Composition for preparing polyimide-inorganic particle composite, article prepared therefrom, and optical device comprising same

A composition for preparing a polyimide-inorganic particle composite, comprising:

• a tetracarboxylic acid dianhydride represented by Chemical Formula 1,
• a diamine represented by Chemical Formula 2, and
• an inorganic particle comprising an amino group on its surface:
• wherein in Chemical Formula 1 and Chemical Formula 2,
• R1 and R2 are the same or different, and are each independently a substituted or unsubstituted C4 to C30 alicyclic organic group, or a substituted or unsubstituted C6 to C30 aromatic organic group, wherein the alicyclic or aromatic organic group comprises one ring, two or more rings fused together to provide a condensed ring system, or two or more rings linked through a single bond or through a functional group selected from a fluorenylene group, —O—, —S—, —C(═O)—, —CH(OH)—, —S(═O)2—, —Si(CH3)2—, —(CH2)p— wherein 1≦p≦10, —(CF2)q— wherein 1≦q≦10, —C(CnH2n+1)2—, —C(CnF2n+1)2—, wherein 1≦n≦10, —C(═O)NH—, a substituted or unsubstituted C3 to C10 cycloalkylene group, a substituted or unsubstituted C2 to C10 heterocycloalkylene group, a substituted or unsubstituted C6 to C15 arylene group, and a substituted or unsubstituted C3 to C15 heteroarylene group.