Ion‐in‐Conjugation: Squaraine as an Ultrasensitive Ammonia Sensor Material. Issue 2 (18th October 2016)

• Record Type: Journal Article
• Authors: Xiao, Xin; Cheng, Xue‐Feng; Hou, Xiang; He, Jing‐Hui; Xu, Qing‐Feng; Li, Hua; Li, Na‐Jun; Chen, Dong‐Yun; Lu, Jian‐Mei
• Is Part Of: Small. Volume 13:Issue 2(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-10-18
• Subjects: ammonia sensors -- organic thin‐film -- resonance‐stabilized -- squaraine -- zwitterionic; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201602190
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : An organic thin‐film gas sensor based on squaraine detects ammonia as low as 40 ppb with impressive reversibility and stability. The resonance‐stabilized zwitterionic characteristics offer squaraines high affinity and sensitivity toward electron‐rich analytes without irreversible chemical binding, while the embedded squaric ring makes SA‐CH3 highly sensitive. The symmetric molecular geometry and good crystallinity also contribute to the high performance.