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1
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Jahn-Teller and Herzberg-Teller Couplings in Absorption and Magnetic Circular Dichroism Spectra of (E+E)∗e Systems

100%
Pilch M., Pawlikowski M.
Acta Physica Polonica A
|
1992
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vol. 81
|
issue 6
619-627
EN
Model calculations are reported for an (E+E)∗e system including linear and quadratic Jahn-Teller and Herzberg-Teller vibronic interactions. The effects of these interactions on magnetic circular dichroism and absorption spectra are compared with experimental observations on CoF^{3-}_{6} salts.
2
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Influence of Configuration Interaction on the Magnetic Circular Dichroism Spectra of C_{60} Molecule

100%
Pilch M., Pawlikowski M.
Acta Physica Polonica A
|
1993
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vol. 84
|
issue 6
1049-1054
EN
A_{1}/D_{0} and D_{0} characteristics of magnetic circular dichroism and absorption spectra are studied for the low-energy A_{g} → T_{1u} transitions in the C_{60} molecule in terms of the self-consistent field Parieser-Parr-Pople method applied in the full configuration interaction-1 treatment. The effects are discussed at different levels of configuration interaction and the results are compared to the earlier ones obtained From the CNDO/S method. We argue that the earlier treatment fails to account correctly for the experimental magnetic circular dichroism and absorption spectra of C_{60} molecule. This is most probably due to deficiency of the configuration interaction basis set and/or to the intrinsic parametrization of complete neglect of differential overlap method.
3
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Circular Dichroism Study of the Light-Harvesting PCP Complexes Within the Vibronic Multistate Dimer Theory

100%
Pilch M., Pawlikowski M.
Acta Physica Polonica A
|
1991
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vol. 79
|
issue 5
619-626
EN
Chiral properties of peridinin-chlorophyll-protein (PCP) light-harvesting complexes are studied in terms of vibronic dimer theory previously applied to study certain structural aspects of α-crustacyanin pigments. On the base of CD spectra it is shown that the peridinin dimer acts as a chiral group in PCP complexes and its geometrical structure is such that the peridinin monomers cannot be coplanar. Certain observations concerning the energy transfer process in PCP complexes in vivo are also made.
4
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Dielectric and Mechanical Properties of BaBi2(Nb0.99V0.01)2O9 Ceramics

81%
Kozielski L., Adamczyk M., Pawełczyk M., Pilch M.
Archives of Metallurgy and Materials
|
2011
|
issue 4
5
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Influence Of Thermal Treatment On Relaxor Properties Of BaBi2Nb2O9 Ceramics

81%
Adamczyk M., Pilch M., Pawełczyk M.
Archives of Metallurgy and Materials
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2015
|
issue 2
6
Content available remote

Controlling Structural and Functional Features of Photosynthetic Antenna

61%
Fiedor L., Fiedor J., Pilch M., Susz A., Tworzydło J., Michalik M.
Acta Physica Polonica A
|
2012
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vol. 122
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issue 2
255-258
EN
In order to gain control over the assembly and functioning of photosynthetic antenna, we have developed methods to manipulate pigment composition of bacterial LH1 complexes via their reconstitution with modified bacteriochlorophylls or carotenoids, major photoactive cofactors of these antennae. In the present work we show how the reconstitution and pigment exchange approach is applied to control structural and functional parameters of LH1 and its subunits. The size of the subunits and the energy of the first excited singlet state can be controlled via the use of detergent while the thermodynamics of LH1 formation can be modified using carotenoids and/or a co-solvent. Carotenoids affect the efficiency of the intracomplex energy transfer, while the replacement of native bacteriochlorophyll a with its Ni-substituted analog allows one to control the excited state properties of LH1. These results show that LH1 is a very promising model system applicable for the design of bio-inspired device performing solar energy conversion.
7
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Study of Phase Transition in Bi3TiNbO9-BaBi2Nb2O9 Ceramics

52%
Adamczyk M., Kusz J., Hofmeister W., Zubko M., Kozielski L., Pilch M., Bochenek D., Wodecka-Duś B.
Archives of Metallurgy and Materials
|
2016
|
issue 3
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