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Lu RQ, Yuan W, Croy RG, Essigmann JM, Swager TM. Metallocalix[4]arene Polymers for Gravimetric Detection of N-Nitrosodialkylamines. J Am Chem Soc 2021; 143:19809-19815. [PMID: 34793165 DOI: 10.1021/jacs.1c08739] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
N-Nitrosamines are found in food, drugs, air, water, and soil. They pose a significant risk to human health because of their carcinogenicity; consequently, materials that can be used to selectively and sensitively detect nitrosamines are needed. In this work, we designed and synthesized two polymers bearing calix[4]arene or 4-tert-butylcalix[4]arene tungsten-imido complexes (PCalixH and PCalixtBu) as N-nitrosodimethylamine (NDMA) receptors. The interaction between metallocalix[4]arene monomers/polymers and NDMA was confirmed by 1H NMR and IR spectroscopy. Single-crystal X-ray analysis further revealed that the host-guest interaction is based on binding of the terminal oxygen of NDMA to tungsten within the calixarene cavity. Gravimetric detection of NDMA was performed on a quartz crystal microbalance (QCM) in air. Both polymers show responses to NDMA, with PCalixtBu exhibiting a low theoretical limit of detection of 5 ppb for NDMA. The sensor also shows high selectivity toward NDMA and moderate humidity tolerance. This work provides a sensitive sensor for detection of NDMA and also offers a class of new, selective, and efficient NDMA receptors for the future design of NDMA sensors and NDMA extraction materials.
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Affiliation(s)
- Ru-Qiang Lu
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Weize Yuan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Robert G Croy
- Department of Biological Engineering and Center for Environmental Health Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - John M Essigmann
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.,Department of Biological Engineering and Center for Environmental Health Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Timothy M Swager
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.,Department of Biological Engineering and Center for Environmental Health Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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Li B, Wang J, Qin A, Tang BZ. Imidazole-based Cu( i)-catalyzed click polymerization of diazides and diynes under mild conditions. Polym Chem 2021. [DOI: 10.1039/d0py01675f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient imidazole-based Cu(i)-catalyzed azide–alkyne click polymerization under mild reaction conditions was developed.
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Affiliation(s)
- Baixue Li
- State Key Laboratory of Luminescent Materials and Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- SCUT-HKUST Joint Research Institute
- AIE Institute
- Center for Aggregation-Induced Emission
| | - Jia Wang
- State Key Laboratory of Luminescent Materials and Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- SCUT-HKUST Joint Research Institute
- AIE Institute
- Center for Aggregation-Induced Emission
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- SCUT-HKUST Joint Research Institute
- AIE Institute
- Center for Aggregation-Induced Emission
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- SCUT-HKUST Joint Research Institute
- AIE Institute
- Center for Aggregation-Induced Emission
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