Synthesis and properties of a new two-photon absorbing chromophore
| Autor: | Xutang Tao, Guibao Xu, Lei Wang, Yang Liu, Minhua Jiang, Jiaxiang Yang, Yan Ren, Zhi Liu, Yun-Xing Yan |
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| Rok vydání: | 2006 |
| Předmět: |
Tertiary amine
Chemistry Mechanical Engineering Metals and Alloys Chromophore Condensed Matter Physics Photochemistry Laser Fluorescence Two-photon absorption Electronic Optical and Magnetic Materials law.invention Delocalized electron Two-photon excitation microscopy Mechanics of Materials law Materials Chemistry Absorption (electromagnetic radiation) |
| Zdroj: | Synthetic Metals. 156:141-145 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2005.10.017 |
| Popis: | This paper presents of a new, conjugated and symmetric multi-branched two-photon absorption chromophore 1,2,4,5-tetrakis(4- N -methyl- N -hydroxyethylamino)vinylphenyl benzene (TKAVPB) with D-π-D structure. The new dye built on 1,2,4,5-benzene core with four amino-branching units, which allows efficient π-electron delocalization, exhibits moderate two-photon absorption (TPA) value in the femtoseconds regime (TPA cross-section as 97 × 10 −50 cm 4 s photon −1 molecule −1 with 200 fs laser pulses). Linear absorption, single and two-photon fluorescence spectra were experimentally studied. When pumped with 760 nm laser irradiation, TKAVPB shows strong two-photon up-conversion fluorescence with peak at 527 nm. |
| Databáze: | OpenAIRE |
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