Radioluminescence from polymer dots based on thermally activated delayed fluorescence

Daiki Asanuma; Hieu Thi Minh Nguyen; Zuoyue Liu; Sachiko Tojo; Hajime Shigemitsu; Minoru Yamaji; Kiyohiko Kawai; Tadashi Mori; Toshiyuki Kida; Guillem Pratx; Mamoru Fujitsuka; Yasuko Osakada

doi:10.1039/D3NA00308F

Radioluminescence from polymer dots based on thermally activated delayed fluorescence†

Daiki Asanuma,‡^a Hieu Thi Minh Nguyen,

‡^b Zuoyue Liu,^a Sachiko Tojo,^a Hajime Shigemitsu,

^c Minoru Yamaji,

^e Kiyohiko Kawai,

^ad Tadashi Mori,

^c Toshiyuki Kida,

^c Guillem Pratx,

*^b Mamoru Fujitsuka

*^af and Yasuko Osakada

*^afg

Author affiliations

* Corresponding authors

^a SANKEN, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
E-mail: yosakada@sanken.osaka-u.ac.jp, fuji@sanken.osaka-u.ac.jp

^b Department of Radiation Oncology and Medical Physics, Stanford University, 300 Pasteur Dr., Stanford, CA 94305, USA
E-mail: pratx@stanford.edu

^c Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

^d Department of Life Science and Technology, Tokyo Institute of Technology, B-52, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8501, Japan

^e Division of Molecular Science, Graduate School of Science and Engineering, Gunma University, Ota, Gunma 373-0057, Japan

^f Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

^g Institute for Advanced Co-Creation Studies, Osaka University, Yamadagaoka 1-1, Suita, Osaka 565-0871, Japan

Abstract

We demonstrate that polymer dots doped with thermally activated delayed fluorescence (TADF) molecules clearly exhibit blue radio-luminescence upon hard X-ray and electron beam irradiation, which is a new design for nano-sized scintillators.

Nanoscale Advances

Radioluminescence from polymer dots based on thermally activated delayed fluorescence†

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Radioluminescence from polymer dots based on thermally activated delayed fluorescence

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