Structure-Property Relationships in Conjugated Donor-Acceptor Molecules Based on Cyanoanthracene
Date Issued
2005
Date
2005
Author(s)
Lin, Jui-Hsien
DOI
zh-TW
Abstract
Two series of π-conjugated bipolar compounds namely 9-phenyl-10-anthronitriles (PANs) and 9-phenylethynyl-10-anthronitriles (PEANs) having inherent redox centers have been synthesized and their UV-Vis absorption, fluorescence emission and electrochemical behavior are studied. Electrochemiluminescence of these molecules bearing weak, strong and spin polarized donors is also studied. The observed electronic properties are explained by means of Density Functional Theory (DFT- B3LYP/6-31G*) calculations. The structure-property relationships of all the molecules are discussed.
In this study, we checked absorption and emission spectra in various solvents by the UV-Vis and fluorescence spectrometer respectively. Quantum yield (Φ) and other photophysical properties were also studied by the data. We used Cyclic Voltammetry ( CV ) to determine the electrochemical activities of all compounds. And then we checked ECL properties by triple-potential step.(fluorescence spectrometer as detector.)
In conclusion, PAN、AnAN、DMA-PAN and DMA-PEAN with energy sufficient to populate singlet state, thus they followed S-route emission. DTP-PAN、An2N-PAN、PEAN、AnEAN and DTP-PEAN show ECL emission red-shifted and energy deficient, thus they followed E-route emission. An2N-PEAN is no ECL emission.
Subjects
電致化學發光
腈蔥
ECL
cyanoanthracene
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-94-R92223073-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):109ff33c9a7bdb099d1eb0277c29d666