Abstract The response of the photochromic compound 2,3-dihydro-2-spiro-4’-[8′-aminonaphtalen-1′(4′H)-on]perimidine (PNO-p) dispersed in a polystyrene (PS) and a polymethyl methacrylate (PMMA) film to X-ray irradiation was evaluated with the aim to develop an organic dosimeter. The effect of co-doping with the organic phosphor 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (b-PBD) on the sensitivity to X-ray irradiation was also determined. The photochromic reaction of PNO-p was induced by X-ray irradiation. The sensitivity of PNO-p in the PMMA films to X-ray irradiation was enhanced by co-doping with b-PBD. The stability of the isomer of PNO-p generated by photochromic reaction (open form of PNO-p) at room temperature under 575 nm irradiation was also investigated. Only 0.4% of the open form of PNO-p in the PS film was changed to the closed form at room temperature for 1 h. In addition, the open form of PNO-p was more stable against 575 nm irradiation in the PS films than in the PMMA film.

中文翻译：

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2,3-dihydro-2-spiro-4'-[8'-aminonaphtalen-1'(4'H)-on]perimidine 对剂量计的适用性

摘要 光致变色化合物 2,3-dihydro-2-spiro-4'-[8'-aminonaphtalen-1'(4'H)-on] perimidine (PNO-p) 分散在聚苯乙烯 (PS) 和评估聚甲基丙烯酸甲酯 (PMMA) 薄膜对 X 射线辐射的影响，目的是开发有机剂量计。与有机磷光体 2-(4-叔丁基苯基)-5-(4-联苯基)-1,3,4-恶二唑 (b-PBD) 共掺杂对 X 射线照射灵敏度的影响也是决定。PNO-p 的光致变色反应是由 X 射线照射引起的。PMMA 薄膜中 PNO-p 对 X 射线辐射的敏感性通过与 b-PBD 共掺杂增强。还研究了在室温下在 575 nm 照射下通过光致变色反应（PNO-p 的开放形式）生成的 PNO-p 异构体的稳定性。只有 0。PS薄膜中4%的开放形式的PNO-p在室温下1小时变为封闭形式。此外，开放形式的 PNO-p 在 PS 薄膜中比在 PMMA 薄膜中对 575 nm 辐射更稳定。