Redox-switchable squaraines with extended conjugation

被引：33
作者：
Buschel, M
Ajayaghosh, A
Arunkumar, E
Daub, J
机构：
[1] Univ Regensburg, Inst Organ Chem, D-93040 Regensburg, Germany
[2] CSIR, Reg Res Lab, Photosci & Photon Div, Trivandrum 695019, Kerala, India
来源：
ORGANIC LETTERS | 2003年 / 5卷 / 17期
关键词：
D O I：
10.1021/ol034841x
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
graphics The redox chemistry of pi-extended squaraines is investigated using cyclic voltammetry, in-situ spectroelectrochemistry and quantum chemical calculations. Squaraine 1 is reversibly oxidized to the radical cation and dication whereas reduction shows limited electrochemical but fully chemical reversibility. The radical cation of 1 reveals absorption bands at 1000 nm and a "two-band feature" at 1600 nm. Their implications on the intramolecular electron transfer are discussed.
引用
收藏
页码：2975 / 2978
页数：4
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