"On-off-on" switchable sensor: a fluorescent spiropyran responds to extreme pH conditions and its bioimaging

Shulin Wan1, Yang Zheng, Jie Shen

  • 1State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology , Beijing 100029, China.