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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- Chiral sol-gels
- Optical rotation
- Sol-gel precursors