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    Highly Aminated Mesoporous Silica Nanoparticles with Cubic Pore Structure

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    Type
    Article
    Authors
    Suteewong, Teeraporn
    Sai, Hiroaki
    Cohen, Roy
    Wang, Suntao
    Bradbury, Michelle
    Baird, Barbara
    Gruner, Sol M.
    Wiesner, Ulrich
    Date
    2011-01-19
    Permanent link to this record
    http://hdl.handle.net/10754/598498
    
    Metadata
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    Abstract
    Mesoporous silica with cubic symmetry has attracted interest from researchers for some time. Here, we present the room temperature synthesis of mesoporous silica nanoparticles possessing cubic Pm3n symmetry with very high molar ratios (>50%) of 3-aminopropyl triethoxysilane. The synthesis is robust allowing, for example, co-condensation of organic dyes without loss of structure. By means of pore expander molecules, the pore size can be enlarged from 2.7 to 5 nm, while particle size decreases. Adding pore expander and co-condensing fluorescent dyes in the same synthesis reduces average particle size further down to 100 nm. After PEGylation, such fluorescent aminated mesoporous silica nanoparticles are spontaneously taken up by cells as demonstrated by fluorescence microscopy.
    Citation
    Suteewong T, Sai H, Cohen R, Wang S, Bradbury M, et al. (2011) Highly Aminated Mesoporous Silica Nanoparticles with Cubic Pore Structure. Journal of the American Chemical Society 133: 172–175. Available: http://dx.doi.org/10.1021/ja1061664.
    Sponsors
    This work was supported by the Cornell Center for Materials Research (CCMR) with funding from a PREM program at Norfolk State University through the National Science Foundation (NSF) grant (DMR-0611430), by the Department of Energy grant DE-FG02-97ER62443 and by the National Institute of Dental and Craniofacial Research (R21DE018335). We thank the Cornell Universiy KAUST Center for Research and Education for financial support. This work was further supported by the U.S. Department of Homeland Security under Cooperative Agreement Number "2009-ST-108-LR0004". The authors thank CCMR for facility support. This work is based upon research conducted at the Cornell High Energy Synchrotron Source (CHESS), which is supported by the NSF and the National Institutes of Health/National Institute of General Medical Sciences under NSF award DMR-0225180. T.S. is grateful for a Thai Government Scholarship tinder the Ministry of Science and Technology.
    Publisher
    American Chemical Society (ACS)
    Journal
    Journal of the American Chemical Society
    DOI
    10.1021/ja1061664
    PubMed ID
    21158438
    PubMed Central ID
    PMC3084371
    ae974a485f413a2113503eed53cd6c53
    10.1021/ja1061664
    Scopus Count
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