Red edge effect and chromoselective photocatalysis with amorphous covalent triazine-based frameworks

Zou Y, Abednatanzi S, Derakhshandeh PG, Mazzanti S, Schüßlbauer C, Cruz D, Van Der Voort P, Shi JW, Antonietti M, Guldi DM, Savateev A (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 13

Article Number: 2171

Journal Issue: 1

DOI: 10.1038/s41467-022-29781-9

Abstract

Chromoselective photocatalysis offers an intriguing opportunity to enable a specific reaction pathway out of a potentially possible multiplicity for a given substrate by using a sensitizer that converts the energy of incident photon into the redox potential of the corresponding magnitude. Several sensitizers possessing different discrete redox potentials (high/low) upon excitation with photons of specific wavelength (short/long) have been reported. Herein, we report design of molecular structures of two-dimensional amorphous covalent triazine-based frameworks (CTFs) possessing intraband states close to the valence band with strong red edge effect (REE). REE enables generation of a continuum of excited sites characterized by their own redox potentials, with the magnitude proportional to the wavelength of incident photons. Separation of charge carriers in such materials depends strongly on the wavelength of incident light and is the primary parameter that defines efficacy of the materials in photocatalytic bromination of electron rich aromatic compounds. In dual Ni-photocatalysis, excitation of electrons from the intraband states to the conduction band of the CTF with 625 nm photons enables selective formation of C‒N cross-coupling products from arylhalides and pyrrolidine, while an undesirable dehalogenation process is completely suppressed.

Authors with CRIS profile

Christoph Schüßlbauer Lehrstuhl für Physikalische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

Fritz-Haber-Institut der Max-Planck-Gesellschaft (FHI) DE Germany (DE) Xi’an Jiaotong-Liverpool University (XJTLU) CN China (CN) Max-Planck-Institut für Kolloid- und Grenzflächenforschung / Max Planck Institute of Colloids and Interfaces DE Germany (DE) Universiteit Gent (UGent) / Ghent University BE Belgium (BE)

How to cite

APA:

Zou, Y., Abednatanzi, S., Derakhshandeh, P.G., Mazzanti, S., Schüßlbauer, C., Cruz, D.,... Savateev, A. (2022). Red edge effect and chromoselective photocatalysis with amorphous covalent triazine-based frameworks. Nature Communications, 13(1). https://doi.org/10.1038/s41467-022-29781-9

MLA:

Zou, Yajun, et al. "Red edge effect and chromoselective photocatalysis with amorphous covalent triazine-based frameworks." Nature Communications 13.1 (2022).

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