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Journal of Sol-Gel Science and Technology

, Volume 90, Issue 1, pp 149–154 | Cite as

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

  • Orit Cohen
  • Dmitri GelmanEmail author
  • David AvnirEmail author
Original Paper: Sol-gel, hybrids and solution chemistries

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.

Highlights

  • The polycondensation of chiral sol-gel precursors is efficiently followed up by optical rotation.

  • The chiral hexaethoxysilanes of L-threonine, L-isoleucine and dimethyl-L-tartrate, are studied.

  • Two sol-gel mechanisms were identified: linear-kinetics and second-order cluster-cluster growth.

Keywords

Chiral sol-gels Optical rotation Kinetics Sol-gel precursors 

Notes

Acknowledgements

We thank Prof. Edit Tshuva and Prof. Raed Abu-Reziq for fruitful discussions.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10971_2018_4858_MOESM1_ESM.docx (739 kb)
Supplementary Information

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute of ChemistryThe Hebrew University of JerusalemJerusalemIsrael
  2. 2.The HM Kruger Center for Nanoscience and NanotechnologyThe Hebrew University of JerusalemJerusalemIsrael

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