@article{cd09492b63c548a18d08a2e0fa6813dd,
title = "Porphyrin-rhodamine conjugates as new materials with sensing ability",
abstract = "Conjugates based on porphyrin (porph) and rhodamine (rh) moieties linked by amide bonds, dyad 1 (porph-spacer-rh) and triad 2 (porph-spacer-rh-spacer-porph), were prepared respectively from precursor 1 and precursor 2. The sensing ability of precursor 1, dyad 1 and triad 2 towards the divalent metal ions Cu2+, Zn2+, Cd2+, Pb2+, Hg2+ and the monovalent Hg+ was explored in solution by absorption and fluorescence spectroscopy as well as in gas phase using matrix-assisted laser desorption/ionization (MALDI)-TOF mass spectrometry. In solution one-metal-per-ligand molar ratio was obtained with precursor 1 and triad 2, however, a two-metal-per-ligand molar ratio was observed with dyad 1. Additionally, the results obtained by MALDI-TOF-MS confirmed the gas-phase sensing abilities of dyad 1 towards all metal ions tested and of triad 2 towards Zn2+. Computational DFT calculations confirm the same stoichiometry.",
keywords = "Cation dyads, Fluorescent probes, Porphyrin, Rhodamine, Triads",
author = "Pires, {S{\'o}nia M. G.} and Cristina N{\'u}{\~n}ez and Serra, {Vanda Vaz} and Antonio S{\'a}nchez-Coronilla and Faustino, {Maria A. F.} and Sim{\~o}es, {M{\'a}rio M. Q.} and Silva, {Artur M. S.} and Neves, {Maria G. P. M. S.} and Capelo, {Jos{\'e} Luis} and Carlos Lodeiro",
note = "Sem PDF conforme despacho. info:eu-repo/grantAgreement/FCT/5876/147415/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F64354%2F2009/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F74270%2F2010/PT# info:eu-repo/grantAgreement/FCT/5876/147258/PT# Authors are grateful to the University of Aveiro, FCT/MEC for the financial support to the project PPCDT/QUI/64658/2006 and to the QOPNA Research Unit FCT (UID/QUI/00062/2013 ) through national founds and, where applicable, co-financed by the FEDER , within the PT2020 Partnership Agreement, and also to the Portuguese NMR Network. S.M.G.P. and V.V.S. thanks FCT/MEC for their grants respectively, SFRH/BD/64354/2009 and SFRH/BPD/74270/2010 . C.N. acknowledges to Xunta de Galicia (Spain) for her post-doctoral contract (I2C programme). This work was supported by the Unidade de Ci{\^e}ncias Biomoleculares Aplicadas-UCIBIO financed by national funds from FCT/MEC ( UID/Multi/04378/2013 ) and co-financed by the FEDER under the PT2020 Partnership Agreement. JLC and CL are grateful to the Scientific Society PROTEOMASS (Portugal) for funding and facilities. Calculations were done through CICA – Centro Inform{\'a}tico Cient{\'i}fico de Andaluc{\'i}a (Spain). ASC thanks the financial support from VPPI-US",
year = "2016",
month = dec,
day = "1",
doi = "10.1016/j.dyepig.2016.04.003",
language = "English",
volume = "135",
pages = "113--126",
journal = "Dyes And Pigments",
issn = "0143-7208",
publisher = "Elsevier Ltd",
number = "SI",
}