移过程,这已通过光谱学和氧化还原研究得到了证明。使用N-甲基吡咯烷酮对NAC进行DBSA-PANI的荧光猝灭进行了荧光猝灭,并通过Stern-Volmer方程估算了猝灭效率。特别是,DBSA-PANI系统被证明是一种有前途的荧光探针,具有高灵敏度和高Stern Volmer常数,可用于检测酚类硝基爆炸物(PA)。DBSA-PANI和NAC通过分子间π-π相互作用强烈相互作用的猝灭现象涉及光诱导的电子转移过程,这已通过光谱学和氧化还原研究得到了证明。事实证明,DBSA-PANI系统是一种有前途的荧光探针,具有高灵敏度和高Stern Volmer常数的酚醛硝基爆炸物(PA)检测。DBSA-PANI和NAC通过分子间π-π相互作用强烈相互作用的猝灭现象涉及光诱导的电子转移过程,这已通过光谱学和氧化还原研究得到了证明。事实证明,DBSA-PANI系统是一种有前途的荧光探针,具有高灵敏度和高Stern Volmer常数的酚醛硝基爆炸物(PA)检测。DBSA-PANI和NAC通过分子间π-π相互作用强烈相互作用的猝灭现象涉及光诱导的电子转移过程,这已通过光谱学和氧化还原研究得到了证明。
更新日期:2018-03-06
down
wechat
bug