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Chemically Delaminated Free‐Standing Ultrathin Covalent Organic Nanosheets
Author(s) -
Khayum M. Abdul,
Kandambeth Sharath,
Mitra Shouvik,
Nair Sanoop B.,
Das Anuja,
Nagane Samadhan S.,
Mukherjee Rabibrata,
Banerjee Rahul
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201607812
Subject(s) - exfoliation joint , covalent organic framework , covalent bond , nanotechnology , materials science , thin film , layer (electronics) , fabrication , nanostructure , layer by layer , chemical engineering , chemistry , organic chemistry , graphene , medicine , alternative medicine , pathology , engineering
Covalent organic nanosheets (CONs) are a new class of porous thin two‐dimensional (2D) nanostructures that can be easily designed and functionalized and could be useful for separation applications. Poor dispersion, layer restacking, and difficult postsynthetic modifications are the major hurdles that need to be overcome to fabricate scalable CON thin films. Herein, we present a unique approach for the chemical exfoliation of an anthracene‐based covalent organic framework (COF) to N ‐hexylmaleimide‐functionalized CONs, to yield centimeter‐sized free‐standing thin films through layer‐by‐layer CON assembly at the air–water interface. The thin‐layer fabrication technique presented here is simple, scalable, and does not require any surfactants or stabilizing agents.