Patent ID: 7316890

Claim:
An indolestyryl compound having a formula (I), of: or formula (II), of: wherein R 1 is —CH 2 C 6 H 4 CO 2 R 6 , —CH 2 SO 2 C 6 H 4 F, —(CH 2 ) n CO 2 R 6 , —(CH 2 ) n SO 3 R 6 , α-naphthylmethyl, or β-naphthylmethyl, wherein n is 1˜8, and R 6 is polycyclic alkyl group, aryl group, fluoroaryl group, naphthyl group or —C 6 H 4 SCH 3 , and R 6 is polycyclic alkyl group, fluoroaryl group, or —C 6 H 4 SCH 3 when R 1 is —(CH 2 ) n CO 2 R 6 ; R 2 and R 3 are the same or different and comprised hydrogen atom, substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, substituted or unsubstituted alkoxy group having 1 to 8 carbon atoms, or alkoxycarbonyl group, and R 2 and R 3 optionally comprise a heterocycloalkyl group, hetero-polycycloalkyl group, or heteroaryl group, with N or aniline bonded thereby; R 4 and R 5 are the same or different and comprised hydrogen atom, alkyl group, alkoxy group, fluoroalkyl group, halogen atom, nitro group, carboxylic group, acyl group, sulfonic acid group, sulfonyl group, sulfoamide group, amino group or amide group; Y − is tetracyano p-quinodimethane (TCNQ − ), tetracyanoethylene (TCNE − ), ClO 4 − , SbF 6 − , PF 6 − , BF 4 − , halogen anion, HSO 3 − , HSO 4 − , or organometallic anion; and at least one hydrogen atom bonded to the carbon atom of the indolestyryl compound according to formula (I) or formula (II) is substituted optionally by a halogen atom, carboxylic group, acyl group, nitro group, amino group, amide group, sulfonic acid group, sulfonyl group, sulfoamide group, alkyl group, alkoxy group, alkoxycarbonyl group or fluoroalkyl group.