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Novel Photochromic Zwitterions For Multifrequency Data Storage

Published online by Cambridge University Press:  25 February 2011

G. J. Ashwell ,
E. J. C. Dawnay ,
A. P. Kuczynski  and
M. Szablewski
G. J. Ashwell*
Affiliation:
Centre for Molecular Electronics, Cranfield Institute of Technology, Cranfield, Bedford MK43 OAL, UK
E. J. C. Dawnay
Affiliation:
Centre for Molecular Electronics, Cranfield Institute of Technology, Cranfield, Bedford MK43 OAL, UK
A. P. Kuczynski
Affiliation:
Centre for Molecular Electronics, Cranfield Institute of Technology, Cranfield, Bedford MK43 OAL, UK
M. Szablewski
Affiliation:
Centre for Molecular Electronics, Cranfield Institute of Technology, Cranfield, Bedford MK43 OAL, UK
*
*To whom correspondence should be addressed.
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Abstract

Z-β-(N-alkyl-4-pyridinium)-α-cyano-4-styryldicyanomethanide (R-P3CNQ) and its quinolinium analogue (R-Q3CNQ) are photochromic. Their LB films show sharp charge transfer bands at 495 nm (C16H33-P3CNQ) , 565 nm (C16H33-Q3CNQ) and 614 nm (C8H17-Q3CNQ) with half widths at half maximum of 27, 22 and 37 nm respectively. They show interesting nonlinear optical properties and have the potential to store three bits per pixel when addressed at these wavelengths.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989 , 507
Copyright
Copyright © Materials Research Society 1990

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References

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