Synthesis and Characterization of Multifunctional Fluorescent-Magnetic Platinum Nanoclusters

Shin-Ichi Tanaka; Kohei Yamagami; Kazuhisa Sato; Hidehiro Yasuda; Hirohiko Niioka; Hiroki Wadati

doi:10.1021/acsomega.4c06765

Synthesis and Characterization of Multifunctional Fluorescent-Magnetic Platinum Nanoclusters

ACS Omega. 2024 Dec 13;9(51):50349-50356. doi: 10.1021/acsomega.4c06765. eCollection 2024 Dec 24.

Authors

Shin-Ichi Tanaka¹, Kohei Yamagami², Kazuhisa Sato^{3

4}, Hidehiro Yasuda^{3

4}, Hirohiko Niioka⁵, Hiroki Wadati^{6

7}

Affiliations

¹ National Institute of Technology, Kure College, 2-2-11 Agaminami, Kure, Hiroshima 737-8506, Japan.
² Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-gun, Sayo-cho, Hyogo 679-5198, Japan.
³ Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
⁴ Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
⁵ Graduate School of Information Science and Technology, Osaka University, TechnoAlliance Building C607, 2-8 Yamadaoka, Suita, Osaka 565-0871, Japan.
⁶ Department of Material Science, Graduate School of Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan.
⁷ Institute of Laser Engineering, Osaka University, 2-8 Yamadaoka, Suita, Osaka 565-0871, Japan.

Abstract

There is great interest in the development of new multifunctional fluorescent-magnetic nanomaterials for use as multimodal diagnostic imaging probes and site-specific drug delivery tools. Metal nanoclusters (NCs) have been reported to possess either fluorescent or magnetic properties, but not both. In this paper, we report the synthesis and characterization of multifunctional fluorescent-magnetic Pt NCs. Our synthesized NCs (0.8 ± 0.2 nm in diameter) exhibit both bright red fluorescence (excitation: 535 nm, emission: 620 nm) and ferromagnetic behavior with hysteresis, which represents a noteworthy and significant advance in the development of Pt NCs. Our findings suggest the potential of our NCs to be applied in multimodal fluorescent-magnetic nanomaterials for biomedical applications.