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Gill AK, Shah S, Yadav P, Shanavas A, Neelakandan PP, Patra D. A visible-light activated ROS generator multilayer film for antibacterial coatings. J Mater Chem B 2022; 10:9869-9877. [PMID: 36437801 DOI: 10.1039/d2tb01454h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The current scenario of antibiotic-resistant bacteria and pandemics caused by viruses makes research in the area of antibacterial and antiviral materials and surfaces more urgent than ever. In this regard, salicylideneimine based tetracoordinate boron-containing organic compounds are emerging as a new class of photosensitizers for singlet oxygen generation. However, the inherent inability of small organic molecules to be processed limits their potential use in functional coatings. Here we show the synthesis of a novel polymer functionalized with diiodosalicylideneimine-boron difluoride (PEI-BF2) and its utility for surface coating inside glass vials via layer-by-layer (LbL) assembly. The multilayer thin films are characterized using AFM and UV-Vis spectroscopy and the resultant coatings display excellent stability. The multilayer coating could be activated using visible light, and owing to the photocatalytic activity of the incorporated PEI-BF2, the surface coating is able to generate singlet oxygen efficiently upon light irradiation. Further, the multilayer coated surfaces exhibit remarkable antimicrobial activity towards both Gram-positive and Gram-negative bacteria under a variety of conditions. Thus, owing to the simple synthesis and the convenient methodology adopted for the preparation of multilayer coatings, the material reported here could pave the way for the development of sunlight activated large area self-sterile surfaces.
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Affiliation(s)
- Arshdeep Kaur Gill
- Institute of Nano Science and Technology, Sector - 81, Mohali - 140306, Punjab, India. .,Centre for Nanoscience and Nanotechnology, Panjab University, Sector-25, Chandigarh - 160036, India
| | - Sanchita Shah
- Institute of Nano Science and Technology, Sector - 81, Mohali - 140306, Punjab, India.
| | - Pranjali Yadav
- Institute of Nano Science and Technology, Sector - 81, Mohali - 140306, Punjab, India.
| | - Asifkhan Shanavas
- Institute of Nano Science and Technology, Sector - 81, Mohali - 140306, Punjab, India.
| | - Prakash P Neelakandan
- Institute of Nano Science and Technology, Sector - 81, Mohali - 140306, Punjab, India.
| | - Debabrata Patra
- Institute of Nano Science and Technology, Sector - 81, Mohali - 140306, Punjab, India.
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2
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Kaundal B, Karmakar S, Roy Choudhury S. Mitochondria-targeting nano therapy altering IDH2-mediated EZH2/EZH1 interaction as precise epigenetic regulation in glioblastoma. Biomater Sci 2022; 10:5301-5317. [PMID: 35917200 DOI: 10.1039/d1bm02006d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glioblastoma (GBM) is a complex brain cancer with frequent relapses and high mortality and still awaits effective treatment. Mitochondria dysfunction is a pathogenic condition in GBM and could be a prime therapeutic target for ceasing GBM progression. Strategies to overcome brain solid tumor barriers and selectively target mitochondria within specific cell types may improve GBM treatment. Here, we present hypericin-conjugated gold nanoparticles (PEG-AuNPs@Hyp) where hypericin is a mitochondrion-targeting agent exhibiting multimodal therapy by critically impacting the IDH2 gene (Isocitrate dehydrogenase) and its interaction with polycomb methyltransferase EZH1/2 for GBM therapy. It significantly localizes in mitochondria by enhanced cellular uptake in the human GBM cell lines/three-dimensional (3D) culture model under red-light exposure. It triggers oxidative stress and changes the mitochondrial potential, with increased Bax/Bcl2 ratio enhancing GBM cell death. The suppressed expression of mutated IDH2 and polycomb group of proteins upon PEG-AuNPs@Hyp/light exposure regulates mitochondria-targeting-mediated GBM metabolism with epigenetic repression of complex machinery function. Polyubiquitination and proteasomal degradation of EZH1 indicate the implication of these polycomb proteins in GBM progression. Chromatin immunoprecipitation reveals the IDH2 and EZH1/EZH2 direct interaction, confirming the role played by IDH2 in modulating the expression of EZH1 and EZH2. In vivo studies further displayed better tumor ablation in a GBM tumor-bearing nude mouse model. The present multimodal nanoformulation compromised the functional dependency of polycomb on mitochondrial IDH2 and established the mechanism of GBM inhibition.
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Affiliation(s)
- Babita Kaundal
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, Punjab-140306, India.
| | - Surajit Karmakar
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, Punjab-140306, India.
| | - Subhasree Roy Choudhury
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, Punjab-140306, India.
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3
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Abstract
Multifunctional stimuli-responsive fluorophores showing bright environment-sensitive emissions have fueled intense research due to their innovative applications in the fields of biotechnologies, optoelectronics, and materials. A strong structural diversity is observed among molecular materials, which has been enriched over the years with a growing responsiveness to stimuli. Boron dipyrromethene (BODIPY) dyes have long been the flagship of emissive boron complexes due to their outstanding properties until a decade ago when analogues based on N^O, N^N, or N^C π-conjugated chelates emerged. The finality of developing borate dyes was to compensate for BODIPYs’ lack of solid-state fluorescence and small Stokes shifts while keeping their excellent optical properties in solution. Among them, the borate complexes based on a salicylaldimine ligand, called by the acronym boranils appear as the most promising, owing to their facile synthesis and dual-state emission properties. Boranil dyes have proven to be good alternatives to BODIPY dyes and have been applied in applications such as bioimaging, bioconjugation, and detection of biosubstrates. Meanwhile, ab initio calculations have rationalized experimental results and provided insightful feedback for future designs. This review article aims at providing a concise yet representative overview of the chemistry around the boranil core with the subsequent applications.
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Shah S, Marandi P, Neelakandan PP. Advances in the Supramolecular Chemistry of Tetracoordinate Boron-Containing Organic Molecules into Organogels and Mesogens. Front Chem 2021; 9:708854. [PMID: 34557473 PMCID: PMC8452935 DOI: 10.3389/fchem.2021.708854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/23/2021] [Indexed: 11/13/2022] Open
Abstract
Boron-containing organic compounds are well accepted as a class of compounds having excellent photophysical properties. In addition to the unique photophysical properties, the ease of synthesis and structural robustness make tetracoordinate boron complexes ideal for a variety of applications. While significant light has been thrown on their luminescence properties, there is no collective attention to their supramolecular chemistry. In this mini review, we discuss the progress made in the supramolecular chemistry of these compounds which includes their utility as building blocks for liquid crystalline materials and gels largely driven by various non-covalent interactions like H-bonding, CH-π interactions, BF-π interactions and Van der Waals forces. The organoboron compounds presented here are prepared from easy-to-synthesize chelating units such as imines, diiminates, ketoiminates and diketonates. Moreover, the presence of heteroatoms such as nitrogen, oxygen and sulfur, and the presence of aromatic rings facilitate non-covalent interactions which not only favor their formation but also helps to stabilize the self-assembled structures.
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Affiliation(s)
- Sanchita Shah
- Energy and Environment Unit, Institute of Nano Science and Technology, Mohali, India
| | - Parvati Marandi
- Energy and Environment Unit, Institute of Nano Science and Technology, Mohali, India
| | - P P Neelakandan
- Energy and Environment Unit, Institute of Nano Science and Technology, Mohali, India
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5
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Marek-Urban PH, Urban M, Wiklińska M, Paplińska K, Woźniak K, Blacha-Grzechnik A, Durka K. Heavy-Atom Free spiro Organoboron Complexes As Triplet Excited States Photosensitizers for Singlet Oxygen Activation. J Org Chem 2021; 86:12714-12722. [PMID: 34469160 PMCID: PMC8453631 DOI: 10.1021/acs.joc.1c01254] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we present a new strategy for the development of efficient heavy-atom free singlet oxygen photosensitizers based on rigid borafluorene scaffolds. Physicochemical properties of borafluorene complexes can be easily tuned through the choice of ligand, thus allowing exploration of numerous organoboron structures as potent 1O2 sensitizers. The singlet oxygen generation quantum yields of studied complexes vary in the range of 0.55-0.78. Theoretical calculations reveal that the introduction of the borafluorene moiety is crucial for the stabilization of a singlet charge transfer state, while intersystem crossing to a local triplet state is facilitated by orthogonal donor-acceptor molecular architecture. Our study shows that quantitative oxidation of selected organic substrates can be achieved in 20-120 min of irradiation with only 0.05 mol % loading of a photocatalyst.
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Affiliation(s)
- Paulina H Marek-Urban
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland.,University of Warsaw, Faculty of Chemistry, Pasteura 1, 02-093 Warsaw, Poland
| | - Mateusz Urban
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Magdalena Wiklińska
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Klaudia Paplińska
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Krzysztof Woźniak
- University of Warsaw, Faculty of Chemistry, Pasteura 1, 02-093 Warsaw, Poland
| | - Agata Blacha-Grzechnik
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Krzysztof Durka
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
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Kilic A, Savci A, Alan Y, Birsen H. Synthesis and spectroscopic properties of 4,4′-bipyridine linker bioactive macrocycle boronate esters: photophysical properties and antimicrobial with antioxidant studies. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121807] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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7
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García-González MC, Navarro-Huerta A, Rodríguez-Muñoz FC, Vera-Alvízar EG, Vera Ramírez MA, Rodríguez-Hernández J, Rodríguez M, Rodríguez-Molina B. The design of dihalogenated TPE monoboronate complexes as mechanofluorochromic crystals. CrystEngComm 2021. [DOI: 10.1039/d1ce00442e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Mechanofluorochromic crystals based on tetraphenylethylene and boronates reversibly change their emission upon grinding, setting the path to develop bistable switches in the future.
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Affiliation(s)
- Ma. Carmen García-González
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior S.N., Coyoacán, Ciudad de México, 04510, Mexico
| | - Armando Navarro-Huerta
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior S.N., Coyoacán, Ciudad de México, 04510, Mexico
| | - Fanny Chantal Rodríguez-Muñoz
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior S.N., Coyoacán, Ciudad de México, 04510, Mexico
| | - Estefanía Guadalupe Vera-Alvízar
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior S.N., Coyoacán, Ciudad de México, 04510, Mexico
| | - Marco A. Vera Ramírez
- Laboratorio de RMN, Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C.P. 09340 Ciudad de México, Mexico
| | - Joelis Rodríguez-Hernández
- Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna Hermosillo No. 140, Saltillo, Coahuila 25294, Mexico
| | - Mario Rodríguez
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, CIO, Apdo., Postal 1-948, 37000 León Gto, Mexico
| | - Braulio Rodríguez-Molina
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior S.N., Coyoacán, Ciudad de México, 04510, Mexico
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8
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Kilic A, Beyazsakal L, Işık M, Türkeş C, Necip A, Takım K, Beydemir Ş. Mannich reaction derived novel boron complexes with amine-bis(phenolate) ligands: Synthesis, spectroscopy and in vitro/in silico biological studies. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121542] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Naim K, Singh M, Sharma S, Nair RV, Venugopalan P, Chandra Sahoo S, Neelakandan PP. Exceptionally Plastic/Elastic Organic Crystals of a Naphthalidenimine-Boron Complex Show Flexible Optical Waveguide Properties. Chemistry 2020; 26:11979-11984. [PMID: 32618379 DOI: 10.1002/chem.202002641] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Indexed: 11/06/2022]
Abstract
The design of molecular compounds that exhibit flexibility is an emerging area of research. Although a fair amount of success has been achieved in the design of plastic or elastic crystals, realizing multidimensional plastic and elastic bending remains challenging. We report herein a naphthalidenimine-boron complex that showed size-dependent dual mechanical bending behavior whereas its parent Schiff base was brittle. Detailed crystallographic and spectroscopic analysis revealed the importance of boron in imparting the interesting mechanical properties. Furthermore, the luminescence of the molecule was turned-on subsequent to boron complexation, thereby allowing it to be explored for multimode optical waveguide applications. Our in-depth study of the size-dependent plastic and elastic bending of the crystals thus provides important insights in molecular engineering and could act as a platform for the development of future smart flexible materials for optoelectronic applications.
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Affiliation(s)
- Khalid Naim
- Institute of Nano Science and Technology (INST), Habitat Centre, Phase 10, Sector 64, Mohali, Punjab, India
| | - Manjeet Singh
- Department of Chemistry, Panjab University (PU), Sector 14, Chandigarh, India
| | - Sachin Sharma
- Laboratory for Nano-scale Optics and Meta-materials (LaNOM), Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab, India
| | - Rajesh V Nair
- Laboratory for Nano-scale Optics and Meta-materials (LaNOM), Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab, India
| | - Paloth Venugopalan
- Department of Chemistry, Panjab University (PU), Sector 14, Chandigarh, India
| | | | - Prakash P Neelakandan
- Institute of Nano Science and Technology (INST), Habitat Centre, Phase 10, Sector 64, Mohali, Punjab, India
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10
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Taguchi J, Matsuura S, Seki T, Ito H. Synthesis and Tunable Optical Properties of C,N-Chelated Borate Luminophores Derived from Potassium Acyltrifluoroborates. Chemistry 2020; 26:2450-2455. [PMID: 31863512 DOI: 10.1002/chem.201904983] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Indexed: 12/12/2022]
Abstract
A new class of borate luminophores has been synthesized by a simple two-step reaction using potassium acyltrifluoroborates (KATs) as starting materials. The hydrazones obtained from reactions between KATs and 2-hydrazinopyridines followed by a cyclization resulted in the unprecedented formation of C,N-chelated six-membered bora-heterocycles. Under consideration of the results of DFT and TD-DFT calculations, four luminophores based on such bora-heterocycles are designed and synthesized, which exhibit a tunable fluorescence range from blue to red in the solid state. Moreover, one of the luminophores exhibits mechanofluorochromism from blue to yellow/green. As a result of the aforementioned mechanochromism of one of these luminophores, white-color emission was achieved by simply mixing the four luminophores.
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Affiliation(s)
- Jumpei Taguchi
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Satsuki Matsuura
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Tomohiro Seki
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
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11
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Marandi P, Kumar PPP, Venugopalan P, Neelakandan PP. Selective Metal‐Ion Detection and Activatable Photosensitization Properties of a Tetraphenylethylene‐Based Salicylideneimine. ChemistrySelect 2019. [DOI: 10.1002/slct.201901035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Parvati Marandi
- Institute of Nano Science and TechnologyHabitat Centre, Phase 10, Sector 64 Mohali 160062 Punjab (India
| | - P. P. Praveen Kumar
- Institute of Nano Science and TechnologyHabitat Centre, Phase 10, Sector 64 Mohali 160062 Punjab (India
| | - Paloth Venugopalan
- Department of ChemistryPanjab University, Sector 14 Chandigarh 160014 India
| | - Prakash P. Neelakandan
- Institute of Nano Science and TechnologyHabitat Centre, Phase 10, Sector 64 Mohali 160062 Punjab (India
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