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Study of Afterglow and Thermoluminescence Properties of Synthetic Opal-C Nanoparticles for In Vivo Dosimetry Applications

Published online by Cambridge University Press:  09 April 2013

Marlen Hernández-Ortiz ,
Laura S. Acosta-Torres ,
Rodolfo Bernal ,
Catalina Cruz-Vázquez  and
Víctor M. Castaño
Marlen Hernández-Ortiz
Affiliation:
Programa de Posgrado en Ciencia de Materiales del, Universidad de Sonora, A. P. 130, Hermosillo, Sonora 83000 México.
Laura S. Acosta-Torres
Affiliation:
Escuela Nacional de Estudios Superiores, Universidad Nacional Autónoma de México, Unidad León, Boulevard UNAM No. 2011 Predio el Saucillo y el Potrero C.P. 36969. León Guanajuato, México.
Rodolfo Bernal
Affiliation:
Departamento de Investigación en Física, Universidad de Sonora, A. P. 5-088, Hermosillo, Sonora 83190 México.
Catalina Cruz-Vázquez
Affiliation:
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, A. P. 130, Hermosillo, Sonora 83000 México.
Víctor M. Castaño
Affiliation:
Departamento de Ingeniería Molecular de Materiales, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Campus Juriquilla, Querétaro 76230 México.
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Abstract

Opal particles, with diameter ca. 80 nm, were synthesized by the Stöber method. Samples were exposed to 100 Gy of beta particle irradiation and its thermoluminescence (TL) emission was recorded. TL response presents good reproducibility, standard deviation 1 %. The glow curve displays two TL peaks 86 and 400 °C and the afterglow (AG) phenomenon is observed immediately after irradiation (< 150°C). The synthetic opal-C exhibits a linear dependence of AG response as function of dose from 0.25 to 8 Gy. This dose range is of interest for personal and clinical dosimetry. Moreover, a previous study indicates that cytotoxic and genotoxic effects caused by opal nanoparticles, did not induce unrepairable DNA damage neither a cellular harm. Therefore, our results show synthetic opal-C is a material useful for in vivo radiation dosimetry.

Keywords

biomaterialsensorluminescence
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1530: Symposium XX – Materials and Concepts for Biomedical Sensing , 2013 , mrsf12-1530-xx07-40
Copyright
Copyright © Materials Research Society 2013

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References

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