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Devi LS, Casadidio C, Gigliobianco MR, Di Martino P, Censi R. Multifunctionality of cyclodextrin-based polymeric nanoparticulate delivery systems for chemotherapeutics, combination therapy, and theranostics. Int J Pharm 2024; 654:123976. [PMID: 38452831 DOI: 10.1016/j.ijpharm.2024.123976] [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: 11/03/2023] [Revised: 02/26/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
As cancer being the most difficult disease to treat, different kinds of medications and therapeutic approaches have been prominently developed by scientists. For certain families of drugs, such as immuno-therapeutics or antibody-drug conjugates, efficient delivery systems are required during administration to protect the drugs from chemical degradation or biological inactivation. Delivery systems with the ability to carry different therapeutics or diagnostic agents or both, hold promising potential to tackle the abnormalities behind cancer. In this context, this review provides updated insights on how cyclodextrin-based polymeric nanosystems have become an effective treatment approach against cancer. Cyclodextrins (CDs) are natural oligosaccharides that are famously exploited in pharmaceutical research due to their exceptional quality of entrapping water-insoluble molecules inside their hydrophobic core and providing enhanced solubility with the help of their hydrophilic exterior. Combining the properties of CDs with polymeric nanoparticles (PNPs) brings out excellent versatile and tunable profiles, thanks to the submicron-sized PNPs. By introducing the significance of CD as a delivery system, a collective discussion on different binding approaches and release mechanisms of CD-drug complexation, followed by their characterization studies has been done in this review. Further, in light of recent studies, the article majorly focuses on conveying how promoting CD to a polymeric and nanoscale elevates the multifunctional advantages against cancer that can be successfully applied in combination therapy and theranostics. Moreover, CD-based delivery systems including CALAA-01, CRLX101, and CRLX301, have demonstrated improved tumor targeting, reduced side effects, and prolonged drug release in preclinical studies and clinical trials.
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Affiliation(s)
- Lakshmi Sathi Devi
- School of Pharmacy, Drug Delivery Division, University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, (MC), Italy
| | - Cristina Casadidio
- School of Pharmacy, Drug Delivery Division, University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, (MC), Italy; Department of Pharmaceutical Sciences, Division of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University 99, 3508 TB Utrecht, the Netherlands.
| | - Maria Rosa Gigliobianco
- School of Pharmacy, Drug Delivery Division, University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, (MC), Italy.
| | - Piera Di Martino
- Department of Pharmacy, Università "G. d'Annunzio" di Chieti e Pescara, Via dei Vestini 1, 66100 Chieti, (CH), Italy
| | - Roberta Censi
- School of Pharmacy, Drug Delivery Division, University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, (MC), Italy
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Peng HY, Zhang G, Sun R, Xu YJ, Ge JF. ESIPT-based fluorescent enhanced probes prompted by methylated β-cyclodextrin for the detection of thiophenols. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123012. [PMID: 37329832 DOI: 10.1016/j.saa.2023.123012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/24/2023] [Accepted: 06/10/2023] [Indexed: 06/19/2023]
Abstract
Thiophenol and its derivatives are compounds with high toxicity to organisms and environmental pollution, so it is necessary to detect the level of thiophenols in the environment and biological samples. The probes 1a-b were obtained by introducing the 2,4-dinitrophenyl ether group into diethylcoumarin-salicylaldehyde based compounds. And they can form host-guest compounds with methylated β-cyclodextrin (M-β-CD), the association constants of inclusion complexes are 49.2 M-1, 125 M-1 respectively. The fluorescence intensities of probes 1a-b at 600 nm (1a) and 670 nm (1b) increased significantly in thiophenols detection. Meanwhile, with the addition of M-β-CD, the hydrophobic cavity of M-β-CD significantly increased the fluorescence intensity of probes 1a-b, thus the detection limits of probes 1a-b to thiophenols were reduced from 410 nM, 365 nM to 62 nM, 33 nM respectively. Whereas, the good selectivity and short response time of probes 1a-b towards thiophenols was not affected in the presence of M-β-CD. Moreover, probes 1a-b were used for further water sample detection and HeLa cell imaging experiments due to their good response to thiophenols and the results suggested that probes 1a-b had the potential to detect the content of thiophenols in water samples and living cells.
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Affiliation(s)
- Hai-Yan Peng
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, 199 Ren'Ai Road, Suzhou 215123, China
| | - Gang Zhang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Ru Sun
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, 199 Ren'Ai Road, Suzhou 215123, China.
| | - Yu-Jie Xu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Jian-Feng Ge
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, 199 Ren'Ai Road, Suzhou 215123, China; Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China.
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3
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An electrochemical chiral sensor for amino acids based on cyclodextrin modified thiophene-based copolymer. Carbohydr Polym 2022; 297:120012. [DOI: 10.1016/j.carbpol.2022.120012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/19/2022]
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4
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Rajamohan R, Mohandoss S, Ashokkumar S, Choi EH, Madi F, Leila N, Lee YR. Water-soluble inclusion complexes for a novel anti-viral agent with low toxicity; Oseltamivir with the β-cyclodextrins. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rajamohan R, Mohandoss S, Ashokkumar S, Madi F, Leila N, Murugavel K, Lee YR. A novel and water-soluble material for coronavirus inactivation from oseltamivir in the cavity of methyl and sulfated-β-cyclodextrins through inclusion complexation. J Pharm Biomed Anal 2022; 221:115057. [PMID: 36126612 PMCID: PMC9476363 DOI: 10.1016/j.jpba.2022.115057] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022]
Abstract
A potentially active water-soluble anti-viral with lesser toxic material from the Oseltamivir (OTV) has been produced by the sonication method. The formed material has been further characterized by UV–visible, FT-IR, powder XRD, SEM, TGA/DTA, ROESY, XPS, AFM and etc., The results of DFT calculation have proven that inclusion complexes (ICs) are theoretically and energetically more advantageous models and structures have also been proposed based on the results. Analysis of drug release has been carried out at three pH levels, and it is revealed the analysis is most helpful at acidic pH levels for the ICs with S-CD over H-CD. Over OTV without CDs, OTV:S-CD-ICs exhibited a very less cytotoxic ability on cancer cell lines than ICs with M-CD. ICs enhanced the coronavirus inactivation nature of OTV. This study provides for the first time a full characterization of ICs of OTV with CDs and highlights the impact of complexation on pharmacological activity.
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Affiliation(s)
- Rajaram Rajamohan
- School of Chemical Engineering, Yeungnam University, Gyeongson 38541, Republic of Korea.
| | - Sonaimuthu Mohandoss
- School of Chemical Engineering, Yeungnam University, Gyeongson 38541, Republic of Korea
| | - Sekar Ashokkumar
- PBRC Research center, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Fatiha Madi
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - Neour Leila
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - Kuppusamy Murugavel
- PG and Research Department of Chemistry, Government Arts College, Chidambaram 608102, India
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongson 38541, Republic of Korea.
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Exploring Inclusion Complexes of Amino Acids with -Sulfonatothiacalix[4]arene by Experimental and Computational Approach. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Ferreira L, Campos J, Veiga F, Cardoso C, Cláudia Paiva-Santos A. Cyclodextrin-based delivery systems in parenteral formulations: a critical update review. Eur J Pharm Biopharm 2022; 178:35-52. [PMID: 35868490 DOI: 10.1016/j.ejpb.2022.07.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/28/2022] [Accepted: 07/17/2022] [Indexed: 11/04/2022]
Abstract
Parenteral formulations are indispensable in clinical practice and often are the only option to administer drugs that cannot be administrated through other routes, such as proteins and certain anticancer drugs - which are indispensable to treat some of the most prevailing chronic diseases worldwide (like diabetes and cancer). Additionally, parenteral formulations play a relevant role in emergency care since they are the only ones that provide an immediate action of the drug after its administration. However, the development of parenteral formulations is a complex task owing to the specific quality and safety requirements set for these preparations and the intrinsic properties of the drugs. Amongst all the strategies that can be useful in the development of parenteral formulations, the formation of water-soluble host-guest inclusion complexes with cyclodextrins (CDs) has proven to be one of the most advantageous. CDs are multifunctional pharmaceutical excipients able to form water-soluble host-guest inclusion complexes with a wide variety of molecules, particularly drugs, and thus improve their apparent water-solubility, chemical stability, and bioavailability, to make them suitable for parenteral administration. Besides, CDs can be employed as building blocks of more complex injectable drug delivery systems with enhanced characteristics, such as nanoparticles and supramolecular hydrogels, that has been found particularly beneficial for the delivery of anticancer drugs. However, only a few CDs are considered safe when parenterally administered, and some of these types are already approved to be used in parenteral dosage forms. Therefore, the application of CDs in the development of parenteral formulations has been a more common practice in the last few years, due to their significant worldwide acceptance by the health authorities, promoting the development of safer and more efficient injectable drug delivery systems.
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Affiliation(s)
- Laura Ferreira
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Joana Campos
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Francisco Veiga
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Catarina Cardoso
- Laboratórios Basi, Parque Industrial Manuel Lourenço Ferreira, lote 15, 3450-232 Mortágua, Portugal
| | - Ana Cláudia Paiva-Santos
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal.
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Cid-Samamed A, Rakmai J, Mejuto JC, Simal-Gandara J, Astray G. Cyclodextrins inclusion complex: Preparation methods, analytical techniques and food industry applications. Food Chem 2022; 384:132467. [PMID: 35219231 DOI: 10.1016/j.foodchem.2022.132467] [Citation(s) in RCA: 80] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 02/07/2022] [Accepted: 02/12/2022] [Indexed: 01/19/2023]
Abstract
This review offers a vision of the chemical behaviour of natural ingredients, synthetic drugs and other related compounds complexed using cyclodextrins. The review takes care of different sections related to i) the inclusion complexes formation with cyclodextrins, ii) the determination of the inclusion formation constant, iii) the most used methods to prepare host inclusion in the non-polar cavity of cyclodextrins and iv) the analytical techniques to evidence host inclusion. The review provides different literature that shows the application of cyclodextrins to improve physical, chemical, and biological characteristics of food compounds including solubility, stability and their elimination/masking. Moreover, the review also offers examples of commercial food/supplement products of cyclodextrins to indicate that cyclodextrins can be used to generate biotechnological substances with innovative properties and improve the development of food products.
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Affiliation(s)
- Antonio Cid-Samamed
- Universidade de Vigo, Departamento de Química Física, Facultade de Ciencias, Ourense 32004, España.
| | - Jaruporn Rakmai
- Kasetsart Agricultural and Agro-Industrial Product Improvement Institute (KAPI), Kasetsart University, Bangkok 10900, Thailand.
| | - Juan Carlos Mejuto
- Universidade de Vigo, Departamento de Química Física, Facultade de Ciencias, Ourense 32004, España.
| | - Jesus Simal-Gandara
- Universidade de Vigo, Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Ourense E-32004, Spain.
| | - Gonzalo Astray
- Universidade de Vigo, Departamento de Química Física, Facultade de Ciencias, Ourense 32004, España.
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9
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An extensive investigation on supramolecular assembly of a drug (MEP) with βCD for innovative applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117977] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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10
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Łagiewka J, Girek T, Ciesielski W. Cyclodextrins-Peptides/Proteins Conjugates: Synthesis, Properties and Applications. Polymers (Basel) 2021; 13:1759. [PMID: 34072062 PMCID: PMC8198514 DOI: 10.3390/polym13111759] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/19/2021] [Accepted: 05/25/2021] [Indexed: 12/24/2022] Open
Abstract
Cyclodextrins (CDs) are a family of macrocyclic oligosaccharides mostly composed of six, seven, or eight α-D-glucopyranose units with α-1,4-glycosidic bonds to form toroidal structures. The CDs possess a hydrophilic exterior and hydrophobic interior with the ability to form an inclusion complex, especially with hydrophobic molecules. However, most existing studies are about conjugation CDs with peptide/protein focusing on the formation of new systems. The CD-peptide/protein can possess new abilities; particularly, the cavity can be applied in modulation properties of more complexed proteins. Most studies are focused on drug delivery, such as targeted delivery in cell-penetrating peptides or co-delivery. The co-delivery is based mostly on polylysine systems; on the other hand, the CD-peptide allows us to understand biomolecular mechanisms such as fibryllation or stem cell behaviour. Moreover, the CD-proteins are more complexed systems with a focus on targeted therapy; these conjugates might be controllable with various properties due to changes in their stability. Finally, the studies of CD-peptide/protein are promising in biomedical application and provide new possibilities for the conjugation of simple molecules to biomolecules.
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Affiliation(s)
- Jakub Łagiewka
- Faculty of Mathematics and Natural Science, Jan Dlugosz University in Czestochowa, Armii Krajowej Ave., 13/15, 42 201 Czestochowa, Poland; (T.G.); (W.C.)
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11
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Synthesis and characterization of an industrially significant ionic liquid and its inclusion complex with β-cyclodextrin and its soluble derivative for their advanced applications. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Chakraborty S, Karmakar A, Goswami T, Ghosh P, Mandal A. A combined spectroscopic and molecular dynamic analysis of the inclusion behaviour of l-serine and β-cyclodextrin. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114447] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Alvira E. Molecular Simulation of the Separation of Some Amino Acid Enantiomers by β-Cyclodextrin in Gas-Phase. Front Chem 2020; 8:823. [PMID: 33102440 PMCID: PMC7505776 DOI: 10.3389/fchem.2020.00823] [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: 06/23/2020] [Accepted: 08/04/2020] [Indexed: 11/15/2022] Open
Abstract
The complexes formed by β-cyclodextrin and some amino acids (alanine, valine, leucine, and isoleucine) in vacuo are studied by molecular mechanics and dynamics simulations. These methods have been improved with respect to our previous studies with amino acids, regarding the determination of molecular structures or initial enantiomer dispositions in the molecular dynamics trajectories. The greatest contribution to the interaction energy is from the van der Waals term, although the discrimination between enantiomers is due mainly to the electrostatic contribution. The lowest energy structures of the complexes obtained from molecular mechanics are inclusion complexes in which the carboxylic end of amino acids is pointing toward the narrow (D-) or wide rim (L-) of β-cyclodextrin. The position probability density provided by molecular dynamics also confirms inclusion complex formation, because the guests spend most time inside the cavity of β-cyclodextrin along its axis, with the carboxylic end pointing toward the narrow rim. The L-amino acids are the first eluted enantiomers in all cases and chiral discrimination increases with the size of guests, except leucine, which has the lowest capacity to discriminate. During the simulation, Ala and Val remain in weakly enantioselective regions, while Leu and Ile stay in zones with great chiral selectivity.
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Affiliation(s)
- Elena Alvira
- Departamento de Física, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
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14
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Löwenberg C, Tripodo G, Julich‐Gruner KK, Neffe AT, Lendlein A. Supramolecular Gelatin Networks Based on Inclusion Complexes. Macromol Biosci 2020; 20:e2000221. [DOI: 10.1002/mabi.202000221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/24/2020] [Indexed: 01/30/2023]
Affiliation(s)
- Candy Löwenberg
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies Helmholtz‐Zentrum Geesthacht Teltow 14513 Germany
| | - Giuseppe Tripodo
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies Helmholtz‐Zentrum Geesthacht Teltow 14513 Germany
| | - Konstanze K. Julich‐Gruner
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies Helmholtz‐Zentrum Geesthacht Teltow 14513 Germany
| | - Axel T. Neffe
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies Helmholtz‐Zentrum Geesthacht Teltow 14513 Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies Helmholtz‐Zentrum Geesthacht Teltow 14513 Germany
- Institute of Chemistry University of Potsdam Potsdam 14476 Germany
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15
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Impact of pH and cell medium on the interaction of doxorubicin with lipoic acid cyclodextrin conjugate as the drug carrier. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-00994-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractLipoic acid derivative of cyclodextrin, βCDLip, was used as the drug carrier for doxorubicin (DOX) and the stability constants of the DOX–βCDLip were determined in the environment of the cell medium. The experiments were performed in neutral (pH 7.6) and acidified (pH 6.3) cell media containing more than forty interferences including: amino acids, vitamins, lipids and proteins. We proved that the pH of the medium has a noticeable impact on the affinity of the drug towards the carrier. At neutral pH, the formation constants of the complex are higher than at pH 6.3, what is characteristic for the cancer cells microenvironment. Furthermore, the values obtained in both cell media are twice smaller than the values obtained previously for the same complex but in the absence of common cell media components indicating that there is a competition between DOX and some hydrophobic medium components for the complex formation with βCDLip. On the other hand at pH 7.6, the amount of free DOX is highly limited due to the fact that most of DOX is still in the complexed form, while at pH 6.3 the cell media ingredients become strong interferences in the formation of the complex between DOX and the drug carrier. The observed behaviour is due to partial protonation of DOX and to competition between the drug and the lipoic side arm of cyclodextrin for the cyclodextrin cavity. The stability constants of the DOX–βCDLip complex in acidic pH are similar to the values for DOX with native β-cyclodextrin, demonstrating that the strengthening effect of DOX–CD complex resulting from the presence of cyclodextrin’s aromatic substituent (Lip) occurs only in the case of neutral pH. The high value of the stability constant of the DOX–βCDLip complex in cell medium at pH 7.6 indicates high selectivity of βCDLip ligand which would be of importance both for the effective drug delivery and for its application in DOX sensing devices.
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16
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Tayyab Raza Naqvi S, Rasheed T, Naeem Ashiq M, Najam ul Haq M, Majeed S, Fatima B, Nawaz R, Hussain D, Shafi S. Fabrication of iron modified screen printed carbon electrode for sensing of amino acids. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114426] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Roy A, Saha S, Roy D, Bhattacharyya S, Roy MN. Formation & specification of host–guest inclusion complexes of an anti-malarial drug inside into cyclic oligosaccharides for enhancing bioavailability. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-00984-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Geiselhart CM, Mutlu H, Tzvetkova P, Barner-Kowollik C. Chemiluminescent self-reporting supramolecular transformations on macromolecular scaffolds. Polym Chem 2020. [DOI: 10.1039/d0py00332h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We introduce the synthesis of a self-reporting system with chemiluminescent output, which is regulated via dynamic supramolecular complex formation.
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Affiliation(s)
- Christina M. Geiselhart
- Soft Matter Synthesis Laboratory
- Institut für Biologische Grenzflächen 3
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Hatice Mutlu
- Soft Matter Synthesis Laboratory
- Institut für Biologische Grenzflächen 3
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Pavleta Tzvetkova
- Institute for Organic Chemistry and Institute for Biological Interfaces 4 – Magnetic Resonance
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Christopher Barner-Kowollik
- Macromolecular Architectures
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76128 Karlsruhe
- Germany
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19
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Chakraborty S, Ghosh P, Basu B, Mandal A. Inclusion complex of β-cyclodextrin with tetrabutylammonium bromide: Synthesis, characterization and interaction with calf thymus DNA. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111525] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Das K, Sarkar B, Roy P, Basak C, Chakraborty R, Gardas RL. Physicochemical investigations of amino acid ionic liquid based inclusion complex probed by spectral and molecular docking techniques. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Alvira E. Molecular Simulation of the Separation of Isoleucine Enantiomers by β-Cyclodextrin. Molecules 2019; 24:molecules24061021. [PMID: 30875754 PMCID: PMC6470920 DOI: 10.3390/molecules24061021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/11/2019] [Accepted: 03/11/2019] [Indexed: 11/16/2022] Open
Abstract
Molecular mechanics and dynamics simulations were carried out to study the capacity of isoleucine enantiomers to form inclusion complexes with β⁻cyclodextrin, and to be discriminated by this chiral compound, in vacuo and with different solvents. Solvents were characterized not only by the value of dielectric constant ε in the Coulombic interaction energy, but also by the neutral and zwitterion configurations of isoleucine. Whereas the discrimination between the enantiomers for ε ≤ 2 is due to the electrostatic contribution, these differences are mainly due to the Lennard-Jones potential for ε > 2. The most enantioselective regions are located near the cavity walls, independently of the solvent. D-Ile is more stable than L-Ile in broader regions in vacuo, but L-Ile presents more stable locations with water. Isoleucine can form inclusion complexes with β⁻cyclodextrin in vacuo and with different solvents. Two probable configurations are deduced from the molecular dynamics simulation, in which the guest is always inside the cavity and with the carboxylic end of the amino acid oriented towards either rim of β⁻CD. In the simulation, the enantiomers preferentially occupy regions with greater chiral discrimination. The first eluted enantiomer in vacuo and with different solvents is L-Ile, independently of the solvent polarity.
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Affiliation(s)
- Elena Alvira
- Departamento de Física, Universidad de La Laguna, 38202 La Laguna, Tenerife, Spain.
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22
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Barman BK, Roy K, Roy MN. Probing Inclusion Complexes of Pentoxifylline and Pralidoxim inside Cyclic Oligosaccharides by Physicochemical Methodologies. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2017-1020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Structurally different Molecules namely Pentoxifylline and Pralidoxim were chosen along with α-cyclodextrin and β-cyclodextrin to study host-guest inclusion phenomena. The formations of host guest inclusion complexes were confirmed by studying 1H-NMR spectra, FT-IR spectra, apparent molar volume and viscosity co-efficient. The stabilities of inclusion complexes were compared calculating the binding constant from UV-VIS spectroscopic study. The 1:1 stoichiometry of the inclusion complexes were also determined by analysing the Jobs plot and surface tension data. The values for Gibbs’ free energy were found negative for both the processes. Based on all the above experiments the inclusion processes were found feasible for both the compounds. These types of inclusion complexes are of high interest in the field of research and industry as these are used as drug delivery systems.
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Affiliation(s)
- Biraj Kumar Barman
- Department of Chemistry , University of North Bengal , Darjeeling 734013, India
| | - Kanak Roy
- Department of Chemistry , University of North Bengal , Darjeeling 734013, India
| | - Mahendra Nath Roy
- Department of Chemistry , University of North Bengal , Darjeeling 734013, India
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Study to Probe Subsistence of Host-Guest Inclusion Complexes of α and β-Cyclodextrins with Biologically Potent Drugs for Safety Regulatory Dischargement. Sci Rep 2018; 8:13031. [PMID: 30158645 PMCID: PMC6115366 DOI: 10.1038/s41598-018-31373-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/17/2018] [Indexed: 01/02/2023] Open
Abstract
Host-guest interaction of two significant drugs, phenylephrine hydrochloride and synephrine with α and β-cyclodextrins were studied systematically. Initially two simple but reliable physicochemical techniques namely conductance and surface tension were employed to find out saturation concentration for the inclusion and its stoichiometry. The obtained 1:1 stoichiometry was further confirmed by two spectrometric methods, UV-Vis study and spectrofluorimetry. Significant shifts in IR stretching frequency also support the inclusion process. Relative stabilities of the inclusion complexes were established by the association constants obtained from UV-Vis spectroscopic measurements, program based mathematical calculation of conductivity data. Calculations of the thermodynamic parameters dictates thermodynamic feasibility of the inclusion process. Spectrofluorometric measurement scaffolds the UV-Vis spectroscopic measurement validating stability of the ICs once again. Mass spectroscopic measurement gives the molecular ion peaks corresponding to the inclusion complex of 1:1 molar ratio of host and guest molecules. The mechanism of inclusion was drawn by 1H-NMR and 2D ROESY spectroscopic analysis. Surface texture of the inclusion complexes was studied by SEM. Finally, the cytotoxic activities of the inclusion complexes were analyzed and found, Cell viability also balances for non-toxic behavior of the ICs. Moreover, all the studies reveal the formation of inclusion complexes of two ephedra free, alternatively emerging drugs (after their banned product having ephedra) SNP, PEH with α and β-CD which enriches the drug delivery system with their regulatory release without any chemical modification.
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Chen Y, Zuo Z, Dai X, Xiao P, Fang X, Wang X, Wang W, Ding CF. Gas-phase complexation of α-/β-cyclodextrin with amino acids studied by ion mobility-mass spectrometry and molecular dynamics simulations. Talanta 2018; 186:1-7. [DOI: 10.1016/j.talanta.2018.04.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/28/2018] [Accepted: 04/01/2018] [Indexed: 01/11/2023]
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25
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Barman BK, Barman S, Roy MN. Inclusion complexation between tetrabutylphosphonium methanesulfonate as guest and α- and β-cyclodextrin as hosts investigated by physicochemical methodology. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.04.148] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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26
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Barman BK, Dutta A, Roy MN. Sustenance of Inclusion Complexes of Ionic Liquid with Cyclic Oligosaccharide Molecules in Liquid and Solid Phases by Diverse Approaches. ChemistrySelect 2018. [DOI: 10.1002/slct.201801102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Biraj K Barman
- Department of ChemistryUniversity of North Bengal Darjeeling-734013
| | - Ashutosh Dutta
- Department of ChemistryUniversity of North Bengal Darjeeling-734013
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27
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Synthesis,characterization of 1-butyl-4-methylpyridinium lauryl sulfate and its inclusion phenomenon with β-cyclodextrin for enhanced applications. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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28
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Son EB, Poo KM, Mohamed HO, Choi YJ, Cho WC, Chae KJ. A novel approach to developing a reusable marine macro-algae adsorbent with chitosan and ferric oxide for simultaneous efficient heavy metal removal and easy magnetic separation. BIORESOURCE TECHNOLOGY 2018; 259:381-387. [PMID: 29579690 DOI: 10.1016/j.biortech.2018.03.077] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 03/13/2018] [Accepted: 03/15/2018] [Indexed: 06/08/2023]
Abstract
Chitosan modified magnetic kelp biochar (Chi-KBm) was successfully synthesized for efficient removal of heavy metals (Cu2+) from wastewater. Interestingly, the characterization results indicated that Chi-KBm showed 6 times higher surface area (6.17 m2/g) than the pristine magnetic kelp biochar KBm (0.97 m2/g). In addition, new functional groups, such as NH and CN group, have been created on the surface of biochar as a result of chitosan modification process, which in turns led to improve the Cu2+ adsorption capacity. The effect of pH and chitosan loading on heavy metal adsorption, and competition reaction of different metal ions adsorption were also investigated. Chi-KBm exhibited a separation efficiency of more than 99.8%, which allows to recovery and reusability of the adsorbent material and heavy metals simultaneously. Overall, this study highlighted the Chi-KBm is a promise adsorbent for heavy metal removal without sacrificing of the separation ability using magnetism.
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Affiliation(s)
- Eun-Bi Son
- Department of Environmental Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea
| | - Kyung-Min Poo
- Department of Environmental Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea
| | - Hend Omar Mohamed
- Department of Environmental Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea
| | - Yun-Jeong Choi
- Department of Environmental Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea
| | - Wan-Cheol Cho
- Department of Environmental Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea
| | - Kyu-Jung Chae
- Department of Environmental Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea.
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29
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Inclusion complexes of pantoprazole with β-cyclodextrin and cucurbit[7]uril: experimental and molecular modeling study. J INCL PHENOM MACRO 2018. [DOI: 10.1007/s10847-018-0814-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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30
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Barman BK, Rajbanshi B, Yasmin A, Roy MN. Exploring inclusion complexes of ionic liquids with α- and β- cyclodextrin by NMR, IR, mass, density, viscosity, surface tension and conductance study. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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31
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Preparation, characterization and binding behaviors of host-guest inclusion complexes of metoclopramide hydrochloride with α- and β-cyclodextrin molecules. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.11.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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32
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Das K, Datta B, Rajbanshi B, Roy MN. Evidences for Inclusion and Encapsulation of an Ionic liquid with β-CD and 18-C-6 in Aqueous Environments by Physicochemical Investigation. J Phys Chem B 2018; 122:1679-1694. [PMID: 29314847 DOI: 10.1021/acs.jpcb.7b11274] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koyeli Das
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Biswajit Datta
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Biplab Rajbanshi
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
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Banjare MK, Behera K, Satnami ML, Pandey S, Ghosh KK. Host–guest complexation of ionic liquid with α- and β-cyclodextrins: a comparative study by 1H-NMR, 13C-NMR and COSY. NEW J CHEM 2018. [DOI: 10.1039/c8nj01840e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The inclusion complexation of 1-butyl-3-methylimidazolium octylsulphate [Bmim][OS] with host α- and β-cyclodextrins (CDs) has been explored by 1H NMR, 13C NMR and COSY methods. The insertion of a guest molecule into the cavity of CD is clearly reflected by changes in 1H-NMR and 13C-NMR chemical shift values and COSY NMR suggest that both H-bonding and electrostatic interactions involved to the complexation.
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Affiliation(s)
- Manoj Kumar Banjare
- School of Studies in Chemistry
- Pt. Ravishankar Shukla University
- Raipur (C.G.)
- India
| | | | - Manmohan L. Satnami
- School of Studies in Chemistry
- Pt. Ravishankar Shukla University
- Raipur (C.G.)
- India
| | - Siddharth Pandey
- Department of Chemistry
- Indian Institute of Technology Delhi
- India
| | - Kallol K. Ghosh
- School of Studies in Chemistry
- Pt. Ravishankar Shukla University
- Raipur (C.G.)
- India
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34
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Saha S, Roy A, Roy MN. Mechanistic Investigation of Inclusion Complexes of a Sulfa Drug with α- and β-Cyclodextrins. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02619] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Subhadeep Saha
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India
| | - Aditi Roy
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India
| | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India
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Alvira E. Influence of solvent polarity on the separation of leucine enantiomers by β-cyclodextrin: a molecular mechanics and dynamics simulation. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.09.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Exploration of inclusion complexes of probenecid with α and β-cyclodextrins: Enhancing the utility of the drug. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.05.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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37
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Li X, Li X, Zheng H, Ma J, Xu G, Jia Q. Design of a ruthenium(III) immobilized affinity material based on a β-cyclodextrin-functionalized poly(glycidyl methacrylate-ethylene dimethacrylate) monolith for the enrichment of hippuric acid. J Sep Sci 2017; 40:3696-3702. [PMID: 28707740 DOI: 10.1002/jssc.201700436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/26/2017] [Accepted: 07/01/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Xuemei Li
- College of Chemistry; Jilin University; Changchun China
| | - Xiqian Li
- China-Japan Union Hospital of Jilin University; Changchun China
| | - Haijiao Zheng
- College of Chemistry; Jilin University; Changchun China
| | - Jiutong Ma
- College of Chemistry; Jilin University; Changchun China
| | - Guoxing Xu
- School of Pharmaceutical Sciences; Jilin University; Changchun China
| | - Qiong Jia
- College of Chemistry; Jilin University; Changchun China
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38
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Kundu M, Roy MN. Subsistence of inclusion complex via assembly of a drug into cyclic oligosaccharide: Its formation, mechanism, behaviour and importance. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:332-338. [PMID: 28458238 DOI: 10.1016/j.saa.2017.04.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/30/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
The aim of this present work is to make soluble DEPM in aqueous medium through the formation inclusion complex into the hydrophobic hollow space of β-cyclodextrin (β-Cyd) which will provide a novel approach for designing drug delivery system in aqueous medium. The study of supramolecular complexation of DEPM with β-Cyd has been designed in both solution and solid state. In solution phase the evidences of the presence of non-covalent interactions in inclusion complex with 1:1 stoichiometry behaviour are obtained by investigating the UV-spectroscopy. The resultant solid of DEPM and β-Cyd is established by 1H NMR, FTIR, powder XRD and SEM techniques. So, β-Cyd has the ability to encapsulate DEPM into their core without formation any covalent bonds and also increases the bioavailability of the water insoluble DEPM drug.
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Affiliation(s)
- Mitali Kundu
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
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39
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Evidences for complexations of β-cyclodextrin with some amino acids by 1 H NMR, surface tension, volumetric investigations and XRD. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.123] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Abstract
Abstract
Assembly of pyridine-2-aldoxime drug with cucurbit [6]uril (CB[6]) has been investigated by 1H-NMR and 2D-ROESY NMR, UV-Vis spectroscopy, FT-IR spectroscopy, surface tension and conductivity measurements in aqueous saline environment. The distinct cationic receptor feature and the cavity dimension of the CB[6] emphasize that the macro-cyclic host molecule remain as complex with the nerve stimulus drug molecule. The results obtained from surface tension and specific conductivity measurements suggest 1:1 inclusion complex formation between drug and CB[6]. The stability constant evaluated by UV-Vis spectroscopic approach is 2.21×105 M−1 at 298.15 K, which indicates that the complex is sufficiently stable at physiological temperature.
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41
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Roy A, Roy MN. Cage to cage study of ionic liquid and cyclic oligosaccharides to form inclusion complexes. RSC Adv 2017. [DOI: 10.1039/c7ra08397a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Encapsulation of trihexyltetradecylphosphonium chloride inside α and β-cyclodextrins in both aqueous solution and solid state with 1 : 1 stoichiometry.
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Affiliation(s)
- Aditi Roy
- Department of Chemistry
- University of North Bengal
- India
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42
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Study to explore the mechanism to form inclusion complexes of β-cyclodextrin with vitamin molecules. Sci Rep 2016; 6:35764. [PMID: 27762346 PMCID: PMC5071908 DOI: 10.1038/srep35764] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 10/05/2016] [Indexed: 12/12/2022] Open
Abstract
Host–guest inclusion complexes of β-cyclodextrin with two vitamins viz., nicotinic acid and ascorbic acid in aqueous medium have been explored by reliable spectroscopic, physicochemical and calorimetric methods as stabilizer, carrier and regulatory releaser of the guest molecules. Job’s plots have been drawn by UV-visible spectroscopy to confirm the 1:1 stoichiometry of the host-guest assembly. Stereo-chemical nature of the inclusion complexes has been explained by 2D NMR spectroscopy. Surface tension and conductivity studies further support the inclusion process. Association constants for the vitamin-β-CD inclusion complexes have been calculated by UV-visible spectroscopy using both Benesi–Hildebrand method and non-linear programme, while the thermodynamic parameters have been estimated with the help of van’t Hoff equation. Isothermal titration calorimetric studies have been performed to determine the stoichiometry, association constant and thermodynamic parameters with high accuracy. The outcomes reveal that there is a drop in ΔSo, which is overcome by higher negative value of ΔHo, making the overall inclusion process thermodynamically favorable. The association constant is found to be higher for ascorbic acid than that for nicotinic acid, which has been explained on the basis of their molecular structures.
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Roy A, Saha S, Datta B, Roy MN. Insertion behavior of imidazolium and pyrrolidinium based ionic liquids into α and β-cyclodextrins: mechanism and factors leading to host–guest inclusion complexes. RSC Adv 2016. [DOI: 10.1039/c6ra19684e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The encapsulation of [BMIm]Cl and [BMP]Cl within α and β-cyclodextrin in both the solid state and aqueous solution with 1 : 1 supramolecular assembly.
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Affiliation(s)
- Aditi Roy
- Department of Chemistry
- University of North Bengal
- Darjeeling – 734013
- India
| | - Subhadeep Saha
- Department of Chemistry
- University of North Bengal
- Darjeeling – 734013
- India
| | - Biswajit Datta
- Department of Chemistry
- University of North Bengal
- Darjeeling – 734013
- India
| | - Mahendra Nath Roy
- Department of Chemistry
- University of North Bengal
- Darjeeling – 734013
- India
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