Metal complexation induced supramolecular gels for the detection of cyanide in water

Dipankar Ghosh; Deepa; Krishna K. Damodaran

doi:10.1080/10610278.2020.1751845

Metal complexation induced supramolecular gels for the detection of cyanide in water

Dipankar Ghosh, Deepa, Krishna K. Damodaran

University of Iceland

Research output: Contribution to journal › Article › peer-review

Abstract

The role of metal salts in inducing supramolecular gel network formation was analysed by reacting two pyridyl-N-oxide amides with various diamagnetic zinc(II) and cadmium(II) salts. Metal induced supramolecular gelation was observed for zinc(II) and cadmium(II) chloride complexes in water and the morphologies of the xerogels were analysed by scanning electron microscopy (SEM). The relative gel strength was corroborated with various non-bonding interactions observed in the solid-state structures of zinc(II) complexes using X-ray diffraction. The non-bonding interactions of the pyridyl-N-oxide amides and the metal complexes were compared to find the key interactions responsible for metallogel formation. The anion induced stimuli-responsive property of the metallogels was studied in the presence of halides and cyanide anions. The cadmium(II) gels were stable in presence of two equivalents of halides but the network collapsed in presence of cyanide anion in water and this property can be used to detect cyanide anions in water.

Original language	English
Pages (from-to)	276-286
Number of pages	11
Journal	Supramolecular Chemistry
Volume	32
Issue number	4
DOIs	https://doi.org/10.1080/10610278.2020.1751845
Publication status	Published - 2 Apr 2020

Bibliographical note

Funding Information: This work was supported by the Icelandic Centre for Research (Rannis) [Infrastructure Grant-150998-0031]. We thank the Science Institute and University of Iceland Research Fund for financial support. DKK and Deepa thank EU for the Erasmus Exchange Program, D.G. thanks the University of Iceland for the Doctoral Research fund. We thank Rannis Iceland for Infrastructure grant (150998-0031), Sigur?ur Sveinn J?nsson, ISOR-Iceland for X-ray powder diffraction analysis and Dr Sigrid?ur Jon?sdot?tir, University of Iceland for NMR spectroscopy. Funding Information: We thank the Science Institute and University of Iceland Research Fund for financial support. DKK and Deepa thank EU for the Erasmus Exchange Program, D.G. thanks the University of Iceland for the Doctoral Research fund. We thank Rannis Iceland for Infrastructure grant (150998-0031), Sigurður Sveinn Jónsson, ISOR-Iceland for X-ray powder diffraction analysis and Dr Sigrid́ur Jońsdot́tir, University of Iceland for NMR spectroscopy. Publisher Copyright: © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.

Other keywords

Supramolecular gels
anion sensing
hydrogen bonding
metallogels
pyridyl-N-oxide amide

Access to Document

10.1080/10610278.2020.1751845

Cite this

@article{131aae34185741618f04ed9ba63b5b24,

title = "Metal complexation induced supramolecular gels for the detection of cyanide in water",

abstract = "The role of metal salts in inducing supramolecular gel network formation was analysed by reacting two pyridyl-N-oxide amides with various diamagnetic zinc(II) and cadmium(II) salts. Metal induced supramolecular gelation was observed for zinc(II) and cadmium(II) chloride complexes in water and the morphologies of the xerogels were analysed by scanning electron microscopy (SEM). The relative gel strength was corroborated with various non-bonding interactions observed in the solid-state structures of zinc(II) complexes using X-ray diffraction. The non-bonding interactions of the pyridyl-N-oxide amides and the metal complexes were compared to find the key interactions responsible for metallogel formation. The anion induced stimuli-responsive property of the metallogels was studied in the presence of halides and cyanide anions. The cadmium(II) gels were stable in presence of two equivalents of halides but the network collapsed in presence of cyanide anion in water and this property can be used to detect cyanide anions in water.",

keywords = "Supramolecular gels, anion sensing, hydrogen bonding, metallogels, pyridyl-N-oxide amide",

author = "Dipankar Ghosh and Deepa and Damodaran, \{Krishna K.\}",

note = "Funding Information: This work was supported by the Icelandic Centre for Research (Rannis) [Infrastructure Grant-150998-0031]. We thank the Science Institute and University of Iceland Research Fund for financial support. DKK and Deepa thank EU for the Erasmus Exchange Program, D.G. thanks the University of Iceland for the Doctoral Research fund. We thank Rannis Iceland for Infrastructure grant (150998-0031), Sigur?ur Sveinn J?nsson, ISOR-Iceland for X-ray powder diffraction analysis and Dr Sigrid?ur Jon?sdot?tir, University of Iceland for NMR spectroscopy. Funding Information: We thank the Science Institute and University of Iceland Research Fund for financial support. DKK and Deepa thank EU for the Erasmus Exchange Program, D.G. thanks the University of Iceland for the Doctoral Research fund. We thank Rannis Iceland for Infrastructure grant (150998-0031), Sigur{\dh}ur Sveinn J{\'o}nsson, ISOR-Iceland for X-ray powder diffraction analysis and Dr Sigri{\'d}ur Jo{\'n}sdo{\'t}tir, University of Iceland for NMR spectroscopy. Publisher Copyright: {\textcopyright} 2020, {\textcopyright} 2020 Informa UK Limited, trading as Taylor \& Francis Group.",

year = "2020",

month = apr,

day = "2",

doi = "10.1080/10610278.2020.1751845",

language = "English",

volume = "32",

pages = "276--286",

journal = "Supramolecular Chemistry",

issn = "1061-0278",

publisher = "Taylor and Francis Ltd.",

number = "4",

}

TY - JOUR

T1 - Metal complexation induced supramolecular gels for the detection of cyanide in water

AU - Ghosh, Dipankar

AU - Deepa, null

AU - Damodaran, Krishna K.

N1 - Funding Information: This work was supported by the Icelandic Centre for Research (Rannis) [Infrastructure Grant-150998-0031]. We thank the Science Institute and University of Iceland Research Fund for financial support. DKK and Deepa thank EU for the Erasmus Exchange Program, D.G. thanks the University of Iceland for the Doctoral Research fund. We thank Rannis Iceland for Infrastructure grant (150998-0031), Sigur?ur Sveinn J?nsson, ISOR-Iceland for X-ray powder diffraction analysis and Dr Sigrid?ur Jon?sdot?tir, University of Iceland for NMR spectroscopy. Funding Information: We thank the Science Institute and University of Iceland Research Fund for financial support. DKK and Deepa thank EU for the Erasmus Exchange Program, D.G. thanks the University of Iceland for the Doctoral Research fund. We thank Rannis Iceland for Infrastructure grant (150998-0031), Sigurður Sveinn Jónsson, ISOR-Iceland for X-ray powder diffraction analysis and Dr Sigrid́ur Jońsdot́tir, University of Iceland for NMR spectroscopy. Publisher Copyright: © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.

PY - 2020/4/2

Y1 - 2020/4/2

N2 - The role of metal salts in inducing supramolecular gel network formation was analysed by reacting two pyridyl-N-oxide amides with various diamagnetic zinc(II) and cadmium(II) salts. Metal induced supramolecular gelation was observed for zinc(II) and cadmium(II) chloride complexes in water and the morphologies of the xerogels were analysed by scanning electron microscopy (SEM). The relative gel strength was corroborated with various non-bonding interactions observed in the solid-state structures of zinc(II) complexes using X-ray diffraction. The non-bonding interactions of the pyridyl-N-oxide amides and the metal complexes were compared to find the key interactions responsible for metallogel formation. The anion induced stimuli-responsive property of the metallogels was studied in the presence of halides and cyanide anions. The cadmium(II) gels were stable in presence of two equivalents of halides but the network collapsed in presence of cyanide anion in water and this property can be used to detect cyanide anions in water.

AB - The role of metal salts in inducing supramolecular gel network formation was analysed by reacting two pyridyl-N-oxide amides with various diamagnetic zinc(II) and cadmium(II) salts. Metal induced supramolecular gelation was observed for zinc(II) and cadmium(II) chloride complexes in water and the morphologies of the xerogels were analysed by scanning electron microscopy (SEM). The relative gel strength was corroborated with various non-bonding interactions observed in the solid-state structures of zinc(II) complexes using X-ray diffraction. The non-bonding interactions of the pyridyl-N-oxide amides and the metal complexes were compared to find the key interactions responsible for metallogel formation. The anion induced stimuli-responsive property of the metallogels was studied in the presence of halides and cyanide anions. The cadmium(II) gels were stable in presence of two equivalents of halides but the network collapsed in presence of cyanide anion in water and this property can be used to detect cyanide anions in water.

KW - Supramolecular gels

KW - anion sensing

KW - hydrogen bonding

KW - metallogels

KW - pyridyl-N-oxide amide

UR - https://www.scopus.com/pages/publications/85084307013

U2 - 10.1080/10610278.2020.1751845

DO - 10.1080/10610278.2020.1751845

M3 - Article

SN - 1061-0278

VL - 32

SP - 276

EP - 286

JO - Supramolecular Chemistry

JF - Supramolecular Chemistry

IS - 4

ER -

Metal complexation induced supramolecular gels for the detection of cyanide in water

Abstract

Bibliographical note

Other keywords

Access to Document

Fingerprint

Cite this