Supramolecular complexes obtained from porphyrin–crown ether conjugates and a fullerene derivative bearing an ammonium unit
作者:Nathalie Solladié、Mathieu E. Walther、Haiko Herschbach、Emmanuelle Leize、Alain Van Dorsselaer、Teresa M. Figueira Duarte、Jean-François Nierengarten
DOI:10.1016/j.tet.2005.07.120
日期:2006.2
has been prepared and its ability to form a supramolecular complex with a porphyrin–crown ether conjugate evidenced by NMR, UV–vis, electrospray mass spectrometry (ES-MS) and luminescence experiments. Interestingly, in addition to the ammonium–crown ether recognition, intramolecular stacking of the fullerene moiety and the porphyrin subunit has been evidenced. Due to this additional recognition element
制备了具有铵亚基(1)的亚甲基富勒烯衍生物,并具有与卟啉-冠醚共轭物形成超分子复合物的能力,这已通过NMR,UV-vis,电喷雾质谱(ES-MS)和发光实验证明。有趣的是,除了铵-冠醚识别外,富勒烯部分和卟啉亚基的分子内堆积也得到了证明。由于这种额外的识别元素,与发现1与苯并18-冠-6络合的K a值相比,超分子络合物的缔合常数增加了两个数量级。最后,由于阳离子1的缔合而产生的非共价体系带有两个冠醚亚基的卟啉衍生物已被研究。在这些超分子复合物中,分子内的C 60-卟啉相互作用也得到了证实。结果,如ES-MS研究所示,2:1配合物非常稳定。