TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The aromatic imide compound is of formula (I). (I) exhibits higher absorption coefficient at 365 nm than that at 400-440 nm.R11 = 1-7C aliphatic group or 6-18C aromatic group (all optionally substituted by halo);R12 = 1-10C aliphatic group or 6-18C aromatic group (all optionally substituted and optionally containing hetero atoms) or halo; andp = 0-3, preferably greater than or equal to 1, where if p is greater than or equal to 2, then greater than or equal to R12 can be linked together to form a cyclic structure.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The composition comprises 0.001-10 pts. wt. aromatic imide compound, based on 100 pts. wt. polysiloxane. The composition further comprises an additive consisting of adhesion enhancer, polymerization inhibitor, antifoaming agent, surfactant, silane coupling agent, stabilizer or photosensitizer. Preferred Components: The polysiloxane comprises first polysiloxane whose film after pre-baking has dissolution velocity of less than or equal to 3000 Angstrom /s in 5 wt.% tetramethylammonium hydroxide aqueous solution; and polysiloxane whose film after pre-baking has dissolution velocity of greater than or equal to 150 Angstrom /s in 2.38 wt.% tetramethylammonium hydroxide aqueous solution. Preferred Method: The film forming method further comprises solidifying the film by heating after the development. EXAMPLE - 1 wt.% 6-(Phenylethynyl)-2-(((trifluoromethyl)sulfonyl)oxy)-1H-benzo(de)isoquinoline-1,3(2H)-dione was added into 35% propylene glycol methyl ether acetate solution of 30%:70% wt./wt. mixture of polysiloxane I with average weight molecular weight (polystyrene equivalent) of 2700 (prepared by mixing 36.5 g 25 wt% tetramethylammonium hydroxide aqueous solution, 800 ml isopropyl alcohol and 2 g water, maintaining at 10 degrees C, adding mixed solution of 39.7 g phenyltrimethoxysilane, 34.1 g methyltrimethoxysilane and 7.6 g tetramethoxysilane, stirring and reacting for 2 hours at 10 degrees C and working up) and polysiloxane II (prepared by mixing 54.7 g 25 wt% tetramethylammonium hydroxide aqueous solution, 800 ml isopropyl alcohol and 2 g water, maintaining at 10 degrees C, adding mixed solution of 39.7 g phenyltrimethoxysilane, 34.1 g methyltrimethoxysilane and 7.6 g tetramethoxysilane at 0-3 degrees C, stirring and reacting for 2 hours at less than 5 degrees C and working up) and then 0.3 wt.% KF-53 (RTM: surfactant) was added to the obtained mixture to obtain the composition.