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Gayen KS, Das T, Chatterjee N. Recent Advances in Tris‐Primary Amine Based Organic Imine Cages and Related Amine Macrocycles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Titiksha Das
- Kanchrapara College University of Kalyani Kalyani West Bengal India
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Lakshminarayanan S, Jeyasingh V, Murugesan K, Samy MKK, Selvapalam N, Das G. C 3V symmetric tripodal molecular pocket for linear anions: Selective colorimetric detection of azide through N 4-Cu-π···hole interactions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118615. [PMID: 32593844 DOI: 10.1016/j.saa.2020.118615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/03/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Tris(3-amino propyl)amine (TRPN) based C3v symmetric tripodal molecular pocket, L has been prepared and mono copper complex of L, (1) having Cu-N4-π··· hole as recognizing elements, becoming a potential and selective colorimetric chemo sensor for perfect linear recognition of N3-, generate a Cu-NNN- π··· hole unit inside the tripodal pocket. Systematic spectrometric and naked-eye colorimetric studies reveal that, this chemo sensor is also colorimetrically recognizing the cyanide ion by its cavity via Cu-N4-π···hole interactions; nevertheless, when azide anion is entering as a guest into the molecular pocket of 1 which is already hosted cyanide anion, then host displaces cyanide ion, subsequently azide is getting inside the cavity. The strength of the copper complex, 1 towards azide and cyanide are found to be 2.36 × 103M-1, and 1.87 × 103 M-1 respectively in 7:3 acetonitrile:water solvent medium. Further, the ability of cyanide displacement by azide in complex 1 is found to be 2.53 × 103 M-1. To the best of our knowledge, this is the first example of naked-eye detection of azide via cyanide displacement assay by a tripodal receptor.
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Affiliation(s)
- Sudha Lakshminarayanan
- Department of Chemistry, International Research Centre, Centre for Supramolecular Chemistry, Kalasalingam Academy of Research and Education (KARE), Anand Nagar, Krishnankoil, Srivilliputtur, Tamil Nadu 626126, India
| | - Vanthana Jeyasingh
- Department of Chemistry, International Research Centre, Centre for Supramolecular Chemistry, Kalasalingam Academy of Research and Education (KARE), Anand Nagar, Krishnankoil, Srivilliputtur, Tamil Nadu 626126, India
| | - Kumaresan Murugesan
- Department of Chemistry, International Research Centre, Centre for Supramolecular Chemistry, Kalasalingam Academy of Research and Education (KARE), Anand Nagar, Krishnankoil, Srivilliputtur, Tamil Nadu 626126, India
| | | | - Narayanan Selvapalam
- Department of Chemistry, International Research Centre, Centre for Supramolecular Chemistry, Kalasalingam Academy of Research and Education (KARE), Anand Nagar, Krishnankoil, Srivilliputtur, Tamil Nadu 626126, India
| | - Geetha Das
- Department of Chemistry, International Research Centre, Centre for Supramolecular Chemistry, Kalasalingam Academy of Research and Education (KARE), Anand Nagar, Krishnankoil, Srivilliputtur, Tamil Nadu 626126, India.
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