E/Z-Photoisomerization of N,N'-Bis(4-dimethylaminobenzylidene)1,2-diaminoethane and N,N'-Bis(4-dimethylaminobenzylidene)1,3-diaminopropane in Chloroform

Samimi, Asghar; Barati, Kazem; HabibI, Mohammad Hossein; Shafieyan, Hooshang; Menbari, Ehsan

doi:https://doi.org/10.1155/2011/918589

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Volume 8 | Article ID 918589 | https://doi.org/10.1155/2011/918589

E/Z-Photoisomerization of N,N'-Bis(4-dimethylaminobenzylidene)1,2-diaminoethane and N,N'-Bis(4-dimethylaminobenzylidene)1,3-diaminopropane in Chloroform

Asghar Samimi,¹Kazem Barati,²Mohammad Hossein HabibI,²Hooshang Shafieyan,³and Ehsan Menbari¹

Received13 Jan 2010

Accepted20 Apr 2010

Abstract

The E/Z-Photoisomerization of Schiff bases N,N'-bis(4-dimethylamino benzylidene)1,2-diaminoethane (BDAE) and N,N'-bis(4-dimethylaminobenzyli-dene)1,3-diaminopropane (BDAP) were studied by UV-Vis absorption spectroscopy and theoretical chemistry calculations. Photochemical investigations in solution depict the time resolved spectral changes, recorded before and after irradiation. The shift indicates the transformation from E to Z configuration of the C=N bond in solution for BDAE and BDAP. Spectra profiles and kinetic constants were evaluated using multivariate curve resolution and non-linear least squares curve fitting by toolbox of MATLAB program using the corresponding absorption spectra-time data. The experimental results show that BDAP can perform the photochromism easier than BDAE, may be due to the molecular topology difference.

Copyright

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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