Mr Xiaoming Zhao

Mr Xiaoming Zhao

Research Student
Address:
School of Physics and Astronomy
Queen Mary, University of London
327 Mile End Road, London, E1 4NS

Room: 211
Email:

Project Description

Title: N@C60 for Dynamic Nuclear Polarisation

Abstract: Nuclear magnetic resonance (NMR) is an amazingly powerful technique for studying everything from drug molecules to working human brains. The first step in a magnetic resonance experiment is to the spin polarisation. However, most NMR experiments are slow because of the small fraction of nuclei which are spin polarised. Electrons are much more easily polarized but the corresponding technique, electron paramagnetic resonance (EPR), is only useful for studying the materials with unpaired electrons. We are developing a technique to efficiently transfer electron spin polarization to nuclear spins by simultaneously driving EPR and NMR in a suitable polarizing agent, allowing a wide range of exciting NMR experiments be possible. This technique is called dynamic nuclear polarisation (DNP) and the polarizing agent is a nitrogen atom inside a buckyball: N@C60.

This project is supervised by Dr. John Dennis

Publications

1. Wu Y, Zhao X, Song Z, et al. Effect of process medium on the synthesis of carbon coated lithium vanadium phosphate composite using rheological phase reaction method[J]. Journal of Power Sources, 2015, 274: 782-790.

2. Zhang F, Zhao X, Yi C, et al. Dopant-free star-shaped hole-transport materials for efficient and stable perovskite solar cells[J]. Dyes and Pigments, 2017, 136: 273-277.

3. Zhao X, Wang S, You J, et al. Solution-processed thermally stable amorphous films of small molecular hole injection/transport bi-functional materials and their application in high efficiency OLEDs[J]. Journal of Materials Chemistry C, 2015, 3(43): 11377-11384.

4. Shi W, Hou X, Liu T, Zhao X, et al. Purification and electronic characterisation of 18 isomers of the OPV acceptor material bis-[60] PCBM[J]. Chemical Communications, 2017, 53(5): 975-978.

5. Qi P, Zhang F, Zhao X, et al. Efficient and stable dopant‐free hole‐transport material with a triphenylamine core for CH3NH3PbI3 perovskite solar cells[J]. Energy Technology, 2016.

6. Zhao X, Zhang F, Yi C, et al. A novel one-step synthesized and dopant-free hole transport material for efficient and stable perovskite solar cells[J]. Journal of Materials Chemistry A, 2016, 4(42): 16330-16334.