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Functional Materials based on Magnetic Metal Complexes and Metal Oxides and Materials for Green Transformation (GX)
Hot drinks and biscuits will be available from 3:30pm (Hume-Rothery Meeting Room)
Hybrid: Panopto link: https://ox.cloud.panopto.eu/Panopto/Pages/Viewer.aspx?id=7b93f1c6-1887-4056-b578-af5b006d715f .
In this paper, I report novel magnetic functionalities such as humidity-induced magnetization, light-induced spin-crossover magnetic phenomenon, chiral photomagnetism, photoswitching of magnetization-induced second harmonic generation, and light-induced switching of superionic conductivity, using cyanide-bridged metal assemblies including Prussian blue analogues. Furthermore, by nanoscale chemical synthesis, novel functional materials were synthesized from abundant elements. For example, epsilon-iron oxide (ε-Fe2O3) shows a huge coercive field and high-frequency millimeter wave absorption [BBC, Science Museum London] and has potential for a novel recording method of focused millimeter wave assisted magnetic recording, F-MIMR [The Economist]. As another example, we have discovered lambda-trititanium-pentoxide (λ-Ti3O5), which exhibits photo-induced metal-semiconductor transition at room temperature as well as long-term heat storage properties suggesting a novel concept of preserving heat energy for a prolonged period [AFP, NHK]. Such metal oxide materials contribute to solving environmental and energy issues and to promoting green transformation (GX). Here, I will introduce the functional materials developed in our group. Additionally, I will also introduce the PhD project “Fostering Advanced Human Resources to Lead Green Transformation” supporting 600 PhD students of all fields at the University of Tokyo.
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1285 (1999) (Nature “News & Views”).
[3] S. Ohkoshi, et al., Nature Chemistry, 3, 564 (2011).
[4] S. Ohkoshi, et al., Nature Photonics, 8, 65 (2014).
[5] S. Ohkoshi, et al., Nature Chemistry,
12, 338-344 (2020).
[6] A. Namai, S. Ohkoshi, et al., Nature Communications, 3, 1035 (2012).
[7] S. Ohkoshi, et al., Advanced Materials, 32, 2004897 (2020).
[8] S. Ohkoshi, et al.,
Nature Chemistry, 2, 539 (2010).
[9] H. Tokoro, S. Ohkoshi, et al., Nature Communications, 6,
7037 (2015).
[10] T. Nakamura, S. Ohkoshi, et al., Science Advances, 6, 5264 (2020).
[11] C. Mariette, et al., Nature Communications, 12, 1239 (2021).
Ohkoshi Laboratory:
www.chem.s.u-tokyo.ac.jp/users/ssphys/english/index.html
“Fostering Advanced Human Resources to Lead Green Transformation” Project:
www.cis-trans.jp/spring_gx/index-e.htm
Date:
1 December 2022, 16:00
Venue:
Hume-Rothery Building, Parks Road OX1 3PH
Venue Details:
Lecture Theatre - fully accessible
Speaker:
Professor Shin-ichi (Ohkoshi)
Organising department:
Department of Materials
Organiser:
Lorraine Laird (Department of Materials)
Organiser contact email address:
communications@materials.ox.ac.uk
Host:
Professor Lapo Bogani (University of Oxford)
Part of:
Materials Departmental Colloquia
Booking required?:
Not required
Cost:
** Free **
Audience:
Public
Editor:
Lorraine Laird
