Encyclopedia of chemical technology. Volume X: Pentacene to polymethine dyes

Improved Temporal Stability of Polymethine Laser Dyes in Aqueous Solutions

Polymethine laser dyes which fluoresce in the near infrared in organic solvents generally exhibit poor temporal stability at room temperature. Two typical laser-pumped polymethine dyes in aqueous solutions containing nonionic surfactants are investigated. Temporal stability was improved 20-fold, as compared to organic solutions, with no significant changes in laser-pumping threshold or tuning r...

ENCYCLOPEDIA OF EMULSION TECHNOLOGY VOLUME 3 Basic Theory Measurement Applications

Efficient two-photon absorbing acceptor-pi-acceptor polymethine dyes.

We present an experimental and theoretical investigation of the linear and nonlinear optical properties of a series of acceptor-pi-acceptor symmetrical anionic polymethine dyes with diethylamino-coumarin-dioxaborine terminal groups and different conjugation lengths. Two-photon absorption (2PA) cross sections (delta(2PA)) are enhanced with an increase of pi-conjugation length in the investigated...

Encyclopedia of Neuroscience Volume

mesuring the staff technology readiness, the case of a multi national chemical company operating in iran

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