两种芴类敏化染料的合成及光电性能研究  

Synthesis and Photoelectric Properties Research of Two Fluorene Sensitized Dyes

作　　者：魏猛[1] 祁世波[1] 周永柱[2] 张纪梅[1] 

机构地区：[1]天津工业大学环化学院,天津300387 [2]天津大学化工学院,天津300100

出　　处：《精细化工》2016年第1期78-81,共4页Fine Chemicals

基　　金：国家自然科学基金(21106101;21076147)~~

摘　　要：将噻吩和呋喃通过缩合反应分别连接到芴的9位,再通过Vilsemier反应,对芴上噻吩或呋喃的2位进行甲酰化,最后与腈乙酸进行Knoevenagel反应,连接上锚定基团,得到两种以芴作为供电基团,以噻吩或呋喃作为π桥的染料F-S和F-O。所有的产物及中间产物均进行了~1HNMR验证。测试两种染料的光学性能后发现,虽然两种染料在结构上仅仅是一个原子之差,但是染料F-O的紫外-可见吸收光谱的最大吸收波长相对于染料F-S红移了20 nm。随后组装成电池测试其光电转换性能,结果发现染料F-O的光电转换效率（η）达到了2.76%,而染料F-S的光电转换效率仅仅为1.98%。这说明：引入合适的π桥能够大大地提高芴类染料的光电性能。Thiophene and furan at the 9th position of the fluorene were prepared through condensation reaction as the starting materials respectively,then the reaction of formylation on 2th position of thiophene（ furan） and Knoevenagel condensation with acrylic acid were processed to get two simple structures dyes F-S and F-O. The fluorene was used as the electron donor,while the thiophene（ furan）were used as the π bridge. All the intermediates and target dyes were characterized by ~1HNMR. The results showed that the maximum absorption wavelength of dye F-O showed a red-shift about 20 nm compared to F-S,only due to a single atom changed. The photoelectric conversion efficiency（ PCE） of FO was 2. 76%,while F-S was just 1. 98% after the batteries were tested. It is showed that the introduction of suitable π bridge structure could greatly improve photovoltaic properties of fluorene dyes.

关 键 词：噻吩 呋喃 染料 π桥 光电转换效率 有机电化学与工业 

分 类 号：O621[理学—有机化学]