Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/31936
Título: | Synthesis and evaluation of arylfuryl-bis(indolyl)methanes as selective chromogenic and fluorogenic ratiometric receptors for mercury ion in aqueous solution |
Autor(es): | Batista, Rosa Maria Ferreira Costa, Susana P. G. Silva, Regina M. P. Lima, Nuno E. M. Raposo, M. Manuela M. |
Palavras-chave: | Bis(indolyl)methanes Arylfuran Ratiometric fluorogenic chemosensors Hg2+ Direct visual detection Aqueous solution |
Data: | 2014 |
Editora: | Elsevier 1 |
Revista: | Dyes and Pigments |
Resumo(s): | A series of arylfuryl-bis(indolyl)methane derivatives were prepared in good yields by electrophilic substitution of indole with furyl aldehydes through a simple and mild hydrogensulfate-catalysed reaction and studied as chemosensors for transition metal cations by performing spectrophotometric and spectrofluorimetric titrations. Selective recognition of Hg2+ was achieved in organic aqueous mixture (CH3CN/H2O, 7:3) for the various receptors, with an easily detectable colour change from colourless to purple and also through a fluorescence quenching, making these compounds suitable for dual chromoand fluorogenic ratiometric sensing of Hg2+. The binding stoichiometry between the receptors and Hg2+ was found to be 1:1. The binding process was also followed by 1H NMR titrations which corroborated the previous findings. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/31936 |
DOI: | 10.1016/j.dyepig.2013.11.008 |
ISSN: | 0143-7208 |
Versão da editora: | http://www.sciencedirect.com/science/article/pii/S0143720813004464 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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manuscript DYPI 2014.pdf | 1,84 MB | Adobe PDF | Ver/Abrir |