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Title: Manipulation of Amorphous-to-Crystalline Transformation: Towards the Construction of Covalent Organic Framework Hybrid Microspheres with NIR Photothermal Conversion Ability
Authors: Jing Tan
Supawadee Namuangruk
Weifu Kong
Nawee Kungwan
Jia Guo
Changchun Wang
Keywords: Chemical Engineering
Issue Date: 1-Jan-2016
Abstract: © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim An approach to transforming amorphous organic networks into crystalline covalent organic frameworks (COFs) with retention of the colloidal nanosize and uniform morphology is presented. Specifically, Fe3O4nanoclusters are encapsulated by a disordering polyimine network via the Schiff-base reaction. The formed imine bonds could be reconstructed under thermodynamic control to reform the polyimine networks into imine-linked COFs in situ. Such a core–shell microsphere exhibits the uniform size and spherical shape, controllable COF shell thickness, accessible surface modification, and improved solution dispersibility as well as maintenance of high surface area, periodic micropores, and superior magnetic responsiveness. Additionally, the photothermal conversion effect is demonstrated for the first time on the nanoCOF layers upon exposure to near infrared light, providing convincing evidence for potential use in phototherapy.
ISSN: 15213773
Appears in Collections:CMUL: Journal Articles

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