2,2-(2,2-oxybis(ethane-2,1-diyl)bis(oxy))bis(n-(2,2-bithiophen-5-ylmethylene)aniline)2,2u2019-(2,2u2019-oxybis(ethane-2 1-diyl)bis(氧))双(n -(2,2u2019-bithiophen-5-ylmethylene)苯胺).pdfVIP

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2,2-(2,2-oxybis(ethane-2,1-diyl)bis(oxy))bis(n-(2,2-bithiophen-5-ylmethylene)aniline)2,2u2019-(2,2u2019-oxybis(ethane-2 1-diyl)bis(氧))双(n -(2,2u2019-bithiophen-5-ylmethylene)苯胺).pdf

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2,2-(2,2-oxybis(ethane-2,1-diyl)bis(oxy))bis(n-(2,2-bithiophen-5-ylmethylene)aniline)2,2u2019-(2,2u2019-oxybis(ethane-2 1-diyl)bis(氧))双(n -(2,2u2019-bithiophen-5-ylmethylene)苯胺)

Molbank 2010, M683; doi: 10.3390/M683 OPEN ACCESS molbank ISSN 1422-8599 /journal/molbank Short Note 2,2-(2,2-Oxybis(ethane-2,1-diyl)bis(oxy))bis(N-(2,2-bithiophen- 5-ylmethylene)aniline) Bruno Pedras 1, Daniel Gallego 1, Patrick Figueiredo 1, Júlio Dinis Nunes-Miranda 2, José Luis Capelo 1,2 and Carlos Lodeiro 1,2,* 1 REQUIMTE, Department of Chemistry, FCT-UNL, 2829-516 Monte de Caparica, Portugal 2 BIOSCOPE Group, Physical-Chemistry Department, Faculty of Science, Campus Ourense, University of Vigo, 32004, Ourense, Spain * Author to whom correspondence should be addressed; E-Mail: clodeiro@uvigo.es. Received: 8 April 2010 / Accepted: 10 May 2010 / Published: 11 May 2010 Abstract: A new flexible fluorescent compound L derived from 1,5-bis(2-aminophenoxy)- 3-oxapentane (A) has been synthesized by classical Schiff-base reaction between (A) and 2,2´-bithiophene carbaldehyde (B). The same synthesis was reproduced by a green methodology using an ultrasonication reaction in a classical sonication bath. The structure of the new compound was confirmed by elemental analysis, IR, 1H-NMR, MALDI-TOF- MS and EI-MS-spectra, UV-vis and fluorescence emission spectroscopy. Keywords: imine compounds; fluorescence chemosensors; 2,2’-bithiophene 1. Introduction In the field of fluorescence chemosensors [1] with potential applications as emissive sensing materials, different approaches have been followed for their synthesis [2–4]. A Schiff-base condensation is a classical reaction starting from a primary amine a