Theoretical study of the alkoxyls groups effect on PPV-ether excited states, a relationship with femtosecond decay

被引：24

作者：

Mbarek, M. ^{[1
]}

Zaidi, B. ^{[1
]}

Alimi, K. ^{[1
]}

机构：

[1] Univ Monastir, Unite Rech Mat Nouveaux & Dispositifs Elect Organ, Fac Sci Monastir, Monastir 5000, Tunisia

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2012年 / 88卷

关键词：

Excited states; Substituent; Photoluminescence; Exciton; Lifetime; DFT; RHENIUM(I) BIPYRIDINE COMPLEXES; LIGHT-EMITTING-DIODES; OPTICAL-PROPERTIES; ELECTRONIC-PROPERTIES; CONJUGATED POLYMERS; ENERGY MIGRATION; SOLAR-CELLS; THIN-FILMS; COPOLYMERS; INTERCHAIN;

D O I：

10.1016/j.saa.2011.11.042

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Based on Density Functional Theory (DFT), the effect of alkoxyl substituents groups on the excited states of new PPV derivative (PPV-ether) are studied. Thus differences on the relaxation energy, the atomic charge distribution and the conjugation length at their excited state are interpreted on the pathways of the nature on the emissive species. Photoluminescence and optical spectra of the corresponding modeling structures are carried out. Furthermore, the life time at the excited state are emphasized either theoretically from oscillator strength or experimentally from time resolved photoluminescence. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：23 / 30

页数：8

共 45 条

[1] Synthesis and characterization of C1-4poly-phenylene-vinylene-ether photoluminescent copolymers [J].