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


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.


  • 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.


Chiral sol-gels Optical rotation Kinetics Sol-gel precursors 



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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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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