Benzodipyrrole-based Donor-Acceptor-type Boron Complexes as Tunable Near-infrared-Absorbing Materials

Tomoya Nakamura; Shunsuke Furukawa; Eiichi Nakamura

doi:10.1002/asia.201600673

Benzodipyrrole-based Donor-Acceptor-type Boron Complexes as Tunable Near-infrared-Absorbing Materials

Chem Asian J. 2016 Jul 20;11(14):2016-20. doi: 10.1002/asia.201600673. Epub 2016 Jul 5.

Authors

Tomoya Nakamura¹, Shunsuke Furukawa^{1

2}, Eiichi Nakamura³

Affiliations

¹ Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
² Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama-city, Saitama, 338-8570, Japan.
³ Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan. nakamura@chem.s.u-tokyo.ac.jp.

PMID: 27311060
DOI: 10.1002/asia.201600673

Abstract

Benzodipyrrole-based donor-acceptor boron complexes were designed and synthesized as near-infrared-absorbing materials. The electron-rich organic framework combined with the Lewis acidic boron co-ordination enabled us to tune the LUMO energy level and the HOMO-LUMO gap (i.e.,the absorption wavelength) by changing the organic acceptor units, the number of boron atoms, and the substituents on the boron atoms.

Keywords: boron; donor-acceptor systems; energy level tuning; heterocycles; near-infrared absorption.