Developing　effective　intelligent　nanocarriers　is　highly　desirable　for　fluorescence　imaging　and　therapeutic　applications　but　remains　challenging.　Using　a　vinyl-grafted　BMMs　(bimodal　mesoporous　SiO2　materials)　as　a　core　and　PAN　((2-aminoethyl)-6-(dimethylamino)-1H-benzo[de]isoquinoline-1,3(2H)-dione))-dispersed　dual　pH/thermal-sensitive　poly(N-isopropylacrylamide-co-acrylic　acid)　as　a　shell,　PAN@BMMs　with　strong　fluorescence　and　good　dispersibility　were　prepared.　Their　mesoporous　features　and　physicochemical　properties　were　extensively　characterized　via　XRD　patterns,　N-2　adsorption-desorption　analysis,　SEM/TEM　images,　TGA　profiles,　and　FT-IR　spectra.　In　particular,　their　mass　fractal　dimension　(d(m))　features　based　on　SAXS　patterns　combined　with　fluorescence　spectra　were　successfully　obtained　to　evaluate　the　uniformity　of　the　fluorescence　dispersions,　showing　that　the　d(m)　values　increased　from　2.49　to　2.70　with　an　increase　of　the　AN-additive　amount　from　0.05　to　1%,　along　with　the　red　shifting　of　their　fluorescent　emission　wavelength　from　471　to　488　nm.　The　composite　(PAN@BMMs-I-0.1)　presented　a　densification　trend　and　a　slight　decrease　in　peak　(490　nm)　intensity　during　the　shrinking　process.　Its　fluorescent　decay　profiles　confirmed　two　fluorescence　lifetimes　of　3.59　and　10.62　ns.　The　low　cytotoxicity　obtained　via　in　vitro　cell　survival　assay　and　the　efficient　green　imaging　performed　via　HeLa　cell　internalization　suggested　that　the　smart　PAN@BMM　composites　are　potential　carriers　for　in　vivo　imaging　and　therapy.