{"title":"Size discrimination of colloidal nanoparticles by thiol-functionalized MCM-41 mesoporous molecular sieves","authors":"Priyabrata Mukherjee, M. Sastry, R. Kumar","doi":"10.1039/B002419H","DOIUrl":null,"url":null,"abstract":"Thiol-functionalized MCM-41 mesoporous materials with a well-defined pore size of 40 A may be used to discriminate between colloidal gold and silver particles in a mixture. More specifically, the thiol-functionalized MCM-41 material selectively entraps colloidal gold particles (size 35 A) in the pores from a mixture of the gold and silver particles of size 70 A. The gold particles are held in the matrix via thiolate linkages and this process has been studied using UV-vis spectroscopy and thermogravimetry/differential thermal analysis. This approach is promising for application in bioseparation methodologies as well as in the generation of one-dimensional superstructure assemblies","PeriodicalId":20106,"journal":{"name":"PhysChemComm","volume":"84 1","pages":"15-17"},"PeriodicalIF":0.0000,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"PhysChemComm","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1039/B002419H","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
Thiol-functionalized MCM-41 mesoporous materials with a well-defined pore size of 40 A may be used to discriminate between colloidal gold and silver particles in a mixture. More specifically, the thiol-functionalized MCM-41 material selectively entraps colloidal gold particles (size 35 A) in the pores from a mixture of the gold and silver particles of size 70 A. The gold particles are held in the matrix via thiolate linkages and this process has been studied using UV-vis spectroscopy and thermogravimetry/differential thermal analysis. This approach is promising for application in bioseparation methodologies as well as in the generation of one-dimensional superstructure assemblies
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