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Singh V, Dwivedi AD, Pandey R. Anticounterfeiting Feature of a Writable and Self-Erasable Ni(II)-Metallogel Pad via Fluorescent "Turn-On" Detection of Cyanide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5121-5136. [PMID: 38419340 DOI: 10.1021/acs.langmuir.3c03036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
A Schiff base 5-(2-hydroxy-3-methoxybenzylidieneamino)-1-H-imidazole-4-carboxamide (HL) comprising multibinding sites has been synthesized with the aim of fabricating a supramolecular gel. The gelator HL was characterized by FT-IR, 1H & 13C NMR, and ESI-MS techniques and also formed a [Ni(L)2] complex. The gelation property of HL was investigated with various metal ions, wherein Ni(II) selectively forms a mechanically and thermally stable supramolecular metallogel (MG) in the presence of a triethylamine base in DMF-MeOH media. Characterization of MG was accomplished with different spectro-analytical techniques such as FT-IR, ESI-MS, powder-XRD, SEM, rheological investigations, UV/vis, and fluorescence. The gelator HL displays moderate emission upon addition of Ni2+ and gives "turn-off" fluorescence output by forming the complex [Ni(L)2] (MG) due to the chelation-enhanced quenching of fluorescence (CHEQ). Job plot and ESI-MS data suggested a 2:1 stoichiometry between HL and Ni(II) in MG. Further, MG exhibited highly selective and ultrasensitive "turn-on" fluorescence signaling with CN- in the background presence of several cations and anions. The limit of detection (LoD) of MG was determined to be 6.9 × 10-9 M for CN- using the fluorescence technique. Notably, MG behaves as a fluorescent writable pad material explicitly with CN- under 365 nm UV light but not under ordinary light and the fluorescent text is self-erased after 15 min. Hence, MG can be used as a metallogel pad in the presence of CN- to communicate secret messages. Overall, the present work explores the fabrication of a thermo- and mechanostable Ni(II)-metallogel (MG), which selectively and ultrasensitively detects CN- both in the solution phase and in the gel form, wherein MG behaves as a writable and self-erasable pad with anticounterfeiting features for practical applications.
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Affiliation(s)
- Vaishali Singh
- Department of Chemistry, National Institute of Technology Uttarakhand, Srinagar (Garhwal) 246174, India
| | - Ambikesh D Dwivedi
- Department of Chemistry, Banaras Hindu University Varanasi, Varanasi 221005, India
| | - Rampal Pandey
- Department of Chemistry, National Institute of Technology Uttarakhand, Srinagar (Garhwal) 246174, India
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Yadav I, Osterloh WR, Kadish KM, Sankar M. Synthesis, Spectral, Redox, and Sensing Studies of β-Dicyanovinyl-Appended Corroles and Their Metal Complexes. Inorg Chem 2023; 62:7738-7752. [PMID: 37146287 DOI: 10.1021/acs.inorgchem.3c00341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A new family of β-dicyanovinyl (DCV)-appended corroles represented as MTPC(MN) (where M = 3H, Cu, Ag, and Co(PPh3) and MN = malononitrile and TPC = 5,10,15-triphenylcorrole) were synthesized starting from the free base mono β-formyl corrole, H3TPC(CHO), and characterized along with their respective MTPC(CHO) and MTPC complexes as to their spectroscopic and electrochemical properties in nonaqueous media. Comparisons between the two series of corroles demonstrate a pronounced substituent effect of the β-DCV group on the physicochemical properties making the MTPC(MN) derivatives substantially easier to reduce and more difficult to oxidize than the formyl or unsubstituted corroles. In addition, the colorimetric and spectral detection of 11 different anions (X) in the form of tetrabutylammonium salts (TBAX, X = PF6-, OAc-, H2PO4-, CN-, HSO4-, NO3-, ClO4-, F-, Cl-, Br-, and I-) were also investigated in nonaqueous media. Of the investigated anions, only CN- was found to induce changes in the UV-vis and 1H NMR spectra of the β-DCV metallocorroles. This data revealed that CuTPC(MN) and AgTPC(MN) act as chemodosimeters for selective cyanide ion detection via a nucleophilic attack at the vinylic carbon of the DCV substituent, while (PPh3)CoTPC(MN) acts as a chemosensor for cyanide ion sensing via axial coordination to the cobalt metal center. A low-limit detection of cyanide ions was observed at 1.69 ppm for CuTPC(MN) and 1.17 ppm for AgTPC(MN) in toluene.
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Affiliation(s)
- Inderpal Yadav
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - W Ryan Osterloh
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Karl M Kadish
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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Ishizuka T, Grover N, Kingsbury CJ, Kotani H, Senge MO, Kojima T. Nonplanar porphyrins: synthesis, properties, and unique functionalities. Chem Soc Rev 2022; 51:7560-7630. [PMID: 35959748 DOI: 10.1039/d2cs00391k] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porphyrins are variously substituted tetrapyrrolic macrocycles, with wide-ranging biological and chemical applications derived from metal chelation in the core and the 18π aromatic surface. Under suitable conditions, the porphyrin framework can deform significantly from regular planar shape, owing to steric overload on the porphyrin periphery or steric repulsion in the core, among other structure modulation strategies. Adopting this nonplanar porphyrin architecture allows guest molecules to interact directly with an exposed core, with guest-responsive and photoactive electronic states of the porphyrin allowing energy, information, atom and electron transfer within and between these species. This functionality can be incorporated and tuned by decoration of functional groups and electronic modifications, with individual deformation profiles adapted to specific key sensing and catalysis applications. Nonplanar porphyrins are assisting breakthroughs in molecular recognition, organo- and photoredox catalysis; simultaneously bio-inspired and distinctly synthetic, these molecules offer a new dimension in shape-responsive host-guest chemistry. In this review, we have summarized the synthetic methods and design aspects of nonplanar porphyrin formation, key properties, structure and functionality of the nonplanar aromatic framework, and the scope and utility of this emerging class towards outstanding scientific, industrial and environmental issues.
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Affiliation(s)
- Tomoya Ishizuka
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba and CREST (JST), 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan.
| | - Nitika Grover
- School of Chemistry, Chair of Organic Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Christopher J Kingsbury
- School of Chemistry, Chair of Organic Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Hiroaki Kotani
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba and CREST (JST), 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan.
| | - Mathias O Senge
- Institute for Advanced Study (TUM-IAS), Technical University of Munich, Focus Group - Molecular and Interfacial Engineering of Organic Nanosystems, Lichtenbergstrasse 2a, 85748 Garching, Germany.
| | - Takahiko Kojima
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba and CREST (JST), 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan.
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Sugimura H, Nakajima K, Yamashita KI, Ogawa T. 20π Antiaromatic Isophlorins without Metallation or Core Modification. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haruna Sugimura
- Osaka University School of Science Graduate School of Science: Osaka Daigaku Daigakuin Rigaku Kenkyuka Rigakubu Department of Chemistry JAPAN
| | - Kana Nakajima
- Osaka University School of Science Graduate School of Science: Osaka Daigaku Daigakuin Rigaku Kenkyuka Rigakubu Department of Chemistry JAPAN
| | - Ken-ichi Yamashita
- Graduate School of Science, Osaka University Department of Chemistry 1-1 Machikaneyama, Toyonaka 560-0043 Osaka JAPAN
| | - Takuji Ogawa
- Osaka University School of Science Graduate School of Science: Osaka Daigaku Daigakuin Rigaku Kenkyuka Rigakubu Department of Chemistry JAPAN
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Gul Z, Khan S, Ullah S, Ullah H, Khan MU, Ullah M, Altaf AA. Recent Development in Coordination Compounds as a Sensor for Cyanide Ions in Biological and Environmental Segments. Crit Rev Anal Chem 2022; 54:508-528. [PMID: 35671238 DOI: 10.1080/10408347.2022.2085027] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rapid detection of toxic ions has taken great attention in the last few decades due to its importance in maintaining a greener environment for human beings. The extreme toxicity of cyanide (CN-) ions is a great environmental concern as its continued industrial use generates interest in facile and sensitive methods for CN- ions detection. Since CN- ions act as a ligand in coordination chemistry which rapidly coordinates with suitable metals and forms complexes, this ability was mainly explored in its detection. It also attacks the central metal in coordination compounds and gives a fluorimetric response. Coordination compounds behave as a sensor for the detection of important ions like CN- ions and have gained great attention due to their facile synthesis, multianalyte detection, clear detection and low detection limit. Recently, considerable efforts have been devoted to the detection and quantification of hazardous multianalyte using a single probe. Cu2+ complexes are the main complexes used for CN- ions detection; however, the complexes of many other metals are also used as sensors. Four basic types of interaction have been discussed in coordination compound sensors for CN- detection. The performances of different sensors are compared with one another and the sensors which have the lowest detection limit are highlighted. This review comprises the progress made by coordination compounds as sensors for the detection of CN- ions in the last six years (2015-2021). To the best of our knowledge, there is no review on coordination compounds as a sensor for CN- ions during this period. [Figure: see text].
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Affiliation(s)
- Zarif Gul
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Sikandar Khan
- Department of Chemistry, University of Malakand, Chakdara, Pakistan
| | - Shaheed Ullah
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Hayat Ullah
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Misbah Ullah Khan
- Center for Nano-Science, University of Okara, Okara, Punjab, Pakistan
| | - Munzer Ullah
- Department of Biochemistry, University of Okara, Okara, Punjab, Pakistan
| | - Ataf Ali Altaf
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
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Das C, Mondal A, Sengupta S, Cardin C, Chattopadhyay SK. Selective cyanide sensing using a Fe(III) complex of pyridoxal-beta alanine Schiff base. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 273:120943. [PMID: 35183855 DOI: 10.1016/j.saa.2022.120943] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 12/30/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Fluorogenic chemosensors using pyridoxal derivatized ligands as fluorophore is a rapidly growing field of research. Here we report a new Fe(III) complex, [Fe(HBala-pydx)(Bala-pydx)] (H2Bala-pydx is the Schiff base of pyridoxal with beta-alanine), which can serve as a sensitive and selective turn-on fluorescent sensor for the detection of cyanide(CN-) in micromolar concentrations (L.O.D. is 1.134 µM), via the ligand displacement approach, in aqueous-acetonitrile medium. The Fe(III) complex is adequately characterized by analytical and spectroscopic methods along with X-ray crystal structure determination.
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Affiliation(s)
- Chandrima Das
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India
| | - Antu Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India
| | - Swaraj Sengupta
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India; Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India
| | - Christine Cardin
- Department of Chemistry, The University of Reading, Whiteknights, Reading, Berkshire RG6 6AH, United Kingdom
| | - Shyamal Kumar Chattopadhyay
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
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Kumar S, Chaudhri N, Osterloh WR, Kadish KM, Sankar M. Nickel(II) monobenzoporphyrins and chlorins: synthesis, electrochemistry and anion sensing properties. Dalton Trans 2021; 50:17086-17100. [PMID: 34779452 DOI: 10.1039/d1dt03122h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of nickel(II) monobenzochlorins (MBCs) and monobenzoporphyrins (MBPs) containing β-appended or meso,β-fused indanedione (IND) or malononitrile (MN) groups were synthesized and characterized for their physicochemical, electrochemical and anion sensing properties. Each investigated compound contained four meso-phenyl rings and a single β,β'-fused 4,5-di(methoxycarbonyl)benzene ring, with the chlorins represented as NiMBC(Y)2(R)4 and the porphyrins as NiMBP(YF)2, where Y is an indanedione (IND) or malononitrile (MN) group, R = H or Br and YF is a meso,β-fused IND or MN substituent. One of the investigated compounds, NiMBP(IND)2, was structurally characterized and shown to possess a ruffled macrocyclic conformation. The monobenzochlorins, NiMBC(IND)2, NiMBC(IND)2Br4 and NiMBC(MN)2, reversibly respond to basic anions such as CN-, F-, OAc- and H2PO4- through a visible color change assigned to the deprotonation of the vicinal proton on the appended IND or MN substituents. The malononitrile-fused NiII monobenzoporphyrin, NiMBP(MN)2, exhibited a selective but irreversible visual detection of cyanide ions (LOD = 2.23 ppm). This reaction afforded a tri-fused π-extended monobenzoporphyrin product represented as NiMBP(VCN)2 (where VCN = meso,β-fused vinyl cyanide) in non-aqueous media and proceeded via anion induced electron transfer (AIET). The in situ generated π-extended porphyrin was also isolated and characterized as to its physicochemical and electrochemical properties and found to possess a narrow electrochemical HOMO-LUMO gap of 1.46 V along with a near-IR (NIR) absorption band located at 861 nm.
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Affiliation(s)
- Sandeep Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India.
| | - Nivedita Chaudhri
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India.
| | - W Ryan Osterloh
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA.
| | - Karl M Kadish
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA.
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India.
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Shokurov AV, Kutsybala DS, Kroitor AP, Dmitrienko AA, Martynov AG, Enakieva YY, Tsivadze AY, Selektor SL, Gorbunova YG. Spin Crossover in Nickel(II) Tetraphenylporphyrinate via Forced Axial Coordination at the Air/Water Interface. Molecules 2021; 26:molecules26144155. [PMID: 34299430 PMCID: PMC8305922 DOI: 10.3390/molecules26144155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/03/2021] [Accepted: 07/05/2021] [Indexed: 11/24/2022] Open
Abstract
Coordination-induced spin crossover (CISCO) in nickel(II) porphyrinates is an intriguing phenomenon that is interesting from both fundamental and practical standpoints. However, in most cases, realization of this effect requires extensive synthetic protocols or extreme concentrations of extra-ligands. Herein we show that CISCO effect can be prompted for the commonly available nickel(II) tetraphenylporphyrinate, NiTPP, upon deposition of this complex at the air/water interface together with a ruthenium(II) phthalocyaninate, CRPcRu(pyz)2, bearing two axial pyrazine ligands. The latter was used as a molecular guiderail to align Ni···Ru···Ni metal centers for pyrazine coordination upon lateral compression of the system, which helps bring the two macrocycles closer together and forces the formation of Ni–pyz bonds. The fact of Ni(II) porphyrinate switching from low- to high-spin state upon acquiring additional ligands can be conveniently observed in situ via reflection-absorption UV-vis spectroscopy. The reversible nature of this interaction allows for dissociation of Ni–pyz bonds, and thus, change of nickel cation spin state, upon expansion of the monolayer.
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Affiliation(s)
- Alexander V. Shokurov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
- Correspondence: (A.V.S.); (Y.G.G.)
| | - Daria S. Kutsybala
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
| | - Andrey P. Kroitor
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
| | - Alexander A. Dmitrienko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia;
| | - Alexander G. Martynov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
| | - Yulia Yu. Enakieva
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
| | - Aslan Yu. Tsivadze
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, 119991 Moscow, Russia
| | - Sofiya L. Selektor
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
| | - Yulia G. Gorbunova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, 119071 Moscow, Russia; (D.S.K.); (A.P.K.); (A.G.M.); (Y.Y.E.); (A.Y.T.); (S.L.S.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, 119991 Moscow, Russia
- Correspondence: (A.V.S.); (Y.G.G.)
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Norvaiša K, Yeow K, Twamley B, Roucan M, Senge MO. Strategic Synthesis of 'Picket Fence' Porphyrins Based on Nonplanar Macrocycles. European J Org Chem 2021; 2021:1871-1882. [PMID: 33889056 PMCID: PMC8048935 DOI: 10.1002/ejoc.202100154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/04/2021] [Indexed: 12/31/2022]
Abstract
Traditional 'picket fence' porphyrin systems have been a topic of interest for their capacity to direct steric shielding effects selectively to one side of the macrocycle. Sterically overcrowded porphyrin systems that adopt macrocycle deformations have recently drawn attention for their applications in organocatalysis and sensing. Here we explore the combined benefits of nonplanar porphyrins and the old molecular design to bring new concepts to the playing field. The challenging ortho-positions of meso-phenyl residues in dodecasubstituted porphyrin systems led us to transition to less hindered para- and meta-sites and develop selective demethylation based on the steric interplay. Isolation of the symmetrical target compound [2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetrakis(3,5-dipivaloyloxyphenyl)porphyrin] was investigated under two synthetic pathways. The obtained insight was used to isolate unsymmetrical [2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetrakis(2-nitro-5-pivaloyloxyphenyl)porphyrin]. Upon separation of the atropisomers, a detailed single-crystal X-ray crystallographic analysis highlighted intrinsic intermolecular interactions. The nonplanarity of these systems in combination with 'picket fence' motifs provides an important feature in the design of supramolecular ensembles.
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Affiliation(s)
- Karolis Norvaiša
- Chair of Organic ChemistrySchool of ChemistryTrinity Biomedical Sciences InstituteTrinity College DublinThe University of Dublin152–160 Pearse StreetDublin2Ireland
| | - Kathryn Yeow
- Chair of Organic ChemistrySchool of ChemistryTrinity Biomedical Sciences InstituteTrinity College DublinThe University of Dublin152–160 Pearse StreetDublin2Ireland
| | - Brendan Twamley
- School of ChemistryTrinity College DublinThe University of DublinDublin2Ireland
| | - Marie Roucan
- Chair of Organic ChemistrySchool of ChemistryTrinity Biomedical Sciences InstituteTrinity College DublinThe University of Dublin152–160 Pearse StreetDublin2Ireland
| | - Mathias O. Senge
- Chair of Organic ChemistrySchool of ChemistryTrinity Biomedical Sciences InstituteTrinity College DublinThe University of Dublin152–160 Pearse StreetDublin2Ireland
- Institute for Advanced Study (TUM-IAS)Technical University of MunichLichtenbergstrasse 2a85748GarchingGermany
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Norvaiša K, O'Brien JE, Gibbons DJ, Senge MO. Elucidating Atropisomerism in Nonplanar Porphyrins with Tunable Supramolecular Complexes. Chemistry 2020; 27:331-339. [PMID: 33405259 PMCID: PMC7839692 DOI: 10.1002/chem.202003414] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Indexed: 12/19/2022]
Abstract
Atropisomerism is a fundamental feature of substituted biaryls resulting from rotation around the biaryl axis. Different stereoisomers are formed due to restricted rotation about the single bond, a situation often found in substituted porphyrins. Previously NMR determination of porphyrin atropisomers proved difficult, if not almost impossible to accomplish, due to low resolution or unresolvable resonance signals that predominantly overlapped. Here, we shed some light on this fundamental issue found in porphyrinoid stereochemistry. Using benzenesulfonic acid (BSA) for host‐guest interactions and performing 1D, 2D NMR spectroscopic analyses, we were able to characterize all four rotamers of the nonplanar 5,10,15,20‐tetrakis(2‐aminophenyl)‐2,3,7,8,12,13,17,18‐octaethylporphyirin as restricted H‐bonding complexes. Additionally, X‐ray structural analysis was used to investigate aspects of the weak host–guest interactions. A detailed assignment of the chemical signals suggests charge‐assisted complexation as a key to unravel the atropisomeric enigma. From a method development perspective, symmetry operations unique to porphyrin atropisomers offer an essential handle to accurately identify the rotamers using NMR techniques only.
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Affiliation(s)
- Karolis Norvaiša
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - John E O'Brien
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Dáire J Gibbons
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Mathias O Senge
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland.,Institute for Advanced Study (TUM-IAS), Technical University of Munich, Lichtenbergstrasse 2 a, 85748, Garching, Germany
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11
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Norvaiša K, Kielmann M, Senge MO. Porphyrins as Colorimetric and Photometric Biosensors in Modern Bioanalytical Systems. Chembiochem 2020; 21:1793-1807. [PMID: 32187831 PMCID: PMC7383976 DOI: 10.1002/cbic.202000067] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/04/2020] [Indexed: 12/18/2022]
Abstract
Advances in porphyrin chemistry have provided novel materials and exciting technologies for bioanalysis such as colorimetric sensor array (CSA), photo-electrochemical (PEC) biosensing, and nanocomposites as peroxidase mimetics for glucose detection. This review highlights selected recent advances in the construction of supramolecular assemblies based on the porphyrin macrocycle that provide recognition of various biologically important entities through the unique porphyrin properties associated with colorimetry, spectrophotometry, and photo-electrochemistry.
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Affiliation(s)
- Karolis Norvaiša
- School of Chemistry, SFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences Institute152–160 Pearse Street, Trinity College Dublin The University of DublinDublin2Ireland
| | - Marc Kielmann
- School of Chemistry, SFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences Institute152–160 Pearse Street, Trinity College Dublin The University of DublinDublin2Ireland
| | - Mathias O. Senge
- School of Chemistry, SFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences Institute152–160 Pearse Street, Trinity College Dublin The University of DublinDublin2Ireland
- Institute for Advanced Study (TUM-IAS)Lichtenberg-Strasse 2a85748GarchingGermany
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Li Y, Yao C, Zhong D, Li H, Liu B, Feng Z, Sun Y, Zhou G, Yang Z. Phosphorescent cyanide sensor based on a 2-phenylpyridine(ppy)-type cyclometalated Ir(III) complex bearing dimesitylboron group with concentration distinguishing ability. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Maurya N, Kumar Singh A. A chromogenic and fluorogenic chemodosimeter for selective detection of CN−. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Sahoo PR, Kumar A, Choudhary S, Hitaish, Chhikara R, Malik K, Nirwan S, Seth C, Duggal G, Kumar S. Tweezer-shaped hydrazone derivatives for the selective detection of cyanide ion. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-019-00963-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Arora A, Kaushal J, Kumar A, Kumar P, Kumar S. Ruthenium(II)‐Polypyridyl‐Based Sensor Bearing a DPA Unit for Selective Detection of Cu(II) Ion in Aqueous Medium. ChemistrySelect 2019. [DOI: 10.1002/slct.201900682] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Aayushi Arora
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
| | - Jolly Kaushal
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
| | - Arun Kumar
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
| | - Pramod Kumar
- Department of ChemistryMahamana Malviya College Khekra (Baghpat)C.C.S. University Meerut India
| | - Sushil Kumar
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
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16
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Lee H, Hong KI, Jang WD. Design and applications of molecular probes containing porphyrin derivatives. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.06.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Chaudhri N, Butcher RJ, Sankar M. Synthesis and structural, photophysical, electrochemical redox and axial ligation properties of highly electron deficient perchlorometalloporphyrins and selective CN− sensing by Co(ii) complexes. NEW J CHEM 2018. [DOI: 10.1039/c7nj04418f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and characterization of MTPP(NO2)Cl7 have been reported. ZnII porphyrins exhibited higher Lewis acidity as compared to perbromoporphyrins. CoII porphyrins were utilized for the selective rapid visual detection of cyanide ions.
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Affiliation(s)
- Nivedita Chaudhri
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | | | - Muniappan Sankar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
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18
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Conradie J, Ghosh A. Energetics of Saddling versus Ruffling in Metalloporphyrins: Unusual Ruffled Dodecasubstituted Porphyrins. ACS OMEGA 2017; 2:6708-6714. [PMID: 31457262 PMCID: PMC6644939 DOI: 10.1021/acsomega.7b01004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/27/2017] [Indexed: 05/29/2023]
Abstract
Presented herein is a first major density functional theory (BP86/D3/STO-TZ2P) survey of the energetics of saddling versus ruffling for a wide range of dodecasubstituted metalloporphyrins with M = Ni, Cu, Zn, Pd, and Pt. For the majority of X8TPP (i.e., β-octasubstituted-meso-tetraphenylporphyrin), the calculations indicated a clear preference for the saddled conformation, consistent with a large body of experimental data. The preference for the saddled conformation relative to the ruffled conformation was found to vary from about ∼0.3-0.4 eV for Me8TPP derivatives up to 1 eV for I8TPP and (CF3)8TPP derivatives. For X = Ph, that is, dodecaphenylporphyrins, the saddled and the ruffled conformation are almost equienergetic, with even a slight preference for the ruffled conformation in some cases. This finding provides a satisfactory explanation for the X-ray crystallographic observation of both saddled and ruffled conformations for dodecaphenylporphyrin complexes as well as for spectroscopic evidence for conformational mobility of these complexes in solution. The calculations also indicate near-equienergetic saddled and ruffled conformations for meso-tetraacetylenyltetrabenzoporphyrins, again consonant with key crystallographic findings. By and large, both the energetics and nonplanar distortions of the metalloporphyrin derivatives correlated well with the Charton and Sterimol B1 steric parameters of the peripheral substituents.
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Affiliation(s)
- Jeanet Conradie
- Department
of Chemistry and Center for Theoretical and Computational Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
- Department
of Chemistry, University of the Free State, PO Box 339, 9300 Bloemfontein, Republic of South Africa
| | - Abhik Ghosh
- Department
of Chemistry and Center for Theoretical and Computational Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
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19
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Chaudhri N, Grover N, Sankar M. Versatile Synthetic Route for β-Functionalized Chlorins and Porphyrins by Varying the Size of Michael Donors: Syntheses, Photophysical, and Electrochemical Redox Properties. Inorg Chem 2017; 56:11532-11545. [DOI: 10.1021/acs.inorgchem.7b01158] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Nivedita Chaudhri
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Nitika Grover
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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20
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21
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Dong ZM, Wang W, Wang YB, Wang JN, Qin LY, Wang Y. A reversible colorimetric chemosensor for “Naked Eye” sensing of cyanide ion in semi-aqueous solution. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.02.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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22
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Maurya N, Singh AK. Effective ensemble system for the identification of CN− based on a cobalt(ii) complex: a logic gate mimic. NEW J CHEM 2017. [DOI: 10.1039/c6nj03926j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel reaction-based sensor [4-hydroxy-6-methyl-3-(1-(3-methylpyridin-2-ylimine)ethyl)-2H-chromene-2-one-Co2+] has been synthesized for the sensitive and selective detection of CN−.
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Affiliation(s)
- Nirma Maurya
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
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23
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Rathi P, Chahal MK, Sankar M. Highly electron deficient tetrabenzoquinone-appended Ni(ii) and Cu(ii) porphyrins: spectral, solvatochromatic, electrochemical redox and tuneable F−and CN−sensing properties. NEW J CHEM 2017. [DOI: 10.1039/c7nj01866e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The electron deficient tetrabenzoquinone-appended porphyrins (1and2) were synthesized and utilized for the selective detection of CN−ions in aqueous media whereas they detect F−and CN−ions in nonaqueous media.
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Affiliation(s)
- Pinki Rathi
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Mandeep K. Chahal
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Muniappan Sankar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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24
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Bencini A, Lippolis V. Metal-based optical chemosensors for CN - detection. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:24451-24475. [PMID: 27528520 DOI: 10.1007/s11356-016-7419-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 08/04/2016] [Indexed: 05/06/2023]
Abstract
This critical review focuses on recent advances (2010-2015) in the detection of cyanide anion via metal-based optical chemosensors in which a change in colour and/or fluorescence intensity (or emission wavelength) of a molecular metal complex is determined by the direct interaction of the metal centre with this anion.
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Affiliation(s)
- Andrea Bencini
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy.
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042, Monserrato, Italy.
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25
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Bejoymohandas KS, Kumar A, Sreenadh S, Varathan E, Varughese S, Subramanian V, Reddy MLP. A Highly Selective Chemosensor for Cyanide Derived from a Formyl-Functionalized Phosphorescent Iridium(III) Complex. Inorg Chem 2016; 55:3448-61. [PMID: 27008242 DOI: 10.1021/acs.inorgchem.5b02885] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new phosphorescent iridium(III) complex, bis[2',6'-difluorophenyl-4-formylpyridinato-N,C4']iridium(III) (picolinate) (IrC), was synthesized, fully characterized by various spectroscopic techniques, and utilized for the detection of CN(-) on the basis of the widely known hypothesis of the formation of cyanohydrins. The solid-state structure of the developed IrC was authenticated by single-crystal X-ray diffraction. Notably, the iridium(III) complex exhibits intense red phosphorescence in the solid state at 298 K (ΦPL = 0.16) and faint emission in acetonitrile solution (ΦPL = 0.02). The cyanide anion binding properties with IrC in pure and aqueous acetonitrile solutions were systematically investigated using two different channels: i.e., by means of UV-vis absorption and photoluminescence. The addition of 2.0 equiv of cyanide to a solution of the iridium(III) complex in acetonitrile (c = 20 μM) visibly changes the color from orange to yellow. On the other hand, the PL intensity of IrC at 480 nm was dramatically enhanced ∼5.36 × 10(2)-fold within 100 s along with a strong signature of a blue shift of the emission by ∼155 nm with a detection limit of 2.16 × 10(-8) M. The cyanohydrin formation mechanism is further supported by results of a (1)H NMR titration of IrC with CN(-). As an integral part of this work, phosphorescent test strips have been constructed by impregnating Whatman filter paper with IrC for the trace detection of CN(-) in the contact mode, exhibiting a detection limit at the nanogram level (∼265 ng/mL). Finally, density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations were performed to understand the electronic structure and the corresponding transitions involved in the designed phosphorescent iridium(III) complex probe and its cyanide adduct.
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Affiliation(s)
- K S Bejoymohandas
- Materials Science and Technology Division, CSIR-Network of Institutes for Solar Energy, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110025, India
| | - Ajay Kumar
- Materials Science and Technology Division, CSIR-Network of Institutes for Solar Energy, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram 695 019, India
| | - S Sreenadh
- Materials Science and Technology Division, CSIR-Network of Institutes for Solar Energy, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram 695 019, India
| | - E Varathan
- Chemical Laboratory, CSIR-Central Leather Research Institute , Chennai 600 020, India
| | - S Varughese
- Materials Science and Technology Division, CSIR-Network of Institutes for Solar Energy, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram 695 019, India
| | - V Subramanian
- Chemical Laboratory, CSIR-Central Leather Research Institute , Chennai 600 020, India
| | - M L P Reddy
- Materials Science and Technology Division, CSIR-Network of Institutes for Solar Energy, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110025, India
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26
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Wan L, Shu Q, Zhu J, Jin S, Li N, Chen X, Chen S. A new multifunctional Schiff-based chemosensor for mask-free fluorimetric and colorimetric sensing of F⁻ and CN⁻. Talanta 2016; 152:39-44. [PMID: 26992493 DOI: 10.1016/j.talanta.2016.01.045] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/21/2016] [Accepted: 01/23/2016] [Indexed: 01/27/2023]
Abstract
A Schiff-based chemosensor DSS was designed for selective and simultaneous detection and/or determination of F(-) and CN(-) by distinguishable changes in both solution color and spectroscopic responses within same sample due to the strong emission enhancement at distinct emission bands without any mask. In addition, the sensing mechanism was evaluated by NMR titration and DFT calculations.
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Affiliation(s)
- Li Wan
- School of Material Science and Engineering, Beijing Institute of Technology, 100081 Beijing, PR China
| | - Qinghai Shu
- School of Material Science and Engineering, Beijing Institute of Technology, 100081 Beijing, PR China.
| | - Jiaping Zhu
- School of Material Science and Engineering, Beijing Institute of Technology, 100081 Beijing, PR China
| | - Shaohua Jin
- School of Material Science and Engineering, Beijing Institute of Technology, 100081 Beijing, PR China
| | - Na Li
- School of Material Science and Engineering, Beijing Institute of Technology, 100081 Beijing, PR China
| | - Xin Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, PR China.
| | - Shusen Chen
- School of Material Science and Engineering, Beijing Institute of Technology, 100081 Beijing, PR China
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27
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Chandra Mohan S, Bhattacharjee D, Chandra Deka R, Jothivenkatachalam K. Combined experimental and theoretical investigations on the encapsulation of nickel(ii)tet-a complex in zeolite Y and its photocatalytic activity. RSC Adv 2016. [DOI: 10.1039/c6ra15179e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Photocatalytic mechanism of the 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane [tet-a] nickel(ii) encapsulated in zeolite Y.
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28
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Shiraishi Y, Nakamura M, Matsushita N, Hirai T. A pyrylium–coumarin dyad as a colorimetric receptor for ratiometric detection of cyanide anions by two absorption bands in the visible region. NEW J CHEM 2016. [DOI: 10.1039/c5nj02219c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pyrylium–coumarin dyad behaves as a colorimetric receptor for ratiometric detection of cyanide anions in aqueous media by two absorption bands in the visible wavelength region.
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Affiliation(s)
- Yasuhiro Shiraishi
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
| | - Masaya Nakamura
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
| | - Naoyuki Matsushita
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
| | - Takayuki Hirai
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
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29
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Sun X, Wang Y, Deng X, Zhang J, Zhang Z. A colorimetric and ratiometric fluorescent probe for the selective detection of cyanide anions in aqueous media and living cells. RSC Adv 2016. [DOI: 10.1039/c5ra26587h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Based on the internal charge transfer (ICT) mechanism, a novel colorimetric and ratiometric fluorescent probe was developed for highly selective and sensitive detection of cyanide ion in aqueous media.
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Affiliation(s)
- Xueyi Sun
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Yu Wang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Xiahe Deng
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Junfang Zhang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Zhao Zhang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
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30
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Kumar R, Yadav P, Rathi P, Sankar M. Synthesis, spectroscopic, electrochemical redox, solvatochromism and anion binding properties of β-tetra- and -octaphenylethynyl substituted meso-tetraphenylporphyrins. RSC Adv 2015. [DOI: 10.1039/c5ra15211a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
β-Phenylethynyl (PE) porphyrins exhibited unique photophysical properties and solvatochromic behavior due to ICT from the porphyrin core to PE moieties. Further, Zn(ii) porphyrins were utilized for anion sensing.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee - 247667
- India
| | - Pinky Yadav
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee - 247667
- India
| | - Pinki Rathi
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee - 247667
- India
| | - Muniappan Sankar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee - 247667
- India
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31
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Kumar R, Chaudhary N, Sankar M, Maurya MR. Electron deficient nonplanar β-octachlorovanadylporphyrin as a highly efficient and selective epoxidation catalyst for olefins. Dalton Trans 2015; 44:17720-9. [DOI: 10.1039/c5dt02349a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Highly electron deficient and nonplanar β-octachlorovanadylporphyrin (VOTPPCl8) was synthesized and utilized for selective epoxidation of olefins with very high TOF numbers (6566-9650 h−1).
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Nikita Chaudhary
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Muniappan Sankar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Mannar R. Maurya
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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32
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Chahal MK, Sankar M. Porphyrin chemodosimeters: synthesis, electrochemical redox properties and selective ‘naked-eye’ detection of cyanide ions. RSC Adv 2015. [DOI: 10.1039/c5ra19847j] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
β-Dicyanovinyl substituted porphyrins have been synthesized and utilized as chemodosimeters for ratiometric and colorimetric sensing of cyanide ions in CH3CN and H2O/CH3CN mixture.
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Affiliation(s)
- Mandeep K. Chahal
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Muniappan Sankar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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