title: Near-infrared photoswitching of cyclodextrin-guest complexes using lanthanide-doped LiYF4upconversion nanoparticles.
abstract: This communication reports a new type of supramolecular cyclodextrin-guest complexes using cyclodextrin coated upconversion nanoparticles as hosts and monovalent and divalent azobenzenes and arylazopyrazoles as guests. A potentially biocompatible photocontrol of the interaction by isomerization of the azobenzene or arylazopyrazole was achieved by laser irradiation at 980 nm and a very low light intensity of 0.22 W cm-2.
authors.affiliation: Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany. b.j.ravoo@uni-muenster.de.
authors.forename: Nadja
authors.initials: N
authors.lastname: Möller
authors.affiliation: Institute of Applied Physics, Westfälische Wilhelms-Universität Münster, Corrensstrasse 2, 48149 Münster, Germany. fallnich@uni-muenster.de.
authors.forename: Tim
authors.initials: T
authors.lastname: Hellwig
authors.affiliation: Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany. b.j.ravoo@uni-muenster.de.
authors.forename: Lucas
authors.initials: L
authors.lastname: Stricker
authors.affiliation: Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany. b.j.ravoo@uni-muenster.de.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Engel
authors.affiliation: Institute of Applied Physics, Westfälische Wilhelms-Universität Münster, Corrensstrasse 2, 48149 Münster, Germany. fallnich@uni-muenster.de.
authors.forename: Carsten
authors.initials: C
authors.lastname: Fallnich
authors.affiliation: Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany. b.j.ravoo@uni-muenster.de.
authors.forename: Bart Jan
authors.initials: BJ
authors.lastname: Ravoo
mesh_terms: D001391:Azo Compounds / Q000737:chemistry; D003505:Cyclodextrins / Q000737:chemistry*; D005459:Fluorides / Q000737:chemistry*; D007259:Infrared Rays; D007536:Isomerism; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008027:Light; D008958:Models, Molecular; D008968:Molecular Conformation; D053758:Nanoparticles / Q000737:chemistry*; D011720:Pyrazoles / Q000737:chemistry; D015019:Yttrium / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D003505:Cyclodextrins; D028581:Lanthanoid Series Elements; D011720:Pyrazoles; D015019:Yttrium; C009850:azobenzene; D005459:Fluorides