journal article·2024Open access

Single stranded 1D-helical Cu coordination polymer for ultra-sensitive ammonia sensing at room temperature

Taehun Im, Juyun Lee, Sung-Chul Kim, Joharimanitra Randrianandraina, Joo-Won Lee, Myoung Won Chung, Taesung Park, Kam-Hung Low, Seungkyu Lee, Soong Ju Oh, Yun Chan Kang, Seunghyun Weon, Jung-Hoon Lee, Seon Joon Kim, Sohee Jeong

Materials Horizons· Volume 11· Issue 20

Abstract

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.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Metal-Organic Frameworks: Synthesis and Applications · Molecular Sensors and Ion Detection

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea

Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea

Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea

Advanced Analysis and Data Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea

Computational Science Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea

School of Health and Environmental Science & Department of Health and Safety Convergence Science, Korea University, Seoul, 02841, Korea

Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China

Division of Nanoscience and Technology, KIST School, University of Science and Technology, Seoul, 02792, Republic of Korea

Funding

Korea Institute of Science and Technology · National Research Foundation of Korea · Ministry of Trade, Industry and Energy · National Research Council of Science and Technology

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