Issue 5, 2008
From the journal:

Journal of Materials Chemistry

Controlled stabilisation of silicic acid below pH 9 using poly(1-vinylimidazole)

Vadim V. Annenkov,*a   Elena N. Danilovtseva,a   Yelena V. Likhoshway,a   Siddharth V. Patwardhanb  and  Carole C. Perry*b  

* Corresponding authors

a Limnological Institute of Siberian Branch of Russian Academy of Sciences, 3, Ulan-Batorskaya St., P.O. Box 4199, Irkutsk, Russia
E-mail: annenkov@lin.irk.ru

b Biomolecular and Materials Interface Research Group, School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton Lane, Nottingham, UK
E-mail: Carole.Perry@ntu.ac.uk

Abstract

We show, for the first time, inhibition of silicic acid condensation over a wide range of pH, especially below 9 using certain molecular mass fractions of poly(1-vinylimidazole) (PVI). This is achieved by stabilisation of molybdate-active Si species, which are crucial to condensation and growth to form silica. The structure of the resulting composites depends on the molecular mass of the PVI chains. Long-chain macromolecules can “encapsulate” Si species giving rise to stable soluble complexes. Short PVI chains stimulate association of silica particles and at neutral pH precipitation occurs. Protonation of imidazole units in acidic pH results in dissolution of the precipitates. We believe that the results presented herein using PVI as a model system will help elucidate the mechanisms underpinning the molecular interactions between (bio)macromolecules and inorganic materials.

Graphical abstract: Controlled stabilisation of silicic acid below pH 9 using poly(1-vinylimidazole)

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/B716367N
Article type
Paper
Submitted
23 Oct 2007
Accepted
22 Nov 2007
First published
04 Dec 2007

J. Mater. Chem., 2008,18, 553-559

Permissions

Request permissions

Controlled stabilisation of silicic acid below pH 9 using poly(1-vinylimidazole)

V. V. Annenkov, E. N. Danilovtseva, Y. V. Likhoshway, S. V. Patwardhan and C. C. Perry, J. Mater. Chem., 2008, 18, 553 DOI: 10.1039/B716367N

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements