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- Title
Bending Sensors Based on Thin Films of Semitransparent Bithiophene‐Fulleropyrrolidine Bisadducts.
- Authors
Chiappara, Clara; Campisciano, Vincenzo; Arrabito, Giuseppe; Errico, Vito; Saggio, Giovanni; Buscarino, Gianpiero; Scopelliti, Michelangelo; Gruttadauria, Michelangelo; Giacalone, Francesco; Pignataro, Bruno
- Abstract
A novel bithiophene‐fulleropyrrolidine bisadducts system (bis‐Th2PC60) was synthesized and electropolymerized by chronoamperometry onto flexible ITO/PET substrates. The resulting semitransparent thin film was characterized by XPS, FT‐IR, cyclic voltammetry and optical techniques, confirming the good outcome of the electropolymerization process. AFM investigations permitted to highlight an inherent disordered granular morphology, in which the grain‐to‐grain separation depends upon the application of bending. The electrical resistance of the thin film was characterized as a function of bending (in the range 0°–90°), showing promising responsivity to low bending angles (10°–30°). The ΔR/R0 variations turn out to be 8 %,16 % and 20 % for bending angles equal to 10°, 20° and 30°, respectively. This study represents a first step towards the understanding of piezoresistive properties in electropolymerized fullerenes‐based thin films, opening up applications as bending sensor.
- Subjects
THIN films; VOLTAMMETRY technique; BENT functions; DETECTORS; CYCLIC voltammetry; FULLERENES
- Publication
ChemPlusChem, 2020, Vol 85, Issue 11, p2455
- ISSN
2192-6506
- Publication type
Article
- DOI
10.1002/cplu.202000526