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US 4,933,948 AGranted
Dye laser solutions
AssigneeEastman Kodak Company
InventorWilliam G. Herkstroeter
Life of this patent
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Abstract
Aqueous solutions useful in dye lasers contain a substituted cyclodextrin-fluorescent dye inclusion compound, and an excess of the cyclodextrin. Such solutions give greater fluorescent yields than similar inclusion compounds made from non-substituted cyclodextrins.
Claims13
As a composition of matter, a cyclodextrin inclusion compound of a fluorescent dye and an .alpha.- or .beta.-chclodextrin having a substituent bonded to an oxygen atom in a glucose unit in said cyclodextrin, said substituent being selected from the class consisting of:
- (a) alkyl radicals having 1 to 6 carbon atoms,
- (b) radicals having the formula --CH--CHR.sup.1 --O).sub.n H wherein R.sup.1 is selected from hydrogen and alkyl radicals having up to about six carbon atoms, and n is equal to a small whole number up to six, and
- (c) radicals having the formula --CHR.sup.1 --CHOH--CHR.sup.1 -- wherein R.sup.1 has the same definition as above, such that said radicals bridge two cyclodextrin rings, and the number of said rings so bridged per molecule is from two to about six;
- said substituted cyclodextrin having not more than two substituents per glucose unit.
1 more element
Dependencies are inferred from the claim text.