Compositions – Light transmission modifying compositions
Patent
1998-04-28
2000-09-12
Tucker, Philip
Compositions
Light transmission modifying compositions
252586, 252587, 252589, 540145, F21V 900, F21V 904, G02B 523, C07B 4700
Patent
active
06117369&
ABSTRACT:
The present invention relates to a nickel-porphyrin derivative in a matrix, the nickel-porphyrin derivative comprising at least two conformational isomers, a lower-energy-state conformer and a higher-energy-state conformer, such that when the higher-energy-state conformer is generated from the lower-energy-state conformer following absorption of a photon of suitable energy, the time to return to the lower-energy-state conformer is greater than 40 nanoseconds at approximately room temperature. The nickel-porphyrin derivative is useful in optical memory applications.
REFERENCES:
patent: 3687863 (1972-08-01), Wacher
patent: 4885114 (1989-12-01), Gordon et al.
patent: 5011756 (1991-04-01), Nikles
patent: 5252698 (1993-10-01), Bhardwaj et al.
patent: 5424305 (1995-06-01), Skalkos et al.
patent: 5424974 (1995-06-01), Liu et al.
patent: 5438051 (1995-08-01), Morgan et al.
patent: 5663328 (1997-09-01), Ellis, Jr. et al.
Drain, C., Gentemann, S., Roberts, J., Nelson, N., Medforth, C., Jia, S., Simpson, M., Smith, K., Fajer, J., Shelnutt, J., and Holten, D., "Picosecond to Microsecond Photdynamics of a Nonplanar nickel Porphyrin: Solvent Dielectric and Temperature Effects", Am. Chem. Soc., 1998, 120, 3781-3791.
Song, X., Jentzen, W., Jia, S., Jaquinod, L., Nurco, D., Medforth, C., Smith, K., and Shelnutt, J., "Representation of Nonplanar Structures of Nickel(II) 5,15-Disubstituted Porphyrins in Terms of Displacements along the Lowest-Frequency Normal Coordinates of the Macrorcycle," J. Am. Chem. Soc., 1996, 118(51), 12975-12988.
Goll, J., Moore, K., Ghosh, A., Therien, M., "Synthesis, Structure, Electronic Spectroscopy, Photophysics, Electrochemistry, and X-ray Photoelectron Spectroscopy of Highly-Electron-Deficient [5,10,15,20-Tetrakis(perfluoroalkyl)porphinato]zinc(II) Complexes and Their Free Base Derivatives," J. Am. Chem. Soc. 1996, 118, 8344-8354.
Holten Dewey
Jia Songling
Medforth Craig
Nelson Nora Y.
Shelnutt John A.
Sandia Corporation
Tucker Philip
LandOfFree
Nickel porphyrins for memory optical applications does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nickel porphyrins for memory optical applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nickel porphyrins for memory optical applications will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-92781