title: Mechanochemical synthesis of chemically stable isoreticular covalent organic frameworks.
abstract: Three thermally and chemically stable isoreticular covalent organic frameworks (COFs) were synthesized via room-temperature solvent-free mechanochemical grinding. These COFs were successfully compared with their solvothermally synthesized counterparts in all aspects. These solvent-free mechanochemically synthesized COFs have moderate crystallinity with remarkable stability in boiling water, acid (9 N HCl), and base [TpBD (MC) in 3 N NaOH and TpPa-2 (MC) in 9 N NaOH]. Exfoliation of COF layers was simultaneously observed with COF formation during mechanochemical synthesis. The structures thus obtained seemed to have a graphene-like layered morphology (exfoliated layers), unlike the parent COFs synthesized solvothermally.
authors.affiliation: Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.
authors.forename: Bishnu P
authors.initials: BP
authors.lastname: Biswal
authors.forename: Suman
authors.initials: S
authors.lastname: Chandra
authors.forename: Sharath
authors.initials: S
authors.lastname: Kandambeth
authors.forename: Binit
authors.initials: B
authors.lastname: Lukose
authors.forename: Thomas
authors.initials: T
authors.lastname: Heine
authors.forename: Rahul
authors.initials: R
authors.lastname: Banerjee