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Cover Picture: Near‐IR Absorbing J‐Aggregate of an Amphiphilic BF 2 ‐Azadipyrromethene Dye by Kinetic Cooperative Self‐Assembly (Angew. Chem. Int. Ed. 21/2017)
Author(s) -
Chen Zhijian,
Liu Yong,
Wagner Wolfgang,
Stepanenko Vladimir,
Ren Xiangkui,
Ogi Soichiro,
Würthner Frank
Publication year - 2017
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.201703067
Subject(s) - chlorosome , aggregate (composite) , amphiphile , metastability , j aggregate , chemistry , bacteriochlorophyll , materials science , chemical engineering , crystallography , nanotechnology , molecule , organic chemistry , polymer , pigment , copolymer , engineering
A new class of biomimetic J‐aggregate based on an amphiphilic BF 2 ‐azadipyrromethene dye is reported by Z. Chen, F. Würthner, et al. in their Communication on page 5729 ff. The J‐aggregate (aggregate II) is formed via kinetically favored metastable aggregate I intermediate and characterized by a sharp and intense J‐band at 799 nm. The optical properties and the rod‐like morphology of aggregate II resemble those of the natural bacteriochlorophyll J‐aggregates found in chlorosomes of green bacteria.