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Inside Cover: Regioregular Synthesis of Azaborine Oligomers and a Polymer with a syn Conformation Stabilized by NH⋅⋅⋅π Interactions (Angew. Chem. Int. Ed. 38/2015)
Author(s) -
Baggett Andrew W.,
Guo Fang,
Li Bo,
Liu ShihYuan,
Jäkle Frieder
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201507513
Subject(s) - bathochromic shift , dimer , polymer , crystallography , cover (algebra) , chemistry , absorption (acoustics) , crystal structure , stereochemistry , polymer chemistry , materials science , organic chemistry , physics , optics , mechanical engineering , composite material , fluorescence , engineering
Regioregular 1,2‐azaborine oligomers and a polymer were synthesized by F. Jäkle, S.‐Y. Liu et al. As described in their Communication on page 11191 ff., these materials exhibit bathochromic shifts of their absorption and emission maxima with increasing chain length that are consistent with a long effective conjugation length. An X‐ray crystal structure of the dimer and computational studies reveal an NH⋅⋅⋅π interaction between neighboring 1,2‐azaborine units as a conformation‐defining element that favors a coplanar arrangement.