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Perylene diimide organic electro-active materials Preparation and Properties

Author: XuShuangPing
Tutor: SunZuo
School: Qingdao University
Course: Materials Processing Engineering
Keywords: Supramolecular Self-assembly Spend two imide Gather Protonated
CLC: TB34
Type: Master's thesis
Year: 2010
Downloads: 118
Quote: 1
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Abstract


Perylene diimide derivative has excellent thermal and photochemical stability, can be seen in the infrared region have a strong absorption. With electron donor - acceptor structure of the organic optoelectronic materials and devices in light-emitting diodes, field effect transistors, photovoltaic cells and organic laser has broad application prospects. This synthesized perylene diimide amphiphilic molecule, respectively, in flower diimide with amine N-bits long chain (2 - ethyl hexyl amine), which greatly enhances the introduction of molecules in the organic solvent solubility, while the bay-position introduces the pyridine functional group, the electron-rich groups introduced balance of the whole molecule electron cloud system, while pyridine nitrogen atom lone pair of electrons in the course of the experiment by the acid protonated , resulting in different electronic states structure of the molecule, achieved in different concentrations of methanol, under different degree of protonation of the congregation. By kinetic dissociation bay-substituted pyridine chloride process can be regulated to achieve a PDI supramolecular self-assembly, and through a series of spectral characteristics of bay-bit protonated pyridine functional groups before and after features. Based on the PDI structure modification, and through the solvent effect, protonated perylene diimide compounds and other control properties of different morphologies obtained PDI supramolecular aggregates by scanning transmission electron microscopy, confocal fluorescence microscopy on aggregate characterization. The same time through UV-visible absorption spectra and fluorescence spectra of molecular aggregation of different spectral characteristics under study, seek spectral characteristics of the relationship between morphology and molecular, theoretically explains the different ways under the conditions of molecular aggregates. In addition, synthesized and 5,5 - dimethyl 2,2 - bipyridine derivatives, by introducing a double bond and a benzene ring, to obtain a molecule having a large π bond and through bipyridyl lone pair electrons on the N atom with various transition metal atom effect, get a different organometallic complexes and the organometallic complexes were characterized, and Photophysical Properties. More importantly, through the complex in methylene chloride solution of the fluorescence emission spectra of the complexes found in the blue, green, red region has a three-color light-emitting phenomenon, while in confocal fluorescence microscopy experiments in order to stimulate their solid mercury complexes obtained three-color light-emitting laser confocal fluorescence microscopy images, which is consistent with the fluorescence emission spectra.

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CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Functional Materials
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