Abstract: A photoresponsive ionic organic compound of formula (I); a method of producing the same; a photoresponsive carbon nanotube (CNT) dispersant; a CNT dispersion containing the dispersant; and a method of separating a CNT from the dispersion: wherein R1, R2, and R3 each represent a hydrogen atom or an alkyl group; A represents —CH— or a nitrogen atom; X represents an anion; and n is a number to give a charge of ?2 to nX.

Abstract: Disclosed are a novel ionic organic compound and a method for producing the ionic organic compound by a simple process. Also disclosed are a hydrogelling agent composed of an ionic organic compound obtained by the method, an alcohol gelling agent, a gel which uses the gelling agent, while using water or methanol as a medium, and a carbon nanotube dispersant composed of the compound. Specifically disclosed is an ionic organic compound represented by general formula (1). The compound is obtained by a condensation reaction of (A) an aromatic diamide compound or cyclohexane diamide compound having a 4-(chloromethyl)benzamide group at both ends, and (B) a compound selected from N,N,N?,N?-tetramethylalkylenediamines which may have a substituent wherein there are 1-6 carbon atoms between nitrogen atoms. The thus-obtained ionic organic compound serves as a gelling agent which is capable of gelling a neutral aqueous solution or an alcohol.

Abstract: A photoresponsive ionic organic compound of formula (I); a method of producing the same; a photoresponsive carbon nanotube (CNT) dispersant; a CNT dispersion containing the dispersant; and a method of separating a CNT from the dispersion: wherein R1, R2, and R3 each represent a hydrogen atom or an alkyl group; A represents —CH— or a nitrogen atom; X represents an anion; and n is a number to give a charge of ?2 to nX.

Abstract: Disclosed are a novel ionic organic compound and a method for producing the ionic organic compound by a simple process. Also disclosed are a hydrogelling agent composed of an ionic organic compound obtained by the method, an alcohol gelling agent, a gel which uses the gelling agent, while using water or methanol as a medium, and a carbon nanotube dispersant composed of the compound. Specifically disclosed is an ionic organic compound represented by general formula (1). The compound is obtained by a condensation reaction of (A) an aromatic diamide compound or cyclohexane diamide compound having a 4-(chloromethyl)benzamide group at both ends, and (B) a compound selected from N,N,N?,N?-tetramethylalkylenediamines which may have a substituent wherein there are 1-6 carbon atoms between nitrogen atoms. The thus-obtained ionic organic compound serves as a gelling agent which is capable of gelling a neutral aqueous solution or an alcohol.

Abstract: Disclosed herein are a method for inducing apoptosis of cancer cells, which comprises administering an effective amount of a 2-nitroimidazole derivative represented by the general formula (1): ##STR1## wherein R represents an alkyl, alkenyl or alkynyl group substituted by 1 to 3 hydroxyl groups, and a method for treating a cancer, which comprises using the method for inducing apoptosis in combination with another means for killing cancer cells.