A surface-modified inorganic material and a preparation method thereof. A
surface-modified inorganic material is provided which is obtained by
allowing an organosilane compound having allyl or an allyl derivative to
react with an inorganic material, particularly solid silica or ITO glass,
in the presence of an acid and an organic solvent, to introduce an
organic group into the inorganic material even at room temperature, as
well as a preparation method thereof. The invention can effectively
introduce the organic group into the inorganic material even at room
temperature, and thus is very effective in introducing compounds having a
thermally sensitive functional group, for example, natural compounds or
proteins. It is possible to introduce various organic groups into an
inorganic material and to separate and purify organic molecule-bonded
organosilane compounds using a silica gel column to effectively bond them
to inorganic materials. Accordingly, the invention is very useful in the
chemical industry.