TY - JOUR
T1 - A lanthanide complex for selective sensing of Fe(III) ions
AU - Zulys, A.
AU - Amanda, P.
N1 - Funding Information:
Ac k n o wle d g e m e n ts This research was funded by PITTA Grant from Universitas Indonesia in 2017 with contract number 2068/UN2.R3.1/PPM.00/2017. The author would like to thank Einago (www.einago.com) for the English language review.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/2/22
Y1 - 2019/2/22
N2 - The lanthanide complex [Eu(Tpy-NH2)2Cl2]Cl (1), where Tpy-NH2 is 4-(paminophenyl)-2,2:6,2"-terpyridine, was synthesized. Its photophysical properties, e.g., Fourier Transform Infrared (FTIR) spectra, UV-visible absorption spectra, and luminescence properties, in the presence of various metal ions were studied. Tpy-NH2 acts as chromophore, or light-harvesting photo sensitizing antenna moiety, for Eu3+ luminescence. The bright luminescence in 1 suggests that favourable photo-induced energy transfer occurs from the Tpy-NH2 antenna to the Eu3+ to fill the long-lived emissive excited states of Eu3+ f-f transitions. The luminescence spectral profile of complex 1 showed a characteristic sharp emission band maximum for 5D0 →7F2 f-f transitions at 614 nm originating from Eu3+ ions. The luminescence studies revealed that this material possesses a highly selective fluorescence quenching response to Fe3+ ions in liquid suspension. The dose-dependent fluorescent quenching showed good linearity, and a Fe3+ detection limit of 0.655 μM was calculated for complex 1. This material can potentially be used as a fluorosensor for sensing Fe3+ ions; its luminescence quenching response can be explained in terms of a competitive absorption mechanism.
AB - The lanthanide complex [Eu(Tpy-NH2)2Cl2]Cl (1), where Tpy-NH2 is 4-(paminophenyl)-2,2:6,2"-terpyridine, was synthesized. Its photophysical properties, e.g., Fourier Transform Infrared (FTIR) spectra, UV-visible absorption spectra, and luminescence properties, in the presence of various metal ions were studied. Tpy-NH2 acts as chromophore, or light-harvesting photo sensitizing antenna moiety, for Eu3+ luminescence. The bright luminescence in 1 suggests that favourable photo-induced energy transfer occurs from the Tpy-NH2 antenna to the Eu3+ to fill the long-lived emissive excited states of Eu3+ f-f transitions. The luminescence spectral profile of complex 1 showed a characteristic sharp emission band maximum for 5D0 →7F2 f-f transitions at 614 nm originating from Eu3+ ions. The luminescence studies revealed that this material possesses a highly selective fluorescence quenching response to Fe3+ ions in liquid suspension. The dose-dependent fluorescent quenching showed good linearity, and a Fe3+ detection limit of 0.655 μM was calculated for complex 1. This material can potentially be used as a fluorosensor for sensing Fe3+ ions; its luminescence quenching response can be explained in terms of a competitive absorption mechanism.
KW - europium, quenching
KW - Fe ions
KW - fluorescent chemosensors
KW - lanthanide complex
UR - http://www.scopus.com/inward/record.url?scp=85066826091&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/496/1/012009
DO - 10.1088/1757-899X/496/1/012009
M3 - Conference article
AN - SCOPUS:85066826091
SN - 1757-8981
VL - 496
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012009
T2 - 2nd International Conference on Current Progress in Functional Materials 2017, ISCPFM 2017
Y2 - 8 November 2017 through 9 November 2017
ER -