Preparation method and application of photoinduced electron transfer supramolecular nanoparticles

Abstract

The invention provides photoinduced electron transfer supramolecular nanoparticles. A construction unit of the nanoparticles is composed of terpyridine ruthenium (2+) modified pillar[5]arene as a hostand valeronitrile-modified triarylamine as a guest, and the nano supramolecular assembly is constructed by host-guest complexation; and a preparation method of the nanoparticles comprises the steps of preparing a solution from the terpyridine ruthenium (2+) modified pillar[5]arene and valeronitrile-modified triarylamine in a stoichiometric ratio of 3:2 and performing uniform mixing. The nanoparticles and method provided by the invention have the following advantages: the photoinduced electron transfer supramolecular nanoparticles have the simple preparation method, a small use amount, and higher photoinduced electron transfer efficiency, the photoinduced electron transfer process can be regulated by the competitive guest to realize controllable photoinduced electron transfer, and the nanoparticles have broad application prospects in the field of developing controllable and efficient solar cells, photodynamic therapy materials and photocatalysts.

Description

technical field [0001] The invention belongs to the technical field of nano-supramolecular materials, in particular to a preparation method and application of controllable photo-induced electron transfer nanoparticles. Background technique [0002] Photoelectron transfer (PET) reaction is a very important process in nature and science and technology, and is widely used in solar energy conversion, photocatalysis, synthetic organic photoreactions, super-resolution imaging and photodynamic therapy, etc. See: (1) M.K. Brennaman, R.J.Dillon, L.Alibabaei, M.K.Gish, C.J.Dares, D.L.Ashford, R.L.House, G.J.Meyer, J.M.Papanikolas, T.J.Meyer, J.Am.Chem.Soc.2016,138,13085-13102;(2)M.R. Gill, J. A. Thomas, Chem. Soc. Rev. 2012, 41, 3179-3192; (3) H. Huang, B. Yu, P. Zhang, J. Huang, Y. Chen, G. Gasser, L. Ji, H.Chao,Angew.Chem.Int.Ed.2015,54,14049-14052.(4)R.F.Laine,G.S.Kaminski Schierle,S.van de Linde,C.F.Kaminski,MethodsAppl.Fluoresc.2016,4,022004.( 5) D.L.Ashford, M.K.Gish, A.K.Vann...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of low and uncontrollable photoinduced electron transfer efficiency and provide a preparation method and application of photoinduced electron transfer nanoparticles. The supramolecular nanosystem is based on electron-rich triarylamine derivatives Pillar[5]arenes modified with electron-deficient terpyridine ruthenium (+2) interweave to form relatively regular nanoparticles through host-guest complexation. Triarylamine has a relatively strong electron donating ability and terpyridine ruthenium (+2 ) have a strong ability to accept electrons, increase the difference between HOMO and HOMO orbitals between them, and improve the efficiency of photoinduced electron transfer; at the same time, it is possible to control the process of photoinduced electron transfer through supramolecular non-covalent interaction

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