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The encapsulation of a rare earth (RE) complex Eu(DBM)3phen in modified Si-MCM-41 with 3-aminopropyltriethoxysilane is reported for the first time.The luminescence intensity of the RE complex in the modified Si-MCM-41 is about 9 times as strong as in unmodified Si-MCM-41 and the luminescence of the RE complex in the modified Si-MCM-41 has good color purity.