Leuco-Based Composite Resin Dosimeter Film

Takato Iwata; Kenji Kinashi; Hoan Ngoc Doan; Phu Phong Vo; Wataru Sakai; Naoto Tsutsumi

doi:10.1021/acsomega.9b00435

Leuco-Based Composite Resin Dosimeter Film

ACS Omega. 2019 Jun 7;4(6):9946-9951. doi: 10.1021/acsomega.9b00435. eCollection 2019 Jun 30.

Authors

Takato Iwata¹, Kenji Kinashi¹, Hoan Ngoc Doan¹, Phu Phong Vo¹, Wataru Sakai¹, Naoto Tsutsumi¹

Affiliation

¹ Master's Program of Innovative Materials, Doctor's Program of Materials Chemistry, Graduate School of Science and Technology, and Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan.

Abstract

A polystyrene (PS)-based composite resin dosimeter (CRD) film comprising 2-(phenylamino)-6-(dipentylamino)-3-methylspiro[9H-xanthene-9,3'-phthalide] (Black305) fluoran leuco dye, cerium-doped yttrium aluminum perovskite YAlO₃:Ce (YAP:Ce) scintillator, and 2-(4-methoxystyryl)-4,6-bis(trichloromethyl)-1,3,5-triazine (MBTT) photoacid generator was developed for the visualization of X-ray exposure doses in the range of 18-170 Gy. The color of the CRD film changed from yellow to black within this range based on the X-ray exposure dose. A CRD film based on Black305/YAP:Ce/MBTT/PS could be used to produce a dosimeter with various color change sensitivities by controlling the thermodynamic parameters of the constituent materials. A CRD film is a promising tool for measuring the X-ray exposure dose and can be used as an alternative to the existing radiochromic dosimeters.