TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Pigment: The pigment of general formula (I) preferably has formula (III-VII and/or IX). The pigment of general formula (II) preferably has formula (VIII or X). The pigment has carboxyl group(s) in the molecule.Ar3-Ar10 = aryl or heterocyclic ring group;Z3,Z4 = non-metallic atom group required to form 5-6C nitrogen containing heterocyclic ring, and one side shows H or R31 and/or R32 and another side shows -J3-D3 in formula (III), and one side shows H or R41 and/or R42 and another side shows -J4-D4 in formula (IV), one side shows H or R51 and/or R52 and another side shows -J5-D5 in formula (V), one side shows H or R61 and/or R62 and another side shows -J6-D6 in formula (VI), one side shows H or R71 and/or R72 and another side shows -J7-D7 in formula (VII), one side shows H or R81 and/or R82 and another side shows -J8-D8 in formula (VIII), one side shows H or R91 and/or R92 and another side shows -J9-D9 in formula (IX), one side shows H or R101 and/or R102 and another side shows -J10-D10 in formula (X);J3-J10 = bivalent coupling group having carbon(s);D3-D10 = pigment having chromophore;X1 = -O-, -S-, or -NR33;X2 = =O, =S, or =NR43;R33,R43 = H or substituent;Y2-Y5 = -N= or -CH=;Q1,Q2 = -N= or -CR52=;Q3,Q4 = -N= or -CR62=; andR51,R52,R61,R62 = H or substituent. SPECIFIC COMPOUNDS - 331 Pigment compounds such as (I-123, I-126, II-137) are disclosed in formula (15-105).    EXAMPLE - Titanium tetra-isopropoxide (62.5 ml) was dropped into pure water (375 ml) for 10 minutes and stirred. Nitric acid solution (2.65 ml) was added and heated at 80degreesC. The resulting mixture was stirred for 8 hours and concentrated. Titanium oxide powder (140) was added and titanium oxide suspension was prepared. The suspension was applied on transparent electroconductive glass plate coated with fluorine doped tin oxide, and baked at 300degreesC for 60 minutes and titanium oxide film was formed on support. Solution formed by dissolving the pigment compound (I-123) (5 g) in 200 ml of methanol was prepared. The support with titanium oxide film was immersed in the solution, trifluoroacetic acid (1 g) was added and ultrasonic irradiation was carried out for 2 hours. Subsequently the film was washed and dried and photosensitive layer (semiconductor for photoelectric conversion material) was produced. An optoelectric transducer was produced using the material. A solar cell was produced using the transducer. The solar cell had short circuit current density of 7.66 mA/cm2 and release voltage of 0.671 V.