1. Department of Chemistry and Bioscience Aalborg University Aalborg 9220 Denmark
2. Laboratory of Infrared Material and Devices The Research Institute of Advanced Technologies Ningbo University Ningbo 315211 China
3. School of Materials Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 China
4. Department of Materials and Production Aalborg University Aalborg 9220 Denmark
5. Department of Physics Chemistry and Pharmacy University of Southern Denmark Odense M 5230 Denmark
6. Department of Chemistry Aarhus University Aarhus C 8000 Denmark