Fluorescence array-based sensing of metal ions using conjugated polyelectrolytes.
Yi Wu, Ying Tan, Jiatao Wu, Shangying Chen, Yu Zong Chen, Xinwen Zhou, Yuyang Jiang, Chunyan Tan
ACS Appl Mater Interfaces | Published : 2015
Array-based sensing offers several advantages for detecting a series of analytes with common structures or properties. In this study, four anionic conjugated polyelectrolytes (CPEs) with a common poly(p-pheynylene ethynylene) (PPE) backbone and varying pendant ionic side chains were designed. The conjugation length, repeat unit pattern, and ionic side chain composition were the main factors affecting the fluorescence patterns of CPE polymers in response to the addition of different metal ions. Eight metal ions, including Pb(2+), Hg(2+), Fe(3+), Cr(3+), Cu(2+), Mn(2+), Ni(2+), and Co(2+), categorized as water contaminants by the Environmental Protection Agency, were selected as analytes in th..View full abstract