Chiappara Clara, Campisciano Vincenzo, Arrabito Giuseppe, Errico Vito, Saggio Giovanni, Buscarino Gianpiero, Scopelliti Michelangelo, Gruttadauria Michelangelo, Giacalone Francesco, Pignataro Bruno
Department of Physics and Chemistry Emilio Segrè, and INSTM-UdR, University of Palermo, Building 17, Viale delle Scienze, Palermo, 90128, Italy.
Department of Biological Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Building 17, Viale delle Scienze, Palermo, 90128, Italy.
Chempluschem. 2020 Nov;85(11):2455-2464. doi: 10.1002/cplu.202000526. Epub 2020 Oct 6.
A novel bithiophene-fulleropyrrolidine bisadducts system (bis-Th2PC ) 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/R 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.
合成了一种新型的联噻吩-富勒吡咯烷双加合物体系（双-Th2PC），并通过计时电流法在柔性ITO/PET基底上进行电聚合。通过XPS、FT-IR、循环伏安法和光学技术对所得的半透明薄膜进行了表征，证实了电聚合过程的良好结果。原子力显微镜研究揭示了一种固有的无序颗粒形态，其中颗粒间的间距取决于弯曲的施加。薄膜的电阻被表征为弯曲（0°-90°范围内）的函数，显示出对低弯曲角度（10°-30°）有良好的响应性。对于弯曲角度分别为10°、20°和30°，ΔR/R变化分别为8%、16%和20%。这项研究是理解基于电聚合富勒烯薄膜压阻特性的第一步，为其作为弯曲传感器的应用开辟了道路。
