Title | Design of chemoresistive sensory materials: polythiophene-based pseudopolyrotaxanes. |
Publication Type | Journal Article |
Year of Publication | 1995 |
Authors | Marsella, MJ, Carroll, PJ, Swager, TM |
Journal | Journal of the American Chemical Society |
Volume | 117 |
Pagination | 9832–9841 |
ISSN | 0002-7863 |
Keywords | chemoresistive sensory material polythiophene based pseudopolyrotaxane, paraquat chemoresistive response polymer based device |
Abstract | The authors report conducting polymer-based sensors which transduce reversible, noncovalent, and non-redox-dependent mol. recognition events into measurable changes in cond. These chemoresistive polymers are derived from bithiophenes contg. cyclophane receptors capable of forming self-assembled pseudorotaxane complexes with paraquat. The electrostatic perturbations arising from pseudopolyrotaxane formation cause a decrease in carrier mobility and thus lower the cond. The chemoresistive response was consistent with decreased carrier mobility and exhibited an enhanced sensitivity to analyte-promoted electrostatic perturbations relative to the voltammetric response. Polymer-based devices which demonstrate a real time chemoresistive response to paraquat are also reported. [on SciFinder(R)] |
DOI | 10.1021/ja00144a008 |