Modification of Alkyl Group with Aryl Group Side Chain in Simple and Small Molecule Non-fullerene Acceptor for Organic Solar Cells
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To further advance organic solar cells, various molecular synthetic strategies have been proposed and applied in designing donor and acceptor with desirable physical properties. Among the building blocks of various molecular structures, there is no alkyl group with an aryl structure in the side chain, or research on length control and bulkiness is sluggish. The effect of the cyclic alkyl group having an aryl structure on molecular aggregation depends on the position of substitution and the type of molecular structure. The introduction of an alkyl group having an aryl structure may control intermolecular aggregation. This study, non-fullerene acceptors (NFA) were easily synthesized by changing alkyl with aryl group chains to terminal structures within a simple molecular structure. It can provide a useful side-chain for the design of NFAs.