文献类型：期刊文献

英文题名：Modulation of the structures and properties of bidipyrrin zinc complexes by introducing terminal α-methoxy groups

作者：Kong, Jiahui[1,2];Li, Qizhao[1,2];Li, Minzhi[3];Li, Xin[4];Liang, Xu[3];Zhu, Weihua[3];Agren, Hans[4];Xie, Yongshu[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China;[4]KTH Royal Inst Technol, Sch Biotechnol, Dept Theoret Chem & Biol, Stockholm, Sweden

年份：2017

卷号：137

起止页码：430

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20165003121038);WOS:【SCI-EXPANDED(收录号:WOS:000390182700050)】；

基金：This work was financially supported by NSFC (21472047, 91227201), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and the Fundamental Research Funds for the Central Universities (WK1616004).

语种：英文

外文关键词：Bidipyrrins; alpha-Alkoxy bidipyrrins; Helical complexes; Conformations

摘要：A bidipyrrin nickel complex was synthesized in a high yield by oxidatively coupling between the ligands in the corresponding 2:1 (L:M) type of dipyrrin nickel complex, and further demetallation afforded the free bidipyrrin ligand. Interestingly, when treating the bidipyrrin nickel complex or the free bidipyrrin with FeCl3 in CH2Cl2/MeOH, the symmetric di-alpha-methoxy bidipyrrin could be synthesized in a high yield, with two methoxy groups attached to the terminal pyrrolic alpha-positions. Moreover, the coordination of the unsubstituted and disubstituted bidipyrrins with Zn(OAc)(2),2H(2)O afforded two similar M2L2 type of bidipyrrin helical complexes with different ligand conformations and different Zn center dot center dot center dot Zn distances of 5.353 and 3.357 angstrom, respectively. The difference in the conformations may be related to the electrostatic repulsions between the methoxy substituents. These results indicate that the dyes based on helical bidipyrrin zinc complexes with tunable structures and photophysical properties may be developed simply by modulating the terminal alpha-substituents. (C) 2016 Elsevier Ltd. All rights reserved.