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Front Cover: Improved Synthesis of ortho ‐Phenylene‐bridged Cyclic Tetrapyrroles and Oxidative Fusion Reactions Toward Substituted Tetraaza[8]circulenes (Chem. Asian J. 6/2021)
Author(s) -
Morimoto Yuki,
Chen Fengkun,
Matsuo Yusuke,
Kise Koki,
Tanaka Takayuki,
Osuka Atsuhiro
Publication year - 2021
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202100116
Subject(s) - cyclic voltammetry , chemistry , substituent , photochemistry , front cover , oxidative phosphorylation , heteroatom , fluorescence , redox , phenylene , spectroscopy , tetrapyrrole , combinatorial chemistry , stereochemistry , organic chemistry , ring (chemistry) , cover (algebra) , electrochemistry , electrode , mechanical engineering , biochemistry , engineering , polymer , physics , quantum mechanics , enzyme
Heteroatom‐embedded [8]circulenes have emerged as novel functionalized heteronanographenes that show various promising functions such as bright fluorescence, charge transporting, and redox reactivities. An improved synthetic method of cyclic tetrapyrrole precursors has been developed by utilizing a reverse coupling strategy, from which opposite‐type tetrasubstituted tetraaza[8]circulenes have been obtained by a fold‐in oxidative fusion reaction. The substituent effects were comprehensively studied by XRD analysis, UV/Vis and fluorescence spectroscopy, and cyclic voltammetry. More information can be found in the Full Paper by Takayuki Tanaka et al.