FULLERENE DERIVATIVES AND RELATED MATERIALS, METHODS, AND DEVICES

摘要

The invention relates to improved fullerene derivatives, to methods for their synthesis and any educts or intermediates used in such methods, to compositions and formulations containing fullerene derivatives, to the use of the fullerene derivatives, compositions and formulations in, or for the preparation of, organic electronic (OE) devices like for example organic photovoltaic (OPV) devices or organic photodetectors (OPD), and to OE, OPV and OPD devices comprising, or being prepared from, these fullerene derivatives, compositions or formulations.

主权项

1. A compound of formula I wherein Cn is a fullerene composed of n carbon atoms, optionally with one or more atoms trapped inside, Adduct is a secondary adduct, or a combination of secondary adducts, appended to the fullerene Cn, m is the number of secondary adducts appended to the fullerene Cn, and is 0, an integer ≧1, or a non-integer >0, o is an integer ≧1, R1 to R8 are independently of each other H, a halogen atom, or a carbyl or hydrocarbyl group having 1 to 50 C atoms, or the pair of R5 and R7, and/or the pair of R6 and R8, are covalently bonded to form a carbocyclic, heterocyclic, aromatic or heteroaromatic group having 3 to 20 ring atoms that is optionally substituted, characterized in that in formula I at least one of R5 and R7 is different from H and at least one of R6 and R8 is different from H.