TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): A thiophene disilole compound (I) preparation method, which involves dissolving tetrabromothiophene into tetrahydrofuran solution under room temperature in nitrogen atmosphere. Organic amine, di(triphenyl phosphorus) palladium chloride, cuprous iodide and ethynyl trimethyl silane are added to obtain dibromothiophene compound containing ethynyl trimethyl silane. The dibromothiophene compound containing ethynyl trimethyl silane is dissolved into diethyl ether and cooled to -78 degrees C. Normal hexane solution of n-butyllithium is added. Dialkyl chlorosilane is added after 0.5-1 hour and stirred for 12-24 hours and heated up to room temperature to obtain thiophene compound of ethynyl trimethyl silane and dialkyl silane. The thiophene compound of ethynyl trimethyl silane and dialkyl silane with potassium carbonate is dissolved into mixed solvent of methanol and tetrahydrofuran. Trimethyl silane is removed, and thiophene compound of ethyne and dialkyl silane is obtained. The thiophene compound of ethyne and dialkyl silane is dissolved into tetrahydrofuran solution. Lithium-naphthalene is added and reacted for -10 minutes. The dissolved thiophene compound of ethyne and dialkyl silane is slowly dipped into ammonium chloride solution to obtain ammonium chloride solution and thiophene disilole compound (I). The small molecular thiophene disilole derivative of formula (II) involves adding the thiophene disilole and 2.1-2.2 weight parts of bromine into trichloromethane and stirring for 1-2 days. The thiophene disilole is rinsed by 10-15 weight percent of alkali solution, till power of Hydrogen value is 7. Organic phase is cooled, and thiophene disilole solid is obtained. The thiophene disilole solid is dissolved into 80-100 weight parts of diethyl ether at -78 to -35 degrees C. 2.1-2.2 weight of normal hexane solution of n-butyllithium having concentration of 1.6-2.5 mole/L is added and reacted for 0.5-1.5 hours. 2-3 weight parts of tributyl tin chloride is added and stirred for 7-24 hours. The organic phase is collected, and tributyl tin chloride substituted thiophene disilole is obtained. The tributyl tin chloride substituted thiophene disilole is added into 2-3 weight parts of bromine substituted aryl. 80-100 weight parts of methylbenzene and 1-5 weight parts of di(triphenyl phosphorus) palladium chloride are added, refluxed and stirred for 1-2 days, and cooled to room temperature. The reaction product is poured into 1000 parts of methanol to deposit normal hexane and chloroform by utilizing large amount of methanol and to extract crude product. The chloroform component is collected, condensed and dried to obtain pure solid product. The method for preparing polymer derivative of thiophene disilole formula (III) involves adding the thiophene disilole and 2.1-2.2 weight parts of bromine into trichloromethane and stirring for 1-2 days. The thiophene disilole is rinsed by 10-15 weight percent of alkali solution, till power of Hydrogen value is 7. Organic phase is cooled, and thiophene disilole solid is obtained. The thiophene disilole solid is dissolved into 80-100 weight parts of diethyl ether at -78 to -35 degrees C. 2.1-2.2 weight of normal hexane solution of n-butyllithium having concentration of 1.6-2.5 mole/L is added and reacted for 0.5-1.5 hours. 2-3 weight parts of tributyl tin chloride is added and stirred for 7-24 hours. The organic phase is collected, and tributyl tin chloride substituted thiophene disilole is obtained. The tributyl tin chloride substituted thiophene disilole is added into 2-3 weight parts of bromine substituted aryl. 80-100 weight parts of methylbenzene and 1-5 weight parts of di(triphenyl phosphorus) palladium chloride are added, refluxed and stirred for 1-2 days, and cooled to room temperature. Preferred Components: The alkali solution utilized in the method for preparing small molecular derivative of thiophene disilole (II) and the method for preparing polymer derivative of thiophene