1
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Rivero-Barbarroja G, Carmen Padilla-Pérez M, Maisonneuve S, Isabel García-Moreno M, Tiet B, Vocadlo DJ, Xie J, García Fernández JM, Ortiz Mellet C. sp 2-Iminosugar azobenzene O-glycosides: Light-sensitive glycosidase inhibitors with unprecedented tunability and switching factors. Bioorg Chem 2024; 150:107555. [PMID: 38885548 DOI: 10.1016/j.bioorg.2024.107555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/20/2024]
Abstract
The conventional approach to developing light-sensitive glycosidase activity regulators, involving the combination of a glycomimetic moiety and a photoactive azobenzene module, results in conjugates with differences in glycosidase inhibitory activity between the interchangeable E and Z-isomers at the azo group that are generally below one-order of magnitude. In this study, we have exploited the chemical mimic character of sp2-iminosugars to access photoswitchable p- and o-azobenzene α-O-glycosides based on the gluco-configured representative ONJ. Notably, we achieved remarkably high switching factors for glycosidase inhibition, favoring either the E- or Z-isomer depending on the aglycone structure. Our data also indicate a correlation between the isomeric state of the azobenzene module and the selectivity towards α- and β-glucosidase isoenzymes. The most effective derivative reached over a 103-fold higher inhibitory potency towards human β-glucocerebrosidase in the Z as compared with the E isomeric form. This sharp contrast is compatible with ex-vivo activation and programmed self-deactivation at physiological temperatures, positioning it as a prime candidate for pharmacological chaperone therapy in Gaucher disease. Additionally, our results illustrate that chemical tailoring enables the engineering of photocommutators with the ability to toggle inhibition between α- and β-glucosidase enzymes in a reversible manner, thus expanding the versatility and potential therapeutic applications of this approach.
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Affiliation(s)
- Gonzalo Rivero-Barbarroja
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, c/ Profesor García González 1, 41012 Sevilla, Spain
| | - M Carmen Padilla-Pérez
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, c/ Profesor García González 1, 41012 Sevilla, Spain
| | - Stéphane Maisonneuve
- ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, Université Paris-Saclay, Gif-sur-Yvette 91190, France
| | - M Isabel García-Moreno
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, c/ Profesor García González 1, 41012 Sevilla, Spain
| | - Ben Tiet
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - David J Vocadlo
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada; Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Juan Xie
- ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, Université Paris-Saclay, Gif-sur-Yvette 91190, France.
| | - José M García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Carmen Ortiz Mellet
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, c/ Profesor García González 1, 41012 Sevilla, Spain.
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2
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Wang Z, Maisonneuve S, Xie J. One-Pot Synthesis of Water-Soluble Glycosyl Azobenzenes and Their Photoswitching Properties in Water. J Org Chem 2022; 87:16165-16174. [PMID: 36445318 DOI: 10.1021/acs.joc.2c01511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular photoswitches capable of reversible photoswitching in aqueous media are highly demanded for various biological applications and photopharmacology. Carbohydrates, as natural and abundant raw materials, provide opportunity to make photoswitches water-soluble through linking sugar to the photoswitching molecules. We have developed a one-pot synthesis method to prepare water-soluble glycosyl azobenzenes through DMC (2-chloro-1,3-dimethylimidazolinium chloride)-mediated glycosylation between sugar and dihydroxyazobenzenes (DHABs) in aqueous media. The scope of the method has been investigated with different mono- and disaccharides, as well as with p,p'- and o,o'-DHAB, with excellent 1,2-trans stereoselectivity. Diglycosylation products can also be obtained with an excess amount of monosaccharides in one step. We have also demonstrated the possibility of further functionalization on the azobenzene moiety of glycosyl azobenzene. Both mono- and diglycosyl azobenzenes showed excellent photoswitching properties in water with high fatigue resistance and good thermostability for the Z-isomers. Excellent E → Z photoisomerization of both mono- and diglycosylated azobenzenes (Z/E = 99/1) is observed under illumination at 365 nm, while back Z → E photoisomerization can be achieved with blue light (with E/Z = 80/20 at PSS485 for the diglycosyl derivative).
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Affiliation(s)
- Zhaoxin Wang
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190 Gif-sur-Yvette, France
| | - Stéphane Maisonneuve
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190 Gif-sur-Yvette, France
| | - Juan Xie
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190 Gif-sur-Yvette, France
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3
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Volarić J, Buter J, Schulte AM, van den Berg KO, Santamaría-Aranda E, Szymanski W, Feringa BL. Design and Synthesis of Visible-Light-Responsive Azobenzene Building Blocks for Chemical Biology. J Org Chem 2022; 87:14319-14333. [PMID: 36285612 PMCID: PMC9639001 DOI: 10.1021/acs.joc.2c01777] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tetra-ortho-fluoro-azobenzenes are a class of photoswitches useful for the construction of visible-light-controlled molecular systems. They can be used to achieve spatio-temporal control over the properties of a chosen bioactive molecule. However, the introduction of different substituents to the tetra-fluoro-azobenzene core can significantly affect the photochemical properties of the switch and compromise biocompatibility. Herein, we explored the effect of useful substituents, such as functionalization points, attachment handles, and water-solubilizing groups, on the photochemical properties of this photochromic system. In general, all the tested fluorinated azobenzenes exhibited favorable photochemical properties, such as high photostationary state distribution and long half-lives, both in organic solvents and in water. One of the azobenzene building blocks was functionalized with a trehalose group to enable the uptake of the photoswitch into mycobacteria. Following metabolic uptake and incorporation of the trehalose-based azobenzene in the mycobacterial cell wall, we demonstrated photoswitching of the azobenzene in the isolated total lipid extract.
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Affiliation(s)
- Jana Volarić
- Stratingh
Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Jeffrey Buter
- Stratingh
Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Albert M. Schulte
- Stratingh
Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands
| | | | - Eduardo Santamaría-Aranda
- Stratingh
Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands,Departamento
de Química, Universidad de la Rioja, Centro de investigación en Síntesis Química, Madre de Dios 53, 26006 Logroño, Spain
| | - Wiktor Szymanski
- Stratingh
Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands,Department
of Radiology, Medical Imaging, Center, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands,
| | - Ben L. Feringa
- Stratingh
Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands,
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4
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Davighi MG, Clemente F, Matassini C, Cardona F, Nielsen MB, Goti A, Morrone A, Paoli P, Cacciarini M. Photoswitchable inhibitors of human β-glucocerebrosidase. Org Biomol Chem 2022; 20:1637-1641. [PMID: 35107482 DOI: 10.1039/d1ob02159a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Light-switchable inhibitors of the enzyme β-glucocerebrosidase (GCase) have been developed by anchoring a specific azasugar to a dihydroazulene or an azobenzene responsive moiety. Their inhibitory effect towards human GCase, before and after irradiation are reported, and the effect on thermal denaturation of recombinant GCase and cytotoxicity were studied on selected candidates.
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Affiliation(s)
- Maria Giulia Davighi
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
| | - Francesca Clemente
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
| | - Camilla Matassini
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
| | - Francesca Cardona
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy. .,Associated with LENS, via N. Carrara 1, 50019 Sesto F.no (FI), Italy
| | - Mogens Brøndsted Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Andrea Goti
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy. .,Associated with LENS, via N. Carrara 1, 50019 Sesto F.no (FI), Italy
| | - Amelia Morrone
- Paediatric Neurology Unit and Laboratories, Neuroscience Department, Meyer Children's Hospital, and Department of Neurosciences, Pharmacology and Child Health. University of Florence, Viale Pieraccini 24, 50139 Firenze, Italy
| | - Paolo Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134 Firenze, Italy
| | - Martina Cacciarini
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
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5
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Solvent-controlled synthesis of bulky and polar-bulky galactonoamidines. Carbohydr Res 2022; 513:108520. [DOI: 10.1016/j.carres.2022.108520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 11/15/2022]
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6
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Fu J, Nguyen K. Reduction of Promiscuous Peptides-Enzyme Inhibition and Aggregation by Negatively Charged Biopolymers. ACS APPLIED BIO MATERIALS 2022; 5:1839-1845. [PMID: 34995072 DOI: 10.1021/acsabm.1c01128] [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] [Indexed: 11/29/2022]
Abstract
In this work, peptides selected from a microarray were found to inhibit β-gal with promiscuous mechanisms. Peptides inhibited the enzyme in a noncompetitive kinetics, and the inhibition of enzyme activities was reduced under high enzyme concentrations and the addition of detergent. Dynamic light scattering and atomic force microscope revealed that peptide/enzyme aggregation was related to inhibited enzyme activities. Positively charged residues of arginine and lysine were critical for the enzyme inhibition. The preincubation of peptide inhibitors with negatively charged biopolymers of polyphosphates, ssDNA, and low pI peptides could increase the residual activity of peptide-inhibited enzyme, possibly due to the disruption of the electrostatic interaction between positively charged peptide residues and the β-gal surface. Further, negative biopolymers were able to recover the activity of the aggregated peptide/β-gal complex. Negatively charged biopolymers could be used in high-throughput screening assays to reduce peptides/protein aggregation and thereby minimize promiscuous inhibitions.
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Affiliation(s)
- Jinglin Fu
- Department of Chemistry, Rutgers University-Camden, Camden, New Jersey 08102, United States.,Center for Computational and Integrative Biology, Rutgers University-Camden, Camden, New Jersey 08103, United States
| | - Kaitlyn Nguyen
- Department of Chemistry, Rutgers University-Camden, Camden, New Jersey 08102, United States
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7
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Dada L, Manzano VE, Varela O. Benzyl Glycosides of Thiodisaccharides. Influence of C‐2 Configuration of the Reducing End and Substitution at Benzyl on the Inhibition of the
E. coli
β‐Galactosidase. ChemistrySelect 2021. [DOI: 10.1002/slct.202103461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lucas Dada
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Orgánica. Ciudad Universitaria, Pabellón 2 C1428EHA Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| | - Verónica E. Manzano
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Orgánica. Ciudad Universitaria, Pabellón 2 C1428EHA Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| | - Oscar Varela
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Orgánica. Ciudad Universitaria, Pabellón 2 C1428EHA Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
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8
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Volarić J, Szymanski W, Simeth NA, Feringa BL. Molecular photoswitches in aqueous environments. Chem Soc Rev 2021; 50:12377-12449. [PMID: 34590636 PMCID: PMC8591629 DOI: 10.1039/d0cs00547a] [Citation(s) in RCA: 132] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 12/17/2022]
Abstract
Molecular photoswitches enable dynamic control of processes with high spatiotemporal precision, using light as external stimulus, and hence are ideal tools for different research areas spanning from chemical biology to smart materials. Photoswitches are typically organic molecules that feature extended aromatic systems to make them responsive to (visible) light. However, this renders them inherently lipophilic, while water-solubility is of crucial importance to apply photoswitchable organic molecules in biological systems, like in the rapidly emerging field of photopharmacology. Several strategies for solubilizing organic molecules in water are known, but there are not yet clear rules for applying them to photoswitchable molecules. Importantly, rendering photoswitches water-soluble has a serious impact on both their photophysical and biological properties, which must be taken into consideration when designing new systems. Altogether, these aspects pose considerable challenges for successfully applying molecular photoswitches in aqueous systems, and in particular in biologically relevant media. In this review, we focus on fully water-soluble photoswitches, such as those used in biological environments, in both in vitro and in vivo studies. We discuss the design principles and prospects for water-soluble photoswitches to inspire and enable their future applications.
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Affiliation(s)
- Jana Volarić
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
| | - Wiktor Szymanski
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
- Department of Radiology, Medical Imaging Center, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Nadja A Simeth
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
- Institute for Organic and Biomolecular Chemistry, University of Göttingen, Tammannstr. 2, 37077 Göttingen, Germany
| | - Ben L Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
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9
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Sarkar S, Sarkar P, Ghosh P. Heteroditopic Macrobicyclic Molecular Vessels for Single Step Aerial Oxidative Transformation of Primary Alcohol Appended Cross Azobenzenes. J Org Chem 2021; 86:6648-6664. [PMID: 33908241 DOI: 10.1021/acs.joc.1c00409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of oxy-ether tris-amino heteroditopic macrobicycles (L1-L4) with various cavity dimensions have been synthesized and explored for their Cu(II) catalyzed selective single step aerial oxidative cross-coupling of primary alcohol based anilines with several aromatic amines toward the formation of primary alcohol appended cross azobenzenes (POCABs). The beauty of this transformation is that the easily oxidizable benzyl/primary alcohol group remains unhampered during the course of this oxidation due to the protective oxy-ether pocket of this series of macrobicyclic vessels. Various dimensionalities of the molecular vessels have shown specific size complementary selection for substrates toward efficient syntheses of regioselective POCAB products. To establish the requirement of the three-dimensional cavity based additives, a particular catalytic reaction has been examined in the presence of macrobicycles (L2 and L3) versus macrocycles (MC1 and MC2) and tripodal acyclic (AC1 and AC2) analogous components, respectively. Subsequently, L1-L4 have been extensively utilized toward the syntheses of as many as 44 POCABs and are characterized by different spectroscopic techniques and single crystal X-ray diffraction studies.
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Affiliation(s)
- Sayan Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Piyali Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Pradyut Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
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10
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Saha M, Hossain MS, Bandyopadhyay S. A Photoregulated Racemase Mimic. Angew Chem Int Ed Engl 2021; 60:5220-5224. [PMID: 33180335 DOI: 10.1002/anie.202012124] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/11/2020] [Indexed: 01/03/2023]
Abstract
The racemase enzymes convert L-amino acids to their D-isomer. The reaction proceeds through a stepwise deprotonation-reprotonation mechanism that is assisted by a pyridoxal phosphate (PLP) coenzyme. This work reports a PLP-photoswitch-imidazole triad where the racemization reaction can be controlled by light by tweaking the distance between the basic residue and the reaction centre.
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Affiliation(s)
- Monochura Saha
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
| | - Munshi Sahid Hossain
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
| | - Subhajit Bandyopadhyay
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
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11
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Affiliation(s)
- Monochura Saha
- Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur, Nadia West Bengal 741246 India
| | - Munshi Sahid Hossain
- Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur, Nadia West Bengal 741246 India
| | - Subhajit Bandyopadhyay
- Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur, Nadia West Bengal 741246 India
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12
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Saha M, Chatterjee S, Hossain MS, Ghude A, Bandyopadhyay S. Modulation of Electronic Mobility of a One-Dimensional Coordination Polymeric Molecular Wire with Light. Chem Asian J 2019; 14:4659-4664. [PMID: 31392843 DOI: 10.1002/asia.201900956] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/04/2019] [Indexed: 11/09/2022]
Abstract
Metal ions often influence the photoswitching efficiency of a photochromic system. This article reports a one-dimensional polymer having cyclic azobenzenes coordinated to silver ions that are bridged by nitrates. The coordination polymer (CP-2) displays a photoresponsive behavior. The switching ability in the polymer form was faster compared to the parent azobenzene ligand without the metal ions. Azobenzenes are reported to be poorly conducting. Here, although the azobenzene ligand does not show significant electronic mobility, the coordination polymer (CP-2) displays a modest conductivity. The conductance in the cis form of the polymer is significantly higher compared to the trans form. Upon exposure to visible light, the cis form undergoes photoisomerization to the trans form with a drastic drop in the electronic mobility. The trans form can be reverted to the cis form thermally or by using UV light. Thus, this system offers a reversible control of the conductivity using light.
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Affiliation(s)
- Monochura Saha
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, 741246, India
| | - Sheelbhadra Chatterjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, 741246, India
| | - Munshi Sahid Hossain
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, 741246, India
| | - Arijeet Ghude
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, 741246, India
| | - Subhajit Bandyopadhyay
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, 741246, India
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13
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Saha M, Bandyopadhyay S. Reversible photoresponsive activity of a carbonic anhydrase mimic. Chem Commun (Camb) 2019; 55:3294-3297. [PMID: 30810568 DOI: 10.1039/c9cc00018f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The carbonic anhydrase (CA) enzyme reversibly transforms carbon dioxide and water to a carbonate ion and a proton. Photoresponsive enzyme mimics, where the CA-activity can be turned on and off reversibly with light, have not been reported so far. We have designed an active site mimic that offers reversible control of the catalytic activity using light. Moreover, in the presence of a cationic polymer, we have demonstrated that the CA-activity was further enhanced by stabilizing the transition state with the cis-form of the enzyme mimic which can catalyze the hydration of gaseous CO2.
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Affiliation(s)
- Monochura Saha
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, Nadia, 741246, India.
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