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Ukani H, Pratyush, Kumar S, Aswal VK, Al‐Ghamdi AA, Malek NI. Cholesterol Mediated Stable Vesicles: A Nano Drug Delivery Vehicle for Anti‐cancer Drugs Curcumin and 5‐Fluorourecil. ChemistrySelect 2022. [DOI: 10.1002/slct.202201613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hiral Ukani
- Ionic Liquids Research Laboratory Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat 395007 Gujarat India
| | - Pratyush
- Ionic Liquids Research Laboratory Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat 395007 Gujarat India
| | - Sugam Kumar
- Solid State Physics Division Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
| | - Vinod K Aswal
- Solid State Physics Division Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
| | - Azza A. Al‐Ghamdi
- Department of Chemistry College of Science Imam Abdul Rahman Bin Faisal University P.O. Box 1982 Dammam 31441 Saudi Arabia
- Basic & Applied Scientific Research Center (BASRC) Water Treatment Unit Imam Abdulrahman Bin Faisal University P.O. Box 1982 Dammam 31441 Saudi Arabia
| | - Naved I. Malek
- Ionic Liquids Research Laboratory Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat 395007 Gujarat India
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Saien J, Kharazi M, Pino V, Pacheco-Fernández I. Trends offered by ionic liquid-based surfactants: Applications in stabilization, separation processes, and within the petroleum industry. SEPARATION & PURIFICATION REVIEWS 2022. [DOI: 10.1080/15422119.2022.2052094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Javad Saien
- Department of Applied Chemistry, Bu-Ali Sina University, 65174, Hamedan, Iran
| | - Mona Kharazi
- Department of Applied Chemistry, Bu-Ali Sina University, 65174, Hamedan, Iran
| | - Verónica Pino
- Laboratorio de Materiales para Análisis Químico (MAT4LL), Departamento de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), 38206 Tenerife, Spain
- Unidad de Investigación de Bioanalítica y Medioambiente, Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL), 38206 Tenerife, Spain
| | - Idaira Pacheco-Fernández
- Laboratorio de Materiales para Análisis Químico (MAT4LL), Departamento de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), 38206 Tenerife, Spain
- Unidad de Investigación de Bioanalítica y Medioambiente, Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL), 38206 Tenerife, Spain
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Shah A, Patel T, Al-Ghamdi AA, Malek NI. Stimuli responsive self-assembled structural aggregates of ionic liquid based surfactants as the membrane free microreactors for dyes sequestration and drug encapsulation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Ionic liquid-based catanionic vesicles: A de novo system to judiciously improve the solubility, stability and antimicrobial activity of curcumin. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117396] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Biocompatible Solvents and Ionic Liquid-Based Surfactants as Sustainable Components to Formulate Environmentally Friendly Organized Systems. Polymers (Basel) 2021; 13:polym13091378. [PMID: 33922597 PMCID: PMC8122929 DOI: 10.3390/polym13091378] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 01/03/2023] Open
Abstract
In this review, we deal with the formation and application of biocompatible water-in-oil microemulsions commonly known as reverse micelles (RMs). These RMs are extremely important to facilitate the dissolution of hydrophilic and hydrophobic compounds for biocompatibility in applications in drug delivery, food science, and nanomedicine. The combination of two wisely chosen types of compounds such as biocompatible non-polar solvents and ionic liquids (ILs) with amphiphilic character (surface-active ionic liquids, SAILs) can be used to generate organized systems that perfectly align with the Green Chemistry concepts. Thus, we describe the current state of SAILs (protic and aprotic) to prepare RMs using non-polar but safe solvents such as esters derived from fatty acids, among others. Moreover, the use of the biocompatible solvents as the external phase in RMs and microemulsions/nanoemulsions with the other commonly used biocompatible surfactants is detailed showing the diversity of preparations and important applications. As shown by multiple examples, the properties of the RMs can be modified by changes in the type of surfactant and/or external solvents but a key fact to note is that all these modifications generate novel systems with dissimilar properties. These interesting properties cannot be anticipated or extrapolated, and deep analysis is always required. Finally, the works presented provide valuable information about the use of biocompatible RMs, making them a green and promising alternative toward efficient and sustainable chemistry.
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Lone MS, Bhat PA, Afzal S, Chat OA, Dar AA. Energy transduction through FRET in self-assembled soft nanostructures based on surfactants/polymers: current scenario and prospects. SOFT MATTER 2021; 17:425-446. [PMID: 33400748 DOI: 10.1039/d0sm01625j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The self-assembled systems of surfactants/polymers, which are capable of supporting energy funneling between fluorophores, have recently gained significant attraction. Surfactant and polymeric micelles form nanoscale structures spanning a radius of 2-10 nm are generally suitable for the transduction of energy among fluorophores. These systems have shown great potential in Förster resonance energy transfer (FRET) due to their unique characteristics of being aqueous based, tendency to remain self-assembled, spontaneous formation, tunable nature, and responsiveness to different external stimuli. This review presents current developments in the field of energy transfer, particularly the multi-step FRET processes in the self-assembled nanostructures of surfactants/polymers. The part one of this review presents a background and brief overview of soft systems and discusses certain aspects of the self-assemblies of surfactants/polymers and their co-solubilization property to bring fluorophores to close proximity to transduce energy. The second part of this review deals with single-step and multi-step FRET in the self-assemblies of surfactants/polymers and links FRET systems with advanced smart technologies including multicolor formation, data encryption, and artificial antenna systems. This review also discusses the diverse examples in the literature to present the emerging applications of FRET. Finally, the prospects regarding further improvement of FRET in self-assembled soft systems are outlined.
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Affiliation(s)
- Mohd Sajid Lone
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Parvaiz Ahmad Bhat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Saima Afzal
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Oyais Ahmad Chat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Aijaz Ahmad Dar
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
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Lone MS, Afzal S, Chat OA, Bhat PA, Dutta R, Zhang Y, Kundu N, Dar AA. Broad Spectrum Tunable Photoluminescent Material Based on Cascade Fluorescence Resonance Energy Transfer between Three Fluorophores Encapsulated within the Self-Assembled Surfactant Systems. J Phys Chem B 2019; 123:9699-9711. [PMID: 31640345 DOI: 10.1021/acs.jpcb.9b07139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A broad spectrum tunable photoluminescent material with dual encryption based on a two-step fluorescence resonance energy transfer (FRET) between pyrene (Py), coumarin 480 (Cou480), and rhodamine 6G (R6G) in micelles of SDS and bmimDS is presented. The phenomenon is achievable due to the encapsulation of the fluorophores within these micelles. The transfer of energy as FRET between the pair Py and Cou480 showed ON at 336 nm and OFF at 402 nm in contrast to the FRET observed between the pair Cou480 and R6G that showed ON at 402 nm and OFF at 336 nm. However, the transfer of energy as FRET occurs from Py to R6G in the presence of Cou480 when excited at 336 nm, thereby making it a chain of three fluorophores with Cou480 acting as a relay fluorophore receiving energy from Py and transferring it to R6G. The different FRET scenarios between the three fluorophores in micelles provide a window for the generation of a matrix of colors, which occupies a significant 2D area in the chromaticity diagram, having potential applications in security printing. The different fluorophoric ratios generate different colors based on their individual photonic emissions and the FRET processes taking place between them. Writing tests were carried out using varied ratios of the fluorophores in the micellar systems producing different colored outputs under the UV light with insignificant visibility under the white light. We envision that this as-discovered three fluorophoric FRET system could form the basis for the future development of multi-FRET light-harvesting devices and anti-counterfeiting security inks based on much simpler non-covalent interaction aided encapsulation of the fluorophores within the self-assembled soft systems.
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Affiliation(s)
- Mohd Sajid Lone
- Physical Chemistry Division, Department of Chemistry , University of Kashmir , Hazratbal, Srinagar - 190006 , J&K , India
| | - Saima Afzal
- Physical Chemistry Division, Department of Chemistry , University of Kashmir , Hazratbal, Srinagar - 190006 , J&K , India
| | - Oyais Ahmad Chat
- Physical Chemistry Division, Department of Chemistry , University of Kashmir , Hazratbal, Srinagar - 190006 , J&K , India.,Department of Chemistry , Govt. Degree College Pulwama , Pulwama - 192301 , J&K , India
| | - Parvaiz Ahmad Bhat
- Department of Chemistry , Govt. Degree College Pulwama , Pulwama - 192301 , J&K , India
| | - Rupam Dutta
- Department of Chemistry , Indian Institute of Technology Kharagpur , Kharagpur - 721302 , West Bengal , India
| | - Yongliang Zhang
- Department of Chemical Engineering and Materials Science , University of Minnesota Twin Cities , 421 Washington Avenue , Minneapolis , Minnesota 55455 , United States
| | - Niloy Kundu
- Department of Chemistry , Indian Institute of Technology Kharagpur , Kharagpur - 721302 , West Bengal , India.,Environment Research Group, Research and Development , Tata Steel , Jamshedpur - 831001 , Jharkhand , India
| | - Aijaz Ahmad Dar
- Physical Chemistry Division, Department of Chemistry , University of Kashmir , Hazratbal, Srinagar - 190006 , J&K , India
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Lépori CMO, Correa NM, Silber JJ, Vaca Chávez F, Falcone RD. Interfacial properties modulated by the water confinement in reverse micelles created by the ionic liquid-like surfactant bmim-AOT. SOFT MATTER 2019; 15:947-955. [PMID: 30644504 DOI: 10.1039/c8sm02217h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The behavior of the interfacial water entrapped in reverse micelles (RMs) that were formed by the ionic liquid-like surfactant 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (bmim-AOT) was investigated with the use of UV-Vis absorption spectroscopy and nuclear magnetic resonance (NMR) relaxometry. The solvatochromism of two molecular probes, namely, 1-methyl-8-oxyquinolinium betaine (QB) and N,N,N',N'-tetramethylethylenediamine copper(ii)acetylacetonate tetraphenylborate ([Cu(acac)(tmen)][B(C6H5)4]), was investigated. As a comparison, the analog RMs formed by sodium 1,4-bis-2-ethylhexylsulfosuccinate (Na-AOT) were also explored. By varying the water content inside the RMs and consequently the different magnitude of the water-surfactant interactions at the interface, interesting properties were observed by comparing bmim-AOT and Na-AOT RMs. From the solvatochromic behavior of ([Cu(acac)(tmen)][B(C6H5)4]), we found that the interface in bmim-AOT RMs shows a smaller electron donating capacity than that in Na-AOT RMs. QB revealed that the interfacial region is a weaker hydrogen bond donor and less polar than the corresponding Na-AOT RMs. NMR experiments showed that the molecular motion of water in bmim-AOT RMs is less restricted than that of the water molecules confined in Na-AOT RMs. In summary, the results show how the nature of the bmim+ cation affects the interaction between the entrapped water and the RM interface, greatly modifying the interfacial water structure in comparison with the results known for Na-AOT.
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Affiliation(s)
- Cristian M O Lépori
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, C.P. X5804BYA Río Cuarto, Argentina.
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9
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Venkataraj R, Sarkar A, Girijavallabhan CP, Radhakrishnan P, Nampoori VPN, Kailasnath M. Fluorescence resonance energy-transfer-based fluoride ion sensor. APPLIED OPTICS 2018; 57:4322-4330. [PMID: 29791410 DOI: 10.1364/ao.57.004322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 04/24/2018] [Indexed: 06/08/2023]
Abstract
The present work describes an energy-transfer-based fluoride sensor using the highly photo-stable Coumarin 540a (C540a)-Rhodamine 6g (Rh6g) dye pair. Rh6g exhibits a decrease in fluorescence emission, whereas C540a shows no change in response to fluoride. The increase in fluoride concentration decreases the energy transfer efficiency between the C540a donor and Rh6g acceptor in acetonitrile, leading to a subsequent recovery of fluorescence emission from C540a molecules. The sensing mechanism using fluorescence resonance energy transfer is found to be highly specific towards fluoride detection when compared to the response towards other anions. The fluorescence emission of both dyes is monitored to enable fluoride detection within a broad range.
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Kundu K, Singh AP, Panda S, Singh V, Gardas RL, Senapati S. Study on the Conformation of Entrapped Protein inside the Reverse Micellar Confinement Based on the Amino Acid Derived Ionic Liquid. ChemistrySelect 2018. [DOI: 10.1002/slct.201800918] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kaushik Kundu
- Department of Biotechnology; Bhupat and Jyoti Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
| | - Akhil Pratap Singh
- Department of Biotechnology; Bhupat and Jyoti Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Somenath Panda
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Vikram Singh
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Ramesh L. Gardas
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Sanjib Senapati
- Department of Biotechnology; Bhupat and Jyoti Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
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11
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Lian Y, Zhao K. Broadband dielectric spectroscopy of micelles and microemulsions formed in a hydrophilic ionic liquid: the relaxation mechanism and interior parameters. NEW J CHEM 2018. [DOI: 10.1039/c7nj04813k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Permittivity, conductivity and volume fraction of continuous and dispersed phases of micelles and non-aqueous microemulsions formed in ionic liquid.
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Affiliation(s)
- Yiwei Lian
- Key Laboratory for Resource Exploration Research of Hebei Province
- College of Materials Science and Engineering
- Hebei University of Engineering
- Hebei
- China
| | - Kongshuang Zhao
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
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12
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Pourtabrizi M, Shahtahmassebi N, Kompany A, Sharifi S. Effect of Microemulsion Structure on Fluorescence and Nonlinear Optical Properties of Rhodamine 6G. J Fluoresc 2017; 28:323-336. [DOI: 10.1007/s10895-017-2195-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 11/07/2017] [Indexed: 10/18/2022]
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13
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Maiti C, Dhara D. Energy-Transfer Phenomena in Thermoresponsive and pH- Switchable Fluorescent Diblock Copolymer Vesicles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12130-12139. [PMID: 28984463 DOI: 10.1021/acs.langmuir.7b01891] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We describe the development of a polymeric vesicle that not only selectively fluoresces at low pH, a condition prevailing in cancer cells, but also can potentially monitor the thermoresponsive release of a drug even if the drug is nonfluorescent. The developed fluorescence resonance energy transfer (FRET)-based thermoresponsive vesicular nanocarriers are composed of a new poly(PEGMA)-b-poly(NIPA-r-R6GMED) block copolymer, which undergoes pH-switchable superior turn on-off fluorescence characteristics. The block copolymer was synthesized using the RAFT technique, and its solution properties and self-assembly behavior were investigated by turbidity measurements, fluorescence spectroscopy, 1H NMR, dynamic light scattering, and transmission electron microscopy. The block copolymer self-assembled to form nanostructured vesicles above the critical aggregation temperature under physiologically relevant conditions. Steady-state and time-resolved fluorescence spectroscopy were utilized to study the FRET process between encapsulated hydrophobic guest C-153 (donor) and polymer-bound R6GMED units (acceptor) in the thermoresponsive vesicles. The FRET rate and efficiency were found to vary as a result of the pH-dependent changes in the quantum yield of the acceptor molecules. The occurrence of a highly efficient FRET in this polymeric vesicular nanocarrier at acidic pH, a condition similar to the cytoplasm and cell nucleus in leukemic tissues, and the ability to encapsulate hydrophilic and hydrophobic molecules and their temperature-controlled release make it potentially useful in imaging guided real-time monitoring of drug-delivery vehicles.
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Affiliation(s)
- Chiranjit Maiti
- Department of Chemistry, Indian Institute of Technology , Kharagpur, West Bengal 721302, India
| | - Dibakar Dhara
- Department of Chemistry, Indian Institute of Technology , Kharagpur, West Bengal 721302, India
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Majhi D, Sarkar M. Probing the microscopic structural organization of neat ionic liquids (ILs) and ionic liquid-based gels through resonance energy transfer (RET) studies. Phys Chem Chem Phys 2017; 19:23194-23203. [DOI: 10.1039/c7cp04728b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the aim to understand the role of the ionic constituents of ionic liquids (ILs) in their structural organization, resonance energy transfer (RET) studies between ionic liquids (donor) and rhodamine 6G (acceptor) have been investigated.
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Affiliation(s)
- Debashis Majhi
- School of Chemical Sciences
- National Institute of Science Education and Research
- HBNI
- Bhubaneswar
- India
| | - Moloy Sarkar
- School of Chemical Sciences
- National Institute of Science Education and Research
- HBNI
- Bhubaneswar
- India
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15
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Singh MK, Khan MF, Shweta H, Sen S. Probe-location dependent resonance energy transfer at lipid/water interfaces: comparison between the gel- and fluid-phase of lipid bilayer. Phys Chem Chem Phys 2017; 19:25870-25885. [DOI: 10.1039/c7cp03108d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effect of dielectric environment and lipid fluidity/rigidity in multi-chromophoric FRET from a series of donors to acceptors at lipid/water interfaces are monitored by tailored donor–acceptor pairs.
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Affiliation(s)
- Moirangthem Kiran Singh
- Spectroscopy Laboratory
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Mohammad Firoz Khan
- Spectroscopy Laboratory
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Him Shweta
- Spectroscopy Laboratory
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Sobhan Sen
- Spectroscopy Laboratory
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
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Rahdar A, Almasi-Kashi M. Dynamic and spectroscopic studies of nano-micelles comprising dye in water/ dioctyl sodium sulfosuccinate /decane droplet microemulsion at constant water content. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Kuchlyan J, Kundu N, sarkar N. Ionic liquids in microemulsions: Formulation and characterization. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.05.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Rahdar A, Almasi-Kashi M. Photophysics of Rhodamine B in the nanosized water droplets: A concentration dependence study. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.05.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Lépori CMO, Correa NM, Silber JJ, Falcone RD. How the cation 1-butyl-3-methylimidazolium impacts the interaction between the entrapped water and the reverse micelle interface created with an ionic liquid-like surfactant. SOFT MATTER 2016; 12:830-844. [PMID: 26542472 DOI: 10.1039/c5sm02421h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The behavior of the interfacial water entrapped in reverse micelles (RMs) formed by the ionic liquid-like surfactant 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (bmim-AOT) dissolved in benzene (or chlorobenzene) was investigated using noninvasive techniques such as dynamic light scattering (DLS), static light scattering (SLS), FT-IR and (1)H NMR. The DLS and SLS results reveal the formation of discrete spherical and non-interacting water droplets stabilized by the bmim-AOT surfactant. Moreover, since the droplet size increases as the W0 (W0 = [water]/[surfactant]) value increases, water interacts with the RM interface. From FT-IR and (1)H NMR data, a weaker water-surfactant interaction in bmim-AOT RMs in comparison with the RMs created by sodium 1,4-bis-2-ethylhexylsulfosuccinate (Na-AOT) is detected. Consequently, there are less water molecules interacting with the interface in bmim-AOT RMs, and their hydrogen bond network is not completely disrupted as they are in Na-AOT RMs. The results show how the nature of the new cation impacts the interaction between the entrapped water and the RM interface, modifying the interfacial water structure in comparison with the results known for Na-AOT.
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Affiliation(s)
- Cristian M O Lépori
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, C.P. X5804BYA Río Cuarto, Argentina.
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Roy A, Kundu N, Banik D, Sarkar N. Comparative Fluorescence Resonance Energy-Transfer Study in Pluronic Triblock Copolymer Micelle and Niosome Composed of Biological Component Cholesterol: An Investigation of Effect of Cholesterol and Sucrose on the FRET Parameters. J Phys Chem B 2015; 120:131-42. [PMID: 26672631 DOI: 10.1021/acs.jpcb.5b09761] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arpita Roy
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Niloy Kundu
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Debasis Banik
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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Bag SS, Jana S, Yashmeen A, De S. Triazolo-β-aza-ε-amino acid and its aromatic analogue as novel scaffolds for β-turn peptidomimetics. Chem Commun (Camb) 2015; 51:5242-5. [DOI: 10.1039/c4cc08414d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Triazolo-β-aza-ε-amino acid and its aromatic analogue (AlTAA/ArTAA) in the peptide backbone mark a novel class of conformationally constrained molecular scaffolds to induce β-turn conformations. This was demonstrated in a Leu-enkephalin analogue and in other designed peptides.
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Affiliation(s)
- Subhendu Sekhar Bag
- Bioorganic Chemistry Laboratory
- Department of Chemistry
- Indian Institute of Technology Guwahati
- North Guwhati-781039
- India
| | - Subhashis Jana
- Bioorganic Chemistry Laboratory
- Department of Chemistry
- Indian Institute of Technology Guwahati
- North Guwhati-781039
- India
| | - Afsana Yashmeen
- Bioorganic Chemistry Laboratory
- Department of Chemistry
- Indian Institute of Technology Guwahati
- North Guwhati-781039
- India
| | - Suranjan De
- Bioorganic Chemistry Laboratory
- Department of Chemistry
- Indian Institute of Technology Guwahati
- North Guwhati-781039
- India
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Bag SS, Jana S, Yashmeen A, Senthilkumar K, Bag R. Triazolyl-donor-acceptor chromophore-decorated unnatural amino acids and peptides: FRET events in a β-turn conformation. Chem Commun (Camb) 2014; 50:433-5. [PMID: 24253679 DOI: 10.1039/c3cc47488g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The β-turn conformation and FRET process were established in the designed tripeptide containing fluorescent triazolyl donor and acceptor-decorated unnatural amino acids separated by a natural alanine.
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Affiliation(s)
- Subhendu Sekhar Bag
- Bio-organic Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India.
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Banerjee C, Kuchlyan J, Banik D, Kundu N, Roy A, Ghosh S, Sarkar N. Interaction of gold nanoclusters with IR light emitting cyanine dyes: a systematic fluorescence quenching study. Phys Chem Chem Phys 2014; 16:17272-83. [DOI: 10.1039/c4cp02563f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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