Silanol-Based Surfactants: Synthetic Access and Properties of an Innovative Class of Environmentally Benign Detergents

Herein, environmentally friendly surfactants based on new silanols as substitutes for the isoelectronic phosphonates were explored. Surface tensions of aqueous solutions are significantly reduced, particularly with those silanols that feature a high ratio of organic moiety to silanol. Besides their...

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Bibliographic Details
Published in:Chemistry : a European journal 2014-07, Vol.20 (30), p.9330-9335
Main Authors: Hurkes, Natascha, Ehmann, Heike M. A., List, Martina, Spirk, Stefan, Bussiek, Malte, Belaj, Ferdinand, Pietschnig, Rudolf
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemistry
Detergents
Double layer
Glass
Glass substrates
main-group elements
metalation
Oxides
Phosphonates
Sand
silanes
supramolecular chemistry
Surfactants
sustainable chemistry
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Summary:Herein, environmentally friendly surfactants based on new silanols as substitutes for the isoelectronic phosphonates were explored. Surface tensions of aqueous solutions are significantly reduced, particularly with those silanols that feature a high ratio of organic moiety to silanol. Besides their use as surfactants, their potential as coating agents for hydrophilic oxide surfaces was investigated for the example of glass substrates. In the solid‐state sheet structures with silanol, double layers are present, in which the sheet spacing varies with the alkyl‐chain length. Soap from sand? A synthetic entry to surfactants based on stable silanols, which provide beneficial properties comparable to established detergents without sharing their eutrophicating potential, was established (see figure).
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201402857