摘要：阴离子作为自然界和生物界中重要的组成部分，是环境、生命和医药等领域重要的研究重点之一。由于氟离子具有电负性强，原子半径小等特点，一直深受科研工作者的关注。

二苯乙烯基苯衍生物由于其合成较为简单，稳定性好、量子产率高等特点，在阴离子识别领域发挥着重要作用。

本课题合成出一种基于氟引发的二苯乙烯基苯衍生物双Si-O键裂解的氟离子化学计量器。添加F离子后，探针5显示出从蓝色到淡黄色的明显荧光颜色变化，发射波长（〜100 nm）发生显著的红移，对氟化物的选择性高于其它普通阴离子。70081

通过探讨受体与F离子的紫外光谱，荧光光谱，滴定实验，进而以光谱分析数据来研究荧光探针本身对F离子的检测灵敏性，进一步验证试验方案的构想，为后续进行深入的研究工作提供理论指导。

毕业论文关键词：阴离子识别；二苯乙烯基苯类；荧光探针；光谱研究；硅氧键

Investigation of spectroscopy of distyrylbenzens derivatives containing dual Si-O groups

Abstract: As an important ion part of nature and biology, are one of the important research priorities in the fields of environment, life and medicine. The fluoride ion has a strong electronegativity, atomic radius and other characteristics, which has been deeply concerned by the researchers.

The synthesis of distyrylbenzenes derivatives is relatively simple, good stability, high quantum yield characteristics, so it plays an important role in the field of anion recognition.

In this paper, a fluoride ion chemosensor (5) based on F-triggered distyrylbenzenes derivatives and double Si-O groups cleavage was synthesized. After addition of fluoride ions, chemosensor (5) showed a significant color change from colorless to pale yellow, with a significant red shift at the emission wavelength (~ 100 nm) and higher selectivity to fluoride than other common anions.

The sensitivity of the fluorescent probe fluoride ions was further investigated By studying the UV spectra, fluorescence spectra and titration experiments of the acceptor and fluoride ions. The idea of the test protocol was further verified, and the further research work was carried out. In order to provide theoretical guidance.

Keywords: Anion Recognition; Distyrylbenzenes; Fluorescent probe; Spectroscopic Investigation; Si-O bonding

目录

1. 前言 1

1.1阴离子识别的重要性 2

1.2阴离子识别的方法 2

1.2.1氢键作用法 2

1.2.2取代法 3

1.2.3化学反应法 3

1.3荧光探针的简介及其应用价值 4

1.3.1电子转移 5

1.3.2电荷转移 5

1.3.3质子转移 6

1.3.4能量转移 6

1.3.5取代基转移 6

1.4 F¯识别的研究历程 7

1.4.1 F¯作用于N-H键的荧光探针 7

1.4.2 F¯作用于Si-O/C键的荧光探针 8

1.5选题依据与研究内容 10

2. 实验方案和合成工艺路线 10

2.1实验方案的确定 10

2.2确定反应确定实验路线及识别机理过程