Optical properties of RbMn<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Er</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

Iverson, M. V.; Sibley, W. A.

doi:10.1103/physrevb.21.2522

Cited by 20 publications

(7 citation statements)

References 38 publications

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“…The great majority of previous catalytic antibody studies have utilized monoclonal antibodies. In contrast, antibody catalysis has been reported in polyclonal antibody preparations isolated from the sera of immunized animals [8][9][10][11][12][13][14][15][16][17][18][19]. Compared with monoclonal antibody studies, the investigation of antibody catalysis with polyclonal antibodies is substantially faster and far less expensive.…”

Section: Introductionmentioning

confidence: 99%

“…A picture is emerging of polyclonal antibody catalysis that indicates that high-affinity polyclonal samples are functionally surprisingly homogeneous [18][19][20]. Previous studies have uncovered homogeneous binding activity [20] as well as catalytic activity [15,[17][18][19] among polyclonal antibodies isolated from within an individual immunized animal. A related question involves the relative variability of catalytic activity observed in different animals immunized with the same transition state analogue hapten.…”

Section: Introductionmentioning

confidence: 99%

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Polyclonal antibody catalytic variability

Stephens

Thomas

Stanton

et al. 1998

Biochemical Journal

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We have performed a systematic variability study of polyclonal antibody catalysis by using five rabbits immunized with the same hapten. Important results from this work are the following. (1) Similarities were observed in the catalytic polyclonal antibodies derived from all five rabbits. Four of the five rabbits produced polyclonal samples that were nearly the same in terms of catalytic activity, whereas the fifth rabbit, designated as rabbit 2, displayed a somewhat higher level of catalytic activity. The catalytic activities (as kcat/kuncat) of these polyclonal samples were similar to that from the best murine monoclonal antibody that had been previously elicited by the same hapten. (2) Titre was not an accurate indicator of polyclonal antibody catalytic activity. (3) A mathematical analysis to describe a distribution of Michaelis-Menten catalysts was performed to help interpret our results. (4) Kinetic analysis indicated that the binding parameters of the different samples were remarkably homogeneous, because one or two components were all that were required to fit the on-rate and off-rate data satisfactorily. Interestingly, the most active catalytic polyclonal sample, that from rabbit 2, displayed the slowest off-rate (so slow it could not be measured) and thus the highest overall affinity. (5) Catalytic analysis of eluted fractions of antibody from a substrate column indicated that each polyclonal sample was also relatively homogeneous in terms of catalytic parameters. The main conclusion of our study is that for this hapten-animal system, the overall catalytic immune response is relatively consistent at two levels. Consistent catalytic activity was observed between the polyclonal samples elicited in the different animals, and the elicited hapten-specific polyclonal antibodies were relatively homogeneous in terms of binding and catalytic parameters within each immunized animal. The observed similarities of the catalytic activity in the different animals is surprising, because the immune response is based on specific binding of antibodies to hapten. There is no known selective pressure to maintain consistent levels of catalytic activity. Our results can therefore be interpreted as providing evidence that for this hapten there is a fixed relationship between hapten structure and catalytic activity and/or consistent genetic factors that dominate the catalytic immune response.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polyclonal antibody catalytic variability

Stephens

Thomas

Stanton

et al. 1998

Biochemical Journal

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“…7. These transitions were mainly attributed to coupled interactions of the Mn 2+ ion with the surrounding octahedral array of F À ions [41,42].…”

Section: Reaction Mechanismmentioning

confidence: 98%

Shape-selected synthesis, characterization and optical properties of KMnF3 micropolyhedra, microspheres and hollow microspheres

Sheng

Tang

et al. 2009

Journal of Fluorine Chemistry

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“…I n [87] the temperature dependence of the lifetime of Er3+ ion excited states in RbMnF, crystals has been investigated. The authors determine the heat-release constant from the maximum positions of luminescence and absorption bands, developed a single-oscillator model of adiabatic potentials for the electronic states of the Er3+ ion, and on this basis calculated WNR.…”

Section: Temperature Dependence Of Nonradiative Transition Probabilitiesmentioning

confidence: 99%

“…The authors determine the heat-release constant from the maximum positions of luminescence and absorption bands, developed a single-oscillator model of adiabatic potentials for the electronic states of the Er3+ ion, and on this basis calculated WNR. The experimental data of [87] are of great interest, however, the values a = 1 to 2 obtained for the inter-manifold 411112 -+ 4115,2, 4F9i2 -+ 41912, and 4 1~/ 2 -+ 41111z channels by two orders of magnitude exceed those typical for this value for 4f-4f transitions [45]. Apparently, the theoretical model used in [87] would be appropriate for activator ions with strong EPI (for example, for d ions), because the expression for the Stokes shift at constant a covers wide (multiphonon) bands and not the zero-phonon lines.…”

Section: Temperature Dependence Of Nonradiative Transition Probabilitiesmentioning

confidence: 99%

Nonradiative Transitions of the Trivalent Lanthanides in Insulating Laser Crystals

Perlin¹,

Kaminskii

1985

Physica Status Solidi (b)

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on the occasion of his 80th birthday Contents 1. Introduction 2. Linear-deformational mechanism of nonradiative relaxation 3. Single-mode approximation and the "energy gap law" 4. Nonlinear electron-phonon interaction as a reason for nonradiative transitions 5 . Theoretical evaluation of nonradiative transition probabilities. Comparison of theory with ezperiment 6. Temperature dependence of nonradiative transition probabilities 7. Conclusion References 2, I n [ 20,21] only the deformational effect was taken into account. A review on the mathematical methods of the multiphonon transition theory is given in [22].

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Optical properties of RbMnF3:Er3+

Cited by 20 publications

References 38 publications

Polyclonal antibody catalytic variability

Polyclonal antibody catalytic variability

Shape-selected synthesis, characterization and optical properties of KMnF3 micropolyhedra, microspheres and hollow microspheres

Nonradiative Transitions of the Trivalent Lanthanides in Insulating Laser Crystals

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