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Singh A, Barman P. Recent Advances in Schiff Base Ruthenium Metal Complexes: Synthesis and Applications. Top Curr Chem (Cham) 2021; 379:29. [PMID: 34109453 DOI: 10.1007/s41061-021-00342-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 05/25/2021] [Indexed: 11/29/2022]
Abstract
This review concentrates on recent developments in ruthenium Schiff bases, whose steric and electronic characteristics can be manipulated easily by selecting suitable condensing aldehydes or ketones and primary amines, and their metal complexes. Ruthenium metal-based complexes and Schiff base ligands are rapidly becoming conventionally considered for biological applications (antioxidant, anticancer, antimicrobial), in catalysis, in functional materials, in sensors, and as pigments for dyes. Ruthenium complexes exhibit a broad variety of activities concerning simple Schiff base ligands. This may be due to the octahedral bonding of both Ru(II) and Ru(III) complexes, which acquire an extended reservoir of a three-dimensional framework, providing the potential for an elevated degree of site selectivity for binding to their biological targets. This review provides an overview of this field, and intends to highlight both ligand design and synthetic methodology development, as well as significant applications of these metal complexes. In this review, we summarize our work on the development of ruthenium complexes, which was performed over the last few years.
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Affiliation(s)
- Anmol Singh
- Department of Chemistry, National Institute of Technology, Silchar, Assam, India
| | - Pranjit Barman
- Department of Chemistry, National Institute of Technology, Silchar, Assam, India.
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Synthesis, Characterization, and In Vitro Cytotoxicity of Platinum(II) Complexes Bearing Chiral Tetradentate Salicylaldimine Ligands. J CHEM-NY 2020. [DOI: 10.1155/2020/5414959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A series of platinum(II) complexes with chiral Schiff base ligands derived from various salicylaldehydes with (R,R′)- and (S,S′)-cyclohexanediamine were synthesized and characterized by ESI-MS, IR, and NMR. Obtained spectra with typical signals were in agreement with suggested molecular formulae of the complexes. Their photophysical properties were studied by UV-visible and emission spectroscopies. The UV-Vis showed the typical band with low energy at visible range 400–500 nm for MLCT, and this band can emit the luminescent band with emission maximum wavelengths at 529–595 nm. The in vitro cytotoxicity of obtained platinum(II) complexes was screened for KB and MCF-7 human cancer cell lines. The results showed that (S)-enantiomers were more active than (R)-enantiomers and the different positions of methoxy group in salicyl ring gave different cytotoxicities.
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Banerjee S, Capper MS, Clarkson GJ, Huang H, Sadler PJ. Dual-action platinum(II) Schiff base complexes: Photocytotoxicity and cellular imaging. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Gondia N, Sharma S. Spectroscopic characterization and photophysical properties of schiff base metal complex. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Borisov SM, Pommer R, Svec J, Peters S, Novakova V, Klimant I. New red-emitting Schiff base chelates: promising dyes for sensing and imaging of temperature and oxygen via phosphorescence decay time. JOURNAL OF MATERIALS CHEMISTRY. C 2018; 6:8999-9009. [PMID: 30713692 PMCID: PMC6333324 DOI: 10.1039/c8tc02726a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 07/30/2018] [Indexed: 05/03/2023]
Abstract
New complexes of Zn(ii), Pd(ii) and Pt(ii) with Schiff bases are prepared in a one-step condensation of 4-(dibutylamino)-2-hydroxybenzaldehyde and 4,5-diaminophthalonitrile in the presence of a metal salt. The complexes possess efficient absorption in the blue-green part of the spectrum with molar absorption coefficients up to 98 000 M-1 cm-1. The Pt(ii) complex shows very strong red phosphorescence in anoxic solutions at room temperature with a quantum yield of 65% in toluene which places it among the brightest emitters available for this spectral range. The phosphorescence of the Pd(ii) complex under the same conditions is very weak (Φ < 1%) but is enhanced to Φ > 10% upon immobilization into polymers. Optical thermometers based on self-referenced lifetime read-out are prepared upon immobilization of the dyes into gas-blocking poly(vinylidene chloride-co-acrylonitrile). At 25 °C, the materials based on Pd(ii) and Pt(ii) complexes show sensitivities of -2.1 and -0.52%τ/K, respectively. Application of the sensors for imaging of temperature on surfaces (planar optode) and for monitoring of fast temperature fluctuations (fiber-optic microsensor) is demonstrated. Immobilized into a gas-permeable matrix, the Pt(ii) complex also performs as a promising oxygen-sensing material. The new systems are also attractive for imaging of oxygen or temperature with the help of multi-photon microscopy, due to a good match with the biological optical window and much better brightness under two photon excitation compared to that of the conventional Pt(ii) meso-tetra-(pentafluorophenyl)porphyrin.
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Affiliation(s)
- Sergey M Borisov
- Institute of Analytical Chemistry and Food Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 , Graz , Austria .
| | - Reinhold Pommer
- Institute of Analytical Chemistry and Food Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 , Graz , Austria .
| | - Jan Svec
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis , Faculty of Pharmacy in Hradec Kralove , Charles University , Akademika Heyrovskeho 1203 , Hradec Kralove , Czech Republic
| | - Sven Peters
- Department of Ophthalmology , University Hospital Jena , Jena , Germany
| | - Veronika Novakova
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis , Faculty of Pharmacy in Hradec Kralove , Charles University , Akademika Heyrovskeho 1203 , Hradec Kralove , Czech Republic
| | - Ingo Klimant
- Institute of Analytical Chemistry and Food Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 , Graz , Austria .
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Szady-Chełmieniecka A, Kołodziej B, Morawiak M, Kamieński B, Schilf W. Spectroscopic studies of the intramolecular hydrogen bonding in o-hydroxy Schiff bases, derived from diaminomaleonitrile, and their deprotonation reaction products. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:330-341. [PMID: 28830038 DOI: 10.1016/j.saa.2017.08.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 08/03/2017] [Accepted: 08/09/2017] [Indexed: 06/07/2023]
Abstract
The structural study of five Schiff bases derived from diaminomaleonitrile (DAMN) and 2-hydroxy carbonyl compounds was performed using 1H, 13C and 15N NMR methods in solution and in the solid state as well. ATR-FTIR and X-Ray spectroscopies were used for confirmation of the results obtained by NMR method. The imine obtained from DAMN and benzaldehyde was synthesized as a model compound which lacks intramolecular hydrogen bond. Deprotonation of all synthesized compounds was done by treating with tetramethylguanidine (TMG). NMR data revealed that salicylidene Schiff bases in DMSO solution exist as OH forms without intramolecular hydrogen bonds and independent on the substituents in aromatic ring. In the case of 2-hydroxy naphthyl derivative, the OH proton is engaged into weak intramolecular hydrogen bond. Two of imines (salDAMN and 5-BrsalDAMN) exist in DMSO solution as equilibrium mixtures of two isomers (A and B). The structures of equilibrium mixture in the solid state have been studied by NMR, ATR-FTIR and X-Ray methods. The deprotonation of three studied compounds (salDAMN, 5-BrsalDAMN, and 5-CH3salDAMN) proceeded in two different ways: deprotonation of oxygen atom (X form) or of nitrogen atom of free primary amine group of DAMN moiety (Y form). For 5-NO2salDAMN and naphDAMN only one form (X) was observed.
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Affiliation(s)
- Anna Szady-Chełmieniecka
- West Pomeranian University of Technology, Faculty of Chemical Technology and Engineering, Department of Inorganic and Analytical Chemistry, Al. Piastów 42, 71-065 Szczecin, Poland
| | - Beata Kołodziej
- West Pomeranian University of Technology, Faculty of Chemical Technology and Engineering, Department of Inorganic and Analytical Chemistry, Al. Piastów 42, 71-065 Szczecin, Poland.
| | - Maja Morawiak
- Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Bohdan Kamieński
- Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland; Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Wojciech Schilf
- Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland
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Pramanik S, Dutta S, Roy S, Dinda S, Ghorui T, Kumar Mitra A, Pramanik K, Ganguly S. Luminescent closed shell nickel(ii) pyridyl-azo-oximates and the open shell anion radical congener: molecular and electronic structure, ligand redox behaviour and biological activity. NEW J CHEM 2017. [DOI: 10.1039/c7nj00402h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Luminescent nickel(ii) complexes have been synthesized using redox-active azo-oximes. The superior π-acidity of the organic backbone is a key to the isolation of Ni(ii) anion radicals.
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Affiliation(s)
- Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Suhana Dutta
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata
- India
| | - Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Soumitra Dinda
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Arup Kumar Mitra
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata
- India
| | | | - Sanjib Ganguly
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata
- India
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Poma A, Forni A, Baldoli C, Mussini PR, Bossi A. Cyclometalated Pt(ii) complexes with a bidentate Schiff-base ligand displaying unexpected cis/trans isomerism: synthesis, structures and electronic properties. Dalton Trans 2017; 46:12500-12506. [DOI: 10.1039/c7dt02323e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unexpected cis/trans isomerism in a bis-cyclometalated Pt(ii) complex is investigated by NMR, X-ray diffraction, optical, electrochemical and computational methods and rationalized.
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Affiliation(s)
- A. Poma
- Department of Chemistry
- University of Milan
- and SmartMatLab Center via Golgi 19
- 20133 Milano
- Italy
| | - A. Forni
- Institute of Molecular Science and Technology of the CNR (ISTM-CNR)
- 20133 Milan
- Italy
| | - C. Baldoli
- Institute of Molecular Science and Technology of the CNR (ISTM-CNR)
- 20133 Milan
- Italy
| | - P. R. Mussini
- Department of Chemistry
- University of Milan
- and SmartMatLab Center via Golgi 19
- 20133 Milano
- Italy
| | - A. Bossi
- Institute of Molecular Science and Technology of the CNR (ISTM-CNR)
- 20133 Milan
- Italy
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Slodek A, Matussek M, Filapek M, Szafraniec-Gorol G, Szlapa A, Grudzka-Flak I, Szczurek M, Malecki JG, Maron A, Schab-Balcerzak E, Nowak EM, Sanetra J, Olejnik M, Danikiewicz W, Krompiec S. Small Donor-Acceptor Molecules Based on a Quinoline-Fluorene System with Promising Photovoltaic Properties. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600318] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Pasha SS, Alam P, Sarmah A, Roy RK, Laskar IR. Encapsulation of multi-stimuli AIE active platinum(ii) complex: a facile and dry approach for luminescent mesoporous silica. RSC Adv 2016. [DOI: 10.1039/c6ra17273c] [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] Open
Abstract
We report the dissociation of a yellow emitting excimeric and AIE active Pt(ii) complex into the green emitting monomeric form after crushing with mesoporous silica (MS) followed by its encapsulation within the pores of MS.
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Affiliation(s)
- Sheik Saleem Pasha
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
| | - Parvej Alam
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
| | - Amrit Sarmah
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
| | - Ram Kinkar Roy
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
| | - Inamur Rahaman Laskar
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
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