Journal
LANGMUIR
Volume 26, Issue 9, Pages 6177-6183Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la1005067
Keywords
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Funding
- PON SAPAB
- Dipartimento di Progettazione Molecolare of CNR
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New gemini surfactants (GSs) constituted by two double alkyl chain (from 7 to 17 methylenic units) N-oxide monovalent surfactants joined by a PEG spacer of different length (from 3 to 21 ethylene glycol units), thus combining the properties of both N-oxide and GS surfactants, were synthetized and characterized. The different hydrophilic/hydrophobic balance of the molecular structure strongly influences the morphology and the electrical features of the aggregates. Despite the zwitterionic nature of the polar head groups, all the aggregates are characterized by positive potential thus suggesting protonation at the interface; however, the extent of protonation was shown to strongly depend on the length of the alkyl chain and of the spacer.
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