A biocompatible polyurethane fluorescent emulsion with aggregation-induced emission for targeting tumor imaging Yangcen Ou, Xiaofei Wang, Nan He, Xiao Wang, Dan Lu, Zhen Li, Feng Luo, Jiehua Li and Hong Tan Abstract The applications of fluorescence imaging in tumor detection and assistance in tumor resection have become progressively more widespread. Biocompatible fluorescent nanoparticles with high sensitivity and selectivity are challenge for biological fluorescence imaging.