Investigations of methyl lactate in the presence of reverse micelles by vibrational spectroscopy and circular dichroism

Vincenzo Turco Liveri, Angela Monia Ruggirello, Roberto Gangemi, Sergio Abbate, Giovanna Longhi, France Lebon, Marco Passarello

Risultato della ricerca: Article

6 Citazioni (Scopus)

Abstract

The FT-IR and vibrational circular dichroism (VCD) spectra of (S)- and -(R)-methyl lactate have been recorded for neat samples and at various concentrations in CCl4 and DMSO solutions. These spectra are used to analyse the FT-IR and VCD spectra of methyl lactates in presence of sodium bis(2- ethylhexyl)sulfosuccinate (AOT) in CCl4, where the surfactant molecules are known to form reverse micelles. Some tendency of methyl lactate to interact with AOT micellar aggregates is observed, but not as well defined as previously observed for dimethyl tartrate in analogous circumstances. Besides, near infrared (NIR) absorption and VCD data have been obtained for most of the above systems, allowing to monitor the first overtone of the OH-stretching vibration of methyl lactates, especially in the spectroscopic region where the OH bond is not involved in hydrogen bond with other molecules. The NIR absorption and NIR VCD data for dilute solutions are reproduced and interpreted by anharmonic DFT calculations. Further understanding of the behavior of aggregated methyl lactate systems has been gained on this basis.
Lingua originaleEnglish
pagine (da-a)54-62
Numero di pagine9
RivistaVibrational Spectroscopy
Volume60
Stato di pubblicazionePublished - 2012

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Micelles
Dioctyl Sulfosuccinic Acid
Molecules
Infrared absorption
Dimethyl Sulfoxide
Discrete Fourier transforms
Surface-Active Agents
Stretching
Hydrogen bonds
methyl lactate
Infrared radiation
Circular Dichroism

All Science Journal Classification (ASJC) codes

  • Spectroscopy

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Investigations of methyl lactate in the presence of reverse micelles by vibrational spectroscopy and circular dichroism. / Turco Liveri, Vincenzo; Ruggirello, Angela Monia; Gangemi, Roberto; Abbate, Sergio; Longhi, Giovanna; Lebon, France; Passarello, Marco.

In: Vibrational Spectroscopy, Vol. 60, 2012, pag. 54-62.

Risultato della ricerca: Article

Turco Liveri, Vincenzo ; Ruggirello, Angela Monia ; Gangemi, Roberto ; Abbate, Sergio ; Longhi, Giovanna ; Lebon, France ; Passarello, Marco. / Investigations of methyl lactate in the presence of reverse micelles by vibrational spectroscopy and circular dichroism. In: Vibrational Spectroscopy. 2012 ; Vol. 60. pagg. 54-62.
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abstract = "The FT-IR and vibrational circular dichroism (VCD) spectra of (S)- and -(R)-methyl lactate have been recorded for neat samples and at various concentrations in CCl4 and DMSO solutions. These spectra are used to analyse the FT-IR and VCD spectra of methyl lactates in presence of sodium bis(2- ethylhexyl)sulfosuccinate (AOT) in CCl4, where the surfactant molecules are known to form reverse micelles. Some tendency of methyl lactate to interact with AOT micellar aggregates is observed, but not as well defined as previously observed for dimethyl tartrate in analogous circumstances. Besides, near infrared (NIR) absorption and VCD data have been obtained for most of the above systems, allowing to monitor the first overtone of the OH-stretching vibration of methyl lactates, especially in the spectroscopic region where the OH bond is not involved in hydrogen bond with other molecules. The NIR absorption and NIR VCD data for dilute solutions are reproduced and interpreted by anharmonic DFT calculations. Further understanding of the behavior of aggregated methyl lactate systems has been gained on this basis.",
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T1 - Investigations of methyl lactate in the presence of reverse micelles by vibrational spectroscopy and circular dichroism

AU - Turco Liveri, Vincenzo

AU - Ruggirello, Angela Monia

AU - Gangemi, Roberto

AU - Abbate, Sergio

AU - Longhi, Giovanna

AU - Lebon, France

AU - Passarello, Marco

PY - 2012

Y1 - 2012

N2 - The FT-IR and vibrational circular dichroism (VCD) spectra of (S)- and -(R)-methyl lactate have been recorded for neat samples and at various concentrations in CCl4 and DMSO solutions. These spectra are used to analyse the FT-IR and VCD spectra of methyl lactates in presence of sodium bis(2- ethylhexyl)sulfosuccinate (AOT) in CCl4, where the surfactant molecules are known to form reverse micelles. Some tendency of methyl lactate to interact with AOT micellar aggregates is observed, but not as well defined as previously observed for dimethyl tartrate in analogous circumstances. Besides, near infrared (NIR) absorption and VCD data have been obtained for most of the above systems, allowing to monitor the first overtone of the OH-stretching vibration of methyl lactates, especially in the spectroscopic region where the OH bond is not involved in hydrogen bond with other molecules. The NIR absorption and NIR VCD data for dilute solutions are reproduced and interpreted by anharmonic DFT calculations. Further understanding of the behavior of aggregated methyl lactate systems has been gained on this basis.

AB - The FT-IR and vibrational circular dichroism (VCD) spectra of (S)- and -(R)-methyl lactate have been recorded for neat samples and at various concentrations in CCl4 and DMSO solutions. These spectra are used to analyse the FT-IR and VCD spectra of methyl lactates in presence of sodium bis(2- ethylhexyl)sulfosuccinate (AOT) in CCl4, where the surfactant molecules are known to form reverse micelles. Some tendency of methyl lactate to interact with AOT micellar aggregates is observed, but not as well defined as previously observed for dimethyl tartrate in analogous circumstances. Besides, near infrared (NIR) absorption and VCD data have been obtained for most of the above systems, allowing to monitor the first overtone of the OH-stretching vibration of methyl lactates, especially in the spectroscopic region where the OH bond is not involved in hydrogen bond with other molecules. The NIR absorption and NIR VCD data for dilute solutions are reproduced and interpreted by anharmonic DFT calculations. Further understanding of the behavior of aggregated methyl lactate systems has been gained on this basis.

KW - Methyl lactate Sodium bis(2-ethylhexyl)sulfosuccinate (AOT) Reverse micelles VCD NIR Anharmonicity

UR - http://hdl.handle.net/10447/63018

M3 - Article

VL - 60

SP - 54

EP - 62

JO - Vibrational Spectroscopy

JF - Vibrational Spectroscopy

SN - 0924-2031

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