Hydroxyl-riched covalent organic framework for solid-phase microextraction of flavonoids aglycones or their metabolites in mice's plasma: Luteolin and quercetagetin as examples

Tian Quan, Yongqing Tao, Junji Wang, Shaochi Liu, Lijuan Yang, Luchun Wang, Qiuyi Liu, Yulian Yang, Yuemeng Zou, Meng Tian, Dandan Wang, Die Gao