TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Pigment: Alternately, the pigment has structure of formulae (4) or (7-10).A1-A4, n, R1-R3, X, Q = same as above;Y,B1 = nitrogen atom or CR7; andR7,R8,R9 = R4.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Semiconductor: The semiconductor is metal oxide or metal sulfide semiconductor. Preferred Definitions:    Q = (Cp-1)-(Cp-4),(Cp-6) and (Cp-15) of formula (9);    R63,R64 = H, alkyl, alkenyl, aryl, heterocyclic, acyl amino, alkyl sulfonyl amino, aryl sulfonyl amino, amino, alkylamino, alkyl thio, aryl thio, alkoxy, aryloxy, ureido, alkoxy carbonylamino, carbamoyl, carboxyl or alkoxycarbonyl;    R65,R67 = H, alkyl, aryl, heterocyclic, acylamino, alkyl sulfonyl amino, aryl sulfonyl amino, amino, alkylthio, arylthio, alkoxyl, aryloxy, ureido, alkoxy carbonylamino, acryl, carboxyl, alkoxycarbonyl or carbamoyl;    R87,R88 = H, alkyl, aryl, heterocyclic, carbamoyl, alkoxycarbonyl, aryloxy carbonyl, carboxyl, cyano, sulfamoyl, alkyl sulfonyl, aryl sulfonyl or nitro group;    R89 = H, alkyl, aryl or heterocyclic group;    R91 = R87 except hydrogen;    R93,R94 = H, alkyl, aryl, heterocyclic, acyl amino, ureido, alkoxy carbonyl amino, alkyl, aryl sulfonyl amino, halogen, carboxyl, amino, alkyl thio, aryl thio, alkoxy or aryloxy group.    SPECIFIC COMPOUNDS - About 50 compounds of formula (1) are disclosed such as compounds (I-1), (I-2), of formula (19).    Q = 1 in (I-1) and 3 in (I-2).    EXAMPLE - Titanium tetraisopropoxide (62.5 ml) was added to pure water (375 ml) at room temperature for 10 minutes, and stirred vigorously. A white precipitate was produced. 70 % nitric acid aqueous solution (2.65 ml) was added and heated at 80 degrees C. Stirring was continued for 8 hours and concentrated until volume of reaction mixture was 200 ml. Titanium oxide powder (140 g) and pure water (125 ml) were added to the mixture and a titanium oxide suspension (800 ml) was prepared. The suspension was applied on transparent electroconductive glass panel coated with tin oxide which doped fluorine, and baked at 300 degrees C for 60 minutes after drying. A film-like titanium oxide was formed on the support. Subsequently, a solution of compound (I-2) of formula (19) (5 g) and methanol (200 ml) was prepared. The support was immersed into the solution. Trifluoroacetic acid (1) was added and ultrasonic irradiation was carried out for 2 hours. A photosensitive layer was formed on the support which was washed and vacuum dried. An optoelectric transducer was produced using the photosensitive layer, a counter electrode (tin oxide doped with fluoride), and a charge transfer layer. The optoelectric transducer was sealed using a resin. A lead wire was attached and a solar cell was obtained. The solar cell had excellent photoelectric conversion characteristics.