Journal article Open Access

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

Schwarz, Dana; Kochergin, Yaroslav S.; Acharjya, Amitava; Ichangi, Arun; Opanasenko, Maksym V.; Čejka, Jiří; Lappan, Uwe; Arki, Pal; He, Junjie; Schmidt, Johannes; Nachtigall, Petr; Thomas, Arne; Tarábek, Ján; Bojdys, Michael J.

This is the pre-peer reviewed version of the following article: Schwarz, D.; Kochergin, Y. S.; Acharja, A.; Ichangi, A.; Opanasenko, M. V.; Čejka, J.; Lappan, U.; Arki, P.; He, J.; Schmidt, J.; Nachtigall, P.; Thomas, A.; Bojdys,* M. J. Chem. – Eur. J. 2017, DOI: 10.1002/chem.201703332.

 

Donor-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 due to the fundamentally different chemistry of the donor- and acceptor-subunits. We present a family of sulphur and nitrogen containing porous polymers (SNPs) that are obtained via Sonogashira-Hagihara cross-coupling and that combine electron-withdrawing triazine (C3N3) and electron donating, sulphur-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 we report one of the highest photocatalytic hydrogen evolution rates for a cross-linked polymer without Pt co-catalyst (194 µmol h-1 g-1).

Files (28.8 MB)
Name Size
chem201703332_Manuscript.docx
md5:d3c89cfdc96284291add1c9e2de4b897
11.3 MB Download
chem201703332_Supporting Information.docx
md5:45a0a65040486eeafcac20871aaf35bc
17.5 MB Download

Share

Cite as