1. Department of Physical Sciences (Chemistry), University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, Humberside, United Kingdom
2. Department of Chemistry, University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom
3. Organic and Materials Chemistry, Department of Chemistry, Liquid Crystals and Organophotonics Research Group, University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom
4. Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom