一种近红外发射荧光探针的合成及其荧光增强识别Hg^(2+)

A Near-Infrared Emitting Fluorescent Probe: Synthesis and Fluorescent “Turn-On” Recognition of Hg^(2+)

汞离子(Hg^(2+))由于高毒性以及容易对环境和人体造成损害,其检测越来越受到人们的重视。本文基于4-(二乙氨基)水杨醛设计合成了一种近红外发射荧光探针L,该探针可在MeCN/HEPES(体积比2/8,pH=7.4)缓冲溶液中高选择性地荧光增强识别Hg^(2+),其具有合成简便、抗干扰能力强、适用pH范围宽等特点。进一步研究表明,探针L可用于真实水样中Hg^(2+)的检测。

Mercury ions(Hg^(2+)) are highly toxic and can easily cause damage to the environment and the human body. Therefore, the detection of Hg^(2+) has attracted much attention. In this paper, a fluorescent probe L was designed and synthesized based on 4-(diethylamino) salicylaldehyde. Probe L can recognize Hg^(2+) with high selectivity through "Off-On" fluorescent response in MeCN/HEPES(2/8, v/v, pH=7.4) buffer solution. It has the characteristics of simple synthesis, strong anti-interference ability, near-infrared emission(660 nm), and wide applicable pH range. Further research showed that the probe L can be used for the detection of Hg^(2+) in real water samples.