Structural Investigation of Ormosils with Potential as Host Photonic Materials |
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Authors: | Ou DL Seddon AB |
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Institution: | (1) The Centre for Glass Research, Department of Engineering Materials, The University of Sheffield, S1 3JD Sheffield, UK |
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Abstract: | Class II ormosils in the systems: methyl, propyl, vinyl and phenyl silicates have been structurally investigated for their
suitability as photonic materials and this paper is a precis of many data. From visible and near-infrared spectroscopy these
ormosils have: (i) intrinsic optical windows in the visible and at 1.06, 1.3 and 1.55 μm and (ii) low residual water, despite
being synthesised at only 60°C. The residual water can be expelled under vacuum. Solid state29Si nuclear magnetic resonance spectroscopy shows that matrix condensation increases as the organic content of the matrix is
increased; this is accompanied by a decrease in BET surface area. |
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Keywords: | ormosils photonic materials IR spectroscopy solid state NMR spectroscopy BET surface area |
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