| Issue |
J. Phys. IV France
Volume 03, Number C8, Décembre 1993
IX International Conference on Small Angle Scattering
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|
|---|---|---|
| Page(s) | C8-361 - C8-364 | |
| DOI | https://doi.org/10.1051/jp4:1993874 | |
IX International Conference on Small Angle Scattering
J. Phys. IV France 03 (1993) C8-361-C8-364
DOI: 10.1051/jp4:1993874
1 Department of Physics, P.O. Box 9, University of Helsinki, 00014 Helsinki, Finland
2 Department of Chemistry, P.O. Box 6, University of Helsinki, 00014 Helsinki, Finland
3 Stanford Synchrotron Radiation Laboratory, Bin 69, Stanford, P.O. Box 4349, CA 94305, U.S.A.
© EDP Sciences 1993
J. Phys. IV France 03 (1993) C8-361-C8-364
DOI: 10.1051/jp4:1993874
Fractal surface of amorphous platinum pyrimidine complexes in solid state as revealed by anomalous small angle scattering
R. SERIMAA1, T. LAITALAINEN2, M.J. REGAN3 and A. BIENENSTOCK31 Department of Physics, P.O. Box 9, University of Helsinki, 00014 Helsinki, Finland
2 Department of Chemistry, P.O. Box 6, University of Helsinki, 00014 Helsinki, Finland
3 Stanford Synchrotron Radiation Laboratory, Bin 69, Stanford, P.O. Box 4349, CA 94305, U.S.A.
Abstract
The amorphous platinum greens, which were synthesized from Pt(NH3)2(H2O)2(NO3)2 or from Pt(NH3)2(H2O)2(SO4) and uridine, 5-bromouridine and ftorafur, were studied in the solid state by anomalous small angle x-ray scattering. The intensity curves exhibit a power-law dependence, which is likely to originate from large aggregates that are quite compact yet have rough surfaces. The surface fractal dimension varied between 2.2-2.7. The radius of gyration of the particles in the aqueous reaction mixture before precipitation was only about 5 Å. Thus it was concluded that the aggregates barely nucleate during the reaction and grow during the precipitation with acetone.
© EDP Sciences 1993