N-TYPE MATERIALS AND ORGANIC ELECTRONIC DEVICES

摘要

The invention provides organic compounds of formula I, wherein each A is an independently selected conjugated electron withdrawing aromatic or heteroaromatic group; each D is an independently selected ethenylene group, ethynylene group or a conjugated electron donating aromatic or heteroaromatic group; r is an integer having a value of 2 or greater; each n is independently an integer from 1 to 20; and each p is independently an integer from 1 to 10. N-type acceptor materials derived from such compounds and devices comprising such n-type acceptor materials are also provided.