Sensors and Actuators B: Chemical
Elif Baysak, Samet Yuvayapan, Abdullah Aydogan, Gurkan Hizal
Noncovalent side-wall functionalization of SWCNT with a pyrene bearing calixpyrrole is reported. The modified SWCNT has been characterized by scanning electron microscopy, electron dispersive spectroscopy, and thermogravimetric analysis. This calixpyrrole-decorated SWCNT based sensor was implemented on filter paper. The resistance change of SWCNT network upon VOC exposure was monitored in the chemiresistors approach. The calixpyrrole-decorated SWCNT sensor on filter paper was found to show fast and selective sensing of acetone when compared with pristine SWCNT-on-paper sensor due to the binding of acetone by calixpyrrole molecules. The sensor showed logarithmic response toward acetone in a concentration range between 20 to 500 ppm.