Radioluminescence from polymer dots based on thermally activated delayed fluorescence

Asanuma, Daiki; Nguyen, Hieu T.; Liu, Zuoyue; Tojo, Sachiko; Shigemitsu, Hajime; Yamaji, Minoru; Kawai, Kiyoshi; Mori, Tadashi; Kida, Toshiyuki; Pratx, Guillem; Fujitsuka, Mamoru; Osakada, Yasuko

doi:10.1039/d3na00308f

Nanoscale Adv.

2023

DOI: 10.1039/d3na00308f

|View full text |Cite

Radioluminescence from polymer dots based on thermally activated delayed fluorescence

Daiki Asanuma

Hieu T. Nguyen

Zuoyue Liu

et al.

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...

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

The Incorporation of CsCu₂I₃ Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators

Haposan,

Makowski,

Kowal

et al. 2024

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

CsCu2I3 CsCu2I3 lead‐free nanocrystals (NCs) have recently garnered significant interest for their outstanding optical and scintillation characteristics, particularly for X‐ray imaging applications. In this study, CsCu2I3 NCs are mixed with polydimethylsiloxane (PDMS) resin in the form of a pellet to protect against environmental factors such as moisture. The resulting sample exhibits a light yield of up to 2 ph keV−1 and an excellent energy resolution of 13% for γ‐ray excitation at 662 keV at room temperature. Additionally, the CsCu2I3 NCs–PDMS resin shows no afterglow and has a negligible trap density. Herein, high stability at low irradiation intensities and reasonable stability at higher intensities are demonstrated. Moreover, the sample features a fast component scintillation decay times of 3.55 ns, which is slightly faster than that of (BZA)2PbBr4. This outcome possesses promising combination in designing lightweight and flexible hybrid PDMS‐based hybrid materials scintillators. These scintillation properties of CsCu2I3 NCs–PDMS can be a promising candidate for affordable and flexible screens for X‐ and γ‐ray photon‐counting computed tomography.

show abstract

The Incorporation of CsCu₂I₃ Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators

Haposan,

Makowski,

Kowal

et al. 2024

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

show abstract

Electron beam-induced white emission from iridium complexes-doped polymer dots

Liu,

Su,

Asanuma

et al. 2024

Photochem Photobiol Sci

View full text Add to dashboard Cite

Radiation detection plays an important role in diverse applications, including medical imaging, security, and display technologies. Scintillators, materials that emit light upon exposure to radiation, have garnered significant attention due to their exceptional sensitivity. Previous research explored polymer dots (P-dots) doped with iridium complexes as nano-sized scintillators for radiation detection, but these were constrained to emitting specific colors like red, green, and blue, limiting their utility. Recently, there has been a breakthrough in the development of white light emitters stimulated by UV–visible light. These emitters exhibit a broad spectral range in the visible wavelength, enhancing contrast and simplifying detection by visible-light sensors. Consequently, the quest for white color scintillators in radiation detection has emerged as a promising avenue for enhancing scintillation efficiency. In this study, we present a novel approach by applying P-dots doped with two iridium complexes to create white light-emitting nano-sized scintillators. These scintillators offer a wider spectral coverage within the visible-light wavelength range. Under UV light (365 nm) excitation, our synthesized P-dots exhibited remarkable white light emission. Moreover, when excited by electron beam irradiation, we observed the clear emission close to white emission which is valuable for improving the detection of radiation.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Radioluminescence from polymer dots based on thermally activated delayed fluorescence

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...

Cited by 2 publications

References 18 publications

The Incorporation of CsCu₂I₃ Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators

The Incorporation of CsCu₂I₃ Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators

Electron beam-induced white emission from iridium complexes-doped polymer dots

Contact Info

Product

Resources

About

Radioluminescence from polymer dots based on thermally activated delayed fluorescence

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...

Cited by 2 publications

References 18 publications

The Incorporation of CsCu2I3 Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators

The Incorporation of CsCu2I3 Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators

Electron beam-induced white emission from iridium complexes-doped polymer dots

Contact Info

Product

Resources

About

The Incorporation of CsCu₂I₃ Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators

The Incorporation of CsCu₂I₃ Nanocrystals into Polydimethylsiloxane Matrix for X‐ and γ‐Ray Scintillators