Blue to light gray electrochromic polymers from dodecyl-derivatized thiophene <i>Bis-</i>
substituted dibenzothiophene/dibenzofuran
作者:Kaiwen Lin、Yao Zhao、Shouli Ming、Hongtao Liu、Shijie Zhen、Jingkun Xu、Baoyang Lu
DOI:10.1002/pola.27973
日期:2016.6.1
fluorescence quantum yields ranging from 0.16 to 0.21. The corresponding electroactive polymers poly(2,8‐bis‐(4‐dodecyl‐thiophen‐2‐yl)‐dibenzothiophene) (PDBT‐3DTh) and poly(2,8‐bis‐(4‐dodecyl‐thiophen‐2‐yl)‐dibenzofuran) (PDBF‐3DTh) were obtained by electropolymerization method and displayed good electrochemical stability. Both polymers switched between light gray in the neutral state and blue in the
3-十二烷基噻吩封端的两个单体:2,8-双(4-十二烷基噻吩-2-基)-二苯并噻吩(DBT-3DTh)和2,8-双(4-十二烷基噻吩-2-基) )-二苯并呋喃(DBF-3DTh)是通过Stille偶联反应合成的。两种单体均在约400nm处显示发射峰,且荧光量子产率为0.16至0.21。相应的电活性聚合物聚(2,8-双-(4-十二烷基-噻吩-2-基)-二苯并噻吩)(PDBT-3DTh)和聚(2,8-双-(4-十二烷基-噻吩-2-基)-二苯并呋喃)(PDBF-3DTh)是通过电聚合方法制得的,具有良好的电化学稳定性。两种聚合物在中性态的浅灰色和氧化态的蓝色之间切换。动力学研究表明,PDBT-3DTh在575 nm处的最大光学对比度(ΔT%)为25.23%,着色效率(CE)为196 cm 2 C -1。但是,PDBF-3DTh的电致变色性能不如PDBT-3DTh。对EDOT和3-烷基噻吩封端的DBT