以铝离子为可逆光驱动传感器的热稳定光致变色螺吡喃在水溶液中的部花青形式

Thermally Stable Merocyanine Form of Photochromic Spiropyran with Aluminum Ion as a Reversible Photo-driven Sensor in Aqueous Solution.

作者信息

Ren Jiaqiang, Tian He

机构信息

Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science & Technology, Shanghai 200237, P. R. China.

出版信息

Sensors (Basel). 2007 Dec 6;7(12):3166-3178. doi: 10.3390/s7123166.

DOI:10.3390/s7123166

PMID:28903287

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3841888/

Abstract

A reversible photo-driven sensor for aluminum ions based on photochromicspiropyran was reported with rapid response time. The detection of aluminum wasperformed via the chelation of aluminum ions with the merocyanine form (MC) ofphotochromic spiropyran. ¹H NMR studies confirmed the conversation from the MC forminto the Al -MC form. Addition of aluminum ions to the spiropyran (SP) in a MeCN/H₂Omixture results in obvious color changes with a loss in absorbance at 539 nm and anenhancement in absorbance at about 420 nm after irradiation at 365 nm. The metal chelationcomplex (Al -MC) can also be converted into the original SP form by irradiation withvisible light. Aluminum ions can be detected down to 0.5 μM levels in a fast response ofless than 5 seconds with no interference from other ionic species.

摘要

报道了一种基于光致变色螺吡喃的用于铝离子的可逆光驱动传感器，其具有快速响应时间。铝的检测是通过铝离子与光致变色螺吡喃的部花青形式（MC）螯合来进行的。¹H NMR研究证实了从MC形式到Al -MC形式的转变。在MeCN/H₂O混合物中向螺吡喃（SP）添加铝离子会导致明显的颜色变化，在365nm照射后，539nm处的吸光度降低，约420nm处的吸光度增强。金属螯合配合物（Al -MC）也可以通过可见光照射转化为原始的SP形式。在不到5秒的快速响应中，铝离子的检测下限可达0.5μM水平，且不受其他离子种类的干扰。