David Parker's Outputs (128)

Non-radiative deactivation of the excited states of europium, terbium and ytterbium complexes by proximate energy-matched OH, NH and CH oscillators: an improved luminescence method for establishing solution hydration states (1999)
Journal Article
Beeby, A., Clarkson., I., Dickins, R., Faulkner, S., Parker, D., Royle, L., …Woods, M. (1999). Non-radiative deactivation of the excited states of europium, terbium and ytterbium complexes by proximate energy-matched OH, NH and CH oscillators: an improved luminescence method for establishing solution hydration states. Journal of the Chemical Society. Perkin Transactions 2 (2001), 1999(3), 493-503

Modulation of the water exchange rates in Gd-DO3A complex by formation of ternary complexes with carboxylate ligands
Journal Article
Aime, S., Botta, M., Bruce, J., Mainero, V., Parker, D., & Terreno, E. (online). Modulation of the water exchange rates in Gd-DO3A complex by formation of ternary complexes with carboxylate ligands. Chemical Communications, 115-116

Ternary complexes of formula [Gd-DO3A-L-(H2O)] (where L is a carboxylate-containing ligand) display exchange lifetimes of the metal-coordinated water that can be modulated as a function of L.

Chiroptical, ESMS and NMR spectroscopic study of the interaction of enantiopure lanthanide complexes with selected self-complementary dodecamer oligonucleotides
Journal Article
Bobba, G., Dickins, R., Kean, S., Mathieu, C., Parker, D., Peacock, R., Siligardi, G., Smith, M., Williams, J., & Geraldes, C. (online). Chiroptical, ESMS and NMR spectroscopic study of the interaction of enantiopure lanthanide complexes with selected self-complementary dodecamer oligonucleotides. Journal of the Chemical Society-Perkin Transactions 2, 1729-1737

The interaction of Delta- and Lambda -Eu and Yb cationic complexes bearing an N-methylphenanthridinium chromophore with [(CG)(6)](2), [(AT)(6)], and [CGCGAATTCGCG](2) has been interrogated by ESMS, H-1 NMR, absorption, difference circular dichroism,... Read More about Chiroptical, ESMS and NMR spectroscopic study of the interaction of enantiopure lanthanide complexes with selected self-complementary dodecamer oligonucleotides.

Correlation of optical and NMR spectral information with coordination variation for axially symmetric macrocyclic Eu(III) and Yb(III) complexes: axial donor polarisability determines ligand field and cation donor preference
Journal Article
Dickins, R., Parker, D., Bruce, J., & Tozer, D. (online). Correlation of optical and NMR spectral information with coordination variation for axially symmetric macrocyclic Eu(III) and Yb(III) complexes: axial donor polarisability determines ligand field and cation donor preference. Dalton Transactions, 1264-1271

In Bleaney's theory of magnetic anisotropy, the second-order crystal field coefficient, B-o(2), is predicted to determine the dipolar NMR shift of paramagnetic lanthanide complexes in solution. This parameter has been measured directly, by analysing... Read More about Correlation of optical and NMR spectral information with coordination variation for axially symmetric macrocyclic Eu(III) and Yb(III) complexes: axial donor polarisability determines ligand field and cation donor preference.

The nature of the counter-anion can determine the rate of water exchange in a metal aqua complex
Journal Article
Barge, A., Botta, M., Parker, D., & Puschmann, H. (online). The nature of the counter-anion can determine the rate of water exchange in a metal aqua complex. Chemical Communications, 1386-1387

The nature of the counter-anion determines the water exchange rate for a series of cationic gadolinium complexes in aqueous solution, as a consequence of the ordering effect that the anion imposes on the structure of the second hydration sphere.

Controlling the variation of axial water exchange rates in macrocyclic lanthanide(III) complexes
Journal Article
Aime, S., Barge, A., Batsanov, A., Botta, M., Castelli, D., Fedeli, F., Mortillaro, A., Parker, D., & Puschmann, H. (online). Controlling the variation of axial water exchange rates in macrocyclic lanthanide(III) complexes. Chemical Communications, 1120-1121

The rate of axial water exchange in well-defined series of lanthanide complexes depends on the extent of second sphere hydration which is determined by complex hydrophobicity and the nature of the lanthanide ion and its counter-ion.

A pH-insensitive, ratiometric chemosensor for citrate using europium luminescence
Journal Article
Parker, D., & Yu, J. (online). A pH-insensitive, ratiometric chemosensor for citrate using europium luminescence. Chemical Communications, 3141-3143

A chemoselective sensor for the citrate anion has been devised, based on a new europium complex that offers ratiometric analysis of the long-lived emission.

Chemoselective signalling of selected phospho-anions using lanthanide luminescence
Journal Article
Atkinson, P., Bretonniere, Y., & Parker, D. (online). Chemoselective signalling of selected phospho-anions using lanthanide luminescence. Chemical Communications, 438-439

Selectivity in the binding of phosphorylated tyrosine residues to aqua-lanthanide complexes is signalled by changes in spectral form by luminescence emission and H-1 NMR spectroscopy.