title: Room temperature synthesis of heptazine-based microporous polymer networks as photocatalysts for hydrogen evolution.
abstract: Two emerging material classes are combined in this work, namely polymeric carbon nitrides and microporous polymer networks. The former, polymeric carbon nitrides, are composed of amine-bridged heptazine moieties and showed interesting performance as a metal-free photocatalyst. These materials have, however, to be prepared at high temperatures, making control of their chemical structure difficult. The latter, microporous polymer networks have received increasing interest due to their high surface area, giving rise to interesting applications in gas storage or catalysis. Here, the central building block of carbon nitrides, a functionalized heptazine as monomer, and tecton are used to create microporous polymer networks. The resulting heptazine-based microporous polymers show high porosity, while their chemical structure resembles the ones of carbon nitrides. The polymers show activity for the photocatalytic production of hydrogen from water, even under visible light illumination.
authors: Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstr 40, 10623 Berlin, Germany. kamalakannan@mailbox.tu-berlin.de
authors: Kamalakannan
authors: K
authors: Kailasam
authors: Johannes
authors: J
authors: Schmidt
authors: Hakan
authors: H
authors: Bildirir
authors: Guigang
authors: G
authors: Zhang
authors: Siegfried
authors: S
authors: Blechert
authors: Xinchen
authors: X
authors: Wang
authors: Arne
authors: A
authors: Thomas
mesh_terms: D002384:Catalysis / Q000528:radiation effects; D006575:Heterocyclic Compounds, 3-Ring / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D015394:Molecular Structure; D009570:Nitriles / Q000737:chemistry; D055668:Photochemical Processes; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D016062:Porosity; D013696:Temperature; D014227:Triazines / Q000737:chemistry*
chemical_list: D006575:Heterocyclic Compounds, 3-Ring; D009570:Nitriles; D011108:Polymers; D014227:Triazines; C011206:cyanogen; D006859:Hydrogen; C507296:heptazine