TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): The pentacene is prepared by (A) reacting ketone compound and biphenyl containing compound, reacting the mixture in toluene at 200 degrees C to obtain pentacene precursor, treating pentacene precursor with dichloro dicyano quinone (DDQ) and toluene to obtain a second pentacene precursor, reacting the second pentacene precursor was reacted with meta-chloro-perbenzoic acid (m-CPBA) and sodium bicarbonate and then in p-toluene sulfonic acid at 80 degrees C to obtain a third pentacene precursor, reacting the third pentacene precursor is reacted again with p-toluene sulfonic acid at 80 degrees C to obtain pentacene compound; or (B) reacting diketone compound with 2-propylene indonaphthalene in the presence of trichloromethyl and triethyl amine to obtain anthracene containing compound, reacting anthracene containing compound with 2-propylene indonaphthalene, trichloromethyl, and 1,5-diazabicyclo(4.3.0)non-5-ene (DBN) to obtain pentacene precursor, reacting pentacene precursor with sodium borohydride, and methanol to obtain a second pentacene precursor, reacting the second pentacene precursor with trifluoromethanesulfonic anhydride, triethyl amine, or dichloro-bis(triphenylphosphine)palladium, formic acid, tributyl amine, and dimethyl formamide at 100 degrees C for 72 hours to obtain a third pentacene precursor, reacting third pentacene precursor with ozone and dimethyl sulfide to obtain pentacene compound. Preferred Methods: The applying step comprises spin-coating to form a film.The method includes masking portion(s) of the film before expelling volatile units of carbon monoxide or carbon dioxide from film by photochemically treating the film, removing the mask, and washing the film with solvent after photochemically treating the film.Preferred Components: The composition includes organic solvent(s). Preferred Definitions:    R1-R4 = H, Me, Cl, F, CN, or OCH3;    R7-R9 = H, F;    R9 = trimethyl silyl alkynyl group;and    two, preferably three or more of X1-X5 = carbonyl bridge.    SPECIFIC COMPOUNDS - 5 Pentacene derivative are specifically claimed, i.e. 1,4-dihydro-1,4-oxomethylene-bridged pentacene; 5,14-dihydro-5,14-oxomethylene-bridged pentacene; 5,7,12,14-tetrahydro-5,14:7,12-di(oxomethylene-bridged)pentacene; 1,4,8,11-tetrahydro-1,4:8,11-di(oxomethylene-bridged)pentacene; or 1,4,6,8,11,13-hexahydro-1,4:6,13:8,11-tri(oxomethylene-bridged) pentacene.    EXAMPLE - No suitable example given.