1. Center for Condensed
Matter Sciences, National Taiwan University, Taipei 10617, Taiwan, R.O.C.
2. Institute
of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan, R.O.C.
3. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan, R.O.C.
4. Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan, R.O.C.