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Synthesis and One/two-photon Fluorescence Performance of a New Triphenylamine Derivative

Author: JiaMeiLin
Tutor: WangZuoMei
School: Suzhou University
Course: Materials Science
Keywords: Amino acids Intramolecular charge transfer One/two-photon fluorescence Molecular-based fluorescent sensors
CLC: O625.631
Type: Master's thesis
Year: 2011
Downloads: 70
Quote: 0
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Abstract


A new triphenylamine derivative named TBA-SCM with“D-π-A”structural features is synthesized. It could bond with amine groups quickly. It is characterized by the mass spectra and 1H NMR spectra in this paper.The linear optical properties (such as UV-Vis absorption, one-photon fluorescence spectra), non-linear optical properties (two-photon fluorescence spectra) and fluorescence sensing properties of the compound acted withβ-CD, amino acids or PAMAM are investigated.1. The compound show fluorescence quenching phenomenon in different solvents and different concentrations. Besides, after enveloped,β-CD curbed TBA-SCM molecular rotation distortion greatly, the luminous intensity is improved effectively. From the polarity environment to non-polarity environment, the emission spectra of TBA-SCM are obviously different. Because it is sensitive to microenvironment, it could be used as a fluorescent probe.2. TBA-SCM could easily lose amber amide groups, bonding with amine groups quickly, forming new compounds. TBA-SCM is selectivity and sensitivity to lysine and arginine in the process of detecting human-body essential amino acids through the way of fluorescent process, showing fluorescence spectra enhancement, shift and etc. So it can be a potential fluorescent probe in the fields of biomedical research and clinical inspection application.3. High "algebra" dendrimers can be easily obtained by using TBA-SCM bonded with PAMAM surface abundant amine groups. Higher two-photon fluorescence properties are also found. With the increasing concentration of TBA-SCM, the concentration quench of one-photon fluorescence is appeared. But the intensity of two-photon fluorescence is higher and higher with the elevated concentration of TBA-SCM. This is because TBA-SCM can promote intramolecular charge transfer of TBA-PAMAM. So the intensity of two-photon upxonverted fluorescence is increased.

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Aromatic compounds > Aromatic nitrogen compounds > Aromatic amines and their derivatives > Aromatic amines
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