2009
DOI: 10.1021/ic900231h
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Phosphates Sensing: Two Polyamino-Phenolic Zinc Receptors Able to Discriminate and Signal Phosphates in Water

Abstract: Two Zn(II)-dinuclear systems were studied as receptors for phosphates; they were obtained by using the two polyamino-phenolic ligands 3,3'-bis[N,N-bis(2-aminoethyl)aminomethyl]-2,2'-dihydroxybiphenyl (L1) and 2,6-bis[N,N-bis(2-aminoethyl)aminomethyl]phenol (L2) in which the difference lies in the spacers between the two dien units, biphenol or phenol in L1 and L2, respectively. The metallo-receptors obtained are able to selectively discriminate phosphate (Pi) from pyrophosphate (PPi) and vice versa in aqueous … Show more

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Cited by 89 publications
(50 citation statements)
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“…627 Potentiometric studies in aqueous solution (0.15 M NaCl) revealed the formation of 1:1 complexes with the receptors and both inorganic phosphate and pyrophosphate. At near-neutral pH, a strong preference was observed for pyrophosphate by 577 and for inorganic phosphate by 578 .…”
Section: Major Phosphate-binding Functionalitiesmentioning
confidence: 99%
“…627 Potentiometric studies in aqueous solution (0.15 M NaCl) revealed the formation of 1:1 complexes with the receptors and both inorganic phosphate and pyrophosphate. At near-neutral pH, a strong preference was observed for pyrophosphate by 577 and for inorganic phosphate by 578 .…”
Section: Major Phosphate-binding Functionalitiesmentioning
confidence: 99%
“…[7][8][9][10][11] Organic rare earth complexes have garnered growing interest due to their potential application as fluorescent probes, labels in biological immunoassay applications, as optical amplifiers 12,13 and as active central species in photoluminescent materials. 14,15 Due to the unique photophysical and photochemical properties of rare earths complexes which exhibit potential to be harnessed in the development of new photodynamic therapies, they offer exciting opportunities to elucidate the structural features of nucleotides such as DNA.…”
Section: 6mentioning
confidence: 99%
“…Phosphates are ubiquitous in natural waters and important analytical targets for water quality monitoring 1. Methods for phosphate detection are currently mainly based on colorimetric or conductance probes,2 luminescence probes,3, 4, 5 fluorescence lifetime,6 poly‐amino‐phenolic zinc receptors,7 or gravimetric probes 8. Electrochemical phosphate detection is difficult due to the electrochemically inert and highly hydrophilic nature of phosphate.…”
Section: Introductionmentioning
confidence: 99%