Computational design of a molecular triple photoswitch for wavelength-selective control. Issue 46 (26th September 2018)

• Record Type: Journal Article
• Authors: Yang, Chong; Slavov, Chavdar; Wegner, Hermann A.; Wachtveitl, Josef; Dreuw, Andreas
• Is Part Of: Chemical science. Volume 9:Issue 46(2018)
• Page Start: 8665
• Page End: 8672
• Publication Date: 2018-09-26
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8sc03379j
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : meta -Trisazobenzenes allow for wavelength-selective photo-switching of the individual azobenzene branches. Abstract : A small single molecule with multiple photoswitchable subunits, selectively and independently controllable by light of different wavelengths, is highly attractive for applications in multi-responsive materials and biological sciences. Herein, triple photoswitches are presented consisting of three independent azobenzene (AB) subunits that share a common central phenyl ring: the meta -trisazobenzenes (MTA). It is the unique meta-connectivity pattern leading to decoupling of all azo-subunits although they do overlap spatially. Based on this pattern, we design a triple MTA photoswitch, as proof-of-principle, with three different, electronically independent AB branches on the computer, which can be individually photo-excited to trigger ultra-fast E → Z isomerization at the selected AB branch.