Bright Solid-State Emission of Disilane-Bridged Donor-Acceptor-Donor and Acceptor-Donor-Acceptor Chromophores

Masaki Shimada; Mizuho Tsuchiya; Ryota Sakamoto; Yoshinori Yamanoi; Eiji Nishibori; Kunihisa Sugimoto; Hiroshi Nishihara

doi:10.1002/anie.201509380

Bright Solid-State Emission of Disilane-Bridged Donor-Acceptor-Donor and Acceptor-Donor-Acceptor Chromophores

Angew Chem Int Ed Engl. 2016 Feb 24;55(9):3022-6. doi: 10.1002/anie.201509380. Epub 2016 Jan 28.

Authors

Masaki Shimada¹, Mizuho Tsuchiya¹, Ryota Sakamoto¹, Yoshinori Yamanoi², Eiji Nishibori³, Kunihisa Sugimoto⁴, Hiroshi Nishihara⁵

Affiliations

¹ Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
² Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan. yamanoi@chem.s.u-tokyo.ac.jp.
³ Division of Physics, Faculty of Pure and Applied Sciences, Tsukuba Research Center for Interdisciplinary Materials Science (TIMS) &, Center for Integrated Research in Fundamental Science and Engineering (CiRfSE), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8571, Japan.
⁴ Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan.
⁵ Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan. nisihara@chem.s.u-tokyo.ac.jp.

PMID: 26822564
DOI: 10.1002/anie.201509380

Abstract

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 (λem =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.

Keywords: aggregation; disilanes; fluorescence; silicon; solid-state structures.

Publication types

Research Support, Non-U.S. Gov't