Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 201, Issue -, Pages 387-394Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.03.115
Keywords
Anion binding; Phthalocyanines; Chromogenic chemosensors; Anionic coordination; Reversible sensors
Funding
- Fundacao para a Ciencia e a Tecnologia (FCT, Portugal)
- European Union, QREN, COMPETE [PEst-C/QUI/UI0062/2013, FCOMP-01-0124-FEDER-037296]
- CICECO [Pest C-CTM/LA0011/2013, FCOMP-01-0124-FEDER-037271]
- FCT [SFRH/BPD/73060/2010]
- [PTDC/CTM/101538/2008]
- [PPTDC/DG/QUI/82011/2006]
- Fundação para a Ciência e a Tecnologia [PTDC/CTM/101538/2008, SFRH/BPD/73060/2010] Funding Source: FCT
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Detailed herein is the use of 2,3,9,10,16,17,23,24-octatosylaminophthalocyanine as a chromogenic chemosensor for anions. The host:guest complexes formed during the sensing event can be regenerated by acid treatment without loss of the sensing ability. This allows the phthalocyanine chemosensor to be reused. This system also responds in a colorimetric manner when exposed to the neutral solvent molecules, dimethyl sulfoxide and methanol. A single-crystal X-ray structure of the Pc 1:2 MeOH complex was obtained. It illustrates the main interactions between the host:guest species in the solid state. Fits of the binding curves are consistent with this stoichiometry predominating in the solution state. (C) 2014 Elsevier B.V. All rights reserved.
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