TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: The synthetic method of Michler's ketone-cyano type organic dye where group Ar represents 0 comprises (1) synthesizing Michler's substituted p-bromophenylalkene of formula A comprising adding potassium tert-butoxide to the tetrahydrofuran (THF) solution of Michler's phosphoric acid ester which molar concentration is 20-40% at 0 degrees C and under protection of nitrogen, where molar ratio of Michler's phosphoric acid ester to potassium tert-butoxide is 1:1-1.2; dropping THF solution of p-bromobenzaldehyde which molar concentration is 20-40% after reacting for 1 hour where molar ratio of Michler's phosphoric acid ester to p-bromobenzaldehyde is 1.1-1.5:1; reacting for 6 hours after dropping, hydrolyzing saturated ammonium chloride, extracting layer of water using ethyl acetate, drying using anhydrous magnesium sulfate, distilling the solvent, and crystallizing petroleum ether; (2) synthesizing Michler's substituted vinyl benzaldehyde of formula 4 comprising dissolving the prepared the Michler's substituted p-bromophenylalkene 1 which molar ratio is 5-30% in THF under protection of nitrogen; cooling the solvent to negative 78 degrees C, dropping n-butyllithium where molar ratio of Michler's substituted p-bromophenylalkene 1 to n-butyllithium is 1:1-1.2; reacting for 30 minutes at the temperature after dropping, adding dimethylformamide (DMF) where molar ratio of Michler's substituted p-bromophenylalkene 1 to DMF is 1:3-6; then reacting for 12 hours at room temperature, adding ice water to separate out the organic layer, extracting the layer of water three times using ethyl acetate, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; (3) synthesizing Michler's ketone-cyano type organic dye I comprising dissolving the prepared Michler's substituted vinyl benzaldehyde 4 in the acetonitrile in two round bottom flasks, molar concentration of solution is 5-20; adding cyanoacetic acid, molar ratio of Michler's substituted vinyl benzaldehyde 4 to cyanoacetic acid is 1:1.3-2; adding piperidine, molar ratio of Michler's substituted vinyl benzaldehyde 4 to piperidine is 1:1-2; reacting for 5 hours when reflowing, cooling to the room temperature, extracting using dichloroethene, washing water solution of saturated sodium chloride, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column. The synthetic method of Michler's ketone-cyano type organic dye where group Ar is benzene of formula II comprises (1) synthesizing Michler's substituted p-bromophenylalkene 1 comprising adding potassium tert-butoxide to THF solution of Michler's phosphoric acid ester which molar concentration is 20-40% at 0 degrees C and under protection of nitrogen where molar ratio of Michler's phosphoric acid ester to potassium tert-butoxide is 1:1-1.2; dropping THF solution of p-bromobenzaldehyde which molar concentration is 20-40% after reacting for 1 hour at the temperature where molar ratio of Michler's phosphoric acid ester to p-bromobenzaldehyde is 1.1-1.5:1; reacting for 6 hours after dropping, hydrolyzing saturated ammonium chloride, extracting the layer of water using ethyl acetate, drying using anhydrous magnesium sulfate, distilling the solvent, and crystallizing petroleum ether; (2) synthesizing Michler's substituted vinyl phenylboronic acid 3 comprising dropping n-butyllithium to THF solution of Michler's substituted p-bromophenylalkene 1 which molar ratio is 5-20% under protection of nitrogen, molar ratio of the Michler's substituted p-bromophenylalkene 1 to n-butyllithium is 1:1-1.2; reacting for 3 hours at the temperature after dropping, adding trimethyl borate, molar ratio of Michler's substituted p-bromophenylalkene 1 to trimethyl borate is 1:1.2-1.5; reacting for 24 hours at room temperature after adding, adding water solution of saturated ammonium chloride, separating out organic layer, extracting layer of water using ethyl acetate, combining the organic layer, drying the organic layer using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; (3) synthesizing Michler's substituted vinyl biphenyl formaldehyde 5 comprising adding the prepared Michler's substituted vinyl phenylboronic acid of formula 3 and p-bromobenzaldehyde to two reacting flasks, molar ratio of Michler's substituted vinyl phenylboronic acid 3 to p-bromobenzaldehyde is 1:1.2-2.5; adding ethylene glycol dimethyl ether to dissolve the reactants, adding tetrakis(triphenylphosphine)palladium where molar ratio of Michler's substituted vinyl phenylboronic acid 3 to tetrakis(triphenylphosphine)palladium is 1:0.001-0.01; adding water solution of sodium carbonate which concentration is 1 mole/L, extracting using ethyl acetate after reflowing for 18 hours, washing the organic layer for three times using the water solution of saturated sodium carbonate, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; and (4) synthesizing Michler's ketone-cyano type organic dye II comprising dissolving Michler's substituted vinyl biphenyl formaldehyde of formula 5 in the acetonitrile in two round bottom flasks, molar concentration of solution is 5-20; adding cyanoacetic acid, molar ratio of Michler's substituted vinyl biphenyl formaldehyde 5 to cyanoacetic acid is 1:1.3-2; adding piperidine, molar ratio of Michler's substituted vinyl biphenyl formaldehyde 5 to piperidine is 1:1-2; reacting for 5 hours when reflowing, cooling to room temperature, extracting using dichloroethene, washing the water solution of saturated sodium chloride, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column. The synthetic method of Michler's ketone-cyano type organic dye where Ar represents thiophene of formula III comprises (1) synthesizing Michler's substituted p-bromophenylalkene 1 comprising adding potassium tert-butoxide to THF solution of Michler's phosphoric acid ester which molar concentration is 20-40% at 0 degrees C and under protection of nitrogen, molar ratio of Michler's phosphoric acid ester to potassium tert-butoxide is 1:1-1.2; dropping THF solution of p-bromobenzaldehyde which molar concentration is 20-40% after reacting for 1 hour at the temperature where molar ratio of Michler's phosphoric acid ester to p-bromobenzaldehyde is 1.1-1.5:1; reacting for 6 hours after dropping, hydrolyzing saturated ammonium chloride, extracting the layer of water using ethyl acetate, drying using anhydrous magnesium sulfate, distilling the solvent, and crystallizing the petroleum ether; (2) synthesizing Michler's substituted p-thienylphenylalkene of formula 2 comprising adding Michler's substituted p-bromophenylalkene 1 and 2-thienylboronic acids to two reacting flasks under protection of nitrogen, molar ratio of Michler's substituted p-bromophenylalkene 1 to 2-thienylboronic acids is 1:1-1.3; adding ethylene glycol dimethyl ether dissolved reactants then adding tetrakis(triphenylphosphine)palladium, molar ratio among Michler's substituted p-bromophenylalkene 1, 2-thienylboronic acids, and tetrakis(triphenylphosphine)palladium is 1:1-1.3:0.001-0.01; adding water solution of sodium carbonate which molar concentration is 1 mole/L, reflowing for 18 hours after adding, extracting using ethyl acetate, washing using the saturated sodium chloride, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; (3) synthesizing Michler's substituted vinyl phenyl thiophene-2-carbaldehyde of formula 6 comprising dissolving Michler's substituted p-thienylphenylalkene 2 in THF which molar concentration is 5-20%; cooling the solution to negative 78 degrees C, dropping n-butyllithium, molar ratio of Michler's substituted p-thienylphenylalkene 2 to n-butyllithium is 1:1-1.5; reacting for 30 minutes at room temperature after dropping, adding DMF, molar ratio of Michler's substituted p-thienylphenylalkene 2 to DMF is 1:2-6; reacting at room temperature for 12 hours, adding ice water to separate out the organic layer, extracting the layer of water for three times using ethyl acetate, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; and (4) synthesizing Michler's ketone-cyano type organic dye III comprising dissolving Michler's substituted vinyl phenyl thiophene-2-carbaldehyde 6 in the acetonitrile in two round bottom flasks, molar concentration of solution is 5-20; adding cyanoacetic acid, molar ratio of Michler's substituted vinyl phenyl thiophene-2-carbaldehyde 6 to cyanoacetic acid is 1:1.3-2; adding piperidine, molar ratio of Michler's substituted vinyl phenyl thiophene-2-carbaldehyde 6 to piperidine is 1:1-2; reacting for 5 hours when reflowing, cooling to room temperature, extracting using dichloroethene, washing the water solution of saturated sodium chloride, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column. The synthetic method of Michler's ketone-cyano type organic dye compound I where Ar represents bithiophene of formula IV comprises (1) synthesizing Michler's substituted p-bromophenylalkene 1 comprising adding potassium tert-butoxide to THF solution of Michler's phosphoric acid ester which molar concentration is 20-40% at 0 degrees C and under protection of nitrogen where molar ratio of Michler's phosphoric acid ester to potassium tert-butoxide is 1:1-1.2; dropping THF solution of p-bromobenzaldehyde which molar concentration is 20-40% after reacting for 1 hour at the temperature, molar ratio of Michler's phosphoric acid ester to p-bromobenzaldehyde is 1.1-1.5:1; reacting for 6 hours after dropping, hydrolyzing saturated ammonium chloride, extracting the layer of water by using ethyl acetate, drying using anhydrous magnesium sulfate, distilling the solvent, and crystallizing the petroleum ether; (2) synthesizing Michler's substituted vinyl phenylboronic acid 3 comprising dropping n-butyllithium to THF solution of Michler's substituted p-bromophenylalkene 1 which molar ratio is 5-20% under protection of nitrogen, molar ratio of Michler's substituted p-bromophenylalkene 1 to n-butyllithium is 1:1-1.2; reacting for 3 hours at the temperature after dropping, adding trimethyl borate, molar ratio of Michler's substituted p-bromophenylalkene 1 to trimethyl borate is 1:1.2-1.5; reacting for 24 hours at room temperature after adding, adding water solution of saturated ammonium chloride, separating out the organic layer, extracting the layer of water using ethyl acetate, combining the organic layer, drying the organic layer using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; (3) synthesizing Michler's substituted vinyl bithiophyl formaldehyde of formula 7 comprising adding the prepared Michler's substituted vinyl phenylboronic acid 3 and 5-bromo-5'-formacyl-2,2'-dithiophene to two reacting flasks, molar ratio of Michler's substituted vinyl phenylboronic acid 3 to 5-bromo-5'-formacyl-2,2'-dithiophene is 1:1.2-2.0; adding ethylene glycol dimethyl ether to dissolve the reactants, adding Michler's substituted vinyl phenylboronic acid 3 to the tetrakis(triphenylphosphine)palladium with ratio of 1:0.001-0.01; adding the water solution of sodium carbonate which concentration is 1 mole/L, extracting using ethyl acetate after reflowing for 18 hours, washing the organic layer three times using the water solution of saturated sodium carbonate, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; (4) synthesizing Michler's ketone-cyano type organic dye IV comprising dissolving Michler's substituted vinyl bithiophyl formaldehyde 7 in the acetonitrile in two round bottom flasks, molar concentration of solution is 5-20; adding cyanoacetic acid, molar ratio of Michler's substituted vinyl bithiophyl formaldehyde 7 to cyanoacetic acid is 1:1.3-2; adding piperidine, molar ratio of Michler's substituted vinyl bithiophyl formaldehyde 7 to piperidine is 1:1-2; reacting for 5 hours when reflowing, cooling to the room temperature, extracting using dichloroethene, washing the water solution of saturated sodium chloride, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column. The synthetic method of Michler's ketone-cyano type organic dye where Ar represents phenylthiophene of formula V comprises (1) synthesizing Michler's substituted p-bromophenylalkene 1 comprising adding potassium tert-butoxide to the THF solution of Michler's phosphoric acid ester which molar concentration is 20-40% at 0 degrees C and under protection of nitrogen, molar ratio of Michler's phosphoric acid ester to potassium tert-butoxide is 1:1-1.2; dropping THF solution of p-bromobenzaldehyde which molar concentration is 20-40% after reacting for 1 hour at the temperature where molar ratio of Michler's phosphoric acid ester to p-bromobenzaldehyde is 1.1-1.5:1; reacting for 6 hours after dropping, hydrolyzing saturated ammonium chloride, extracting the layer of water using ethyl acetate, drying using anhydrous magnesium sulfate, distilling the solvent, and crystallizing the petroleum ether; (2) synthesizing Michler's substituted vinyl phenylboronic acid 3 comprising dropping n-butyllithium to the THF solution of Michler's substituted p-bromophenylalkene 1 which molar ratio is 5-20% under protection of nitrogen where molar ratio of Michler's substituted p-bromophenylalkene 1 to n-butyllithium is 1:1-1.2; reacting for 3 hours at the temperature after dropping, adding trimethyl borate where molar ratio of Michler's substituted p-bromophenylalkene 1 to trimethyl borate is 1:1.2-1.5; reacting for 24 hours at room temperature, adding water solution of saturated ammonium chloride, separating out the organic layer, extracting the layer of water using ethyl acetate, combining the organic layer, drying the organic layer using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; (3) synthesizing Michler's substituted vinyl thienyl benzaldehyde of formula 8 comprising adding the prepared Michler's substituted vinyl phenylboronic acid 3 and the 4-(5-bromo-thienyl)benzaldehyde to two reacting flasks where molar ratio of Michler's substituted vinyl phenylboronic acid 3 to 4-(5-bromo-thienyl)benzaldehyde is 1:1.1-1.8; adding ethylene glycol dimethyl ether to dissolve the reactants, adding tetrakis(triphenylphosphine)palladium where molar ratio of Michler's substituted vinyl phenylboronic acid 3 to tetrakis(triphenylphosphine)palladium is 1:0.001-0.01; adding the water solution of sodium carbonate which concentration is 1 mole/L, extracting using ethyl acetate after reflowing for 18 hours, washing the organic layer three times using the water solution of saturated sodium carbonate, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column; (4) synthesizing Michler's ketone-cyano type organic dye V comprising dissolving Michler's substituted vinyl thienyl benzaldehyde 8 in the acetonitrile in two round bottom flasks where molar concentration of solution is 5-20; adding cyanoacetic acid where molar ratio of Michler's substituted vinyl thienyl benzaldehyde 8 to cyanoacetic acid is 1:1.3-2; adding piperidine where molar ratio of Michler's substituted vinyl thienyl benzaldehyde 8 to piperidine is 1:1-2; reacting for 5 hours when reflowing, cooling to room temperature, extracting using dichloroethene, washing the water solution of saturated sodium chloride, drying using anhydrous magnesium sulfate, filtering and distilling the solvent, and chromatographically separating the column.