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Boroquinol Complexes with Fused Extended Aromatic Backbones: Synthesis and Optical Properties
Author(s) -
Elbert Sven M.,
Wagner Philippe,
Kanagasundaram Thines,
Rominger Frank,
Mastalerz Michael
Publication year - 2017
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.201604421
Subject(s) - materials science , combinatorial chemistry , chemistry
Boron‐based dyes are attractive synthetic targets due to their large variability of absorption and emission wavelengths. Through Pictet–Spengler cyclizations, followed by oxidation, π‐extended boroquinols have been synthesized. During optimization of the reaction conditions, an unusual dearylation has been found and mechanistically investigated. For two of the synthesized boroquinols, mechanochromic effects with bathochromic shifts up to 50 nm were found upon grinding.