Abstract: Provided is a bridged organosilane, which has a large complex organic group, and which is useful in the synthesis of a mesoporous silica and a light-emitting material, and a production method of the bridged organosilane. The bridged organosilane is expressed by the following general formula (1): [in the formula (1), q represents an integer in a range from 2 to 4, X1— represents a substituent selected from the group consisting of substituents expressed by the following general formulae (2) to (5): (in the formulae (2) to (5), R1 represents alkyl group having 1 to 5 carbon atoms, R2 represents an allyl group, and n represents an integer in a range from 0 to 3, and m represents an integer in a range from 0 to 6), and A1 represents an organic group expressed by, for example, the following general formula (6): (in the formula (6), Y1< represents a substituent expressed by, for example, O?C<)].

Abstract: A luminescent material composed of the polymer of the organic silicon compound represented by the following general formula (1): Chemical Formula 1 [where X is an organic molecule which emits fluorescence or phosphorescence; R1 is a lower alkoxy group, a hydroxyl group, an allyl group, an ester group, or halogen atoms; R2 is a lower alkyl group or a hydrogen atom; n is an integer of 1 to 3; and m is an integer of 1 to 4].