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Synthesis of Direct β‐to‐β Linked Porphyrin Arrays with Large Electronic Interactions: Branched and Cyclic Oligomers
Author(s) -
Cai Hao,
Fujimoto Keisuke,
Lim Jong Min,
Wang Chaojie,
Huang Weiming,
Rao Yutao,
Zhang Senmiao,
Shi Hui,
Yin Bangshao,
Chen Bo,
Ma Ming,
Song Jianxin,
Kim Dongho,
Osuka Atsuhiro
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201407032
Subject(s) - porphyrin , trimer , pentamer , chemistry , photochemistry , crystallography , materials science , dimer , organic chemistry , biochemistry
Direct β‐to‐β linked branched and cyclic porphyrin trimers and pentamers have been synthesized by the Suzuki–Miyaura coupling of β‐borylporphyrins and β‐bromoporphyrins. The cyclic porphyrin trimer, the smallest directly linked cyclic porphyrin wheel to date, and its twined pentamer, exhibit small electrochemical HOMO–LUMO gaps, broad nonsplit Soret bands, and red‐shifted Q‐bands, thus indicating large electronic interactions between the constituent porphyrin units.