Patent ID: 7758943

Claim:
An organic compound having a following general chemical structural formula: wherein n is an integer of 0 or 1, X represents oxygen atom, Y represents N—R4, L1, L2, L3, L4 represent substituted or non-substituted methine group, R1 represents substituted or non-substituted alkyl ester group with carbon number 1-18 (C 1-18 ), substituted or non-substituted arylester, R2 and R3 represent hydrogen atom, substituted or non-substituted alkyl group, substituted or non-substituted aryl group, substituted or non-substituted aralkyl group, substituted or non-substituted heterocyclic ring, ferrocenyl group, R4 represents substituted or non-substituted alkyl group with carbon number 1-18 (C 1-18 ), Z represents substituted or non-substituted alkylene group, or substituted or non-substituted alkylene group with oxygen atom, selenium atom, or nitrogen atom, so as to form a heterocyclic structure.