TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No preparation method is given. SPECIFIC COMPOUNDS - 2 Compounds (I) are disclosed i.e. ruthenium complex compound of formula (IA) and ruthenium complex compound of formula (IB).    EXAMPLE - Bithiophene (4 g) in a round bottom flask, followed by an anhydrous tetrahydrofuran solvent was added to dissolve the bithiophene. The temperature of the resulting solution was then lowered to -78 degrees C (e.g. using liquid nitrogen plus ethanol as a cryogen). n-Butyl lithium (7.6 ml) (2.5 M, dissolved in hexane) was gradually added into the bithiophene solution. After the temperature of the resulting solution has returned to room temperature, the solution was continuously stirred for 15 minutes. 1-Bromooctane (4.6 ml) was added to the solution, and the solution was continuously stirred for 10 hours. After a predetermined period of reaction time, deionized water was added to terminate the reaction, and an extraction was performed by adding ether to the solution. An organic layer was collected, and another extraction of the organic layer was performed by using respectively a saturated sodium hydrogen carbonate aqueous solution, deionized water and a saturated sodium chloride solution and worked up to give 4,4'-bis(5-octyl-2,2'-bithiophene). The obtained 4,4'-bis(5-octyl-2,2'-bithiophene) (4.2 g) was dissolved in an anhydrous tetrahydro furan (THF). The temperature of the solution was lowered to -78 degrees C using a cryogen, followed by adding butyl lithium (6 ml) to the solution. After this, the temperature of the solution was returned to room temperature, and the solution was stirred for 2 hours. Then, the temperature of the solution was again lowered to -78 degrees C, and chlorotrimethyl stannane (3.16 g) (dissolved in an appropriate amount of THF) was added to the solution. After the temperature of the solution was returned to room temperature, the solution was continuously stirred for 12 hours. Then deionized water was added to terminate the reaction, and an extraction was performed using respectively a saturated sodium hydrogen carbonate aqueous solution, deionized water and a saturated sodium chloride solution and worked up to give crude product of trimethyl(5-octyl-2.2'-bithiophene)stannane. Then, the 8-(trimethyl tin)-2-octylbithiophene (6 g) and 4,4'-dibromo-2,2'-bipyridine (2 g) were dissolved in anhydrous dimethylformamide (60 ml). Tetrakis(triphenylphosphine)palladium (0.44 g) was added as a catalyst. After this, the solution was heated and refluxed for 22 hours. When the temperature of the solution returned to room temperature, ammonium chloride aqueous solution (5 wt.%) was added to terminate the reaction and worked up to give first ligand of 4,4'-bis-(5'-octyl-(2,2')bithiophenyl-5-yl)-(2,2')bipyridinyl (ligand-1). Ruthenium(II) chloride(para-cymene) (0.4323 g) and the ligand-1 (1 g) were dissolved in anhydrous dimethylformamide (30 ml). The obtained solution was then heated to 80 degrees C for 4 hours. After this, 4,4'-bis(E-carboxyvinyl)-2,2'-bi-pyridine (0.4183 g) was added to the solution, followed by heating the solution to 160 degrees C for 4 hours. Then, an excessive amount of ammonium thiocyanate was added to the solution, and the reaction is allowed to continue for 5 hours at 130 degrees C. After the reaction was completed, the temperature of the solution was returned to room temperature. Then, the solution was concentrated by removing the solvent N,N-dimethylformamide using a vacuum system and worked up to give CYC-B5 (IA) (yield, 40.0%).