title: Ultrasound-assisted construction of halogen-bonded nanosized cocrystals that exhibit thermosensitive luminescence.
abstract: Multi-component organic nanocrystals that are comprised of two or more supramolecular building blocks can be used to extend the design and assembly scope of solid molecular materials. Herein, we report the use of ultrasonication to prepare halogen-bonded stilbene-based nano-cocrystals that exhibit different photoemission properties, including one- and two-phonon emission and fluorescence lifetimes, relative to those of macrodimensional crystals. The structural transformation from nano-cocrystals into nanocrystals upon heating results in a luminescence red-shift from greenish blue to yellow. The temperature-dependent ratiometric luminescence may allow such nano-cocrystals to be used as fluorescent sensors and thermosensitive materials.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P. Box 98, 100029, Beijing, PR China. yandp@mail.buct.edu.cn
authors.forename: Dongpeng
authors.initials: D
authors.lastname: Yan
authors.forename: Dejan-Krešimir
authors.initials: DK
authors.lastname: Bučar
authors.forename: Amit
authors.initials: A
authors.lastname: Delori
authors.forename: Bhavnita
authors.initials: B
authors.lastname: Patel
authors.forename: Gareth O
authors.initials: GO
authors.lastname: Lloyd
authors.forename: William
authors.initials: W
authors.lastname: Jones
authors.forename: Xue
authors.initials: X
authors.lastname: Duan
mesh_terms: D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D008958:Models, Molecular; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D055668:Photochemical Processes; D013696:Temperature