Optical rotation kinetics study of the polycondensation of chiral sol-gel precursors

Orit Cohen; Dmitri Gelman; David Avnir

doi:10.1007/s10971-018-4858-9

Optical rotation kinetics study of the polycondensation of chiral sol-gel precursors

Orit Cohen, Dmitri Gelman^*, David Avnir

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We show that the polycondensation of chiral sol-gel precursors can be efficiently followed up by optical rotation measurements. Three silanes were studied, namely, the hexaethoxysilane derivatives of l-threonine, l-isoleucine, and dimethyl-l-tartrate. Two main sol-gel polycondensation mechanisms were identified, namely, linear kinetics product growth and second-order cluster–cluster growth. Dynamic light scattering measurements are used to support the proposed mechanisms. [Figure not available: see fulltext.].

Original language	English
Pages (from-to)	149-154
Number of pages	6
Journal	Journal of Sol-Gel Science and Technology
Volume	90
Issue number	1
DOIs	https://doi.org/10.1007/s10971-018-4858-9
State	Published - 15 Apr 2019

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Publisher Copyright:
© 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Keywords

Chiral sol-gels
Kinetics
Optical rotation
Sol-gel precursors

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abstract = "We show that the polycondensation of chiral sol-gel precursors can be efficiently followed up by optical rotation measurements. Three silanes were studied, namely, the hexaethoxysilane derivatives of l-threonine, l-isoleucine, and dimethyl-l-tartrate. Two main sol-gel polycondensation mechanisms were identified, namely, linear kinetics product growth and second-order cluster–cluster growth. Dynamic light scattering measurements are used to support the proposed mechanisms. [Figure not available: see fulltext.].",

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AU - Gelman, Dmitri

AU - Avnir, David

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N2 - We show that the polycondensation of chiral sol-gel precursors can be efficiently followed up by optical rotation measurements. Three silanes were studied, namely, the hexaethoxysilane derivatives of l-threonine, l-isoleucine, and dimethyl-l-tartrate. Two main sol-gel polycondensation mechanisms were identified, namely, linear kinetics product growth and second-order cluster–cluster growth. Dynamic light scattering measurements are used to support the proposed mechanisms. [Figure not available: see fulltext.].

AB - We show that the polycondensation of chiral sol-gel precursors can be efficiently followed up by optical rotation measurements. Three silanes were studied, namely, the hexaethoxysilane derivatives of l-threonine, l-isoleucine, and dimethyl-l-tartrate. Two main sol-gel polycondensation mechanisms were identified, namely, linear kinetics product growth and second-order cluster–cluster growth. Dynamic light scattering measurements are used to support the proposed mechanisms. [Figure not available: see fulltext.].

KW - Chiral sol-gels

KW - Kinetics

KW - Optical rotation

KW - Sol-gel precursors

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Optical rotation kinetics study of the polycondensation of chiral sol-gel precursors

Abstract

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Keywords

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