title: Formation of charge-transfer complexes based on a tropylium cation and 2,6-helic[6]arenes: a visible redox stimulus-responsive process.
abstract: Charge-transfer (CT) complexes formed from 2,6-helic[6]arene hosts and a tropylium cation are described in detail. In particular, it was found that the binding and release processes of the guest in the complexes could be efficiently controlled by a redox stimulus, and the responsive process could be visually observed by the color change of the solution. To our knowledge, this represents the first visible redox stimulus-responsive host-guest system formed from the tropylium cation.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. cchen@iccas.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Geng-Wu
authors.initials: GW
authors.lastname: Zhang
authors.affiliation: Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. cchen@iccas.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Shi
authors.affiliation: Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. cchen@iccas.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Chuan-Feng
authors.identifier: http://orcid.org/0000-0001-5766-9264
authors.initials: CF
authors.lastname: Chen