1. Department of Materials Science and EngineeringCollege of EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking University Beijing 100871 China
2. Institute of Polymer Optoelectronic Materials and DevicesState Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Guangzhou 510640 China
3. MacDiarmid Institute for Advanced Materials and NanotechnologySchool of Chemical and Physical SciencesVictoria University of Wellington Wellington 6010 New Zealand
4. Institute of ChemistryChinese Academy of Sciences Beijing 100190 China
5. State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong University Xi'an 710049 China