我们报告了新定制的染料层,其一方面用于共价沉积,另一方面用于非共价后功能化 TiO 2纳米粒子薄膜。我们的功能化概念能够将第一层的稳定共价连接与通过汉密尔顿受体-氰尿酸结合基序作为第二层的高度通用和可逆的氢键混合。遵循这个概念,我们逐步集成了第一卟啉层和第二卟啉/BODIPY层。对各个构建块及其相应组合的光物理特性进行了探讨,最有希望的组合在染料敏化太阳能电池(DSSC)中实现。相对于第一卟啉层,添加第二卟啉/BODIPY层将总体DSSC效率提高了高达43%。
Self-assembly of supramolecular oligo-phenylene-ethynylene wires consisting of double Hamilton receptor modified OPE rods and a tetraphenylporphyrin cyanurate
作者:Florian Wessendorf、Andreas Hirsch
DOI:10.1016/j.tet.2008.08.054
日期:2008.12
The syntheses and characterizations of new oligo-phenylene-ethynylene (OPE) bridged bis-Hamilton receptors 8-9 and their linear H-bonding behaviour with a new cyanuric acid modified tetraphenylporphyrin (TPP) 13 are reported. The resulting rigid complexes consisting of an oligo-phenylene-acetylene wire and two terminating TPPs were characterized by H-1 NMR, UV/vis and fluorescence spectroscopies. The 1:2 compositions of the supramolecular complexes, the association constants K-n and the cooperativity of binding expressed by Scatchard plots and Hill coefficients eta(H) were determined by H-1 NMR titration experiments. The strength of the association constants K-n in CDCl3 at rt was found to be in a range of 10(5) and 10(6) mol(-1) dm(3) for the first complexation and 10(10)-10(12) mol(-1) dm(3) for the second complexation, which is rather strong. (C) 2008 Elsevier Ltd. All rights reserved.