Modulation of optical properties of new photosensitive polymers: 3-D optical data storage media
ABSORBING FLUORENE DERIVATIVES; MEMORY; DYES; Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Optics; Polymer Science
We report the modulation of absorption and emission properties via single and two-photon photoinduced changes in polymeric media with two-photon fluorescence readout of multilayer structures. Photoinduced acid generation in the presence of a two-photon fluorescent dye possessing strongly basic functional groups underwent protonation upon exposure with UV or near-IR (740 nm fs pulses) irradiation. Solution studies demonstrate formation of monoprotonated and diprotonated species upon irradiation, each resulting in distinctly different absorption and fluorescence properties, Hence, two-channel, two-photon fluorescence imaging provides "positive" or "negative" image readout capability. Further, a poly-styrene-co-malaic anhydride copolymer containing a two-photon absorbing fluorophore was used to demonstrate near-IR two-photon based image formation, followed by two-photon based image readout. Results of solution and solid polymer thin films experiments are presented.
Chromogenic Phenomena in Polymers: Tunable Optical Properties
"Modulation of optical properties of new photosensitive polymers: 3-D optical data storage media" (2005). Faculty Bibliography 2000s. 4993.