Liang Hai-ChunRong MinzhiZhang Ming-qiuHanmin Zeng中山大学教育部聚合物复合材料及功能材料重点实验室,广州510275
Silvernanoparticleswithdifferentdiametersweresynthesizedbymicroemulsionmethod ,inwhichtheeffectoftolueneorcyclohexaneasanoilphaseontheparticlesizeanditsdistributionwasdetected .Silvernanoparticleswerenear spherical,bothmulticrystalsandtwinswereobserved.Latticedeformationsexistedindifferentdegreesbecausetheinterplanarspacedwasincreased.Thefluorescencespectrafordifferentsizesilvernanoparticlesdispersedinorganicsolventsweremeasured.Therearethreeemissionpeaksforsilvernanoparticles chloroformsystems,whilenofluorescenceemissionwasfoundwhensilvernanoparticlesdispersedintoluene .Thefluorescenceintensityvarieswithparticlesizeofthesilvernanoparticles,whichoriginatesfromAg2 ,Ag3 clustersonthesilverparticlesurfaceproducedbytheinteractionbetweensilverandchloroformunderUVradiation .Thereactivityandthenumberofsurfacereactivecentersvarywithsilverparticlesize,resultinginthedifferentfluorescencephenomena.
吴春芳 Wu Chunfang潘浩 Pan Hao朱业传 Zhu Yechuan