The development of low cost, efficient and reversible chemiresistive sensors is one of the future challenges for the detection of harmful and toxic gases. In this direction, the effect of anchoring of hexadecafluorinated copper phthalocyanine (F₁₆CuPc) molecules on to the reduced graphene oxide (rGO) sheets has been investigated for the first time, to develop a room-temperature chemiresistive sensor that can efficiently detect chlorine (Cl₂) even down to few parts per billion (ppb) level. The rGO/F₁₆CuPc hybrid materials characterized by X-ray photoelectron, Raman, Fourier transform infrared and ultraviolet-visible spectroscopy techniques indicated the presence of a strong synergetic interaction between the F₁₆CuPc molecule and rGO sheet. Besides, scanning electron microscopic studies revealed that F₁₆CuPc molecules assembled to form nano-flower type structures on rGO sheets. Under optimal conditions, the as-fabricated sensor exhibited improved response/recovery characteristics in comparison to its unsubstituted rGO/CuPc counterpart. The significant improvement in gas sensing characteristics has been independently verified by electrochemical impedance spectroscopy technique.

低成本，高效和可逆化学阻性传感器的开发是检测有害和有毒气体的未来挑战之一。在这个方向上，首次研究了六氟铜酞菁（F ₁₆ CuPc）分子在还原氧化石墨烯（rGO）板上的锚固效果，从而开发出一种能够有效检测氯的室温化学电阻传感器（ Cl ₂）甚至降至十亿分之几（ppb）的水平。以X射线光电子，拉曼光谱，傅立叶变换红外光谱和紫外可见光谱技术为特征的rGO / F ₁₆ CuPc杂化材料表明F ₁₆之间存在强大的协同作用CuPc分子和rGO片。此外，扫描电子显微镜研究表明，F ₁₆ CuPc分子在rGO片上组装形成纳米花型结构。在最佳条件下，与未取代的rGO / CuPc对应物相比，所制造的传感器表现出改善的响应/恢复特性。气体传感特性的显着改善已通过电化学阻抗谱技术独立验证。