Three-dimensional two-photon imaging in polymeric materials

被引：2

作者：

Belfield, KD ^{[1
]}

Schafer, KJ ^{[1
]}

Andrasik, S ^{[1
]}

Yavuz, O ^{[1
]}

Van Stryland, EW ^{[1
]}

Hagan, DJ ^{[1
]}

Hales, JM ^{[1
]}

机构：

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

来源：

PHOTOREFRACTIVE FIBER AND CRYSTAL DEVICES: MATERIALS, OPTICAL PROPERTIES, AND APPLICATIONS VII, AND OPTICAL DATA STORAGE | 2002年 / 4459卷

关键词：

Fluorophore; photoacid generation; two-photon fluorescence imaging;

D O I：

10.1117/12.454033

中图分类号：

T [工业技术];

学科分类号：

08 ;

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 (7benzothiazolyl-9,9-didecyl-2,2-(N,N-diphenylamino)fluorene underwent protonation upon exposure with LTV 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.

引用

页码：281 / 289

页数：9

共 13 条

[1] New two-photon absorbing fluorene derivatives: Synthesis and nonlinear optical characterization [J].