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Article
Isoflavone aglycons-sulfobutyl ether-β-cyclodextrin inclusion complexes: in solution and solid state studies
The effect of a polyanionic variably substituted sulfobutyl ether-β-cyclodextrin (SBE-β-CyD), complexation on the UV absorption of genistein (Gen) and daidzein (Dai) was studied in pure water. A phase solubili...
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Article
Gel-sol evolution of cyclodextrin-based nanosponges: role of the macrocycle size
The effect of the macrocycle size on the gel-to-sol evolution of cyclodextrin-based hydrogel is here investigated by using Fourier transform infrared absorption in attenuated total reflectance geometry (FTIR-A...
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Article
Hydrogen-bond dynamics of water confined in cyclodextrin nanosponges hydrogel
Cyclodextrin nanosponges (CDNS) are a very promising class of cross-linked polymers, made up of cyclodextrins. CDNS swollen in aqueous solution give rise to cyclodextrin-based hydrogel in different states—gel ...
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Article
Phase solubility and FTIR-ATR studies of idebenone/sulfobutyl ether β-cyclodextrin inclusion complex
The favourable accessibility offered by sulfobutyl ether β-cyclodextrin (SBE-β-CD) for the complexation with idebenone (IDE) has been probed, as a function of temperature, in liquid state, by phase solubility ...
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Article
Vibrational dynamics and hydrogen bond properties of β-CD nanosponges: an FTIR-ATR, Raman and solid-state NMR spectroscopic study
Cyclodextrin nanosponges (CDNS) are cross-linked polymers with remarkable inclusion/release properties. CDNS show swelling capability and a hydrophilicity/hydrophobicity balance that can be dramatically modifi...
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Article
Non-destructive identification of green and yellow pigments: the case of some Sicilian Renaissance glazed pottery
Selected decorated Renaissance ceramic fragments, found during the excavation of a Sicilian archaeological site (Caltagirone, Sicily, South Italy), have been studied by combining scanning electron microscopy (...
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Article
Characterization of blue decorated Renaissance pottery fragments from Caltagirone (Sicily, Italy)
Renaissance blue decorated pottery fragments from the archaeological site of Caltagirone (Sicily, Italy) were analysed by scanning electron microscopy – energy dispersive X-ray spectrometry (SEM/EDS). The samp...
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Article
Characterisation and differentiation of pigments employed on the façade of “Noto’s Valley” monuments (Sicily)
Most of the “Noto’s Valley” monuments façades, located in different towns of Sicily such as Ragusa Ibla, Modica and Noto, present different colours and in many cases the towns themselves are characterized by e...
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Article
Raman spectroscopy: Probing dynamics of water molecules confined in nanoporous silica glasses
In order to explore the influence of nanoscopic confinement on the vibrational properties of H-bonded liquids, we performed a detailed Raman scattering study, as a function of temperature, on water confined in...
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Article
A FT-IR absorption analysis of vibrational properties of water encaged in NaA zeolites: evidence of a “structure maker” role of zeolitic surface
We performed, in the O-H stretching region, Fourier-transform Infrared (FT-IR) Absorption measurements for investigating the vibrational dynamics on water confined in NaA zeolite, vs. temperature and for differen...
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Chapter and Conference Paper
Spectroscopic Techniques for The Investigation of Sicilian Cultural Heritage: Two Different Applications
The present work shows the application of different spectroscopic techniques, already widely tested and daily used in the research on molecular structure, to the study of problems of artistic and archaeologica...
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Article
Low-frequency dynamical response of confined water in normal and supercooled regions obtained by IINS
We analyzed incoherent inelastic neutron scattering spectra of water confined in a nanoporous Gelsil matrix, with very small pore diameter (26 Å). The study is addressed to the evolution of the one-phonon ampl...
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Article
Nature of depolarized quasi-elastic light scattering in associated and non-associated liquids
An analysis of Rayleigh-wing spectra on two isomers of propanol (C3H7OH) and on two of their Br-based isomorphous systems (C3H7Br) is presented. The performed measurements, over a wide temperature range, allow us...
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Article
Neutron scattering and compressibility measurements for the study of hydration effects on polymeric aqueous solutions
The present paper reports the results of compressibility and incoherent quasi-elastic neutron scattering measurements performed on polymeric systems and on their aqueous solutions. From the compressibility dat...
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Chapter and Conference Paper
Dynamics of water in nonionic amphiphile systems: raman scattering
The structure of water in aqueous solutions of polyoxyethylene nonionic amphiphiles C10E5 is studied by Raman scattering along an isothermal path crossing the isotropic one-phase region from 0 to 1 amphiphile vol...
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Chapter and Conference Paper
Evidence by light scattering of long-range structures connected with the percolation transition in water-decane-AOT microemulsions
We report extensive light-scattering measurements (elastic, quasielastic, and Brillouin) performed in dense micellar or microemulsion systems. The overall analysis of the data, in terms of a static effective-m...
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Chapter and Conference Paper
Dynamical properties of lecithin-based microemulsions
Lecithin/isooctane/water gel is investigated by means of different experimental techniques, namely, depolarized light scattering, ultrasonic and dielectric measurements. Pure isooctane and lecithin/isooctane s...
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Article
EXAFS and Raman studies of ion-ion and ion-water interactions in strong II-I electrolytic solutions
EXAFS and Raman scattering data in ZnCl2 aqueous solutions and in their mixture with LiCl, CaCl2 and SrCl2 are presented. The measurements, carried out at the PULS facility on the Zn and CaK-edges, allow us to de...
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Article
Study of the glass transition region in amorphous selenium by EXAFS
EXAFS spectra of amorphous bulk selenium and Se80Te20 alloy have been analysed in the temperature range of the glass transition region (−15 to 37°C). α-Se shows an unexpected behaviour because the modulated part ...
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Article
Local coordination and dynamics in liquid antimony trichloride/water mixture
EXAFS Rayleigh wing and Raman-scattering data in SbCl3/H2O mixture are presented. The measurements, carried out at the PULS facility on the ClK-edge and on theL I, II, III-edges as a function of t...