1, 10-phenanthroline compound as well as preparation method and application thereof

The invention relates to a 1, 10-phenanthroline compound as well as a preparation method and application thereof. The structural general formula of the compound is as shown in formula (1): # imgabs0 #, at least two of R1, R2, R3 and R4 are respectively and independently selected from one of the following groups (I-1)-(I-15), and the other groups are hydrogen; each R5 in # imgabs1, # imgabs2, # imgabs3 is independently selected from hydrogen, alkyl, alkoxy or cyano, R1 and R2 are independently selected from (I-1) and (I-2), and when R3 and R4 are both hydrogen, each R5 in (I-1) and (I-2) is not hydrogen or alkyl; and * represents a connection site. The compound has the advantages of excellent hole transport property, interface passivation capability and good stability, is suitable for being used as an interface modification material or a hole transport material, and can improve the open-circuit voltage, fill factor and photoelectric conversion efficiency of a photoelectric device and prolong the service life o