In　order　to　enhance　the　intensity　of　luminescent　hybrid　bimodal　mesoporous　silica　(LHMS),　the　rare　earth　Eu3+　ion　was　employed　as　an　enhancer　to　modify　1,8-naphthalic　anhydride　(NA)　molecules.　The　modified　LHMS　were　prepared　with　various　anions　of　europium　salts　including　Cl-,　NO3-,　and　CH3COO-.　The　structure　and　photoluminescence　properties　of　the　obtained　samples　were　characterized　by　XRD,　TEM,　N-2-adsorption/desorption,　FT-IR,　TGA,　ICP-OES,　and　PL　measurements.　The　results　showed　that　the　bimodal　mesoporous　system　of　BMMs　could　be　preserved　after　functionalization　via　grafted　Eu3+-modified　NA　molecules　onto　mesoporous　matrix.　However,　the　structure　parameters　and　textural　properties　of　resultant　LHMS　series　were　obviously　influenced　by　the　anions　volume.　Meanwhile,　the　luminescent　performances　of　LHMS　series　were　seriously　impacted　by　both　of　the　binding　force　between　Eu3+　and　various　anions　and　steric　hindrance　of　the　anions,　resulting　in　the　intensity　of　emission　peak　of　obtained　LHMS　series　declining　as　following　order:　LHMS-EN　(NO3-)　＞　LHMS-EA　(CH3COO-)　＞　LHMS-EC　(Cl-).　Finally,　the　related　mechanism　was　discussed　in-depth.　(C)　2014　Elsevier　B.V.　All　rights　reserved.