TY - JOUR
T1 - Radiochromic properties of organic films based on a diarylethene molecule
AU - Asai, Kohei
AU - Koshimizu, Masanori
AU - Fujimoto, Yutaka
AU - Asai, Keisuke
N1 - Funding Information:
This research was partially supported by a Grant-in-Aid for Challenging Research (Exploratory), Japan (No. 17K19082 , 2017–2018) and a Grant-in-Aid for Scientific Research (A), Japan (No. 18H03890 , 2018–2021) and grants from Chubu Electric Power Co., Japan Inc. and The Hitachi Global Foundation, Japan . A part of this research is based on the Cooperative Research Project of Research Center for Biomedical Engineering, Ministry of Education, Culture, Sports, Science and Technology.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/2/21
Y1 - 2020/2/21
N2 - Poly(methyl methacrylate) (PMMA) films containing photochromic molecules, 2,3-bis(2,4,5-trimethyl-3-thienyl)maleimide (BTTM), were fabricated and assessed for their radiochromic behavior. The rate of the absorbance with dose for the PMMA films was directly proportional to BTTM concentration. The peak wavelength of the absorption band was slightly different from that upon UV irradiation. In addition, the radiation-induced state was not stable at room temperature in contrast to the case of UV irradiation. With the addition of a fluorescent organic compound, 2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (b-PBD), an increase in the rate of absorbance was enhanced by a factor of two, because BTTM was additionally changed upon absorption of scintillation from b-PBD. The radiation-induced state at room temperature was stable at room temperature with the addition of b-PBD.
AB - Poly(methyl methacrylate) (PMMA) films containing photochromic molecules, 2,3-bis(2,4,5-trimethyl-3-thienyl)maleimide (BTTM), were fabricated and assessed for their radiochromic behavior. The rate of the absorbance with dose for the PMMA films was directly proportional to BTTM concentration. The peak wavelength of the absorption band was slightly different from that upon UV irradiation. In addition, the radiation-induced state was not stable at room temperature in contrast to the case of UV irradiation. With the addition of a fluorescent organic compound, 2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (b-PBD), an increase in the rate of absorbance was enhanced by a factor of two, because BTTM was additionally changed upon absorption of scintillation from b-PBD. The radiation-induced state at room temperature was stable at room temperature with the addition of b-PBD.
KW - Dosimetry
KW - Photochromism
KW - Radiochromism
KW - Sensitization
UR - http://www.scopus.com/inward/record.url?scp=85061236750&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061236750&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2019.01.054
DO - 10.1016/j.nima.2019.01.054
M3 - Review article
AN - SCOPUS:85061236750
VL - 954
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
M1 - 161828
ER -