Journal
TETRAHEDRON
Volume 64, Issue 39, Pages 9230-9238Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2008.07.043
Keywords
pi-conjugated systems; thiophene; imidazole; phenanthroline; solvatochromic probes; Hyper-Rayleigh scattering (HRS); thermal stability; nonlinear optics (NLO)
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Funding
- the Fundacao para a Ciencia e Tecnologia (Portugal)
- Centro de Quimica - Universidade do Minho [PTDC/QUI/66250/2006, SFRH/BD/36396/2007]
- Departamento de Fisica (Universidade do Minho)
- Departamento de Quimica (FCT-UNL) RFQUIMTE
- Fundação para a Ciência e a Tecnologia [PTDC/QUI/66250/2006, SFRH/BD/36396/2007] Funding Source: FCT
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A Series of new heterocyclic chromophores 3-6 were synthesized in moderate to excellent yields by condensation of 5,6-phenantroline-dione with formyl-thiophene derivatives 1-2 in the presence of ammonium acetate in glacial acetic acid. These chromophores possess ail (oligo)thienyl pi-conjugated system attached to imidazo-phenanthroline moiety. These derivatives were evaluated concerning their solvatochronnic properties, thermal stabilities, and molecular optical nonlinearities. (C) 2008 Elsevier Ltd. All rights reserved.
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