Novel multidecker porphyrin-phthalocyanine assemblies constructed around tripheylene cores Sultanah Alhunayhin and Andy Cammidge School of Chemistry, University of East Anglia, Norwich Research Park NR4 7TJ. s.alhunayhin@uea.ac.uk, A.Cammidge@uea.ac.uk Controlling the assembly of multiply functional components is important for both development of fundamental supramolecular chemistry and in the application of complex materials. Double and triple decker complexes of the porphyrinoid macrocycles display electronic absorption across the whole visible range and into the near IR. When the linking metal(s) are lanthanides, some examples offer further potential as molecular magnets and therefore as high density information storage components of the future. Our project focuses on synthetic strategies to assemble examples of such structures. In this project, we are focusing on the synthesis and assembly of new macrocycles by making multidecker systems of porphyrins and phthalocyanines and controlling the synthesis of high-order macrocycle–lanthanide complexes. The chosen core in this project was a triphenylene nucleus, where our lab has much experience in producing triphenylenes due to its use as a liquid crystal. The first stage of our work was to synthesise isomeric di-substituted triphenylenes as intermediates, then attach porphyrins by a single linker. The separation between porphyrins was hoped to influence triple-decker formation when using phthalocyanine as the central core with lanthanide metals. Significant progress has already been made and two full series of novel triple-deckers have successfully been synthesised and fully characterised. The selectivity of triple-decker formation was investigated for 2,3 versus 3,6–bis (porphyrin)triphenylene triple- deckers by using models with La metal. This experiment, using mixed starting materials, shows significant control of TD formation in that the isolated TD was found to be the 3,6-isomer predominantly.
Keywords: [Porphyrin-Phthalocyanine-Lanthanides] References
1. Birin, K. P.; Gorbunova, Y. G.; Tsivadze, A. Y. Dalton Trans. 2012, 41, 9672.González‐Lucas, D., Soobrattee, S., Hughes, D., Tizzard, G., Coles, S. and Cammidge, A.Chemistry – A European Journal. 2020, 26(47), pp.10724-10728.Li, J. He, Z. Zhao, H. Gopee, H. Kong, X. Xu, M. An, X. Jing, X.; Cammidge, A. N. Pure Appl Chem 2010, 82, 1993-2003.
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