Synthesis, characterization and optical properties of a new heterocycle-based chromophore
| Autor: | Chuan-Kui Wang, Yupeng Tian, He-Zhou Wang, Lei Tian, Minhua Jiang, Hai-Hua Fan, Yuan-Hong Sun, Xutang Tao, Yun-Xing Yan |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Absorption spectroscopy
Organic Chemistry Chromophore Ring (chemistry) Photochemistry Two-photon absorption Acceptor Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound chemistry Excited state Pyridine Imidazole Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy |
| Zdroj: | Optical Materials. 30:423-426 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2006.11.073 |
| Popis: | A new heterocycle-based two-photon absorption chromophore, 4-[4-(4,5-diphenyl-1 H -imidazol-2-yl)styryl]pyridine (DIYSP), has been synthesized and characterized. The molecule possesses an A–π–A′ structure. The π-deficient heteroaromatic ring (4,5-diphenyl-1 H -imidazole) is used as an acceptor (A), and the pyridine ring is used as another acceptor (A′). Pumped with 740 nm laser excitation, DIYSP had a two-photon absorption cross-section 41 GM (1 GM = 1 × 10 −50 cm 4 s photon −1 ) and a two-photon excited fluorescence 511 nm in DMF, respectively. A microstructure using DIYSP as an initiator has been fabricated under irradiation of 80 fs, 80 MHz Ti:sapphire femtosecond laser at 800 nm. The possible mechanism of photopolymerization is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect