TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: Preparation (Disclosed): Preparation of (I) comprises reacting 5-(5-(5-(14-(5-(5-(5-formylthiophen-2-yl)thiophen-2-yl)thiophen-2-yl)tricyclo(9.4.0.0(3,8))pentadeca-1(11),3(8),4,6,9,12,14-heptaen-5-yl)thiophen-2-yl)thiophen-2-yl)thiophene-2-carbaldehyde compounds of formula (II) with substituted cyanomethyl ester of formula (R2-O-C(=O)-CH2-CN) to give (Z)-4-(5''-(7-(5''-((Z)-3-carboxy-3-cyano-propenyl)-(2,2';5',2'')terthiophen-5-yl)-5H-dibenzo(a,d)cyclohepten-3-yl)-(2,2';5',2'')terthiophen-5-yl)-2-cyano-but-3-enoic acid compounds of formula (III) (representative of (I)).R11-R16 = 3-10C alkyl.Preferred Components: The conjugated oligomer is a repeating unit comprising thiophene, benzene, pyrene, pyrroline, furan, benzofuran, benzothiophene, benzothiodiazole, pyridine, quinoline, isoquinoline, pyrazine, pyrimidine, pyrrole, pyrazole, imidazole, indole, thiazole, isothiazole, oxazole, isoxazole, benzothiazole, benzoxazole, 1,2,4-triazole, 1,2,3-triazole, phenanthroline, oxadiazolopyridine, pyridopyrazine, benzooxadiazole, thiadiazolopyridine, selenophene, thiadiazoloquinoxaline, thienopyrazine, quinoxaline, or diketopyrrolopyrrole. The conjugated oligomer is of formula (IV), or 3,3''-dihexyl-5,5''-dimethyl-(2,2';5',2'')terthiophene. The electron withdrawing group comprises alkyl alpha -cyanoacrylate, 1,1-dicyanoethylene, halogen, or nitro group. The alkyl alpha -cyanoacrylate is formula (V).R1 = H or 3-10C alkyl;n = 2-20, preferably 3; andR2 = 3-10 alkyl. SPECIFIC COMPOUNDS - 1 Compound (I) is disclosed, i.e. fluorene-octyl (3Z)-2-cyano-4-(5-(5-(5-(14-(5-(5-(5-((1Z)-3-cyano-4-(octyloxy)-4-oxobut-1-en-1-yl)-3-hexylthiophen-2-yl)thiophen-2-yl)-4-hexylthiophen-2-yl)tricyclo(9.4.0.0(3,8))pentadeca-1(11),3(8),4,6,9,12,14-heptaen-5-yl)-3-hexylthiophen-2-yl)thiophen-2-yl)-4-hexylthiophen-2-yl)but-3-enoate complex of formula (Ia).    EXAMPLE - Reflux condenser was connected to a 50 ml two- necked round bottom bottle, and a stirrer bar was put into the bottle. The bottle was vacuum dried and then filled with nitrogen. 2501 mg of 3,7-dibromo-5,5-spirofluorenyl(a,d)cycloheptene, 2666 mg of bis(pinacolato)diboron, 2356mg of potassium acetate, and 163 mg of catalyst (1,1'-bis(diphenylphosphino)ferrocene)dichloropalladium(II)) were sequentially added into the bottle. 100 ml of dexoygenated 1,4-dioxane was injected into the bottle. The mixture in the bottle was heated to reflux for 18 hours, and then cooled to room temperature. The cooled reaction was bubbled by oxygen to be quenched. The quenched reaction was extracted by 20 ml of dichloromethane 3 times. The extraction was dried by anhydrous magnesium sulfate, filtered by celite, and then condensed by a rotatory condenser to obtain a crude. The crude was washed by 20 ml of methanol 3 times to obtain 2427 mg of the white solid fluorene-octyl (3Z)-2-cyano-4-(5-(5-(5-(14-(5-(5-(5-((1Z)-3-cyano-4-(octyloxy)-4-oxobut-1-en-1-yl)-3-hexylthiophen-2-yl)thiophen-2-yl)-4-hexylthiophen-2-yl)tricyclo(9.4.0.0(3,8))pentadeca-1(11),3(8),4,6,9,12,14-heptaen-5-yl)-3-hexylthiophen-2-yl)thiophen-2-yl)-4-hexylthiophen-2-yl)but-3-enoate complex of formula (Ia).