A portable electrochemical sensor for caffeine and (-)epigallocatechin gallate (EGCG) based on molecularly imprinted poly(ethylene-co-vinyl-alcohol) recognition element

I. Cheng Chung, Chih Chun Chang, Han Sheng Chiu, Shih Fan Jiang, Mei Hwa Lee, Bin Da Liu, Chun Yueh Huang, Hung Yin Lin