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Panda S, Kundu K, Singh AP, Senapati S, Gardas RL. Understanding Differential Interaction of Protic and Aprotic Ionic Liquids inside Molecular Confinement. J Phys Chem B 2017; 121:9676-9687. [DOI: 10.1021/acs.jpcb.7b07945] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Somenath Panda
- Department
of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - 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 Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
- Department
of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, 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
| | - Ramesh L. Gardas
- Department
of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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2
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Modulation of anionic reverse micellar interface with non-ionic surfactants can regulate enzyme activity within the micellar waterpool. Colloid Polym Sci 2016. [DOI: 10.1007/s00396-016-3829-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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3
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Cong L, Yin H, Shi Y, Jin M, Ding D. Different mechanisms of ultrafast excited state deactivation of coumarin 500 in dioxane and methanol solvents: experimental and theoretical study. RSC Adv 2015. [DOI: 10.1039/c4ra09773d] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of hydrogen bonding on the intermolecular photoinduced ICT and TICT processes for coumarin 500 has been demonstrated, and a reliable mechanism has been revealed to explain the unusual behavior of C500 in dioxane and methanol.
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Affiliation(s)
- Lin Cong
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Hang Yin
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Ying Shi
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Mingxing Jin
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Dajun Ding
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
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4
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Patra A, Luong TQ, Mitra RK, Havenith M. The influence of charge on the structure and dynamics of water encapsulated in reverse micelles. Phys Chem Chem Phys 2014; 16:12875-83. [DOI: 10.1039/c4cp00386a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Das A, Patra A, Mitra RK. Do the Physical Properties of Water in Mixed Reverse Micelles Follow a Synergistic Effect: A Spectroscopic Investigation. J Phys Chem B 2013; 117:3593-602. [DOI: 10.1021/jp3102833] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arindam Das
- Unit for Nano Science & Technology, Department of Chemical Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | - Animesh Patra
- Unit for Nano Science & Technology, Department of Chemical Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | - Rajib Kumar Mitra
- Unit for Nano Science & Technology, Department of Chemical Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098, India
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6
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Schmidt J, Prignitz R, Peschka D, Münch A, Wagner B, Bänsch E, Peukert W. Conductivity in nonpolar media: Experimental and numerical studies on sodium AOT–hexadecane, lecithin–hexadecane and aluminum(III)-3,5-diisopropyl salicylate–hexadecane systems. J Colloid Interface Sci 2012; 386:240-51. [DOI: 10.1016/j.jcis.2012.07.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 07/17/2012] [Accepted: 07/18/2012] [Indexed: 11/24/2022]
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7
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Rakshit S, Saha R, Verma PK, Pal SK. Role of Solvation Dynamics in Excited State Proton Transfer of 1-Naphthol in Nanoscopic Water Clusters Formed in a Hydrophobic Solvent. Photochem Photobiol 2012; 88:851-9. [DOI: 10.1111/j.1751-1097.2012.01140.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Electrostatic Pushing Effect: A Prospective Strategy for Enhanced Drug Delivery. J Phys Chem B 2010; 114:12541-8. [DOI: 10.1021/jp1049099] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Synthesis and spectroscopy of novel branched fluorescent dyes containing benzophenone parts and the possibility as fluorescence probes. J Fluoresc 2010; 21:149-59. [PMID: 20585975 DOI: 10.1007/s10895-010-0699-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Accepted: 06/22/2010] [Indexed: 10/19/2022]
Abstract
This paper describes a new fluorescent family of branched dyes containing benzophenone unit including 4-N, N-diphenylamino-4'-phenacyl-stilbene (C1), 4,4'-di(4-benzoylphenylethylene)yl-triphenylamine (C2) and 4,4',4″-tri(4-benzoylphenylethylene)yl-triphenylamine (C3). Benzophenone part is coupled with core through C-C double bond. The chemical structures of the derivatives are characterized with (1)H and (13)C nuclear magnetic resonance and elemental analysis. Strong π-π stacking interactions are discovered with the analysis of the X-ray crystallographic data of C1. The absorption maxima and emission maxima of the derivatives exhibit gradual bathochromic shift from C1 to C3. The optical density of C1, C2 and C3 are shown to be related to the number of branches. The changes of dipole moments between the excited and ground states for C1, C2 and C3 were estimated to be 4.356, 8.091 and 8.479 Derby, respectively by Lippert equation, confirming that the internal charge transfer (ICT) dominates the process of excited singlet state. The possibility as fluorescence probes of the derivatives on the estimation of what region of micelles interacting with samples was evaluated.
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10
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Bose D, Sarkar D, Girigoswami A, Mahata A, Ghosh D, Chattopadhyay N. Photophysics and rotational relaxation dynamics of cationic phenazinium dyes in anionic reverse micelles: Effect of methyl substitution. J Chem Phys 2009; 131:114707. [DOI: 10.1063/1.3225476] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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11
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George S, Kumbhakar M, Singh PK, Ganguly R, Nath S, Pal H. Fluorescence spectroscopic investigation to identify the micelle to gel transition of aqueous triblock copolymer solutions. J Phys Chem B 2009; 113:5117-27. [PMID: 19317476 DOI: 10.1021/jp809826c] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Steady-state and time-resolved fluorescence anisotropy measurements using probes coumarin 153 (C153) and 4-heptadecylumbelliferon (HUF) have been carried out to understand the micelle to gel transition of an aqueous triblock copolymer P123 ((EO)(20)-(PO)(70)-(EO)(20)) (EO = ethylene oxide; PO = propylene oxide) solution. Anisotropy results with a normal fluorescent probe, C153, do not show a characteristic change due to the micelle to gel transition. However, the probe HUF having a long hydrocarbon chain that helps its strong association with the micelle shows an increase in anisotropy above the sol-gel transition point. This difference has been explained as invoking a substantial contribution from the micellar structural fluctuations to the depolarization of HUF as its hydrocarbon chain is embedded in the micellar structure, which is not sensed significantly by the normal probe C153. That the extent of change in anisotropy for HUF upon gelation is not that large is possibly caused by the collective motion of the physically interconnected nodes, as observed from the dynamic light scattering studies, which acts in favor of a relatively faster depolarization in the gel phase. Similar studies in other copolymers, such as P85 ((EO)(26)-(PO)(40)-(EO)(26)) and F127 ((EO)(100)-(PO)(65)-(EO)(100)), further demonstrate the potential of probes latched with hydrocarbon chains in displaying a characteristic change for the micelle to gel transition which otherwise remains obscured for normal fluorescent probes.
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Affiliation(s)
- Sony George
- Chemistry Department, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695581, Bhabha Atomic Research Centre, Mumbai 400085, India
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12
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Mitra RK, Verma PK, Pal SK. Exploration of the Dynamical Evolution and the Associated Energetics of Water Nanoclusters Formed in a Hydrophobic Solvent. J Phys Chem B 2009; 113:4744-50. [DOI: 10.1021/jp8085705] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rajib Kumar Mitra
- Unit for Nano Science & Technology, Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Center for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | - Pramod Kumar Verma
- Unit for Nano Science & Technology, Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Center for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | - Samir Kumar Pal
- Unit for Nano Science & Technology, Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Center for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098, India
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13
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Verma PK, Makhal A, Mitra RK, Pal SK. Role of solvation dynamics in the kinetics of solvolysis reactions in microreactors. Phys Chem Chem Phys 2009; 11:8467-76. [DOI: 10.1039/b905573h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Mukhopadhyay M, Mandal A, Misra R, Banerjee D, Bhattacharyya SP, Mukherjee S. Nanopools Governing Proton Transfer in Diametrical Ways in the Ground and Excited State. J Phys Chem B 2008; 113:567-73. [DOI: 10.1021/jp804103h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Madhuri Mukhopadhyay
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, India, and Department of Physics, Shibpur Dinabandhu Institution (College), Shibpur, Howrah, India
| | - Abhijit Mandal
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, India, and Department of Physics, Shibpur Dinabandhu Institution (College), Shibpur, Howrah, India
| | - Ramprasad Misra
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, India, and Department of Physics, Shibpur Dinabandhu Institution (College), Shibpur, Howrah, India
| | - Debi Banerjee
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, India, and Department of Physics, Shibpur Dinabandhu Institution (College), Shibpur, Howrah, India
| | - Shankar Prasad Bhattacharyya
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, India, and Department of Physics, Shibpur Dinabandhu Institution (College), Shibpur, Howrah, India
| | - Samaresh Mukherjee
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, India, and Department of Physics, Shibpur Dinabandhu Institution (College), Shibpur, Howrah, India
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