Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstr 40, 10623 Berlin, Germany.
Macromol Rapid Commun. 2013 Jun 25;34(12):1008-13. doi: 10.1002/marc.201300227. Epub 2013 May 6.
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.
在这项工作中，将两种新兴的材料类别结合在一起，即聚合型碳氮化物和微孔聚合物网络。前者，聚合型碳氮化物，由胺桥接的六嗪部分组成，表现出作为无金属光催化剂的有趣性能。然而，这些材料必须在高温下制备，这使得它们的化学结构难以控制。后者，微孔聚合物网络，由于其高表面积而受到越来越多的关注，在气体储存或催化方面具有有趣的应用。在这里，碳氮化物的中心构建块，即功能化的六嗪作为单体，和构筑基元被用于构建微孔聚合物网络。所得的基于六嗪的微孔聚合物具有高孔隙率，而它们的化学结构类似于碳氮化物。这些聚合物在可见光照射下，甚至在光催化产氢方面表现出活性。
