Poly [1,1′-bis(ethynyl)-4,4′-biphenyl(bis-tributylphosphine)Pt(II)] solutions used as low dose ionizing radiation dosimeter

Applied Physics Letters Volume: 102 Issue: 24 Published: 2013

28 de junho de 2013 CDMF Artigo 0

poly-11-bisethynyl-44-biphenylbis-tributylphosphineptii-solutions-used-as-low-dose-ionizing-radiation-dosimeter — Photoluminescence spectra of the solutions irradiated at doses below 1 Gy. The insert shows the absorbance of the solutions before and after irradiate with 0.8 Gy.

Writers: E. S. Bronze-Uhle; A. Batagin-Neto; D. M. Fernandes; I. Fratoddi; M. V. Russo; and C. F. O. Graeff

Keywords: Dosimetry; Emission spectra; Polymers; Absorption spectra; Organometallic compounds

Abstract: In this work, the effect of gamma radiation on the optical properties of polymetallayne poly[1,1′-bis(ethynyl)-4,4′-biphenyl(bis-tributylphosphine)Pt(II)] (Pt-DEBP) in chloroform solution is studied. The samples were irradiated at room temperature with doses from 0.01 Gy to 1 Gy using a 60Co gamma ray source. A new band at 420 nm is observed in the emission spectra, in superposition to the emission maximum at 398 nm, linearly dependent on dose. We propose to use the ratio of the emission amplitude bands as the dosimetric parameter. This method proved to be robust, accurate, and can be used as a dosimeter in medical applications.

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DOI: 10.1063/1.4812186

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