TY - JOUR
T1 - From yellow to pink using a fluorimetric and colorimetric pyrene derivative and mercury (II) ions
AU - Pinheiro, Daniela
AU - de Castro, Catherine S.
AU - Seixas de Melo, J. Sergio
AU - Oliveira, Elisabete
AU - Nunez, Cristina
AU - Fernandez-Lodeiro, Adrian
AU - Capelo, José Luis
AU - Lodeiro, Carlos
N1 - We are grateful to the Scientific Association ProteoMass (Portugal) for financial support. D.P., C.S.d.C. and E. O acknowledges the doctoral (BD) and post-doctoral grants SFRH/BD/74351/2010, SFRH/BD/75134/2010, and SFRH/BPD/72557/2010, respectively, provided by Fundacao para a Ciencia e a Tecnologia-Ministerio da Educacao e Ciencia, FCT-MEC, Portugal. C. N. thanks Xunta de Galicia (Spain) for the I2C program post-doctoral contract. A.F.L. thankScientific Association ProteoMass (Portugal) for financial support. Authors thanks at Associated Laboratory REQUIMTE for the Project Pest-C/EQB/LA0006/2013. The Coimbra Chemistry Centre is supported by the Fundacao para a Ciencia e a Tecnologia (FCT), Portuguese Agency for Scientific Research, through the project PEst-OE/QUI/UI0313/2014.
PY - 2014/11
Y1 - 2014/11
N2 - A new simple and multifunctional fluorescent probe based on pyrene linked through an imine bond to ahydroxyphenol unit was synthesised, fully characterized and investigated in solution. Additionally, itsbehaviour in the presence of several ions (Hþ, Zn2þ, Cd2þ, Cu2þ, Ni2þ, Pb2þ, Fe2þ, Hg2þ and Al3þ) wasinvestigated in CH2Cl2. It was found that the absorption spectra of probe 1 shows no differences for allions titrations except in the presence of Hþ and Hg2þ where a new longer wavelength band becomesvisible (inducing a colour change from yellow to orange and pink, respectively). In the emission, a blueshiftand an enhancement of the fluorescence of the probe for all metal ions was observed with theexception of Al3þ where no detectable changes could be observed. The probe was found to be selectivefor Hg2þ ion at low concentrations (till one equivalent).
AB - A new simple and multifunctional fluorescent probe based on pyrene linked through an imine bond to ahydroxyphenol unit was synthesised, fully characterized and investigated in solution. Additionally, itsbehaviour in the presence of several ions (Hþ, Zn2þ, Cd2þ, Cu2þ, Ni2þ, Pb2þ, Fe2þ, Hg2þ and Al3þ) wasinvestigated in CH2Cl2. It was found that the absorption spectra of probe 1 shows no differences for allions titrations except in the presence of Hþ and Hg2þ where a new longer wavelength band becomesvisible (inducing a colour change from yellow to orange and pink, respectively). In the emission, a blueshiftand an enhancement of the fluorescence of the probe for all metal ions was observed with theexception of Al3þ where no detectable changes could be observed. The probe was found to be selectivefor Hg2þ ion at low concentrations (till one equivalent).
KW - Colorimetric
KW - Fluorescence
KW - Mercury (II)
KW - Molecular probes
KW - Pyrene
KW - Schiff-base
U2 - 10.1016/j.dyepig.2014.04.012
DO - 10.1016/j.dyepig.2014.04.012
M3 - Article
VL - 110
SP - 152
EP - 158
JO - Dyes and Pigments
JF - Dyes and Pigments
SN - 0143-7208
IS - SI
ER -