TY - JOUR
T1 - Hybrid organic-inorganic membranes from size exclusion deposition of fluorescent, octylene-bridged polysilsesquioxane particles
AU - Li, Zhe
AU - Tolbert, Stephanie H.
AU - Loy, Douglas A.
N1 - Funding Information:
Supplementary information containing additional plots of particle growth, UV-visible absorption and fluorescence spectra, atomic force micrographs, and confocal images are available electronically. This project was supported by Energy Materials Corporation and The University of Arizona . We would like to thank the W.M. Keck Center for Surface and Interface Imaging (KECK) at The University of Arizona for providing confocal fluorescence microscopy help and access to AFM. We are also grateful to University Spectroscopy and Imaging Facilities (USIF) for SEM imaging assistance.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - Hybrid organic-inorganic membranes were prepared by size exclusion deposition of fluorescent, octylene-bridged polysilsesquioxanes (OBP) nanoparticles onto ceramic membrane supports. Acid-catalyzed, sol-gel polymerization of 1,8-bis(triethoxysilyl)octane (BESO) was shown by dynamic light and scattering electron microscopy to afford spherical nanoparticles that, after 3-4 weeks, were sufficiently large enough to block the pores in porous, ceramic membranes with a 1.5 nm cut-off. The OBP particles were deposited by drawing a low concentration sol through the ceramic membrane. The OBP particles blocked the pores with an intractable, tightly packed layer 3 μm in thickness. The efficacy of size exclusion deposition was verified by incorporation of small amounts of a fluorescent, dansyl co-monomer into the particles and inspection of the membrane cross section by confocal fluorescence microscopy.
AB - Hybrid organic-inorganic membranes were prepared by size exclusion deposition of fluorescent, octylene-bridged polysilsesquioxanes (OBP) nanoparticles onto ceramic membrane supports. Acid-catalyzed, sol-gel polymerization of 1,8-bis(triethoxysilyl)octane (BESO) was shown by dynamic light and scattering electron microscopy to afford spherical nanoparticles that, after 3-4 weeks, were sufficiently large enough to block the pores in porous, ceramic membranes with a 1.5 nm cut-off. The OBP particles were deposited by drawing a low concentration sol through the ceramic membrane. The OBP particles blocked the pores with an intractable, tightly packed layer 3 μm in thickness. The efficacy of size exclusion deposition was verified by incorporation of small amounts of a fluorescent, dansyl co-monomer into the particles and inspection of the membrane cross section by confocal fluorescence microscopy.
KW - Dansyl monomer
KW - Membrane
KW - Nanoparticles
KW - Octylene-bridged polysilsesquioxanes
KW - Size exclusion deposition
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U2 - 10.1016/j.jnoncrysol.2014.07.002
DO - 10.1016/j.jnoncrysol.2014.07.002
M3 - Article
AN - SCOPUS:84905390945
VL - 403
SP - 88
EP - 96
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
ER -