Monolayers spectroscopic investigation

Monolayer FOms Transferred to Solid Substrates. Historically, the spectroscopic investigation of monolayer physical structure has been performed on films transferred to solid substrates, usually through conventional L-B techniques. A wide variety of methods may then be employed in the study of these films. For example, ultraviolet, circular dichroism, and IR spectroscopy, as well as electron microscopy have been performed on monolayers transferred to quartz (for UV and CD), Ge (for IR), and mica (for EM). While much useful information has been obtained in the study of transferred monolayers, there is always a concern about whether the actual physical process of transfer from a gas-liquid to a gas-solid interface induces a change in the structure of the molecule. 

Pan, Y.C., Wen, Y., Zhang, R. et al. (2012) Electrochemical and SERS spectroscopic investigations of 4-methyl-477-l,2,4-triazole-3-thiol monolayers self-assembled on copper surface. Applied Surface Science, 258, 3956-3961. 

Viswanath P, Aroti A, Motschmann H, Leontidis E (2009) Vibrational sum frequtaicy generation spectroscopic investigation of the interaction of thiocyanate ions with zwitterionic phospholipid monolayers at the air-water interface. J Phys Chem B 113 14816... 

Zhao, C. and Wachs, I. (2008). An Operando Raman, IR, and TPSR Spectroscopic Investigation of the Selective Oxidation of Propylene to Acrolein over a Model Supported Vanadium Oxide Monolayer Catalyst, J. Phys. Chem. C, 112, pp. 11363-11372. 

Interface, the air-water, chirality and molecular recognition in monolayers at, 28, 45 Intermediates, reactive, study of, by electrochemical methods, 19, 131 Intermediates, tetrahedral, derived from carboxylic acids, spectroscopic detection and investigation of their properties, 21, 37 Intramolecular reactions, effective molarities for, 17, 183 Intramolecular reactions, of chain molecules, 22, 1... 

Biirgi and co-workers [154-156] have reported a series of conformational investigations of chiral ligands absorbed on AuNPs using VCD spectroscopy complemented with DFT calculations, a powerful spectroscopic tool for conformational studies of condensed matters. Three organic chiral molecules, namely /V-acetyl-cysteine, /V- isobutyry I -cysteine, and l,l -binaphthyl-2,2 -dithiol (BINAS), were used as chiral ligands in their studies. The details about how to prepare monolayer-protected AuNPs with these ligands can be found in the pertinent references [154-156]. The measured VA and VCD spectra of the AuPNs protected by /V-isobutyryl-L/D-cysteine monolayer are shown in Fig. 18, as examples. As one... 

Surface chemical changes created by these surface chemical reactions will be monitored by Electron Spectroscopy for Chemical Analysis (ESCA)(2), a very powerful spectroscopic technique for investigating surface compositions extending from 1-20 monolayers in depth from the surface. When the spectrometer is equipped with angle resolution capability, it also offers a means of non-destructive depth profiling of the upper 50A of substrate layers. 

We investigated the adsorption of cadmium ions on mixed monolayers at the air/water interface using both ex-situ and in-situ FTIR spectroscopic methods. 

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