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I am a PhD student working at the interface of chirality, light and spin at the Cavendish Laboratory, University of Cambridge. I am supervised by Professor Sir Richard H. Friend.
Research Interests
I am interested in developing bright, optically and electrically addressable spin systems in organic molecular materials to uncover new regimes of spin–light interaction. My research focuses on luminescent diradicals with tunable spin coupling and magneto-optical responses at room temperature, and on chiral supramolecular semiconductors that enable spin-polarized charge injection and circularly polarized emission. By designing materials where spin, symmetry, and light are intrinsically linked, I aim to build interfaces with organic semiconductors that offer conceptually novel physics and practical technologies for low-field quantum sensing, chiral spintronics, and next-generation optoelectronics.
email: rc804[at]cam.ac.uk
Diradical_response_Reallife.mp4What youre seeing: Real-time Magnetic field modulated Photoluminescence (look at screen) from a diradical (purple-red film) using a fridge magnet!
Video credits: Kueyoung Kim and Me!
Relevant work: Rituparno Chowdhury, Alistair Inglis, Lucy E. Walker, Petri Murto, ..., Alexei Chepelianskii*, Sam Bayliss*, Hugo Bronstein*, Richard Friend*, et al. "Room temperature optical control of spin states in organic diradicals." arXiv preprint arXiv:2510.09440 (2025).
Recent Highlights
Recent Highlights
[18/10/2025] Our recent expeditions to study ferromagnetically coupled bright diradicals is now on ArXiv! Have a look at how we managed to control the luminescence from diradicals at room temperatures within 2 mT of magnetic field (about the amount provided by a fridge magnet a few centimeters away from an object).
[30/09/2025] Our recent work exploring the intermolecular charge separation between 2 single-radical emitter sites, led by Biwen Li, is now out in Nature Materials! We show that we can make some really nice photodetectors and photodiodes with this open-shell material, all powered by bright spins! Congratulations Biwen!
[29/07/2025] Our discovery of magnetic control of luminescence in antiferromagnetic diradicals is out now in Nature Chemistry! We showed how an unprecedented bright transition across a Hubbard-U gap can allow us to optically read and write spin states!
[14/03/2025] Our recent expeditions into chirality has now led to the discovery of the first fully characterised chiral semiconductor with a large degree of circular polarisation alongside unexpectedly high device efficiency! This is now out in Science!
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