Photosensitive polymeric media for two-photon based optical data storage

被引：2

作者：

Belfield, KD ^{[1
]}

Schafer, KJ ^{[1
]}

Andrasik, S ^{[1
]}

机构：

[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA

来源：

MULTIPHOTON ABSORPTION AND NONLINEAR TRANSMISSION PROCESSES: MATERIALS, THEORY, AND APPLICATIONS | 2003年 / 4797卷

关键词：

fluorophore; photoacid generation; two-photon fluorescence imaging; optical data storage; two-photon absorption;

D O I：

10.1117/12.453324

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 rum 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.

引用

页码：275 / 283

页数：9

共 18 条

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