Design and synthesis of heterocyclic multi-branched dyes for two-photon absorption

We report the first example of a heterocycle-based multi-branched two-photon absorption (TPA) dye. We show that the new chromophore presents a very large TPA cross-section in the femtoseconds (fs) regime. Comparison of the TPA cross-sections between the branched system and the corresponding “monomer...

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Bibliographic Details
Published inSynthetic metals Vol. 139; no. 3; pp. 795 - 797
Main Authors Abbotto, A., Beverina, L., Bradamante, S., Facchetti, A., Pagani, G.A., Bozio, R., Ferrante, C., Pedron, D., Signorini, R.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Lausanne Elsevier B.V 09.10.2003
Amsterdam Elsevier Science
New York, NY
Subjects
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Heterocycle synthesis
Laser spectroscopy
Multiphoton absorption spectroscopy
Non-linear optical methods
Optical materials
Optics
Physics
Polymers and organics
Heterocycle synthesis
Multiphoton absorption spectroscopy
Non-linear optical methods
Laser spectroscopy
Nitrogen heterocycle
Pyrrole derivatives
Pyridinium compounds
Emission spectra
Optical materials
Absorption spectra
Two photon absorption
Chemical synthesis
Nonlinear optics
Organic compounds
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Summary:We report the first example of a heterocycle-based multi-branched two-photon absorption (TPA) dye. We show that the new chromophore presents a very large TPA cross-section in the femtoseconds (fs) regime. Comparison of the TPA cross-sections between the branched system and the corresponding “monomeric unit” shows a strong cooperative enhancement. A value of 22.6:1, corresponding to a 750% enhancement, was observed.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(03)00281-9