1. Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
2. Leverhulme Research Centre for Functional Materials Design and Materials Innovation Factory University of Liverpool Oxford Street Liverpool L7 3NY UK
3. State Key Laboratory of Polymer Materials Engineering Polymer Research Institute Sichuan University Chengdu 610065 China
4. College of Chemistry and Chemical Engineering Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials Northwest Normal University Lanzhou 730070 China