Synthesis and Characterization of High Refractive Index MT Siloxane Oligomers

A high refractive index alkoxysilane n D 2 5 = 1.512 , N -3-(trimethoxysilylpropyl)-phthalimide, was successfully synthesized by the substitution reaction of phthalimide potassium and γ-chloropropyltrimethoxysilane and characterized by GC, FT-IR, 1 H-NMR and 13 C-NMR. MT siloxane oligomers, which re...

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Bibliographic Details
Published in:Journal of inorganic and organometallic polymers and materials 2014-07, Vol.24 (4), p.780-785
Main Authors: Cai, Haitao, Zhang, Liping, Xiong, Ying, Qu, Qiongli, Tang, Hongding
Format: Article
Language:English
Subjects:
Adjustment
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Oligomers
Organic Chemistry
Organometallic polymers
Phthalimides
Polymer Sciences
Refractive index
Refractivity
Siloxanes
Synthesis
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Summary:A high refractive index alkoxysilane n D 2 5 = 1.512 , N -3-(trimethoxysilylpropyl)-phthalimide, was successfully synthesized by the substitution reaction of phthalimide potassium and γ-chloropropyltrimethoxysilane and characterized by GC, FT-IR, 1 H-NMR and 13 C-NMR. MT siloxane oligomers, which represent a broad range of hydrolytic condensation products of monofunctionalsilane (M) and trifunctionalsilane (T), were prepared by the reaction of the N -3-(trimethoxysilylpropyl)-phthalimide with hexamethyldisiloxane (MM) or divinyltetramethyldisiloxane (M Vi M Vi ) in the presence of HCl. The prepared MT siloxane oligomers were also characterized by 1 H-NMR, 13 C-NMR, FT-IR and GPC. All the obtained colorless and transparent oligomers have higher refractive indexes, which can be adjusted to as high as 1.547 by simply varying the ratio of M and T units in the oligomers such as for the M Vi T R siloxane oligomer.
ISSN:1574-1443
1574-1451
DOI:10.1007/s10904-014-0039-7