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Updated: Apr 22, 2026

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
Published on: August 13, 2019
Probing cavitand-organosilane hybrid bilayers via sum-frequency vibrational spectroscopy
A Aprile1, P Pagliusi, F Ciuchi
1Dipartimento di Fisica and ‡Licryl Laboratory, CNR-IPCF UOS di Cosenza, Universitá della Calabria , Ponte Pietro Bucci 33B, 87036 Arcavacata di Rende Cosenza, Italy.
Abstract:
Quinoxaline cavitands (QxCav) are transferred by Langmuir-Schaefer method on self-assembled monolayers (SAMs) of octadecyltrichlorosilane (OTS) and N,N-dimethyl-N-octadecyl-3-aminopropyltrimethoxysilyl chloride (DMOAP) on fused silica substrates. The molecular architectures of both the hydrophobic SAMs templates and the hybrid cavitand-organosilanes bilayers at the solid-air interface are investigated and correlated by sum-frequency vibrational spectroscopy. The results show that QxCav are always in the closed vase configuration and orient with their principal axis normal to the substrates. The role of the alkyl chains density in the SAM templates on the QxCav transfer ratio is pointed out.
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