title: Copolythiophene-derived colorimetric and fluorometric sensor for lysophosphatidic acid based on multipoint interactions.
abstract: 3-Phenylthiophene-based water-soluble copolythiophenes (CPT9) were designed for colorimetric and fluorometric detection of lysophosphatidic acid (LPA) based on electrostatic interaction, hydrophobic interaction, and hydrogen bonding. Other negatively charged species gave nearly no interference, and the detection limit reached to 0.6 μM, which is below the requisite detection limits for LPA in human plasma samples. The appealing performance of CPT9 was demonstrated to originate from the multipoint interaction-induced conformational change of conjugated backbone and weakened electron transfer effect. To our best knowledge, this is the first polythiophene based optical sensor which displays emission peak red-shift followed with fluorescence enhancement.
authors: Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China.
authors: Minhuan
authors: M
authors: Lan
authors: Weimin
authors: W
authors: Liu
authors: Ying
authors: Y
authors: Wang
authors: Jiechao
authors: J
authors: Ge
authors: Jiasheng
authors: J
authors: Wu
authors: Hongyan
authors: H
authors: Zhang
authors: Jianhong
authors: J
authors: Chen
authors: Wenjun
authors: W
authors: Zhang
authors: Pengfei
authors: P
authors: Wang
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D003124:Colorimetry / Q000379:methods*; D005470:Fluorometry / Q000379:methods*; D008246:Lysophospholipids / Q000032:analysis* / Q000737:chemistry; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry; D013876:Thiophenes / Q000737:chemistry
chemical_list: D008246:Lysophospholipids; D011108:Polymers; D013876:Thiophenes; C032881:lysophosphatidic acid