Synthesis and evaluation of indoline dyes for zinc oxide dye-sensitized solar cell

对双吲哚类染料的分子设计、合成和评价进行了研究，得到了如下信息(1)至(4)：(1)染料的氧化电位应比约0。3 V与FC/FC^(比-5更稳定。(2)环戊烷、对苯基和苯基团之一会削弱D149乙酯的π-π堆积。(3)在N-(2-烷氧基苯基)吲哚染料中引入长烷基后，染料的可燃性和挥发性有机碳都得到改善。(4)以对苯基取代的双罗丹宁受体作为共吸附剂的吲哚类染料的性能最好。

Molecular design, synthesis and evalutaion of double indoline dyes were examined and obtained the information(1) to(4):(1) The oxidation potential of dyes should be more positive than ca. 0. 3 V vs Fc/Fc^+(more stable than-5. 05 eV by DFT calculations).(2) The Cyclopentane, p-phenylene, and one of the phenyl moieties could weakenπ-πstacking of D149 ethyl ester.(3) When long alkyl group is introduced in N-(2-alkoxyphenyl) indoline dyes, both Jsc and Voc were improved.(4) A novel indoline dye, in which a double rhodanine acceptor is attached by way of p-phenylene spacer, showed the best performance when lithocholic acid was used as a co-adsorbate.