Read the original press release for more details at the following link (The University of Tokyo).
https://www.s.u-tokyo.ac.jp/en/press/11244/
Points
- ・ For the first time, researchers have demonstrated the optical detection of electron spins of a photo-excited triplet state generated in a MOF.
- ・ Future work is expected to achieve highly sensitive quantum sensing through the integration of MOFs and optical detection.
Optical readout of triplet spins in a MOF
Abstract
A research group led by graduate students Miku Inoue and Wataru Ishii and Professor Nobuhiro Yanai at the Graduate School of Science, The University of Tokyo, in collaboration with Postdoctoral Researcher Alistair Inglis and Reader Sam L. Bayliss of University of Glasgow; Thomas W. Bradbury, a Ph.D. student, and Professor Jenny Clark at the University of Sheffield; Assistant Professor Hiroki Nagashima and Associate Professor Kiminori Maeda at Saitama University; Dr. Yoshitaka Aoyama and Dr. Yusuke Nishiyama of JEOL Ltd.; Senior Researcher Mizuho Asada and Team Leader Toshikazu Nakamura from the Institute for Molecular Science; and Professor Yasuhiro Kobori of Kobe University, have, for the first time, demonstrated the optical detection of electron spins in MOFs using optical detection magnetic resonance measurements.
Optically detected magnetic resonance (ODMR) has attracted attention as a useful method for reading out spin qubits in quantum sensing. In this study, the research team synthesized a metal-organic framework (MOF) utilizing a porphyrin derivative as a ligand, and successfully achieved the first optical detection of photo-excited triplet spins generated by photoexcitation. Although MOFs have been viewed as promising materials for quantum sensing, the optical detection of spins, which is a key requirement for realizing quantum sensing, had not previously been achieved within a MOF. This study represents an important step toward highly sensitive chemical quantum sensing combining MOFs and ODMR.
