The　fluorescent　pH-responsive　mesoporous　silica　nanoparticles　(P@BMMs)　were　prepared,　in　which,　the　(2-[3-(triethoxysilyl)　propyl]-1H-Benz　[de]isoquinoline-1,　3(2H)-dione)　-　poly(acrylic　acid)　(PID-PAA)　shell　was　covalently　anchored　onto　the　vinyl-modified　surface　of　the　bimodal　mesoporous　materials　(BMMs)　core　via　one-step　or　two-step　process.　Their　structural　features　were　analyzed　by　XRD,　SEM,　TEM,　TG,　and　SAXS,　and　the　results　showed　that　P@BMMs　possessed　typical　fractal　features　from　structural　irregularity　to　surface　roughness.　Ibuprofen　as　a　model　drug　was　loaded　into　the　mesopore　channels　of　BMMs　cores,　particularly,　the　drug-releasing　performances　from　P@BMMs　carriers　were　pH-dependent.　Meanwhile,　the　photoluminescent　emission　spectra　and　the　fluorescent　decay　profiles　presented　that　the　hybrid　P@BMMs　with　strong　fluorescent　intensity　at　395　nm　and　450　nm　and　longer　decay　lifetimes　(such　as　3.53　and　18.86　ns　for　P@BMMs-I-10)　is　a　promising　drug　carrier,　which　can　be　used　in　potential　applications　for　controlled　drug　delivery.