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Directly 2,12‐ and 2,8‐Linked Zn II Porphyrin Oligomers: Synthesis, Optical Properties, and Coherence Lengths
Author(s) -
Jiang HuaWei,
Kim Taeyeon,
Tanaka Takayuki,
Kim Dongho,
Osuka Atsuhiro
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201504039
Subject(s) - porphyrin , coherence (philosophical gambling strategy) , chemistry , zinc , coherence length , photochemistry , materials science , crystallography , physics , organic chemistry , quantum mechanics , superconductivity
Directly 2,12‐ and 2,8‐linked Zn II porphyrin oligomers were prepared from 2,12‐ and 2,8‐diborylated Zn II porphyrin by a cross platinum‐induced coupling with a 2‐borylated Zn II porphyrin end unit followed by a triphenylphosphine (PPh 3 )‐mediated reductive elimination. Comparative studies on the steady‐state absorption and fluorescence spectra and the fluorescence lifetimes led to a conclusion that the exciton in the S 1 state is delocalized over approximately four and two Zn II porphyrin units for 2,12‐ and 2,8‐linked Zn II porphyrin arrays, respectively.