Structure and orientation of small molecules dissolved in the liquid crystalline phases of CsPFO/water system by multinuclear NMR.
Pyridine, L-alanine and L-phenylalanine dissolved in the liquid crystalline phases of the lyotropic system CsPFO/water are studied by means of (2)H, (13)C and (1)H NMR. The orientational order parameters of the solutes are determined in a wide temperature range, together with some relevant geometrical parameters. In particular, a prevailing conformation for L-phenylalanine interacting with the micelle is suggested and, for all solutes, convincing representations of their specific interactions with the micelle surface are inferred. From (19)F and (13)C NMR spectra in the nematic phase, the orientational order parameters for the perfluorooctanoate chain inside the micelles are estimated.
Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35, 56126, Pisa, Italy.
Silvia
S
Borsacchi
Donata
D
Catalano
Carlo Alberto
CA
Veracini
D000409:Alanine / Q000737:chemistry; D017666:Deuterium Oxide / Q000737:chemistry; D005466:Fluorocarbons / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008823:Micelles; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D010649:Phenylalanine / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry; D014867:Water / Q000737:chemistry*
D005466:Fluorocarbons; D008823:Micelles; D009942:Organometallic Compounds; D011725:Pyridines; C527631:cesium perfluorooctanoate; D014867:Water; D010649:Phenylalanine; D017666:Deuterium Oxide; C023666:pyridine; D000409:Alanine