Jing Zhang, Shuai Yan, Zhiyong He, Cong Ding, Tianxing Zhai, Yage Chen, Haozheng Li, Guang Yang, Xiang Zhou, and Ping Wang*. Small unnatural amino acid carried raman tag for molecular imaging of genetically targeted proteins. J. Phys. Chem. Lett., 2018, 9, 4679-4685.