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Bright Solid‐State Emission of Disilane‐Bridged Donor–Acceptor–Donor and Acceptor–Donor–Acceptor Chromophores
Author(s) -
Shimada Masaki,
Tsuchiya Mizuho,
Sakamoto Ryota,
Yamanoi Yoshinori,
Nishibori Eiji,
Sugimoto Kunihisa,
Nishihara Hiroshi
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201509380
Subject(s) - disilane , acceptor , chemistry , photochemistry , solid state , intermolecular force , chromophore , crystallography , single crystal , crystal (programming language) , silicon , molecule , organic chemistry , physics , computer science , programming language , condensed matter physics
The development of disilane‐bridged donor–acceptor–donor (D‐Si‐Si‐A‐Si‐Si‐D) and acceptor–donor–acceptor (A‐Si‐Si‐D‐Si‐Si‐A) compounds is described. Both types of compound showed strong emission ( λ em =ca. 500 and ca. 400 nm, respectively) in the solid state with high quantum yields ( Φ : up to 0.85). Compound 4 exhibited aggregation‐induced emission enhancement in solution. X‐ray diffraction revealed that the crystal structures of 2 , 4 , and 12 had no intermolecular π–π interactions to suppress the nonradiative transition in the solid state.