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Kushwaha R, Rai R, Gawande V, Singh V, Yadav AK, Koch B, Dhar P, Banerjee S. Antibacterial Photodynamic Therapy by Zn(II)-Curcumin Complex: Synthesis, Characterization, DFT Calculation, Antibacterial Activity, and Molecular Docking. Chembiochem 2024; 25:e202300652. [PMID: 37921481 DOI: 10.1002/cbic.202300652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/28/2023] [Accepted: 11/02/2023] [Indexed: 11/04/2023]
Abstract
The increase in antibacterial drug resistance is threatening global health conditions. Recently, antibacterial photodynamic therapy (aPDT) has emerged as an effective antibacterial treatment with high cure gain. In this work, three Zn(II) complexes viz., [Zn(en)(acac)Cl] (1), [Zn(bpy)(acac)Cl] (2), [Zn(en)(cur)Cl] (3), where en=ethylenediamine (1 and 3), bpy=2,2'-bipyridine (2), acac=acetylacetonate (1 and 2), cur=curcumin monoanionic (3) were developed as aPDT agents. Complexes 1-3 were synthesized and fully characterized using NMR, HRMS, FTIR, UV-Vis. and fluorescence spectroscopy. The HOMO-LUMO energy gap (Eg), and adiabatic splittings (ΔS1-T1 and ΔS0-T1 ) obtained from DFT calculation indicated the photosensivity of the complexes. These complexes have not shown any potent antibacterial activity under dark conditions but the antibacterial activity of these complexes was significantly enhanced upon light exposure (MIC value up to 0.025 μg/mL) due to their light-mediated 1 O2 generation abilities. The molecular docking study suggested that complexes 1-3 interact efficiently with DNA gyrase B (PDB ID: 4uro). Importantly, 1-3 did not show any toxicity toward normal HEK-293 cells. Overall, in this work, we have demonstrated the promising potential of Zn(II) complexes as effective antibacterial agents under the influence of visible light.
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Affiliation(s)
- Rajesh Kushwaha
- Department of Chemistry, Indian Institute of Technology (BHU), 221005, Varanasi, Uttar Pradesh, India
| | - Rohit Rai
- School of Biochemical Engineering, Indian Institute of Technology (BHU), 221005, Varanasi, Uttar Pradesh, India
| | - Vedant Gawande
- Department of Chemistry, Indian Institute of Technology (BHU), 221005, Varanasi, Uttar Pradesh, India
| | - Virendra Singh
- Department of Zoology, Institution of Science, Banaras Hindu University, 221005, Varanasi, Uttar Pradesh, India
| | - Ashish Kumar Yadav
- Department of Chemistry, Indian Institute of Technology (BHU), 221005, Varanasi, Uttar Pradesh, India
| | - Biplob Koch
- Department of Zoology, Institution of Science, Banaras Hindu University, 221005, Varanasi, Uttar Pradesh, India
| | - Prodyut Dhar
- School of Biochemical Engineering, Indian Institute of Technology (BHU), 221005, Varanasi, Uttar Pradesh, India
| | - Samya Banerjee
- Department of Chemistry, Indian Institute of Technology (BHU), 221005, Varanasi, Uttar Pradesh, India
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Mandal A, Rai R, Saha S, Kushwaha R, Wei L, Gogoi H, Mandal AA, Yadav AK, Huang H, Dutta A, Dhar P, Banerjee S. Polypyridyl-based Co(III) complexes of vitamin B 6 Schiff base for photoactivated antibacterial therapy. Dalton Trans 2023; 52:17562-17572. [PMID: 37965840 DOI: 10.1039/d3dt02967k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Herein, five novel polypyridyl-based Co(III) complexes of Schiff bases, viz., [Co(dpa)(L1)]Cl (1), [Co(dpa)(L2)]Cl (2), [Co(L3)(L2)]Cl (3), [Co(L3)(L1)]Cl (4), and [Co(L4)(L1)]Cl (5), where dpa (dipicolylamine) = bis(2-pyridylmethyl)amine; H2L1 = (E)-2-((2-hydroxybenzylidene)amino)phenol; H2L2 = (E)-5-(hydroxymethyl)-4-(((2-hydroxyphenyl)imino)methyl)-2-methylpyridin-3-ol; L3 = 4'-phenyl-2,2':6',2''-terpyridine (ph-tpy); and L4 = 4'-ferrocenyl-2,2':6',2''-terpyridine (Fc-tpy), were synthesized and characterized. Complexes 1, 3, and 4 were structurally characterized by single-crystal XRD, indicating an octahedral CoIIIN4O2 coordination core. The absorption bands of these complexes were observed in the visible range with a λmax at ∼430-485 nm. Complex 5 displayed an extra absorption band near 545 nm because of a ferrocene moiety. These absorptions in the visible region reflect the potential of the complexes to act as visible-light antimicrobial photodynamic therapy (aPDT) agents. All of these complexes showed reactive oxygen species (ROS)-mediated antibacterial effects against S. aureus (Gram-positive) and E. coli (Gram-negative bacteria) upon low-energy visible light (0.5 J cm-2, 400-700 nm) exposure. Additionally, 1-5 did not show any toxicity toward A549 (Human Lung adenocarcinoma) cells, reflecting their selective bacteria-killing abilities.
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Affiliation(s)
- Apurba Mandal
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
| | - Rohit Rai
- School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, Varanasi, Uttar Pradesh, India 221005.
| | - Sukanta Saha
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Rajesh Kushwaha
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
| | - Li Wei
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, 518107, China.
| | - Hemonta Gogoi
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
| | - Arif Ali Mandal
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
| | - Ashish Kumar Yadav
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
| | - Huayi Huang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, 518107, China.
| | - Arnab Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Prodyut Dhar
- School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, Varanasi, Uttar Pradesh, India 221005.
| | - Samya Banerjee
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
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Dao A, Yadav AK, Wei L, Banerjee S, Huang H. Combination of Immunotherapy and Photo-Pyroptosis as Novel Anticancer Strategy. Chembiochem 2022; 23:e202200201. [PMID: 35438233 DOI: 10.1002/cbic.202200201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/17/2022] [Indexed: 11/11/2022]
Abstract
Immunotherapy has made great progress in clinical cancer treatment in recent years, but the therapeutic efficacy was significantly limited by the lack of immunogenicity in the tumor microenvironment. Pyroptosis is a kind of programmed cell death in which the dying cancer cells produce inflammatory cytokines to relieve immuno-suppressive microenvironment and thus increase anti-tumor immunity. Reactive oxygen species (ROS) produced during photodynamic therapy (PDT) is one of the efficient activators to induce pyroptosis. Recently, a few photosensitizers have emerged with the ability to induce immunogenic cancer cell death via pyroptosis, opening up a new field for PDT. This highlight introduces the latest research on anti-tumor strategies achieved by the combination of immunotherapy and photodynamic therapy through photo-pyroptosis.
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Affiliation(s)
- Anyi Dao
- Sun Yat-Sen University, School of Pharmaceutical Science (Shenzhen), CHINA
| | - Ashish Kumar Yadav
- IIT BHU: Indian Institute of Technology BHU Varanasi, Department of Chemistry, INDIA
| | - Li Wei
- Sun Yat-Sen University, School of Pharmaceutical Science (Shenzhen), CHINA
| | - Samya Banerjee
- Indian Institute of Technology BHU Varanasi, Chemistry, BHU, Varanasi, 221005, Varanasi, INDIA
| | - Huaiyi Huang
- Sun Yat-Sen University, School of Pharmaceutical Science (Shenzhen), CHINA
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Dao A, Kushwaha R, Kumar A, Huang H, Banerjee S. Engineered exosomes as a photosensitizer delivery platform for cancer photodynamic therapy. ChemMedChem 2022; 17:e202200119. [PMID: 35384336 DOI: 10.1002/cmdc.202200119] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/04/2022] [Indexed: 11/10/2022]
Abstract
Photodynamic therapy (PDT), a non/minimally invasive cancer treatment method, has the advantages of low side effects, high selectivity, and low drug resistance. It is currently a popular cancer treatment method. However, the shortcomings of photosensitizers such as poor photostability, poor water solubility, and short half-life in vivo when used alone, the development of photosensitizer nano-delivery platforms have always been a research hotspot. In the human body, various types of cells generally release exosomes, the bilayer extracellular vesicles. Compared with traditional materials, exosomes are currently an ideal drug delivery platform due to their homology, low immunogenicity, easy modification, high biocompatibility, and natural carrying capacity. Therefore, in this concept, we focus on the research status and prospects of engineered exosome-based photosensitizer nano-delivery platforms in cancer PDT.
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Affiliation(s)
- Anyi Dao
- Sun Yat-Sen University, School of Pharmaceutical Science (Shenzhen), INDIA
| | - Rajesh Kushwaha
- Indian Institute of Technology BHU Varanasi, Chemistry, BHU Varanasi, 221005, Varanasi, INDIA
| | - Ashish Kumar
- Indian Institute of Technology BHU Varanasi, Chemistry, BHU Varanasi, 221005, Varanasi, INDIA
| | - Huaiyi Huang
- Sun Yat-Sen University, School of Pharmaceutical Science (Shenzhen), CHINA
| | - Samya Banerjee
- Indian Institute of Technology BHU Varanasi, Chemistry, BHU, Varanasi, 221005, Varanasi, INDIA
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Dasari S, Singh S, Abbas Z, Sivakumar S, Patra AK. Luminescent lanthanide(III) complexes of DTPA-bis(amido-phenyl-terpyridine) for bioimaging and phototherapeutic applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 256:119709. [PMID: 33823402 DOI: 10.1016/j.saa.2021.119709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/31/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
We report here a series of coordinatively-saturated and thermodynamically stable luminescent [Ln(dtntp)(H2O)] [Ln(III) = Eu (1), Tb (2), Gd (3), Sm (4) and Dy (5)] complexes using an aminophenyl-terpyridine appended-DTPA (dtntp) chelating ligand as cell imaging and photocytotoxic agents. The N,N″-bisamide derivative of H5DTPA named as dtntp is based on 4'-(4-aminophenyl)-2,2':6',2″-terpyridine conjugated to diethylenetriamine-N,N',N″-pentaacetic acid. The structure, physicochemical properties, detailed photophysical aspects, interaction with DNA and serum proteins, and photocytotoxicity were studied. The intrinsic luminescence of Eu(III) and Tb(III) complexes due to f → f transitions used to evaluate their cellular uptake and distribution in cancer cells. The solid-state structure of [Eu(dtntp)(DMF)] (1·DMF) shows a discrete mononuclear molecule with nine-coordinated {EuN3O6} distorted tricapped-trigonal prism (TTP) coordination geometry around the Eu(III). The {EuN3O6} core results from three nitrogen atoms and three carboxylate oxygen atoms, and two carbonyl oxygen atoms of the amide groups of dtntp ligand. The ninth coordination site is occupied by an oxygen atom of DMF as a solvent from crystallization. The designed probes have two aromatic pendant phenyl-terpyridine (Ph-tpy) moieties as photo-sensitizing antennae to impart the desirable optical properties for cellular imaging and photocytotoxicity. The photostability, coordinative saturation, and energetically rightly poised triplet states of dtntp ligand allow the efficient energy transfer (ET) from Ph-tpy to the emissive excited states of the Eu(III)/Tb(III), makes them luminescent cellular imaging probes. The Ln(III) complexes show significant binding tendency to DNA (K ~ 104 M-1), and serum proteins (BSA and HSA) (K ~ 105 M-1). The luminescent Eu(III) (1) and Tb(III) (2) complexes were utilized for cellular internalization and cytotoxicity studies due to their optimal photophysical properties. The cellular uptake studies using fluorescence imaging displayed intracellular (cytosolic and nuclear) localization in cancer cells. The complexes 1 and 2 displayed significant photocytotoxicity in HeLa cells. These results offer a modular design strategy with further scope to utilize appended N,N,N-donor tpy moiety for developing light-responsive luminescent Ln(III) bioprobes for theranostic applications.
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Affiliation(s)
- Srikanth Dasari
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Swati Singh
- Department of Chemical Engineering and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Zafar Abbas
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Sri Sivakumar
- Department of Chemical Engineering and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Ashis K Patra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India.
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Berrones Reyes J, Kuimova MK, Vilar R. Metal complexes as optical probes for DNA sensing and imaging. Curr Opin Chem Biol 2021; 61:179-190. [PMID: 33784589 DOI: 10.1016/j.cbpa.2021.02.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/17/2021] [Accepted: 02/18/2021] [Indexed: 12/13/2022]
Abstract
Transition and lanthanide metal complexes have rich photophysical properties that can be used for cellular imaging, biosensing and phototherapy. One of the applications of such luminescent compounds is the detection and visualisation of nucleic acids. In this brief review, we survey the recent literature on the use of luminescent metal complexes (including ReI, RuII, OsII, IrIII, PtII, EuIII and TbIII) as DNA optical probes, including examples of compounds that bind selectively to non-duplex DNA topologies such as quadruplex, i-motif and DNA mismatches. We discuss the applications of metal-based luminescent complexes in cellular imaging, including time-resolved microscopy and super-resolution techniques. Their applications in biosensing and phototherapy are briefly mentioned in the relevant sections.
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Affiliation(s)
- Jessica Berrones Reyes
- Department of Chemistry, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
| | - Marina K Kuimova
- Department of Chemistry, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK.
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Al-Enezi E, Vakurov A, Eades A, Ding M, Jose G, Saha S, Millner P. Affimer-Based Europium Chelates Allow Sensitive Optical Biosensing in a Range of Human Disease Biomarkers. SENSORS 2021; 21:s21030831. [PMID: 33513673 PMCID: PMC7865513 DOI: 10.3390/s21030831] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 12/16/2022]
Abstract
The protein biomarker measurement has been well-established using ELISA (enzyme-linked immunosorbent assay), which offers good sensitivity and specificity, but remains slow and expensive. Certain clinical conditions, where rapid measurement or immediate confirmation of a biomarker is paramount for treatment, necessitate more rapid analysis. Biosensors offer the prospect of reagent-less, processing-free measurements at the patient's bedside. Here, we report a platform for biosensing based on chelated Eu3+ against a range of proteins including biomarkers of cardiac injury (human myoglobin), stroke (glial fibrillary acidic protein (GFAP)), inflammation (C-reactive protein (CRP)) and colorectal cancer (carcinoembryonic antigen (CEA)). The Eu3+ ions are chelated by modified synthetic binding proteins (Affimers), which offer an alternative targeting strategy to existing antibodies. The fluorescence characteristics of the Eu3+ complex with modified Affimers against human myoglobin, GFAP, CRP and CEA were measured in human serum using λex = 395 nm, λem = 590 and 615 nm. The Eu3+-Affimer based complex allowed sensitive detection of human myoglobin, GFAP, CRP and CEA proteins as low as 100 fM in (100-fold) diluted human serum samples. The unique dependence on Eu3+ fluorescence in the visible region (590 and 615 nm) was exploited in this study to allow rapid measurement of the analyte concentration, with measurements in 2 to 3 min. These data demonstrate that the Affimer based Eu3+ complexes can function as nanobiosensors with potential analytical and diagnostic applications.
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Affiliation(s)
- Eiman Al-Enezi
- Bionanotechnology Group, School of Biomedical Science, University of Leeds, Leeds LS2 9JT, UK; (E.A.-E.); (A.V.); (A.E.); (M.D.)
| | - Alexandre Vakurov
- Bionanotechnology Group, School of Biomedical Science, University of Leeds, Leeds LS2 9JT, UK; (E.A.-E.); (A.V.); (A.E.); (M.D.)
| | - Amy Eades
- Bionanotechnology Group, School of Biomedical Science, University of Leeds, Leeds LS2 9JT, UK; (E.A.-E.); (A.V.); (A.E.); (M.D.)
| | - Mingyu Ding
- Bionanotechnology Group, School of Biomedical Science, University of Leeds, Leeds LS2 9JT, UK; (E.A.-E.); (A.V.); (A.E.); (M.D.)
| | - Gin Jose
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK;
| | - Sikha Saha
- School of Medicine, University of Leeds, Leeds LS2 9JT, UK;
| | - Paul Millner
- Bionanotechnology Group, School of Biomedical Science, University of Leeds, Leeds LS2 9JT, UK; (E.A.-E.); (A.V.); (A.E.); (M.D.)
- Correspondence:
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Multi-Functional Luminescent Coating for Wood Fabric Based on Silica Sol-Gel Approach. Polymers (Basel) 2020; 13:polym13010127. [PMID: 33396910 PMCID: PMC7795870 DOI: 10.3390/polym13010127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 12/25/2020] [Accepted: 12/28/2020] [Indexed: 02/05/2023] Open
Abstract
Environmentally friendly protection coatings have obtained increasing attention for their use in wooden materials, which can be destroyed easily when exposed to outdoor environments. A series of silane sol coatings coordinated with Eu3+ was prepared by hydrolyzing silane compounds. The obtained luminescent coating with three-dimensional net structure showed excellent optical, anti-ultraviolet aging, and thermal stability. The hybrid silane-modified compound coating was well-distributed on the wood by Si–O bonds to prevent its removal. The compound coating could stave off the decomposition of wood by converting ultraviolet light into red light and a charring action can endow the wood with thermal stability at high temperature, demonstrating the improvement of fire resistance and radiation residence following prolonged exposure to ultraviolet light, proving its excellent anti-ultraviolet aging properties.
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DNA Intercalating Near-Infrared Luminescent Lanthanide Complexes Containing Dipyrido[3,2- a:2',3'- c]phenazine (dppz) Ligands: Synthesis, Crystal Structures, Stability, Luminescence Properties and CT-DNA Interaction. Molecules 2020; 25:molecules25225309. [PMID: 33203056 PMCID: PMC7697401 DOI: 10.3390/molecules25225309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/09/2020] [Accepted: 11/09/2020] [Indexed: 11/30/2022] Open
Abstract
In order to create near-infrared (NIR) luminescent lanthanide complexes suitable for DNA-interaction, novel lanthanide dppz complexes with general formula [Ln(NO3)3(dppz)2] (Ln = Nd3+, Er3+ and Yb3+; dppz = dipyrido[3,2-a:2′,3′-c]phenazine) were synthesized, characterized and their luminescence properties were investigated. In addition, analogous compounds with other lanthanide ions (Ln = Ce3+, Pr3+, Sm3+, Eu3+, Tb3+, Dy3+, Ho3+, Tm3+, Lu3+) were prepared. All complexes were characterized by IR spectroscopy and elemental analysis. Single-crystal X-ray diffraction analysis of the complexes (Ln = La3+, Ce3+, Pr3+, Nd3+, Eu3+, Er3+, Yb3+, Lu3+) showed that the lanthanide’s first coordination sphere can be described as a bicapped dodecahedron, made up of two bidentate dppz ligands and three bidentate-coordinating nitrate anions. Efficient energy transfer was observed from the dppz ligand to the lanthanide ion (Nd3+, Er3+ and Yb3+), while relatively high luminescence lifetimes were detected for these complexes. In their excitation spectra, the maximum of the strong broad band is located at around 385 nm and this wavelength was further used for excitation of the chosen complexes. In their emission spectra, the following characteristic NIR emission peaks were observed: for a) Nd3+: 4F3/2 → 4I9/2 (870.8 nm), 4F3/2 → 4I11/2 (1052.7 nm) and 4F3/2 → 4I13/2 (1334.5 nm); b) Er3+: 4I13/2 → 4I15/2 (1529.0 nm) c) Yb3+: 2F5/2 → 2F7/2 (977.6 nm). While its low triplet energy level is ideally suited for efficient sensitization of Nd3+ and Er3+, the dppz ligand is considered not favorable as a sensitizer for most of the visible emitting lanthanide ions, due to its low-lying triplet level, which is too low for the accepting levels of most visible emitting lanthanides. Furthermore, the DNA intercalation ability of the [Nd(NO3)3(dppz)2] complex with calf thymus DNA (CT-DNA) was confirmed using fluorescence spectroscopy.
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Highly selective and potent anti-cancer agents based on 2,9-substituted-1,10-phenanthroline derivatives. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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De S, Ashok Kumar S. Development of highly potent Arene-Ru (II)-ninhydrin complexes for inhibition of cancer cell growth. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Johnson KR, Vittardi SB, Gracia‐Nava MA, Rack JJ, Bettencourt‐Dias A. Wavelength‐Dependent Singlet Oxygen Generation in Luminescent Lanthanide Complexes with a Pyridine‐Bis(Carboxamide)‐Terthiophene Sensitizer. Chemistry 2020; 26:7274-7280. [DOI: 10.1002/chem.202000587] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/03/2020] [Indexed: 12/11/2022]
Affiliation(s)
| | - Sebastian B. Vittardi
- Department of Chemistry and Chemical Biology University of New Mexico Albuquerque NM 87131 USA
| | | | - Jeffrey J. Rack
- Department of Chemistry and Chemical Biology University of New Mexico Albuquerque NM 87131 USA
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Li QF, Ge GW, Sun Y, Yu M, Wang Z. Influence of counter ions on structure, morphology, thermal stability of lanthanide complexes containing dipicolinic acid ligand. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:333-338. [PMID: 30798215 DOI: 10.1016/j.saa.2019.02.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 11/28/2018] [Accepted: 02/16/2019] [Indexed: 06/09/2023]
Abstract
Two kinds of lanthanide coordination polymers formed by dipicolinic acid with lanthanide ions were synthesized by varying the counter ions. And their crystal structures, morphology and thermal stabilities were measured and compared. X-ray single-crystal diffraction analysis reveals that Na3[Ln(DPA)3] (Ln = Tb or Eu) stretches to a rigid network by means of bridging Na+ ion. Moreover, Na3[Ln(DPA)]3 exhibits good thermal stability and luminescent properties, and its optical properties can be remained even after heating at 200 °C more than 3 days. However, when Na+ in Na3[Ln(DPA)3] was replaced with NH4+, i.e., (NH4)3[Ln(DPA)3] with a supramolecular structure based on π-π stacking and other weak interactions, shows relatively poor thermal stability which leads to deterioration of their luminescence properties after heating treatment. This result confirms that the rigid frame structure of Na3[Ln(DPA)]3 plays a crucial role in improving its thermal stability and keeping its highly luminescent quantum efficiency.
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Affiliation(s)
- Qing-Feng Li
- The Key Laboratory of Rare Earth Functional Materials and Applications, Henan Key Laboratory of Rare Earth Functional Materials, Zhoukou Normal University, Zhoukou 466001, Henan, China; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, Henan, China.
| | - Gen-Wu Ge
- The Key Laboratory of Rare Earth Functional Materials and Applications, Henan Key Laboratory of Rare Earth Functional Materials, Zhoukou Normal University, Zhoukou 466001, Henan, China; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, Henan, China
| | - Yanke Sun
- The Key Laboratory of Rare Earth Functional Materials and Applications, Henan Key Laboratory of Rare Earth Functional Materials, Zhoukou Normal University, Zhoukou 466001, Henan, China; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, Henan, China
| | - Mingshen Yu
- The Key Laboratory of Rare Earth Functional Materials and Applications, Henan Key Laboratory of Rare Earth Functional Materials, Zhoukou Normal University, Zhoukou 466001, Henan, China; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, Henan, China
| | - Zhenling Wang
- The Key Laboratory of Rare Earth Functional Materials and Applications, Henan Key Laboratory of Rare Earth Functional Materials, Zhoukou Normal University, Zhoukou 466001, Henan, China; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, Henan, China.
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Rohini G, Haribabu J, Sheeba MM, K. N. A, Bhuvanesh NSP, Balachandran C, Karvembu R, Sreekanth A. Ru(II)-η
6
-benzene Complexes of Dibenzosuberenyl Appended Aroyl/Acylthiourea Ligands: In vitro
Biomolecular Interaction Studies and Catalytic Transfer Hydrogenation. ChemistrySelect 2018. [DOI: 10.1002/slct.201702538] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Gandhaveeti Rohini
- Department of Chemistry; National Institute of Technology; Tiruchirappalli 620015 India, Tel: +91 431 2503642
| | - Jebiti Haribabu
- Department of Chemistry; National Institute of Technology; Tiruchirappalli 620015 India, Tel: +91 431 2503642
| | - Mani M. Sheeba
- Department of Chemistry; National Institute of Technology; Tiruchirappalli 620015 India, Tel: +91 431 2503642
| | - Aneesrahman K. N.
- Department of Chemistry; National Institute of Technology; Tiruchirappalli 620015 India, Tel: +91 431 2503642
| | | | - Chandrasekhar Balachandran
- Division of Natural Drug Discovery; Institute of Natural Medicine; University of Toyama; 2630 Sugitani Toyama 930-0194 Japan
| | - Ramasamy Karvembu
- Department of Chemistry; National Institute of Technology; Tiruchirappalli 620015 India, Tel: +91 431 2503642
| | - Anandaram Sreekanth
- Department of Chemistry; National Institute of Technology; Tiruchirappalli 620015 India, Tel: +91 431 2503642
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16
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Jeyalakshmi K, Haribabu J, Balachandran C, Bhuvanesh NSP, Emi N, Karvembu R. Synthesis of Ru(ii)–benzene complexes containing aroylthiourea ligands, and their binding with biomolecules and in vitro cytotoxicity through apoptosis. NEW J CHEM 2017. [DOI: 10.1039/c6nj03099h] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ru(ii)(η6-benzene) complexes containing sulfur donor monodentate aroylthiourea ligands have been synthesized and evaluated for their biological applications.
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Affiliation(s)
| | - Jebiti Haribabu
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620015
- India
| | | | | | - Nobuhiko Emi
- Department of Hematology
- Fujita Health University
- Toyoake
- Japan
| | - Ramasamy Karvembu
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620015
- India
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17
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Singh K, Singh S, Srivastava P, Sivakumar S, Patra AK. Lanthanoplatins: emissive Eu(iii) and Tb(iii) complexes staining nucleoli targeted through Pt–DNA crosslinking. Chem Commun (Camb) 2017; 53:6144-6147. [DOI: 10.1039/c7cc02047c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Luminescent photostable heterometallic LnPt2 complexes were designed for their preferential nucleoli staining through formation of Pt–DNA cross-links observed through fluorescence microscopy.
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Affiliation(s)
- Khushbu Singh
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Swati Singh
- Department of Chemical Engineering and Centre for Environmental Science and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Payal Srivastava
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Sri Sivakumar
- Department of Chemical Engineering and Centre for Environmental Science and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Ashis K. Patra
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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18
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Dasari S, Singh S, Sivakumar S, Patra AK. Dual-Sensitized Luminescent Europium(ΙΙΙ) and Terbium(ΙΙΙ) Complexes as Bioimaging and Light-Responsive Therapeutic Agents. Chemistry 2016; 22:17387-17396. [DOI: 10.1002/chem.201603453] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Srikanth Dasari
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Swati Singh
- Department of Chemical Engineering and Centre for Environmental Science and Engineering; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Sri Sivakumar
- Department of Chemical Engineering and Centre for Environmental Science and Engineering; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
| | - Ashis K. Patra
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016, Uttar Pradesh India
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19
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Singh K, Srivastava P, Patra AK. Binding interactions with biological targets and DNA photocleavage activity of Pr(III) and Nd(III) complexes of dipyridoquinoxaline. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Dasari S, Abbas Z, Kumar P, Patra AK. Photosensitized samarium(iii) and erbium(iii) complexes of planar N,N-donor heterocyclic bases: crystal structures and evaluation of biological activity. CrystEngComm 2016. [DOI: 10.1039/c5ce02387d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of Sm(iii) and Er(iii) complexes of N,N-donor heterocyclic bases were studied for their crystal structures, luminescence properties, binding with biomolecules and photo-induced DNA damage activity.
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Affiliation(s)
- Srikanth Dasari
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016, India
| | - Zafar Abbas
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016, India
| | - Priyaranjan Kumar
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016, India
| | - Ashis K. Patra
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016, India
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21
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Yao B, Cong Y, Zhang B, Wang Z, Chen F, Sun C. Novel luminescent chiral network liquid-crystalline polymers containing Sm( iii) ions. RSC Adv 2016. [DOI: 10.1039/c6ra07388c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chiral network liquid-crystalline polymers with samarium complexes distributed in spiral matrices can emit soft red light when excited.
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Affiliation(s)
- Bing Yao
- Research Centre for Molecular Science and Engineering
- Northeastern University
- Shenyang
- PR China
| | - Yuehua Cong
- Research Centre for Molecular Science and Engineering
- Northeastern University
- Shenyang
- PR China
| | - Baoyan Zhang
- Research Centre for Molecular Science and Engineering
- Northeastern University
- Shenyang
- PR China
| | - Zeqing Wang
- Research Centre for Molecular Science and Engineering
- Northeastern University
- Shenyang
- PR China
| | - Fei Chen
- Research Centre for Molecular Science and Engineering
- Northeastern University
- Shenyang
- PR China
| | - Cong Sun
- Research Centre for Molecular Science and Engineering
- Northeastern University
- Shenyang
- PR China
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