Deshmukh Sharad Chandrakant, Rana Shammi, Shinde Sopan Valiba, Dhara Barun, Ballav Nirmalya, Talukdar Pinaki
Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
ACS Omega. 2016 Sep 30;1(3):371-377. doi: 10.1021/acsomega.6b00136. Epub 2016 Sep 14.
An amphiphilic pyrene derivative exhibiting unusually stable excimer emission due to strong aggregation is presented. The aggregated system served as an intelligent sensor for metal ions and nitro explosives in aqueous media. The excimer displayed excellent selectivity toward Cu among the tested cations. The observation was interpreted on the basis of chelation of metal ions involving the hydroxyl and amino groups of two molecules, leading to the ligand-to-metal charge-transfer (CT) process. The excimer was further applied for the cell imaging of Cu ions. Also, while treating the excimer with various nitro explosives, it displayed efficient 2,4,6-trinitrophenol sensing, corroborating mainly the CT process from pyrene to the analyte due to intercalation of the analyte within pyrene.
本文介绍了一种两亲性芘衍生物，由于强烈聚集而呈现出异常稳定的准分子发射。该聚集体系可作为水性介质中金属离子和硝基炸药的智能传感器。在测试的阳离子中，准分子对铜表现出优异的选择性。该现象基于两个分子的羟基和氨基与金属离子的螯合作用进行解释，从而导致配体到金属的电荷转移（CT）过程。该准分子进一步应用于铜离子的细胞成像。此外，在用各种硝基炸药处理准分子时，它表现出对2,4,6-三硝基苯酚的高效传感，这主要证实了由于分析物插入芘中而导致的从芘到分析物的CT过程。
