Design, Synthesis And Performance Studies Of Fullerene Two- And Three-dimensional Systems

The increasing of energy demand makes efficient utilization of renewable energy an urgent problem to be solved.The use of solar energy can meet the demand of developing clean,sustainable energy.Photosynthesis can transform solar energy into chemical energy cleverly in the nature,and light-induced charge-transfer becomes the key to this transformation.Therefore,it is possible to simulate the photosynthesis by constructing a multimodular system to produce the multi-step photo induced charge-transfer.Fullerene,C₆₀,is a popular choice as an electron acceptor because of its appropriate reduction potentials and low reorganization energy needs in electron-transfer reactions.As electron receptor,fullerene and its derivatives play an indispensable role in the study of photo induced electron-transfer.In this paper,several donor-acceptor linked dyads were constructed.On the basis of this,a series of donor-acceptor linked triads were built up through increasing chromophoric groups or introducing the secondary electron donors,in order to obtain long-lived charge separation state.This article is provided necessary theoretical and experimental support for the application of the fullerene metal complexes in optoelectronic devices.This dissertation mainly focus on the study as follows:Firstly,synthesis of donor-acceptor linked dyads.Six kinds of metalloporphyrins compounds were synthesized via a set of reations using benzaldehyde,3-hydroxybenzaldehyde,pyrrole etc.as the raw materials.C₆₀ was induced to form six metalloporphyrin-C₆₀ linked dyads by Bingel reaction,their structures have been determined by nuclear magnetic resonance spectroscopy analyses,and further characterized by high resolution mass and infrared spectra?IR?analyses.Secondly,synthesis of metallic donor-acceptor triads.A metallic BDP-TPP-C₆₀ triads was successfully synthesized via a set of reations using benzaldehyde,p-hydroxybenzaldehyde,pyrrole,C₆₀ etc.as the raw materials,its structure has been determined by nuclear magnetic resonance spectroscopy analyses,and further.characterized by high resolution mass and infrared spectra?IR?analyses.In addition,another bpy-4T-C₆₀ triads was synthesized via a set of reations using bipyridine derivatives,polythiophene derivatives,C₆₀ etc.as the raw materials.A metallic bpy-4T-C₆₀ triads was obtained through coordinated it with copper ion.Thirdly,synthesis of donor-acceptor triads without metal.A closely space TPA-TBDPY-C₆₀ triad was firstly synthesized via a set of reations using BODIPY derivative,triarylamine boronicacid,C₆₀ etc.as the raw materials,its structure has been determined by nuclear magnetic resonance spectroscopy analyses,and further characterized by infrared spectra?IR?analyses.In addition,another TPA-TDPPT-C₆₀ triads was built by introduction the secondary electron donors,and its structure was characterized by high resolution mass and nuclear magnetic resonance spectroscopy analyses.These would provide important theoretical basis for obtaining D-A systems with long-lived charge separation state.