Synthesis and electronic properties of nanometer-size symmetrical tetrakis(poly-p-phenylene)ethylenes

被引：18

作者：

Vyas, Vijay S. ^{[1
]}

Banerjee, Moloy ^{[1
]}

Rathore, Rajendra ^{[1
]}

机构：

[1] Marquette Univ, Dept Chem, Milwaukee, WI 53233 USA

来源：

TETRAHEDRON LETTERS | 2009年 / 50卷 / 45期

基金：

美国国家科学基金会;

关键词：

POLY-P-PHENYLENE; CONJUGATED OLIGOMERS; TETRAPHENYLETHYLENES; TRANSITIONS;

D O I：

10.1016/j.tetlet.2009.08.077

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A simple synthesis of soluble tetra kis(poly-p-phenylene)ethylenes (TPEs),where poly-p-phenylene units contain up to 4 phenylene moieties, is accomplished using an easily available tetrakis(4-bromophenyl)ethylene and phenyl, biphenyl, and p-terphenylboronic acids, containing solubilizing iso-alkyl groups as the end-capping substituents. Electrochemical oxidation of TPEs (i.e., T1-T4) showed that they undergo reversible electrochemical oxidations and form stable cation-radical salts in solution. The evaluation of absorption and emissions characteristics of T1-T4 in solution indicated that unlike parent tetratolylethylene (T1), the higher homologues (i.e., T2-T4) show emission centered at 520 nm and the quantum efficiency of emission increases with the increasing number of phenylene moieties in poly-p-phenylene units in various TPEs. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：6159 / 6162

页数：4

共 25 条

[1] CRYSTAL-STRUCTURES, PHASE-TRANSITIONS AND ENERGY CALCULATIONS OF POLY(P-PHENYLENE) OLIGOMERS [J].