1
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Anaerobic Membrane Bioreactor (AnMBR) for the Removal of Dyes from Water and Wastewater: Progress, Challenges, and Future Perspectives. Processes (Basel) 2023. [DOI: 10.3390/pr11030855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
The presence of dyes in aquatic environments can have harmful effects on aquatic life, including inhibiting photosynthesis, decreasing dissolved oxygen levels, and altering the behavior and reproductive patterns of aquatic organisms. In the initial phase of this review study, our aim was to examine the categories and properties of dyes as well as the impact of their toxicity on aquatic environments. Azo, phthalocyanine, and xanthene are among the most frequently utilized dyes, almost 70–80% of used dyes, in industrial processes and have been identified as some of the most commonly occurring dyes in water bodies. Apart from that, the toxicity effects of dyes on aquatic ecosystems were discussed. Toxicity testing relies heavily on two key measures: the LC50 (half-lethal concentration) and EC50 (half-maximal effective concentration). In a recent study, microalgae exposed to Congo Red displayed a minimum EC50 of 4.8 mg/L, while fish exposed to Disperse Yellow 7 exhibited a minimum LC50 of 0.01 mg/L. Anaerobic membrane bioreactors (AnMBRs) are a promising method for removing dyes from water bodies. In the second stage of the study, the effectiveness of different AnMBRs in removing dyes was evaluated. Hybrid AnMBRs and AnMBRs with innovative designs have shown the capacity to eliminate dyes completely, reaching up to 100%. Proteobacteria, Firmicutes, and Bacteroidetes were found to be the dominant bacterial phyla in AnMBRs applied for dye treatment. However, fouling has been identified as a significant drawback of AnMBRs, and innovative designs and techniques are required to address this issue in the future.
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2
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Unraveling pH-responsive contrasting supramolecular interaction of acridine orange with γ-Cyclodextrin. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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3
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Alexander A, Pillai AS, Nallamuthu A, Pal H, Enoch IVMV, Sayed M. G-Quadruplex selectivity and cytotoxicity of a guanidine-encapsulated porphyrin-cyclodextrin conjugate. Int J Biol Macromol 2022; 218:839-855. [PMID: 35905761 DOI: 10.1016/j.ijbiomac.2022.07.170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/07/2022] [Accepted: 07/21/2022] [Indexed: 11/19/2022]
Abstract
G-Quadruplex DNAs represent out-of-the-way nucleic acid conformations, frequently formed by guanine-rich sequences. They have emanated as cancer-associated targets for designed small molecules. The variation in the binding affinity of the synthesized compounds to duplex and quadruplex structures is an intriguing quest, solved by spectroscopic analysis. In this paper, we report the synthesis of a porphyrin-cyclodextrin conjugate, characterized by utilizing FT-IR, NMR, and mass spectrometry. Further, two benzimidazolylguanidines are synthesized which form host: guest complexes with the porphyrin-cyclodextrin conjugate. The structure of the complexes is optimized by analyzing their 2D ROESY spectra. The interactions of the host, guest, and the host: guest complexes with the duplex (calf thymus DNA) and quadruplex (kit22) nucleic acids are investigated employing UV-vis, fluorescence, circular dichroism, and DNA melting experiments. The calculated strengths of the compounds' binding with kit22 are in the order of 106, which is larger than those observed for the duplex DNA binding. The significant G-quadruplex selectivity of the host: guest complex of anthracenyl-benzimidazolylguanidine is discussed in detail. Further, the in vitro cytotoxicity of the compounds on MCF-7 cell lines is examined. The host: guest complexes show enhanced half-maximal inhibitory concentration values compared to the un-complexed compounds.
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Affiliation(s)
- Aleyamma Alexander
- Centre for Nanoscience and Genomics, Karunya Institute of Technology and Sciences (Deemed University), Coimbatore 641114, Tamil Nadu, India
| | - Archana Sumohan Pillai
- Centre for Nanoscience and Genomics, Karunya Institute of Technology and Sciences (Deemed University), Coimbatore 641114, Tamil Nadu, India
| | - Ananthi Nallamuthu
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed University), Coimbatore 641114, Tamil Nadu, India
| | - Haridas Pal
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 00085, India
| | - Israel V M V Enoch
- Centre for Nanoscience and Genomics, Karunya Institute of Technology and Sciences (Deemed University), Coimbatore 641114, Tamil Nadu, India.
| | - Mhejabeen Sayed
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 00085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India.
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4
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Sayed M, Pal H. An overview from simple host-guest systems to progressively complex supramolecular assemblies. Phys Chem Chem Phys 2021; 23:26085-26107. [PMID: 34787121 DOI: 10.1039/d1cp03556h] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Supramolecular chemistry involving macrocyclic hosts is a highly interdisciplinary and fast-growing research field in chemistry, biochemistry, and materials science. Host-guest based supramolecular assemblies, as constructed through non-covalent interactions, are highly dynamic in nature, and can be tuned easily using their responses to various external stimuli, providing a convenient approach to achieve excellent functional materials. Macrocyclic hosts, particularly cyclodextrins, cucurbit[n]urils, and calix[n]arenes, which have unique features like possessing hydrophobic cavities of different sizes, along with hydrophilic external surfaces, which are also amenable towards easy derivatizations, are versatile cavitands or host molecules to encapsulate diverse guest molecules to form stable host-guest complexes with many unique structures and properties. Interestingly, host-guest complexes possessing amphiphilic properties can easily lead to the formation of various advanced supramolecular assemblies, like pseudorotaxanes, rotaxanes, polyrotaxanes, supramolecular polymers, micelles, vesicles, supramolecular nanostructures, and so on. Moreover, these supramolecular assemblies, with varied morphologies and responsiveness towards external stimuli, have immense potential for applications in nanotechnology, materials science, biosensors, drug delivery, analytical chemistry and biomedical sciences. In this perspective, we present a stimulating overview, discussing simple host-guest systems to complex supramolecular assemblies in a systematic manner, aiming to encourage future researchers in this fascinating area of supramolecular chemistry to develop advanced supramolecular materials with superior functionalities, for their deployment in diverse applied areas.
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Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Haridas Pal
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.,Analytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
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5
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Golcs Á, Ádám BÁ, Vezse P, Huszthy P, Tóth T. Synthesis and Spectrophotometric Studies of 9‐Substituted‐4,5‐dimethoxyacridine Multifunctionalizable Fluorescent Dyes and Their Macrocyclic Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ádám Golcs
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Bálint Árpád Ádám
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Panna Vezse
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Tünde Tóth
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
- Institute for Energy Security and Environmental Safety Centre for Energy Research Konkoly-Thege Miklós út 29–33 1121 Budapest Hungary
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6
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Dutta Choudhury S, Pal H. Supramolecular and suprabiomolecular photochemistry: a perspective overview. Phys Chem Chem Phys 2021; 22:23433-23463. [PMID: 33112299 DOI: 10.1039/d0cp03981k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this perspective review article, we have attempted to bring out the important current trends of research in the areas of supramolecular and suprabiomolecular photochemistry. Since the spans of the subject areas are very vast, it is impossible to cover all the aspects within the limited space of this review article. Nevertheless, efforts have been made to assimilate the basic understanding of how supramolecular interactions can significantly change the photophysical and other related physiochemical properties of chromophoric dyes and drugs, which have enormous academic and practical implications. We have discussed with reference to relevant chemical systems where supramolecularly assisted modulations in the properties of chromophoric dyes and drugs can be used or have already been used in different areas like sensing, dye/drug stabilization, drug delivery, functional materials, and aqueous dye laser systems. In supramolecular assemblies, along with their conventional photophysical properties, the acid-base properties of prototropic dyes, as well as the excited state prototautomerization and related proton transfer behavior of proton donor/acceptor dye molecules, are also largely modulated due to supramolecular interactions, which are often reflected very explicitly through changes in their absorption and fluorescence characteristics, providing us many useful insights into these chemical systems and bringing out intriguing applications of such changes in different applied areas. Another interesting research area in supramolecular photochemistry is the excitation energy transfer from the donor to acceptor moieties in self-assembled systems which have immense importance in light harvesting applications, mimicking natural photosynthetic systems. In this review article, we have discussed varieties of these aspects, highlighting their academic and applied implications. We have tried to emphasize the progress made so far and thus to bring out future research perspectives in the subject areas concerned, which are anticipated to find many useful applications in areas like sensors, catalysis, electronic devices, pharmaceuticals, drug formulations, nanomedicine, light harvesting, and smart materials.
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Affiliation(s)
- Sharmistha Dutta Choudhury
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai-400085, India. and Homi Bhabha National Institute, Anushaktinagar, Trombay, Mumbai-400094, India
| | - Haridas Pal
- Homi Bhabha National Institute, Anushaktinagar, Trombay, Mumbai-400094, India and Analytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400085, India.
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7
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Sayed M, Balayan J, Singh PK, Pal H. Modulation of excited-state photodynamics of ESIPT probe 1′-hydroxy-2′-acetonaphthone (HAN) on interaction with bovine serum albumin. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Prediction of the most preferable rotamer of meta-aminophenol in β-cyclodextrin cavity in aqueous medium by using spectroscopic and DFT computational studies. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-00985-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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9
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One-pot synthesis of star-shaped conjugated oligomers based on 3-hexylthiophene, pyrene and triphenylamine as TNT chemosensors. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Cai X, Kataria R, Gibb BC. Intrinsic and Extrinsic Control of the p Ka of Thiol Guests inside Yoctoliter Containers. J Am Chem Soc 2020; 142:8291-8298. [PMID: 32271561 DOI: 10.1021/jacs.0c00907] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Despite decades of research, there are still many open questions surrounding the mechanisms by which enzymes catalyze reactions. Understanding all the noncovalent forces involved has the potential to allow de novo catalysis design, and as a step toward this, understanding how to control the charge state of ionizable groups represents a powerful yet straightforward approach to probing complex systems. Here we utilize supramolecular capsules assembled via the hydrophobic effect to encapsulate guests and control their acidity. We find that the greatest influence on the acidity of bound guests is the location of the acidic group within the yoctoliter space. However, the nature of the electrostatic field generated by the (remote) charged solubilizing groups also plays a significant role in acidity, as does counterion complexation to the outer surfaces of the capsules. Taken together, these results suggest new ways by which to affect reactions in confined spaces.
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Affiliation(s)
- Xiaoyang Cai
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Rhea Kataria
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Bruce C Gibb
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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11
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Aqueous on/off fluorescent switches based on systems of quinoline / quinoline-macrocycle. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Acidity constant of pH indicators in the supramolecular systems studied by two CE-based methods compared using the RGB additive color model. Anal Bioanal Chem 2019; 412:577-588. [PMID: 31838556 DOI: 10.1007/s00216-019-02289-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/31/2019] [Accepted: 11/14/2019] [Indexed: 02/07/2023]
Abstract
Acid-base properties of methyl orange, bromocresol green, bromophenol blue, and bromothymol blue were thoroughly investigated in the past due to their application as colorimetric pH indicators. However, it is still unknown how these properties change upon the supramolecular host-guest interactions. Owing to the growing interest in using supramolecular host-guest interactions to reach expected modification of various physicochemical properties of guests, we decided to address this question in the present article. We estimated the shifts of pKa values induced by diverse hosts (cyclodextrins, cucurbiturils, calixarenes, micelles, and serum albumin) and performed a thermodynamic analysis of the selected systems. To make a deeper insight, we confronted the aforementioned dyes with the other kinds of molecules studied by us in the past. In overall, the results obtained demonstrate a large multiplicity of possible pKa behaviors, their poor predictability, and the existence of subtle structure-acidity relationships. In addition, we observed three thermodynamically different mechanisms of pKa alteration. Therefore, more studies are needed to bring closer the promising perspective of a programmable acidity's tuning. Our methodology was based on capillary electrophoresis (CE) applied in two parallel variants: a classical method based on the fitting of a nonlinear function, and an alternative two-value method (TVM), which requires over twice less measurements to estimate pKa. To identify the optimal approach for further studies, both methods were comprehensively compared and discussed based on the RGB additive color model, a user-friendly scale that integrates three primary aspects of an analytical method: analytical performance, green chemistry, and practicality.
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13
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Sayed M, Gubbala GK, Pal H. Contrasting interactions of DNA-intercalating dye acridine orange with hydroxypropyl derivatives of β-cyclodextrin and γ-cyclodextrin hosts. NEW J CHEM 2019. [DOI: 10.1039/c8nj04067b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present study demonstrates contrasting binding interactions of acridine orange dye with HPβCD and HPγCD hosts, always illustrating fluoresence “turn on” in the case of HPβCD and showing an interesting fluorescence “off/on switching” in the case of the HPγCD host.
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Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Ganesh K. Gubbala
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Haridas Pal
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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14
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Cyclodextrin-induced acidity modification of substituted cathinones studied by capillary electrophoresis supported by density functional theory calculations. J Chromatogr A 2018; 1580:142-151. [DOI: 10.1016/j.chroma.2018.10.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 10/08/2018] [Accepted: 10/16/2018] [Indexed: 11/22/2022]
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15
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Sayed M, Panjwani S, Pal H. Sulfated β-Cyclodextrin Templated Assembly and Disassembly of Acridine Orange: Unraveling Contrasting Binding Mechanisms and Light Off/On Switching. ChemistrySelect 2018. [DOI: 10.1002/slct.201801563] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
| | - Shirin Panjwani
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
| | - Haridas Pal
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre, Mumbai 400 085, India & Homi Bhabha National Institute, Anushaktinagar; Mumbai 400 094 India
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16
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Al-Dubaili N, El-Tarabily K, Saleh N. Host-guest complexes of imazalil with cucurbit[8]uril and β-cyclodextrin and their effect on plant pathogenic fungi. Sci Rep 2018; 8:2839. [PMID: 29434320 PMCID: PMC5809605 DOI: 10.1038/s41598-018-21156-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 01/31/2018] [Indexed: 02/01/2023] Open
Abstract
We report the control of imazalil (IMZ) antifungal activity utilizing its non-covalent assembly with β-cyclodextrins (β-CD) and cucurbit[8]uril (CB8) macrocycles, as well as its stimuli-responsive disassembly with cadaverine. The NMR results are consistent with inclusion of a single IMZ molecule inside the cavities of either CB8 from its aromatic site or β-CD from its aliphatic end. Efficient complex formation with both host molecules and controlled released upon the addition of cadaverine is supported by NMR measurements. The stimuli-responsiveness of the same host-guest assemblies with cadaverine was validated against seven economically important plant pathogenic fungi which cause agriculturally important plant diseases across the globe. While loading the drug into macrocycles cavities suppressed its activity, subsequent adding of cadaverine efficiently restored it up. The results in the present paper enable researchers working in the area of mycology and plant pathology to inhibit or reduce the fungal growth on demand in order to control these economically important plant pathogenic fungi.
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Affiliation(s)
- Naji Al-Dubaili
- Chemistry Department, College of Science, United Arab Emirates University, P.O. Box, 15551, Al-Ain, United Arab Emirates
| | - Khaled El-Tarabily
- Biology Department, College of Science, United Arab Emirates University, P.O. Box, 15551, Al-Ain, United Arab Emirates
| | - Na'il Saleh
- Chemistry Department, College of Science, United Arab Emirates University, P.O. Box, 15551, Al-Ain, United Arab Emirates.
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17
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Synthesis and characterization of host–guest inclusion complex of m-cresol with β-cyclodextrin. J INCL PHENOM MACRO 2017. [DOI: 10.1007/s10847-017-0765-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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18
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Das I, Halder M. Counterpointing Scenarios on the Fate of Different Prototropic Forms of Norfloxacin Housed in the Pocket of Lysozyme: The Nonelectrostatic Interactions in the Protein Interior Are in the Controlling Role on the Prototropic Equilibria of the Guest. ACS OMEGA 2017; 2:5504-5517. [PMID: 30023748 PMCID: PMC6044686 DOI: 10.1021/acsomega.7b00703] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 08/16/2017] [Indexed: 05/21/2023]
Abstract
Herein, we report a comprehensive study on the interaction of three protomeric forms of the antibacterial drug norfloxacin (nfx) with the enzymatic protein human lysozyme (lyz). Norfloxacin, having the option for two-stage acid-base equilibria, converts from cationic (nfx+) to zwitterionic (nfx±) form, followed by an anionic (nfx-) species, with increasing pH. Among these protomeric forms, lysozyme binds nfx± most robustly, whereas nfx- has a weak association and nfx+ does not show any interaction. In lysozyme, the location of the drug was ascertained by competitive binding assay with 8-anilino-1-naphthalenesulfonate, and this was further examined with molecular docking simulation. The binding process was found to be primarily governed by hydrogen bonding and van der Waals interactions. The study has further revealed that preferential binding of nfx± by the protein over nfx- led to a switchover of nfx- to nfx±; and the resulting increased population of nfx± over the other is beneficial for the pharmacological activity of the drug in terms of its accumulation in the target bacterial cells. The present study accomplishes two important objectives. It holds significance regarding the differential interaction of multiprotomeric drugs with biomolecules, such as proteins, enzymes, lipid membranes, etc., and also on such biomolecule-assisted alteration of the acid-base equilibrium and consequent bioavailability of the drug. The findings are useful from the viewpoints of dispensation, distribution, and metabolism of any prototropic drug in living systems as they encounter several biomolecules in vivo. Another importance of this work stems from the study of comparative binding responses of lysozyme toward a drug existing in multiple forms depending on its protonation states or some other chemical processes.
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Affiliation(s)
| | - Mintu Halder
- E-mail: . Tel: +91-3222-283314. Fax: +91-3222-282252
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19
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Boraste DR, Chakraborty G, Ray AK, Shankarling GS, Pal H. pH-Responsive Interaction of Fluorogenic Antimalarial Drug Quinine with Macrocyclic Host Cucurbit[7]uril: Modulations in Photophysical and Acid-Base Properties. ChemistrySelect 2017. [DOI: 10.1002/slct.201700686] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Deepak R. Boraste
- Department of Dyestuff Technology; Institute of Chemical Technology; Matunga Mumbai- 400019 India
| | - Goutam Chakraborty
- Laser & Plasma Technology Division, BARC; Mumbai- 400085 India & Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Alok K. Ray
- Laser & Plasma Technology Division, BARC; Mumbai- 400085 India & Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Ganapati S. Shankarling
- Department of Dyestuff Technology; Institute of Chemical Technology; Matunga Mumbai- 400019 India
| | - Haridas Pal
- Radiation & Photochemistry Division, BARC; Mumbai- 400085 India & Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
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20
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Nowak PM, Sagan F, Mitoraj MP. Origin of Remarkably Different Acidity of Hydroxycoumarins—Joint Experimental and Theoretical Studies. J Phys Chem B 2017; 121:4554-4561. [DOI: 10.1021/acs.jpcb.7b01849] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paweł Mateusz Nowak
- Faculty
of Chemistry, Department of Analytical Chemistry, Jagiellonian University in Kraków, Ingardena 3, 30-060 Kraków, Poland
| | - Filip Sagan
- Faculty
of Chemistry, Department of Theoretical Chemistry, Jagiellonian University in Kraków, Ingardena 3, 30-060 Kraków, Poland
| | - Mariusz Paweł Mitoraj
- Faculty
of Chemistry, Department of Theoretical Chemistry, Jagiellonian University in Kraków, Ingardena 3, 30-060 Kraków, Poland
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21
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Enhancing effectiveness of capillary electrophoresis as an analytical tool in the supramolecular acidity modification. Anal Bioanal Chem 2017; 409:3633-3643. [PMID: 28341986 PMCID: PMC5406438 DOI: 10.1007/s00216-017-0305-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/01/2017] [Accepted: 03/08/2017] [Indexed: 12/15/2022]
Abstract
A strategic modification of acidity (pKa values) by the non-covalent host-guest interactions is one of the most promising concepts in current supramolecular chemistry. This work is aimed at enhancing the effectiveness of capillary electrophoresis (CE) in determination of pKa shifts caused by such interactions and their thermal dependencies crucial in a deep thermodynamic description. We show how to (i) minimize the systematic errors related to Joule heating, (ii) minimize the influence of a voltage ramp time, (iii) speed up pKa shift identification and estimation, (iv) interpret thermal effects related to two overlapped dynamic equilibria, and (v) determine pKa shifts by an alternative spectrophotometric method (CE-DAD). The proposed solutions were implemented to examine the supramolecular pKa shifts of several coumarin derivatives, caused by a variety of structurally different cyclodextrins. It was revealed that a specific host substitution pattern determines the magnitude of apparent pKa shifts. Accordingly, heptakis(2,6-di-O-methyl)-β-cyclodextrin induces the much stronger shifts than both non-methylated-β-cyclodextrin and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin applied at the same concentration. We also show that insofar as the complexation of 4-hydroxycoumarin and its derivative (coumatetralyl) are similarly exothermic, the thermal effects accompanying the deprotonation process are remarkably different for both molecules. The pKa shift induced by complexation with calixarene was also for the first time determined by a CE method. These observations throw a new light on the background of acidity modification and confirm the applicability of CE as an analytical tool.
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22
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McTernan HL, Ngo HT, Pham DT, Clements P, Lincoln SF, Wang J, Guo X, Easton CJ. Host-Guest Chemistry of Linked β- and γ-Cyclodextrin Dimers and 1- and 2-Naphthyl-Sulfonamide Substituted Poly(acrylate)s in Aqueous Solution. ChemistrySelect 2017. [DOI: 10.1002/slct.201601630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hamish L. McTernan
- Department of Chemistry; University of Adelaide; Adelaide SA 5005 Australia
| | - Huy T. Ngo
- Department of Chemistry; University of Adelaide; Adelaide SA 5005 Australia
| | - Duc-Truc Pham
- Department of Chemistry; University of Adelaide; Adelaide SA 5005 Australia
| | - Philip Clements
- Department of Chemistry; University of Adelaide; Adelaide SA 5005 Australia
| | - Stephen F. Lincoln
- Department of Chemistry; University of Adelaide; Adelaide SA 5005 Australia
| | - Jie Wang
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Christopher J. Easton
- Research School of Chemistry; Australian National University; Canberra ACT 2601 Australia
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23
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Khurana R, Barooah N, Bhasikuttan AC, Mohanty J. Modulation in the acidity constant of acridine dye with cucurbiturils: stimuli-responsive pKa tuning and dye relocation into live cells. Org Biomol Chem 2017; 15:8448-8457. [DOI: 10.1039/c7ob02135f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cucurbit[7/8]uril–acridine complexes result in striking modulation of the excited state properties of acridine and allowed a tunable upward pKa shift, which is applied for controlled relocation of the dye from the host to live cells.
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Affiliation(s)
- R. Khurana
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
- Homi Bhabha National Institute
| | - N. Barooah
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - A. C. Bhasikuttan
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
- Homi Bhabha National Institute
| | - J. Mohanty
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
- Homi Bhabha National Institute
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24
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Sayed M, Jha S, Pal H. Complexation induced aggregation and deaggregation of acridine orange with sulfobutylether-β-cyclodextrin. Phys Chem Chem Phys 2017; 19:24166-24178. [DOI: 10.1039/c7cp03135a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The present study illustrates intriguing switching of multi-mode binding interactions of acridine orange dye with a sulfobutylether-β-cyclodextrin host.
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Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Shruti Jha
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Haridas Pal
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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25
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Ganguly A, Ghosh S, Guchhait N. Inclusion of an Anthracene-based Fluorophore within Molecular Containers: A Comparative Study of the Cucurbituril and Cyclodextrin Host Families. J Phys Chem B 2016; 120:4421-30. [PMID: 27119387 DOI: 10.1021/acs.jpcb.6b04178] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, the binding interaction of a promising chloride channel blocker, 9-methyl anthroate (9-MA), with two different classes of molecular containers, β-cyclodextrins (β-CD and methyl-β-CD) and cucurbit[7]uril, having comparable cavity dimensions, has been thoroughly demonstrated via inspection of the modulation of the excited-state properties of the emissive molecule. Spectral data suggest that CB7 encapsulates the probe more efficiently in a 1:2 fashion, whereas the efficacies of β-CDs are relatively less and the corresponding stoichiometry is 1:1. Interestingly, despite being thermodynamically much more favorable than the probe-β-CD complexation equilibria, the fraction of probe-CB7 complex formed is appreciably smaller with respect to that of probe-β-CD complexes. This apparent inconsistency has been addressed via the proposition that since the formation of a 1:2 complex is entropically disadvantageous, it is anticipated that the activation barrier of the corresponding reaction is reasonably high, and thus only a small fraction of the reactants are able to surpass the energy barrier to form the products. This proposition has been thoroughly corroborated by fluorescence lifetime measurements at different temperatures.
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Affiliation(s)
- Aniruddha Ganguly
- Department of Chemistry, University of Calcutta , 92 Acharya Prafulla Chandra Road, Calcutta 700009, India
| | - Soumen Ghosh
- Department of Chemistry, University of Calcutta , 92 Acharya Prafulla Chandra Road, Calcutta 700009, India
| | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta , 92 Acharya Prafulla Chandra Road, Calcutta 700009, India
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26
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Sayed M, Shinde K, Shah R, Pal H. pH-Responsive Indicator Displacement Assay of Acetylcholine Based on Acridine-p-Sulfonatocalix[4]arene Supramolecular System: Fluorescence Off/On Switching and Reversible pKaShift. ChemistrySelect 2016. [DOI: 10.1002/slct.201600226] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
| | - Ketaki Shinde
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
| | - Ramesh Shah
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
| | - Haridas Pal
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
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27
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Cyclodextrin-grafted thiacalix [4]arene netty polymer based on the click chemistry: preparation and efficient adsorption for organic dyes. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-0920-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Novel β-cyclodextrin-[60]fullerene conjugates based on Huisgen [2+3] cycloaddition: synthesis and dyes complexation properties. J INCL PHENOM MACRO 2015. [DOI: 10.1007/s10847-015-0585-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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29
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Varghese B, Al-Busafi SN, Suliman FO, Al-Kindy SMZ. Study on the spectral and inclusion properties of a sensitive dye, 3-naphthyl-1-phenyl-5-(5-fluoro-2-nitrophenyl)-2-pyrazoline, in solvents and β-cyclodextrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:661-671. [PMID: 25448966 DOI: 10.1016/j.saa.2014.09.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 09/13/2014] [Accepted: 09/19/2014] [Indexed: 06/04/2023]
Abstract
3-Naphthyl-1-phenyl-5-(5-fluoro-2-nitrophenyl)-2-pyrazoline (NPFP), a fluorogenic probe and its derivative NPFP-Phenylephrine were synthesized and their absorption and fluorescence properties were recorded in solvents of varying polarity. Spectroscopic studies reveal that, the solvatochromic behavior of the compounds depend not only on the polarity but also on the hydrogen-bonding properties of the solvents. The effects of β-cyclodextrin on the fluorescence properties of both compounds were studied. It was found that there is an enhancement in the fluorescence intensity of labeled drug (NPFP-Phenylephrine) in the presence of β-cyclodextrin. In the present study, the molecular motions of NPFP-Phenylephrine embedded in a β-cyclodextrin cavity have been investigated by fluorescence techniques in steady-state and time resolved modes.
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Affiliation(s)
- Beena Varghese
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman
| | - Saleh N Al-Busafi
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman
| | - FakhrEldin O Suliman
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman.
| | - Salma M Z Al-Kindy
- Department of Chemistry, College of Science, Sultan Qaboos University, Box 36, Al-khod 123, Sultanate of Oman, Oman.
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30
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Sayed M, Sundararajan M, Mohanty J, Bhasikuttan AC, Pal H. Photophysical and Quantum Chemical Studies on the Interactions of Oxazine-1 Dye with Cucurbituril Macrocycles. J Phys Chem B 2015; 119:3046-57. [DOI: 10.1021/jp509243j] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Mahesh Sundararajan
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Jyotirmayee Mohanty
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Achikanath C. Bhasikuttan
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Haridas Pal
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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31
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Nowak PM, Woźniakiewicz M, Mitoraj MP, Garnysz M, Kościelniak P. Modulation of pKa by cyclodextrins; subtle structural changes induce spectacularly different behaviors. RSC Adv 2015. [DOI: 10.1039/c5ra14032c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Supramolecular acidity tuning: it is shown that minor structural changes of guests and hosts molecules may be of great importance for the complexation-induced pKa shifts and their temperature dependency.
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Affiliation(s)
- Paweł M. Nowak
- Department of Analytical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Michał Woźniakiewicz
- Department of Analytical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Mariusz P. Mitoraj
- Department of Theoretical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Magdalena Garnysz
- Department of Analytical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Paweł Kościelniak
- Department of Analytical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
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32
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Sayed M, Pal H. pH-Assisted control over the binding and relocation of an acridine guest between a macrocyclic nanocarrier and natural DNA. Phys Chem Chem Phys 2015; 17:9519-32. [DOI: 10.1039/c4cp05335d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Controlled binding and relocation of a dye–drug between a macrocyclic nanocarrier and natural DNA is demonstrated using pH as a stimulus.
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Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Haridas Pal
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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33
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Nowak PM, Woźniakiewicz M, Mitoraj MP, Sagan F, Kościelniak P. Enthalpy–entropy relations in the acid–base equilibrium of warfarin and 10-hydroxywarfarin; joint experimental and theoretical studies. RSC Adv 2015. [DOI: 10.1039/c5ra11623f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Warfarin and 10-hydroxywarfarin are structurally similar molecules, however, they exhibit considerably different thermodynamics of acid dissociation. Intramolecular H-bonds and solvent composition are the factors of great importance.
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Affiliation(s)
- Paweł Mateusz Nowak
- Department of Analytical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Michał Woźniakiewicz
- Department of Analytical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Mariusz Paweł Mitoraj
- Department of Theoretical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Filip Sagan
- Department of Theoretical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Paweł Kościelniak
- Department of Analytical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
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34
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Jadhav A, Kalyani VS, Barooah N, Malkhede DD, Mohanty J. Molecular-Recognition-Assisted pKaShifts and Metal-Ion-Induced Fluorescence Regeneration inp-Sulfonatocalix[6]arene-Encapsulated Acridine. Chemphyschem 2014; 16:420-7. [DOI: 10.1002/cphc.201402591] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Indexed: 11/07/2022]
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35
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Bani-Yaseen AD, Mo'ala A. Spectral, thermal, and molecular modeling studies on the encapsulation of selected sulfonamide drugs in β-cyclodextrin nano-cavity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 131:424-431. [PMID: 24835946 DOI: 10.1016/j.saa.2014.04.136] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/13/2014] [Accepted: 04/14/2014] [Indexed: 06/03/2023]
Abstract
In the present work the inclusion complexation of three sulfonamide (SA) drugs, namely sulfisoxazole (SSX), sulfamethizole (SMZ), and Sulfamethazine (STM) with β-cyclodextrin (β-CD) has been investigated using UV-Vis spectroscopy, DSC, (1)H NMR spectroscopy, and molecular modeling methods. The binding constant (Kb) of SA:β-CD inclusion complexation was determined via applying the modified form of Benesi-Hildebrand equation employing the changes in absorbance at λmax. Obtained results revealed that SA drugs form 1:1 inclusion complex with β-CD with Kb of 650, 1532, 714M(-1) at 25°C for SSX, SMZ, and STM, respectively. The UV-Vis absorption spectra displayed solvatochromic behavior of bathochromic shift with decreasing solvent polarity that in turn is good agreement with their behavior in the presence of β-CD in terms of environment polarity dependency. The inclusion complex formation between β-CD and tested SA drugs in liquid and solid states was confirmed by (1)H NMR and DSC, respectively. Using semi-empirical quantum chemistry methods at PM3 theoretical level, inclusion complexes' structures as well as energetic and thermodynamic parameters of encapsulation were elucidated. Obtained results revealed that the encapsulation is favorably energetic and enthalpic in nature with the inclusion of the aniline moiety through the wide rim side of β-CD nano-cavity. Further, molecular modeling revealed that β-CD encapsulation of SA drugs reduced their (EHOMO-ELUMO) gap.
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Affiliation(s)
- Abdulilah Dawoud Bani-Yaseen
- Department of Chemistry & Earth Sciences, College of Arts & Science, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Abeer Mo'ala
- Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah, Saudi Arabia
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36
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Detailed Scenario of the Acid–Base Behavior of Prototropic Molecules in the Subdomain-IIA Pocket of Serum Albumin: Results and Prospects in Drug Delivery. J Phys Chem B 2014; 118:12153-67. [DOI: 10.1021/jp5076466] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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37
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Wan MM, Zhu HY, Li YY, Ma J, Liu S, Zhu JH. Novel CO2-capture derived from the basic ionic liquids orientated on mesoporous materials. ACS APPLIED MATERIALS & INTERFACES 2014; 6:12947-12955. [PMID: 25032910 DOI: 10.1021/am5028814] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Two new basic ionic liquids (ILs) are designed and synthesized in order to conquer the challenge arising from the capture of CO2 in flue gas whose temperature is over 373 K, and they possess a suitable basic strength to adsorb CO2 at 393 K with the capacity of 22-49 mg g(-1). After these ILs are immobilized on mesoporous alumina or silica, equimolar CO2 capture is realized at 393 K for the first time. Besides, these adsorbents can be regenerated at 443 K to form a feasible cycle for controlling CO2 emission in flue gas. Theoretical calculations indicated the key role played by the mesoporous support in promoting CO2 adsorption via electrostatic interactions between support and ILs. An unwonted promotion of the support's ζ-potential on the performance of ILs is revealed, which induces the immobilized ILs to be oriented in a favorable dispersion, enhancing the efficiency of ILs in the CO2 adsorption at elevated temperature. This study proposes a new strategy for the sustainable development of novel adsorbent.
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Affiliation(s)
- Mi Mi Wan
- Key Laboratory of Mesoscopic Chemistry of MOE, College of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
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38
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Datta S, Halder M. Effect of encapsulation in the anion receptor pocket of sub-domain IIA of human serum albumin on the modulation of pKa of warfarin and structurally similar acidic guests: A possible implication on biological activity. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 130:76-85. [DOI: 10.1016/j.jphotobiol.2013.10.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/03/2013] [Accepted: 10/19/2013] [Indexed: 01/01/2023]
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39
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Das R, Duportail G, Ghose A, Richert L, Klymchenko A, Chakraborty S, Yesylevskyy S, Mely Y. Tuning excited-state proton transfer dynamics of a 3-hydroxychromone dye in supramolecular complexes via host–guest steric compatibility. Phys Chem Chem Phys 2014; 16:776-84. [DOI: 10.1039/c3cp52597j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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