INFLUENCE OF THE SKELETON HIERARCHICAL ORGANIZATION ON ELECTRONIC STATE OF IONS IN BONE MATRIX

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The authors suggested the 3D-superlattice (3DSL) model to describe the effect of coplanar assembly of the hydroxyapatite (HA) nanocrystallites on local electronic state of ions in mineralized bone. This model is based on the main structural and functional relationships between adjacent levels of the hierarchical organization of bone tissue. In the framework of the 3DSL model the authors predicted the distinct assembly-to-crystal red shift of the unoccupied electronic states located near the bottom of the conduction band in HA and dependence of this shift on the ratio of the thickness of the hydrated layer to the crystallite size. To check these predictions the experimental X-ray absorption studies of native bone are performed near the Ca2р1/2,3/2-, P2р1/2,3/2- и O1s edges. Comparison of the measured spectra with the known spectra of the reference compounds has confirmed appearance of the distinct assembly-to-crystal red shift. The observed effect is the ground for development of new diagnostic methods for bone status and imaging changes in the local electronic structure of bone tissue by using ultrasoft X-ray absorption spectroscopy and measuring the assembly-tocrystal shifts. The experimental data analysis proved the applicability of the 3DSL model for better understanding of the hierarchical organization of bone at nanolevel.

作者简介

A. Avrunin

Vreden Russian Research Institute of Traumatology and Orthopedics
8, ul. Akad. Baykova, St. Petersburg, 195427, Russia

编辑信件的主要联系方式.
Email: a_avrunin@mail.ru
Dr. Sci. (Med) Senior Researcher of the Scientific Department of the Diagnosis and Treatment of Musculoskeletal System Diseases and Injuries 俄罗斯联邦

A. Pavlychev

Saint-Petersburg State University 7-9, Universitetskaya nab., St. Petersburg, 199034, Russia

Email: a_avrunin@mail.ru
Dr. Sci. (Phys.-Math) Professor, Solid State Electronics Department, Faculty of Physics 俄罗斯联邦

A. Doctorov

All-Russian Research Institute of Medical and Aromatic Plants
7, str. 1, ul. Grina, Moscow, 117216, Russia

Email: a_avrunin@mail.ru
Dr. Sci. (Med) Professor the Head of Morphology Department 俄罗斯联邦

A. Vinogradov

Saint-Petersburg State University 7-9, Universitetskaya nab., St. Petersburg, 199034, Russia

Email: a_avrunin@mail.ru
Dr. Sci. (Phys.-Math) Professor, Solid State Electronics Department, Faculty of Physics 俄罗斯联邦

D. Samoilenko

Saint-Petersburg State University 7-9, Universitetskaya nab., St. Petersburg, 199034, Russia

Email: a_avrunin@mail.ru
Master Student, Faculty of Physics 俄罗斯联邦

G. Svirsky

Saint-Petersburg State University 7-9, Universitetskaya nab., St. Petersburg, 199034, Russia

Email: a_avrunin@mail.ru
Master Student, Faculty of Physics 俄罗斯联邦

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