Title

Photosensitive Polymeric Media For Two-Photon Based Optical Data Storage

Keywords

Fluorophore; Optical data storage; Photoacid generation; Two-photon absorption; Two-photon fluorescence imaging

Abstract

We report image formation via single and two-photon photoinduced fluorescence changes in a polymeric medium with two-photon fluorescence readout of multiplayer structures. Photoinduced acid generation in the presence of a two-photon fluorescent dye possessing strongly basic functional groups (7-benzothiazolyl-9,9-didecyl-2,2-(N,N-diphenylamino)fluorene underwent protonation upon exposure with UV or near-IR (740 nm fs pulses). Solution studies demonstrate formation of monoprotonated and diprotonated species upon irradiation, each resulting in distinctly different absorption and fluorescence properties. The fluorescence of the original, neutral, fluorophore is quenched upon monoprotonation with a concomitant increase in fluorescence at longer wavelengths due to the monoprotonated form. Hence, two-channel two-photon fluorescence imaging provides "positive" or "negative" image readout capability. Results of solution and solid polymer thin films experiments are presented.

Publication Date

12-1-2002

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

4797

Number of Pages

275-283

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.453324

Socpus ID

0038627927 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0038627927

This document is currently not available here.

Share

COinS