| Title: | Exploring the 'Goldilocks Zone' of Semiconducting Polymer Photocatalysts by Donor-Acceptor Interactions |
| Author(s): | Kochergin YS; Schwarz D; Acharjya A; Ichangi A; Kulkarni R; Eliasova P; Vacek J; Schmidt J; Thomas A; Bojdys MJ; |
| Address: | "Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nam. 2, 166 10, Prague, Czech Republic. Department of Organic Chemistry, Charles University in Prague, Hlavova 8, 128 00, Prague, Czech Republic. Institute of Chemistry, Technische Universitat Berlin, Hardenbergstrasse 40, 10623, Berlin, Germany. Department of Chemistry, Humboldt-Universitat zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany. Department of Physical and Macromolecular Chemistry, Charles University in Prague, Hlavova 8, 128 00, Prague, Czech Republic" |
| ISSN/ISBN: | 1521-3773 (Electronic) 1433-7851 (Linking) |
| Abstract: | "Water splitting using polymer photocatalysts is a key technology to a truly sustainable hydrogen-based energy economy. Synthetic chemists have intuitively tried to enhance photocatalytic activity by tuning the length of pi-conjugated domains of their semiconducting polymers, but the increasing flexibility and hydrophobicity of ever-larger organic building blocks leads to adverse effects such as structural collapse and inaccessible catalytic sites. To reach the ideal optical band gap of about 2.3 eV, A library of eight sulfur and nitrogen containing porous polymers (SNPs) with similar geometries but with optical band gaps ranging from 2.07 to 2.60 eV was synthesized using Stille coupling. These polymers combine pi-conjugated electron-withdrawing triazine (C(3) N(3) ) and electron donating, sulfur-containing moieties as covalently bonded donor-acceptor frameworks with permanent porosity. The remarkable optical properties of SNPs enable fluorescence on-off sensing of volatile organic compounds and illustrate intrinsic charge-transfer effects" |
| Keywords: | conjugated microporous polymers donor-acceptor systems fluorescence sensing photocatalysis triazine; |
| Notes: | "PubMed-not-MEDLINEKochergin, Yaroslav S Schwarz, Dana Acharjya, Amitava Ichangi, Arun Kulkarni, Ranjit Eliasova, Pavla Vacek, Jaroslav Schmidt, Johannes Thomas, Arne Bojdys, Michael J eng 678462/H2020 European Research Council/ TH1463/15-1/Deutsche Forschungsgemeinschaft/ EXC 314/2/Exzellenzcluster UniCat; Deutsche Forschungsgemeinschaft/ Germany 2018/08/31 Angew Chem Int Ed Engl. 2018 Oct 22; 57(43):14188-14192. doi: 10.1002/anie.201809702. Epub 2018 Sep 27" |
