title: Bimodal Functionality in a Porous Covalent Triazine Framework by Rational Integration of an Electron-Rich and -Deficient Pore Surface.
abstract: A porous covalent triazine framework (CTF) consisting of both an electron-deficient central triazine core and electron-rich aromatic building blocks is reported. Taking advantage of the dual nature of the pore surface, bimodal functionality has been achieved. The electron deficiency in the central core has been utilized to address one of the pertinent problems in chemical industries, namely separation of benzene from its cyclic saturated congener, that is, cyclohexane. Also, by virtue of the electron-rich aromatic rings with Lewis basic sites, aqueous-phase chemical sensing of a nitroaromatic compound of highly explosive nature (2,4,6-trinitrophenol; TNP) has been achieved. The present compound supersedes the performance of previously reported COFs in both the aspects. Notably, this reports the first example of pore-surface engineering leading to bimodal functionality in CTFs.
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors.forename: Avishek
authors.initials: A
authors.lastname: Karmakar
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors.forename: Amrit
authors.initials: A
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors.forename: Abhijeet K
authors.initials: AK
authors.lastname: Chaudhari
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors.forename: Partha
authors.initials: P
authors.lastname: Samanta
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors.forename: Aamod V
authors.initials: AV
authors.lastname: Desai
authors.affiliation: University of Amsterdam, the Netherlands.
authors.forename: Rajamani
authors.initials: R
authors.lastname: Krishna
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India. sghosh@iiserpune.ac.in.
authors.forename: Sujit K
authors.identifier: http://orcid.org/0000-0002-1672-4009
authors.initials: SK
authors.lastname: Ghosh
keywords: bimodal functionality; covalent organic frameworks; sensing; separation; triazine