- Fluorescence of Polymerized Diacetylene Bilayer Films
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Monolayer films of 27-carbon-chain-length alkyldiacetylenecarboxylic acid, C14H29CC-CCC8H16COOH, can be polymerized on the aqueous surface by UV irradiation.The resulting blue polydiacetylene is readily transferred onto glass slides to form multilayers.The blue form, which absorbs at 640 and 580 nm, is nonfluorescent, but treatment with heat or polar, nonaqueous solvent (e.g., pyridine) irreversibly transforms the polymer to a red form absorbing at 540 and 500 nm.This red form fluoresces with emission maxima at 570 and 640 nm.The fluorescence quantum yield, using cresyl violet and Rhodamine 6G embedded in nail polish films as standards, is measured to be (2.0 +/- 0.5) X 10-2.
- Olmsted, John,Strand, Margith
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p. 4790 - 4792
(2007/10/02)
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