Synthesis of double D-A branched organic dyes employing indole and phenoxazine as donors for efficient DSSCs
Synthesis of double D-A branched organic dyes employing indole and phenoxazine as donors for efficient DSSCs
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使用吲哚和吩恶嗪作为高效 DSSC 供体合成双 D-A 支化有机染料
DOI：
10.1016/j.tet.2014.03.086
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发表时间：
2014-09-09
期刊：
影响因子：
2.1
通讯作者：
Cao, Derong
中科院分区：
文献类型：
--
作者：
Hong, Yanping;Iqbal, Zafar;Cao, Derong
以吲哚和吩恶嗪单元为给体，氰基丙烯酸为电子受体，合成了4种新型的具有双给体-受体（D-A）支链的无金属有机敏化剂（SDD 1 -4）。以吲哚为给体，分别以1，4-亚苯基双（亚甲基）、1，4-丁烯和1，6-己烯为连接基团设计了染料SDD 1 -3，以吩恶嗪为核给体设计了染料SDD 4。研究了它们的物理、电化学和DSSC特性。结果表明，连杆机构的结构对电池的性能影响不大。基于SDD 4的DSSC显示出比基于SDD 1 -3的DSSC高得多的η，这表明吩恶嗪是比吲哚更好的供体。在标准全球AM 1.5太阳光条件下（100 mW cm（-2）），SDD 4染料敏化电池在鹅去氧胆酸作为共吸附剂的情况下给出最高的4.33%的eta，达到基于N719的DSSC的82%。(C)2014爱思唯尔有限公司版权所有。
Four novel metal-free organic sensitizers bearing double donor-acceptor (D-A) branches with indole and phenoxazine units as donors (SDD1-4) and cyanoacrylic acid as electron acceptor were synthesized and characterized for dye-sensitized solar cells (DSSCs). Dyes SDD1-3 were designed with indole as a donor and 1,4-phenylenebis(methylene), 1,4-butylene and 1,6-hexylene as a linker, respectively, while the dye SDD4 was designed with phenoxazine as a core donor. Their photophysical, electrochemical, and DSSCs characteristics were investigated. The results show that the architecture structure of the linkage affects the performance of the cells slightly. The DSSCs based on SDD4 shows much higher eta than the DSSCs based on SDD1-3, which indicated that phenoxazine is a better donor than indole. Under standard global AM 1.5 solar condition (100 mW cm(-2)), the SDD4 dye-sensitized cell gave the highest eta of 4.33% with chenodeoxycholic acid as a coadsorbent, reaching 82% of N719-based DSSCs. (C) 2014 Elsevier Ltd. All rights reserved.