title: Cyclo[6]aramide-Tropylium Charge Transfer Complex as a Colorimetric Chemosensor for Differentiation of Intimate and Loose Ion Pairs.
abstract: Shape-persistent iso-C16-cyclo[6]aramide (1) was found to form a charge-transfer (CT) complex with aromatic carbonium tropylium (Tr(+)). The resulting CT complex was evidenced by both experimental results and theoretical calculations. Particularly, dibutylammonium salt with PF6(-) as the counterion can extrude Tr(+) from the CT complex, but it cannot do so with Cl(-), thereby offering a visual approach to identify organic intimate ion pairs and loose ion pairs.
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Peng
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Shuo
authors.initials: S
authors.lastname: Liu
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Li
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Rongzhou
authors.initials: R
authors.lastname: Chen
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Ren
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Feng
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Key State Laboratory of Biotherapy, Sichuan University , Chengdu 610064, China.
authors.forename: Lihua
authors.initials: L
authors.lastname: Yuan