1. IntroductionIn recent years, the design and synthesis of sensors for thedetection of anions have been received extensive attention becausesensors have several advantages such as high selectivity, sensitivity,and real-time monitoring over other methods [1–4]. Among anions,cyanide, as one of the most useful anions, is extensively utilizedin many fields such as gold-extraction [5], herbicide [6], syntheticfibers and resins industry [7]. But cyanide is a very toxicity anionfor the human because it can affect many functions in the humanbody, including the vascular, visual, endocrine, metabolic systems,and so on [8]. It is generally known that 0.5–3.5 mg of cyanide perkg of body weight is fatal for humans [9]. Accordingly, the ratio-nal design and synthesis of efficient sensor to selectively recognizecyanide anion is an important field of supramolecular chemistry.Although previous work developed a wide variety of chemicaland physical [10–13] sensors for the detection of CN−, it is stilla challenge to design the anion sensors with high selectivity andsensitivity in the context of interference from coexisting anions.Moreover, most of these methods require expensive equipmentand laborious procedures that can be carried out only by trained