Synthesis and characterization of yellow and green light emitting novel polymers containing carbazole and electroactive moieties
Synthesis and characterization of yellow and green light emitting novel polymers containing carbazole and electroactive moieties
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DOI：
10.1016/j.electacta.2012.01.028
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发表时间：
2012-03-30
影响因子：
6.6
通讯作者：
Kaya, Ismet
中科院分区：
文献类型：
--
作者：
Aydin, Aysel;Kaya, Ismet
通过Ullmann和Suzuki偶联反应合成了1，5-双（3，6-二（噻吩-3-基）-9H-咔唑-9-基）戊烷（B1）和1，2-双（2-（3，6-二（噻吩-3-基）-9H-咔唑-9-基）乙氧基）乙烷（B2）。此外，合成了这些化合物与3，4-亚乙基二氧噻吩（EDOT）和噻吩（Th）的均聚物和共聚物，并通过电化学氧化聚合将其涂覆到ITO玻璃表面上。研究了这些化合物的光谱电化学和电致变色性能。这些聚合物的切换能力测量为在它们的最大对比度点处的百分比透射率（%T）。使用静电计通过四点探针技术测量涂覆到ITO-玻璃表面上的聚合物膜的固态电导率。通过红外光谱和核磁共振谱对化合物进行了表征，并通过热重分析测定了它们的热稳定性。使用DMSO溶液进行荧光测量，并且合成的聚合物基于激发波长的调谐发射绿色和黄色，这表明这些聚合物可用于制备具有绿色和黄色发射的新型聚合物发光二极管（PLED）。(C)2012爱思唯尔有限公司保留所有权利。
The compounds 1,5-bis(3,6-di(thiophen-3-yl)-9H-carbazol-9-yl)pentane (B1) and 1,2-bis(2-(3,6-di(thiophen-3-yl)-9H-carbazol-9-yl)ethoxy)ethane (B2) were synthesized via Ullmann and Suzuki couplings. Additionally, the homopolymers and copolymers of these compounds with 3,4-ethylenedioxythiophene (EDOT) and thiophene (Th) were synthesized and coated onto an ITO-glass surface via electrochemical oxidative polymerization. The spectroelectrochemical and electrochromic properties of these compounds were also investigated. The switching ability of these polymers was measured as the percent transmittance (%T) at their point of maximum contrast. The solid state electrical conductivities of the polymeric films coated onto the ITO-glass surface were measured via the four point probe technique using an electrometer. The compounds were characterized by FT-IR and NMR, and their thermal stabilities were determined via TG measurements. Fluorescence measurements were performed using DMSO solutions, and the synthesized polymers emitted both green and yellow colors based on the tuning of the excitation wavelength, which indicates that these polymers could be used to produce new polymeric light emitting diodes (PLEDs) with green and yellow emissions. (C) 2012 Elsevier Ltd. All rights reserved.