Patent ID: 8563761

Claim:
A polycyclic complex corresponding to one of the general formulae: in which: D represents boron B or aluminum Al; R 1 represents R, R F , NO 2 , CN, C(═O)OR, RSO 2 or R F SO 2 ; each of the —X 1 —, —X 2 —, —X 3 — and X 4 groups represents, independently of the others, a >C═O, >C═NC≡N, >C═C(C≡N) 2 , >CR 2 R 3 or >SO 2 divalent group; each of the —Y 1 —, —Y 2 — and —Y 3 — groups represents, independently of the others, an —O—, >N(C≡N), >N(COR F ), >N(SO 2 R 4 ), >NR 4 , >N(COR 4 ) or >N(SO 2 R F )divalent group; R, R 2 and R 3 each represent, independently of the others, H, an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, an oxaalkyl group or an alkenyl group; R 4 represents an alkyl group, an aryl group, an alkylaryl group, a heteroaryl group, an arylalkyl group, an oxaalkyl group, an alkenyl group or an R F CH 2 group; R F is a perfluoroalkyl group or a partially fluorinated alkyl group, or a partially or completely fluorinated phenyl group; each of the R′ 2 and R′ 3 groups represents R or F; wherein: several R or R F groups can be linked together so as to form a segment of an oligomer or of a polymer; in a ID and IID complex, if two groups among —X 1 —, —X 2 — and —X 3 — each represent >C═O, then the third group represents a >CR 2 R 3 group; in a ID complex, if each of the X 1 , X 2 and X 3 groups is a CH 2 group and each of the Y groups is O, then R 1 is other than CH 3 .