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- W4320929866 abstract "Polydiacetylenes are a very promising class of polymers for both photonic and electronic applications 1-3 because of their highly conjugated structures. We, recently, have discovered the possibility of depositing a permanent holographic grating of information, made of polydiacetylene on a glass substrate. A novel technique for obtaining high quality thin films of a polydiacetylene derivative of 2-methyl-4-nitroaniline (PDAMNA) using photodeposition from monomer solutions onto UV transparent substrates was discovered by members of our group a few years back 4 . This compound was one of several asymmetric diacetylenes that were first studied extensively for their optical and electronic properties by Garito and co-workers in the late 1970s; however, their investigations did not include behavior in solutions 5,6 . PDAMNA films can be obtained readily from solutions of DAMNA in 1,2-dichloroethane by irradiation with UV light through a quartz or glass window, which serves as the substrate. This simple straightforward process yields transparent films with thickness on the order of 1μm 7 . To obtain PDAMNA thin films, a solution of DAMNA in 1,2-dichloroethane is placed inside a chamber shown in figure 1. DAMNA monomer strong absorption at 366nm. A hand-held 15W UV lamp placed directly in front of the substrate ( approximate radiation intensity of 800 μW/cm 2 at 6 in.), a film of approximately 0.6 μm thickness is obtained after 24 hours of exposure." @default.
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- W4320929866 date "1998-01-01" @default.
- W4320929866 modified "2023-09-29" @default.
- W4320929866 title "Photodeposition technique for restoring holographic films of polydiacetylene" @default.
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- W4320929866 doi "https://doi.org/10.1364/domo.1998.dtud.23" @default.
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