Preparation and Characterization of Regioisomerically Pure 1,7-Disubstituted Perylene Bisimide Dyes
摘要:
A detailed study on bromination and subsequent imidization of perylene bisanhydride with cyclohexylamine is reported. The present results reveal that previously reported 1,7-difunctionalized perylenE! bisimides are presumably contaminated with the respective 1,6 regioisomers. N,N'-Dicyclohexyl- 1,7-dibromoperylene bisimide 1, 7-3 is obtained for the first time in isomerically pure form, and its structure is unequivocally confirmed by X-ray analysis. By using regioisomerically pure l,'7-dibromoperylene bisimide 1,7-3, 1,7-dipyrrolidinylperylene bisimides 4a-c and 1,7-dipyrrolidinylperylene bisanhydride 5 as well as the unsymmetrically difunctionalized 1-bromo7-pyrrolidinyl- and 1-cyano-7-pyrrolidinylperylene bisimides 7 and 8 are synthesized in good yield.
Preparation and Characterization of Regioisomerically Pure 1,7-Disubstituted Perylene Bisimide Dyes
摘要:
A detailed study on bromination and subsequent imidization of perylene bisanhydride with cyclohexylamine is reported. The present results reveal that previously reported 1,7-difunctionalized perylenE! bisimides are presumably contaminated with the respective 1,6 regioisomers. N,N'-Dicyclohexyl- 1,7-dibromoperylene bisimide 1, 7-3 is obtained for the first time in isomerically pure form, and its structure is unequivocally confirmed by X-ray analysis. By using regioisomerically pure l,'7-dibromoperylene bisimide 1,7-3, 1,7-dipyrrolidinylperylene bisimides 4a-c and 1,7-dipyrrolidinylperylene bisanhydride 5 as well as the unsymmetrically difunctionalized 1-bromo7-pyrrolidinyl- and 1-cyano-7-pyrrolidinylperylene bisimides 7 and 8 are synthesized in good yield.
3,4:9,10-Perylenebis(dicarboximide) chromophores that function as both electron donors and acceptors
作者:Yongyu Zhao、Michael R. Wasielewski
DOI:10.1016/s0040-4039(99)01468-9
日期:1999.9
Five green 3,4:9,10-perylenebis(dicarboximide) dyes that both donate and accept electrons have been synthesized under mild conditions in high yields. These chromophores undergo reversible one-electron oxidation and reduction in butyronitrile at modest potentials. (C) 1999 Elsevier Science Ltd. All rights reserved.