The New Branched Multielectrochromic Materials: Enhancing the Electrochromic Performance via Longer Side Alkyl Chain
作者:Fatma Baycan Koyuncu、Emre Sefer、Sermet Koyuncu、Eyup Ozdemir
DOI:10.1021/ma2013833
日期:2011.11.8
containing carbazole core, 2,5-di(2-thienyl)-1H-pyrrole, differentiated by the length of side alkyl chains (DSNSC-1 and DSNSC-2). Structural identification of initial compounds and products were carried out by using FT-IR and 1H and 13C NMR spectroscopy. The electroactive materials DSNSC-1 and DSNSC-2 were directly coated on to ITO glass surface by using electrochemical polymerization process. The results
我们描述了两种含咔唑核,2,5-二(2-噻吩基)-1 H-吡咯的支化电活性单体的合成及其与结构-性质的关系,区别在于烷基侧链的长度(DSNSC-1和DSNSC-2 )。通过使用FT-IR以及1 H和13 C NMR光谱对初始化合物和产物进行结构鉴定。通过电化学聚合法将电活性材料DSNSC-1和DSNSC-2直接涂覆在ITO玻璃表面上。结果清楚地表明,烷基侧链的长度对这些聚合物的光学和电化学性质有重大影响。具有较长烷基侧链的Poly-DSNC-2表现出较高的对比度(ΔT%= 850 nm时为68%),响应时间约为0.8 s,着色效率高(352 cm 2 C –1),即使经过5000次循环,其性能仍可保持97.1%。