title: Photocontrolled Reversible Conversion of Nanotube and Nanoparticle Mediated by β-Cyclodextrin Dimers.
abstract: A photochemically interconvertible supramolecular nanotube-nanoparticle system was constructed through secondary assembling of self-aggregates of amphiphilic porphyrin derivatives mediated by trans- and cis-azobenzene-bridged bis(permethyl-β-cyclodextrin). Significantly, these nanotubes and nanoparticles were able to interconvert upon irradiation at different wavelengths, and this photocontrolled morphological conversion is reversible and recyclable for tens of times, which will provide a feasible and convenient way to construct the ordered nanostructure with various morphologies that can be smartly controlled by the environmentally benign external stimulus.
authors.affiliation: Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071 (P.R. China).
authors.forename: He-Lue
authors.initials: HL
authors.lastname: Sun
authors.affiliation: Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071 (P.R. China).|Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071 (P.R. China).
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071 (P.R. China).
authors.forename: Jin
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071 (P.R. China). yuliu@nankai.edu.cn.|Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071 (P.R. China). yuliu@nankai.edu.cn.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
mesh_terms: D001391:Azo Compounds / Q000737:chemistry; D002942:Circular Dichroism; D019281:Dimerization; D007536:Isomerism; D008027:Light; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D043942:Nanotubes / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D047392:beta-Cyclodextrins; C009850:azobenzene; C031215:betadex
keywords: conversion; photochemistry; photocontrol; self-assembly; supramolecular chemistry