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Borah ST, Das B, Biswas P, Mallick AI, Gupta P. Aqua-friendly organometallic Ir-Pt complexes: pH-responsive AIPE-guided imaging of bacterial cells. Dalton Trans 2023; 52:2282-2292. [PMID: 36723088 DOI: 10.1039/d2dt03390a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In this work, the aggregation-induced photoluminescence emission (AIPE) of three water-soluble heterobimetallic Ir-Pt complexes was reported with insight into their photophysical and electrochemical properties and imaging of bacterial cells. An alkyne appended Schiff's base L, bridges bis-cyclometalated iridium(III) and platinum(II) terpyridine centre. The Schiff's base (N-N fragment) serves as the ancillary ligand to the iridium(III) centre, while the alkynyl end is coordinated to platinum(II). The pH and ionic strength influence the aggregation kinetics of the alkynylplatinum(II) fragment, leading to metal-metal and π-π interactions with the emergence of a triplet metal-metal-to-ligand charge transfer (3MMLCT) emission. The excellent reversibility and photostability of aggregation-induced emission (AIE) of these aqua-friendly complexes were tested for their ability to sense and selectively image E. coli cells at various pH values.
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Affiliation(s)
- Sakira Tabassum Borah
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Bishnu Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Prakash Biswas
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Amirul I Mallick
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Parna Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
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2
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Pyridine aldoxime ligation to iridium(III) centre: An innocent ancillary ligand in a series of organometallic complexes. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.133998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Gopalakrishnan AK, Angamaly SA, Velayudhan MP. An Insight into the Biological Properties of Imidazole‐Based Schiff Bases: A Review. ChemistrySelect 2021. [DOI: 10.1002/slct.202102619] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Anjali K. Gopalakrishnan
- Department of Applied Chemistry Cochin University of Science and Technology, Kochi 22 Kerala India
| | - Shanty A. Angamaly
- Department of Applied Chemistry Cochin University of Science and Technology, Kochi 22 Kerala India
| | - Mohanan P. Velayudhan
- Department of Applied Chemistry Cochin University of Science and Technology, Kochi 22 Kerala India
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4
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Mansouri G, Ghobadi M, Notash B. Synthesis, spectroscopic, structural, DFT and antibacterial studies of cyclometalated rhodium(III) complex based on morpholinedithiocarbamate ligand. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Priyadarshini GS, Muthusankar A, Subramani R, Gopal S. Evaluation of the Synthesized Novel Iridium (III) Complexes Against HeLa Cell Lines Through In-Silico, In-Vitro and DNA Nicking. Asian Pac J Cancer Prev 2021; 22:447-455. [PMID: 33639659 PMCID: PMC8190364 DOI: 10.31557/apjcp.2021.22.2.447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Indexed: 11/25/2022] Open
Abstract
Globally, the pharmaceutical industry is continuously driven in search of new anticancer drugs due to increasing rate of cancer patients. Clinical trials of Cisplatin has been explored, however, usage of Cisplatin as a drug is limited due to its various side effects, hence, alternative to platinum based complex drugs and its analogues are needed. Iridium complexes have been attracted widespread interests by virtue of their pharmacological and photo-physical properties; however the less number of complexes was reported in the literature. In this article, a new series of novel Iridium (III) complexes were synthesized using substituted quinoline Schiff Base (SB) ligands and characterized by spectroscopic techniques. The in- vitro cyto-toxicity assay showed that the Iridium (III) complex activity is equal to standard Cisplatin. In addition, computational docking studies have shown that the prominent binding sites for synthesized complexes against HeLa cell lines, which is comparable with standard Cisplatin drugs and other Ruthenium complexes.
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Affiliation(s)
- G Sathya Priyadarshini
- Department of Chemistry, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, India
| | - Aathi Muthusankar
- Protein Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Ramesh Subramani
- Department of Food Processing Technology & Management, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, India
| | - Selvi Gopal
- Department of Chemistry, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, India
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6
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Synthesis, characterisation and theoretical studies of a series of Iridium (III) heteroleptic complexes with Schiff base ligands. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128058] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Gurung RK, McMillen CD, Jarrett WL, Holder AA. Synthesis, characterization, NMR spectroscopic, and X-ray crystallographic studies of new titanium(IV) Schiff base salen complexes: Formation of intriguing titanium(IV) species. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119496] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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8
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Roy P, Sarkar D, Ghosh P, Manna CK, Murmu N, Mondal TK. Synthesis of luminescent rhodium(III) cyclometalated complex by sp2(C)–S bond activation: Application as catalyst in transfer hydrogenation of ketones and live cell imaging. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Barry KL, Grimmer CD, Munro OQ, Akerman MP. Self-assembled supramolecular structures of O, N, N' tridentate imidazole-phenol Schiff base compounds. RSC Adv 2020; 10:7867-7878. [PMID: 35492155 PMCID: PMC9049879 DOI: 10.1039/c9ra10488g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 02/16/2020] [Indexed: 01/25/2023] Open
Abstract
Three imidazole-derived Schiff base compounds comprising an N-methyl imidazole group coupled to a phenol ring through an imine bond were synthesised. The structures differ by the substituent on the phenol ring at the 4-position: methyl (1), tert-butyl (2) and hydrogen (3). The compounds were synthesised using both a traditional reflux in solvent as well as an environmentally friendly solid-state reaction. Compounds (1)–(3) as well as the hemihydrate of (3) were all studied by single crystal X-ray diffraction. The asymmetric unit of compound (1) consists of two nominally planar molecules linked by hydrogen bonds to form a dimeric supramolecular structure. This dimeric structure was ubiquitous for the anhydrous forms of (1)–(3). The complementary hydrogen bonding motif between the imidazole N atoms and the phenol OH results in a stable 16-membered hydrogen-bonded ring. The asymmetric unit of (3) comprises two symmetry-independent molecules one of which has co-planar imidazole and phenol rings while the other shows a significantly oblique orientation. The hemihydrate of (3) similarly forms extensive hydrogen bonds, though in the form of a water-bridged dimeric structure. The hydrogen bond lengths (D⋯A) for compounds (1)–(3) are relatively short, ranging from 2.662(1) to 2.688(1) Å. DFT was used to understand the relative stability of the monomeric and dimeric species. These showed the hydrogen-bonded supramolecular structures were ca. 101 kJ mol−1 lower in energy than the non-interacting monomers. Scan simulations were used to calculate the total energy of the molecule as a function of phenyl ring rotation and showed why the expected planar configuration for a conjugated π-system was not observed experimentally. The barrier to rotation was found to be relatively low, 7.97(6) kJ mol−1, with the lowest energy conformations subtending dihedral angles of 22.319, 24.265 and 25.319° for molecules (1), (2) and (3), respectively. The electrostatic potential maps are able to succinctly explain the stability of the hydrogen bonds through the partial charges of the interacting atoms. TD-DFT simulations and analysis of the simulated and experimental UV/visible spectra suggest that the dimeric supramolecular structure is a stable species in solution. This was confirmed through 1H NMR titrations and an equilibrium constant of 0.16(5) M−1 was estimated. Three imidazole-derived Schiff base compounds comprising an N-methyl imidazole group coupled to a phenol ring through an imine bond were synthesised. The solid state and solution state supramolecular structures as well as energetics are explored.![]()
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Affiliation(s)
- Kristy-Lyn Barry
- School of Chemistry and Physics, University of KwaZulu-Natal Private Bag X01, Scottsville Pietermaritzburg 3209 South Africa
| | - Craig D Grimmer
- School of Chemistry and Physics, University of KwaZulu-Natal Private Bag X01, Scottsville Pietermaritzburg 3209 South Africa
| | - Orde Q Munro
- Molecular Sciences Institute, School of Chemistry, WITS University Johannesburg South Africa
| | - Matthew P Akerman
- School of Chemistry and Physics, University of KwaZulu-Natal Private Bag X01, Scottsville Pietermaritzburg 3209 South Africa
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Ramdass A, Sathish V, Velayudham M, Thanasekaran P, Rajagopal S. Phosphorescence “Turn-On” Sensing of Anions by Rhenium(I) Schiff-Base Complexes. ChemistrySelect 2018. [DOI: 10.1002/slct.201702306] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Arumugam Ramdass
- Research Department of Chemistry; Aditanar College of Arts and Science; Tiruchendur - 628 216 India
| | - Veerasamy Sathish
- Department of Chemistry; Bannari Amman Institute of Technology; Sathyamangalam - 638 401 India
| | - Murugesan Velayudham
- Department of Chemistry; Thiagarajar College of Engineering; Madurai - 625015 India
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11
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Ispir E, Sahin E, Ikiz M, Aktas A. Comparative transfer hydrogenation performance of homogeneous and heterogeneous ruthenium (II) catalysts derived from a Schiff base ligand. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.12.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Huang Y, Cao J, Zhang Q, Lu ZR, Hua MQ, Zhang XY, Gao H. Chitosan oligosaccharide based Gd-DTPA complex as a potential bimodal magnetic resonance imaging contrast agent. Magn Reson Imaging 2016; 34:1-7. [DOI: 10.1016/j.mri.2015.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 08/28/2015] [Accepted: 10/12/2015] [Indexed: 12/29/2022]
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Benzon KB, Varghese HT, Panicker CY, Pradhan K, Tiwary BK, Nanda AK, Alsenoy CV. Spectroscopic and theoretical characterization of 2-(4-methoxyphenyl)-4,5-dimethyl-1H-imidazole 3-oxide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:965-979. [PMID: 26188703 DOI: 10.1016/j.saa.2015.07.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 07/01/2015] [Accepted: 07/03/2015] [Indexed: 06/04/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 2-(4-methoxyphenyl)-4,5-dimethyl-1H-imidazole 3-oxide have been investigated experimentally and theoretically. Gauge-including atomic orbital (1)H NMR chemical shifts calculations were carried out and compared with experimental data. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The calculated geometrical parameters are in agreement with that of similar derivatives. Molecular electrostatic potential was performed by the DFT method. Mulliken's net charges have been calculated and compared with the atomic natural charges. First and second hyperpolarizability are calculated in order to find its role in non-linear optics. Molecular docking is also reported.
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Affiliation(s)
- K B Benzon
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India
| | | | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India
| | - Kiran Pradhan
- Department of Chemistry, University of North Bengal, Siliguri, West Bengal, India
| | - Bipransh Kumar Tiwary
- Department of Biotechnology, University of North Bengal, Siliguri, West Bengal, India
| | - Ashis Kumar Nanda
- Department of Chemistry, University of North Bengal, Siliguri, West Bengal, India
| | - C Van Alsenoy
- Department of Chemistry, University of Antwerp, B2610 Antwerp, Belgium
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Mukhopadhyay S, Gupta RK, Paitandi RP, Rana NK, Sharma G, Koch B, Rana LK, Hundal MS, Pandey DS. Synthesis, Structure, DNA/Protein Binding, and Anticancer Activity of Some Half-Sandwich Cyclometalated Rh(III) and Ir(III) Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00475] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | - Love Karan Rana
- Department
of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
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15
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Synthesis and the characterization of Schiff-base copper complexes: Reactivity with DNA, 4-NPP and BNPP. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.12.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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