2024-03-19T06:37:32Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/306032022-07-06T21:15:19Zcom_10324_1186com_10324_931com_10324_894col_10324_1404
Rodríguez Méndez, María Luz
8a345132091e3f84
500
0000-0002-9760-362X
Alessio, Priscila
233497f1-df1d-4ac7-8c96-8aa751e435d3
500
Apetrei, Constantin
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G. Rubira, R.J.
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L. Constantino, C.J.
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2018-07-11T10:39:31Z
2014
Belstein Journal of Nanoscience and Nanotechnology vol. 14 p. 6754-6763
1533-4880
http://uvadoc.uva.es/handle/10324/30603
10.1166/jnn.2014.9355
Producción Científica
hin films of the bis[2,3,9,10,16,17,23,24-octachlorophthalocyaninate] lutetium(III) complex (LuPc2Cl32) have been prepared by the Langmuir-Blodgett and the Langmuir-Schaefer (LS) techniques. The influence of the chlorine substituents in the structure of the films and in their spectroscopic, electrochemical and sensing properties has been evaluated. The π-A isotherms exhibit a monolayer stability greater than the observed in the unsubstituted analogue (LuPc2), being easily transferred to solid substrates, also in contrast to LuPc2. The LB and LS films present a linear growth forming stratified layers, monitored by UV-VIS absorption spectroscopy. The latter also revealed the presence of LuPc2Cl32 in the form of monomers and aggregates in both films. The FTIR data showed that the LuPc2Cl32 molecules present a non-preferential arrangement in both films. Monolayers of LB and LS were deposited onto 6 nm Ag island films to record surface-enhanced resonance Raman scattering (SERRS), leading to enhancement factors close to 2×103. Finally, LB and LS films deposited onto ITO glass have been successfully used as voltammetric sensors for the detection of catechol. The improved electroactivity of the LB and LS films has been confirmed by the reduction of the overpotential of the oxidation of catechol. The enhancement of the electrocatalytic effect observed in LB and LS films is the result of the nanostructured arrangement of the surface which increases the number of active sites. The sensors show a limit of detection in the range of 10−5 mol/L.
2022-07-6
2022-07-06
application/pdf
eng
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 International
Structural and electrochemical properties of a bis–octachloro-phthalocyaninate nanostructured films. Application as voltammetric sensors.
info:eu-repo/semantics/article
SI
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2022-07-06 23:15:19.161
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