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Birefringence Dispersion of N-(4-methoxybenzylidene)-4-butylaniline (MBBA) Determined From Channeled Spectra

Birefringence Dispersion of N-(4-methoxybenzylidene)-4-butylaniline (MBBA) Determined From Channeled Spectra

I Diaconu, Nicoleta Melniciuc-Puică, Dana Dorohoi, Magda Aflori

Spectrochim Acta A Mol Biomol Spectrosc. 2007 Nov;68(3):536-41.

PMID: 17306616

Abstract:

The birefringence of MBBA, determined from the channeled spectra, decreases when the wavelength increases, showing a normal dispersion. The changes induced by an external electrostatic field acting perpendicular on the nematic director in the birefringence values were evidenced. The birefringence increases with the electrostatic field intensity which enhances the preferential alignment by the big values of the electric dipole moments induced parallel to the long MBBA molecule. The main refractive indices were interferometrically measured for three visible monochromatic radiations and the birefringence values were concordant with those estimated from the channeled spectra. The main molecular polarizabilities were estimated.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP26227736	N-(4-Methoxybenzylidene)-4-butylaniline		26227-73-6	Price

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