Im, Taehun Lee, Juyun Kim, Sung-Chul Randrianandraina, Joharimanitra Lee, Joo-Won Chung, Myoung Won Park, Taesung Low, Kam-Hung Lee, Seungkyu Oh, Soong Ju Kang, Yun Chan Weon, Seunghyun Lee, Jung-Hoon Kim, Seon Joon Jeong, Sohee 2024-08-08T01:00:12Z 2024-08-08T01:00:12Z 2024-08-08 2024-10 2051-6347 https://pubs.kist.re.kr/handle/201004/150372 With the increasing demand for ammonia applications, there is a significant focus on improving NH3 detection performance at room temperature. In this study, we introduce a groundbreaking NH3 gas sensor based on Cu(i)-based coordination polymers, featuring semiconducting, single stranded 1D-helical nanowires constructed from Cu-Cl and N-methylthiourea (MTCP). The MTCP demonstrates an exceptional response to NH3 gas (>900% at 100 ppm) and superior selectivity at room temperature compared to current materials. The interaction mechanism between NH3 and the MTCP sensor is elucidated through a combination of empirical results and computational calculations, leveraging a crystal-determined structure. This reveals the formation of NH3-Cu and NH3-H3C complexes, indicative of a thermodynamically favorable reaction. Additionally, Ag-doped MTCP exhibits higher selectivity and a response over two times greater than the original MTCP, establishing it as a prominent NH3 detection system at room temperature. English Royal Society of Chemistry Single stranded 1D-helical Cu coordination polymer for ultra-sensitive ammonia sensing at room temperature Article 10.1039/d4mh00651h 1 Materials Horizons, v.11, no.20, pp.4970 - 4978 Materials Horizons 11 20 4970 4978 Y scie scopus 001277656700001 2-s2.0-85199552017 Chemistry, Multidisciplinary Materials Science, Multidisciplinary Chemistry Materials Science Article THIN-FILM SULFIDE SENSORS FTIR NH3 METAL-ORGANIC FRAMEWORK ELECTRONIC-STRUCTURES