Tailored Band Gaps in Sulfur‐ and Nitrogen‐Containing Porous Donor–Acceptor Polymers

Chemistry - A European Journal - Tập 23 Số 53 - Trang 13023-13027 - 2017
Dana Schwarz1, Yaroslav S. Kochergin1, Amitava Acharjya2, Arun Ichangi1,3, Maksym Opanasenko4, Jiřı́ Čejka4, Uwe Lappan5, Pál Árki6, Junjie He7, Johannes Schmidt2, Petr Nachtigall7, Arne Thomas2, Ján Tarábek3, Michael J. Bojdys1,3
1Department of Organic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
2Department of Functional Materials, Technical University Berlin, Hardenbergstr. 40, 10623 Berlin, Germany
3Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
4Heyrovsky Institute for Physical Chemistry Academy of Science Czech Republic Dolejškova 3 182 23 Prague 8 Czech Republic
5Leibniz-Institut fuer Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany
6Technical University Bergakademie Freiberg, Gustav Zeuner Str. 3, 09599 Freiberg, Germany
7Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic

Tóm tắt

AbstractDonor–acceptor dyads hold the key to tuning of electrochemical properties and enhanced mobility of charge carriers, yet their incorporation into a heterogeneous polymer network proves difficulty owing to the fundamentally different chemistry of the donor and acceptor subunits. A family of sulfur‐ and nitrogen‐containing porous polymers (SNPs) are obtained via Sonogashira–Hagihara cross‐coupling and combine electron‐withdrawing triazine (C3N3) and electron‐donating, sulfur‐containing linkers. Choice of building blocks and synthetic conditions determines the optical band gap (from 1.67 to 2.58 eV) and nanoscale ordering of these microporous materials with BET surface areas of up to 545 m2 g−1 and CO2 capacities up to 1.56 mmol g−1. Our results highlight the advantages of the modular design of SNPs, and one of the highest photocatalytic hydrogen evolution rates for a cross‐linked polymer without Pt co‐catalyst is attained (194 μmol h−1 g−1).

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Chemistry - A European Journal

Tập 23 Số 53

13023-13027

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