四苯乙烯衍生物在γ射线检测中的应用
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- 英文论文题名：A Facile and Convenient Fluorescent Probe for Gamma-Ray Radiation Based on Tetraphenylethylene Derivatives
- 论文作者：董小彪 ; 张关心 ; 张德清
- 英文论文作者：Xiaobiao Dong ; Zhang Guanxin ; Zhang Deqing ; Institute of Chemistry ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院化学研究所;
- 论文关键词：聚集诱导荧光 ; γ射线 ; 四苯乙烯
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十七分会：光化学
- 语种：中文
- 分类号：O657.35
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十七分会 ; 光化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：269k
- 原文格式：D
- 会议级别：全国
摘要
众所周知,γ射线对人体有很大伤害,并存在于许多领域,例如核、食品、医药等,因此γ射线检测受到了人们广泛的关注。目前对于γ射线的检测手段主要是热致发光、电离室等,但这些方法都存在一些缺点,例如有些技术不能在常温下进行,或者不能产生实时信号等。而荧光测试法以其高灵敏度和易操作性得到关注。本文中我们报道了一种以四苯乙烯衍生物作为荧光探针的γ射线检测方法。检测原理如图1所示:(1)化合物1具有聚集诱导荧光(AIE)效应,其在CHCl_3等卤代溶剂中溶解较好,因此荧光很弱;(2)当CHCl_3或者CH_2Cl_2等卤代烃分子被γ射线照射后会分解生成H.和Cl.,进一步结合生成HCl;[1](3)产生的HCl使化合物1中的吲哚基团质子化,生成在CHCl_3中溶解度不好的1-HCl,导致溶液的荧光增强。同时由于化合物1-HCl会发生分子内电荷转移,使溶液的吸收和发射发生红移而具有红色荧光。研究结果表明,该方法具有探针分子易合成,灵敏度高,检测现象肉眼可见等优点。
We report a facile and convenient fluorescence turn on detection of gamma-ray radiation based on compound 1. This new method is designed by the combination of AIE behavior of TPE compounds and the fact that CHCl_3 can be degraded upon gamma-ray radiation to form HCl which will protonate compound 1 and result in aggregation. This fluorometric turn-on detection of gamma-ray radition possesses the following features: 1) compound 1 is easily synthesized; 2) gamma-ray radiation as low as 0.024 Gy dose can be detected and thus the sensitivity toward gamma-ray radiation is relatively low; 3) the detection of gamma-ray radition is visible to the naked eyes.
We report a facile and convenient fluorescence turn on detection of gamma-ray radiation based on compound 1. This new method is designed by the combination of AIE behavior of TPE compounds and the fact that CHCl_3 can be degraded upon gamma-ray radiation to form HCl which will protonate compound 1 and result in aggregation. This fluorometric turn-on detection of gamma-ray radition possesses the following features: 1) compound 1 is easily synthesized; 2) gamma-ray radiation as low as 0.024 Gy dose can be detected and thus the sensitivity toward gamma-ray radiation is relatively low; 3) the detection of gamma-ray radition is visible to the naked eyes.
引文
[1]Han,J.M.;Xu,M.;Wang,B.;Wu,N.;Yang,X.M.;Yang,H.R.;Salter,B.J.;Zang,L.J.Am.Chem.Soc.,2014,136,5090.