Title

Two-Photon Photochromism Of An Organic Material For Holographic Recording

Abstract

We report the two-photon-induced photoisomerization of 3-[1-(1,2-dimethyl-1H-indol-3-yl)-ethylidene]-4-isopropylidene- dihydrofuran-2,5-dione (1), a photochromic compound with λmax = 385 nm, using 775-nm femtosecond pulsed laser irradiation. The resulting photoisomer had λmax = 582 nm. The kinetic rate constant for the two-photon-induced electrocyclic isomerization reaction was measured at two different intensities (two different powers), showing a quadratic dependence with respect to the pump intensity. Results of pump-probe solution phase experiments and guest/host polymer thin film interferometric imaging studies are reported. A two-photon absorption molecular cross section σ2 = 10.3 x 10-48 cm4·s/photon was measured using Z-scan, further supporting a two-photon-induced isomerization process. Two-photon-induced interferometric recording in a fulgide-containing polymer film was demonstrated.

Publication Date

9-1-2002

Publication Title

Chemistry of Materials

Volume

14

Issue

9

Number of Pages

3663-3667

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/cm0107981

Socpus ID

0036732983 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0036732983

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