1. Department of Chemistry National Tsing Hua University No. 101, Sec. 2, Kuang‐Fu Rd. Hsinchu 30013 Taiwan
2. Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
3. Institute of Optoelectronic Sciences National Taiwan Ocean University Keelung 20224 Taiwan
4. Department of Chemistry National Sun Yat‐sen University Kaohsiung 80424 Taiwan