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Vinod SM, Murugan Sreedevi S, Krishnan A, Perumal T, Chinnadurai R, Rajendran K. Interaction of an Aldose Sugar with Photoinduced Electron Transfer (PET) and Non-PET Based Acridinedione Dyes in Water: Hydrogen-bonding Evidences from Fluorescence Spectral Techniques Assisted by Molecular Docking Approach. J Fluoresc 2023; 33:471-486. [PMID: 36445509 DOI: 10.1007/s10895-022-03062-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/27/2022] [Indexed: 11/30/2022]
Abstract
Fluorescence spectral techniques aided by molecular docking (Mol.Doc) approach were employed in probing the molecular interactions existing between D-glucose and resorcinol based acridinedione (ADR) dyes. ADR dyes has been classified into PET and non-PET dyes based on the substitution in the 9th position of acridinedione ring structure. Addition of glucose to PET dye (ADR1) resulted in a decrease in the absorbance whereas to that of ADR2 dye (non-PET character in aqueous medium) resulted in a significant increase in the absorbance. The formation of an isosbestic point reveals the existence of a ground state interaction existing between the dye and sugar molecule. Addition of glucose to PET dye resulted in a drastic increase in the fluorescent enhancement (FE) and subsequent addition resulted in a marked decrease in the fluorescent intensity with no apparent shift of emission maximum. Interestingly, neither characteristic shift nor variation in emission intensity was observed in the case of ADR2 dye. Fluorescence lifetime studies of ADR1 dye in the presence of glucose illustrate the existence of multiple distinguishable micro environments of dye. Mol.Doc studies authenticate the co-existence of hydrogen bonding (HB) and hydrophobic interaction wherein the dye and sugar molecule acts as HB donor and acceptor resulting in a stable conformer. These conformers are governed predominantly by HB interactions. The nature of interaction of a simple sugar with ADR dyes are explored in depth by fluorescent techniques in coordination with docking studies is imparted in the present study.
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Affiliation(s)
- Seba Merin Vinod
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India
| | - Sangeetha Murugan Sreedevi
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India
| | - Anju Krishnan
- Department of Chemistry, Sathyabama Institute of Science and Technology, Tamil Nadu, Kamaraj Nagar, Semmancheri, Chennai, 600119, India
| | - Tamizhdurai Perumal
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India
| | - Raghupathi Chinnadurai
- Department of Chemistry, Sriram College of Arts and Science, Tamil Nadu, Perumalpattu, Tiruvallur, 602024, India
| | - Kumaran Rajendran
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India.
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Sreedevi Sangeetha M, Merin Vinod S, Anju K, Tamizhdurai P, Raghupathi C, Kumaran R. Photophysical and molecular docking approach on the interaction of water-soluble simple keto sugar with Acridinedione dyes. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract
Micro-/nanorobots (MNRs) can be autonomously propelled on demand in complex biological environments and thus may bring revolutionary changes to biomedicines. Fluorescence has been widely used in real-time imaging, chemo-/biosensing, and photo-(chemo-) therapy. The integration of MNRs with fluorescence generates fluorescent MNRs with unique advantages of optical trackability, on-the-fly environmental sensitivity, and targeting chemo-/photon-induced cytotoxicity. This review provides an up-to-date overview of fluorescent MNRs. After the highlighted elucidation about MNRs of various propulsion mechanisms and the introductory information on fluorescence with emphasis on the fluorescent mechanisms and materials, we systematically illustrate the design and preparation strategies to integrate MNRs with fluorescent substances and their biomedical applications in imaging-guided drug delivery, intelligent on-the-fly sensing and photo-(chemo-) therapy. In the end, we summarize the main challenges and provide an outlook on the future directions of fluorescent MNRs. This work is expected to attract and inspire researchers from different communities to advance the creation and practical application of fluorescent MNRs on a broad horizon.
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Affiliation(s)
- Manyi Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Xia Guo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Fangzhi Mou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Jianguo Guan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
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Bojesomo RS, Saleh N. Photoinduced Electron Transfer in Encapsulated Heterocycles by Cavitands. Photochem Photobiol 2021; 98:754-762. [PMID: 34865222 DOI: 10.1111/php.13571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/31/2021] [Accepted: 11/30/2021] [Indexed: 11/26/2022]
Abstract
Host-guest complexation of small heterocyclic (guest) and macrocyclic cavitands (hosts) organic molecules is still to date a very popular, inexpensive approach that bypasses the burdens of conventional covalent synthesis. Understanding the selection criteria of these chemicals is crucial to the design and potential applications of their supramolecular assemblies. This review surveys examples within the last 15 years (2005-2020) of supramolecular complexes in which the interacting photoinduced electron transfer (PET)-based chromophore and quencher fragments are commonly used in the market with reported CAS numbers. It appears from this survey that the supramolecular effects can be directed to specifically disrupt PET when the nonemissive macrocycles separately encapsulate the fluorescent acceptor or donor molecules, among other specific factors, such as when inducing conformational changes or pKa shift of the donor. On the contrary, synergetic encapsulation of both donor and acceptor molecules, formation of ternary self-assembly at the rim or encapsulation of one component while grafting the other onto the macrocycle, among other specific factors such as the modulation of the excited-state structure of donor, will lead to the enhancement of PET process. In the event the donor or acceptor molecules have multitopic structures, the PET process can repeatedly be switched on and off. It is generally concluded that understanding the criteria for the combination of these available products for the purpose of manipulating their PET efficiency should pave the way for the facile alternative generation of new noncovalently bonded host-guest supramolecular assemblies with a more specific design tailored for more advanced, diverse and economic applications such as chemical sensing, molecular gates, drug delivery and biolabeling.
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Affiliation(s)
- Rukayat S Bojesomo
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain, 15551, United Arab Emirates
| | - Na'il Saleh
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain, 15551, United Arab Emirates.,National Water and Energy Center, United Arab Emirates University, Al Ain, 15551, United Arab Emirates
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Anupurath S, Rajaraman V, Gunasekaran S, Krishnan A, Sreedevi SM, Vinod SM, Dakshinamoorthi BM, Rajendran K. Electrochemical Investigation and Molecular Docking Techniques on the Interaction of Acridinedione Dyes with Water-Soluble Nonfluorophoric Simple Amino Acids. ACS OMEGA 2021; 6:30932-30941. [PMID: 34841136 PMCID: PMC8613813 DOI: 10.1021/acsomega.1c03172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Electrochemical studies of resorcinol-based acridinedione (AD) dyes with nonfluorophoric simple amino acids, glycine, alanine, and valine, were carried out in water. AD probes are classified into photoinduced electron transfer (PET) and non-PET-based dyes, wherein the electrochemical properties and photophysical and photochemical behavior vary significantly based on the nature of substituent groups and the nature of the solute. The oxidation potential of PET dye (ADR1) to that of non-PET-based dye (ADR2) differs significantly such that the addition of amino acids results in a shift of the oxidation peak to a less positive potential and the reduction peak to a lesser negative potential. The extent of shift of oxidation and reduction potential in PET dye is more pronounced than that of non-PET dye on the addition of valine rather than glycine. The variation in the shift is attributed to the presence of an electron-donating moiety (OCH3) group in the ninth position of ADR1 dye. Consequently, the quenching of fluorescence is observed in ADR2 with non fluorophoric amino acids that are authenticated by the shift of the anodic and cathodic peaks toward a lesser positive potential. Molecular docking (MD) studies of PET and non-PET dye with amino acids portray that neither hydrophobic interactions nor electrostatic or weak interactions such as van der Waals and pi-pi interactions govern the electrochemical nature of dye on the addition of amino acids. Furthermore, the formation of a conventional hydrogen bond between dye and amino acid is established from MD studies. The existence of dye-water-amino acid competitive hydrogen-bonding interactions is presumably well-oriented throughout the aqueous phase as observed through photophysical studies which support our electrochemical investigation.
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Affiliation(s)
- Sumita Anupurath
- Department
of Chemistry, Anna Adarsh College for Women, University of Madras, Chennai, Tamil Nadu 600 040, India
| | - Vasanthi Rajaraman
- P.G
and Research Department of Chemistry, Dwaraka Doss Goverdhan Doss
Vaishnav College (Autonomous), University
of Madras, Chennai, Tamil Nadu 600 106, India
| | - Shoba Gunasekaran
- Department
of Biotechnology, Dwaraka Doss Goverdhan Doss Vaishnav (Autonomous), University of Madras, Chennai, Tamil Nadu 600
106, India
| | - Anju Krishnan
- Department
of Chemistry, Anna Adarsh College for Women, University of Madras, Chennai, Tamil Nadu 600 040, India
| | - Sangeetha Murugan Sreedevi
- P.G
and Research Department of Chemistry, Dwaraka Doss Goverdhan Doss
Vaishnav College (Autonomous), University
of Madras, Chennai, Tamil Nadu 600 106, India
| | - Seba Merin Vinod
- P.G
and Research Department of Chemistry, Dwaraka Doss Goverdhan Doss
Vaishnav College (Autonomous), University
of Madras, Chennai, Tamil Nadu 600 106, India
| | | | - Kumaran Rajendran
- Department
of Biotechnology, Dwaraka Doss Goverdhan Doss Vaishnav (Autonomous), University of Madras, Chennai, Tamil Nadu 600
106, India
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Krishnan A, Viruthachalam T, Rajendran K. A fluorescence approach on the investigation of urea derivatives interaction with a non-PET based acridinedione dye-beta Cyclodextrin (β-CD) complex in water: Hydrogen-bonding interaction or hydrophobic influences or combined effect? SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:118990. [PMID: 33038856 DOI: 10.1016/j.saa.2020.118990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 09/08/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
Photophysical studies of resorcinol based acridinedione dyes with beta Cyclodextrin (β-CD) in the presence of urea (U) and tetramethylurea (TMU) were carried out in water. A marked variation in the absorption spectra of dye-β-CD complex was found to be more significant in the case of U rather in TMU. Interestingly, the role of urea on the excited state behavior of dye-β-CD complex is found to be entirely different from that of TMU. The formation of urea-water hydrogen-bonding self assemblies and creation of microspheres of varying environment results in an effective displacement of dye from the hydrophobic nanocavity of β-CD. On the contrary, the dye prefers a more confined hydrophobic micro environment in the presence of TMU. The nature of urea derivative, hydrogen-bonding of urea-water assemblies and hydrophobic influences of methyl moieties in urea molecular framework governs the stability and also the dissociation of dye-β-CD complex. The displacement of dye from the environment of the sugar molecule by urea derivatives is established from fluorescence studies wherein the variation in the spectral behavior of non-PET based dye-β-CD complex is found to be entirely different from that of PET dye. Both hydrogen-bonding along with hydrophobic interactions influences the excited state properties of the both PET and non-PET based acridinedione dyes are elucidated through fluorescence spectral studies. The extent of binding and the microenvironment of the dye in the presence of β-CD and urea are established through molecular docking and fluorescence anisotropy studies.
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Affiliation(s)
- Anju Krishnan
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to the University of Madras, Chennai), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600 106, Tamil Nadu, India
| | - Thiagarajan Viruthachalam
- Photonics and Biophotonics Lab, School of Chemistry, Bharathidasan University, Palkalaiperur, Tiruchirappalli 620 024, Tamil Nadu, India
| | - Kumaran Rajendran
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to the University of Madras, Chennai), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600 106, Tamil Nadu, India.
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Sumita A, Shoba G, Thamarai Selvan R, Anju K, Balakumaran MD, Kumaran R. Photophysical and molecular docking studies of photoinduced electron transfer (PET) and non-PET based fluorophores of acridinedione derivatives with a glycoprotein: Ovalbumin. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Anupurath S, Krishnan A, Namasivayam D, Rajaraman V, Rajendran K. Competitive hydrogen bonding influences of fluorophore- urea-adenine system in water: Photophysical and photochemical approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 237:118409. [PMID: 32361320 DOI: 10.1016/j.saa.2020.118409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Photophysical and photochemical investigation of photoinduced electron transfer (PET)-based acridinedione dye (ADR1) with urea in the presence of a nitrogenous base (adenine) were carried out in water. Urea suppresses the PET resulting in a fluorescence enhancement and the extent of binding is correlated and governed by the number of urea molecules surrounding the close vicinity of dye. On the contrary, adenine forms a true 1:2 complex with dye. Presence of adenine in dye-urea microenvironment results in the displacement of dye from the vicinity of urea molecules. The stability of dye-urea network in the presence of adenine reveals that the microenvironment of dye is governed and influenced by both urea and adenine. Introduction of adenine to dye-urea results in the formation of several hydrogen bonding assemblies that are competitive and influences the excited state characteristics of ADR1 dye. The micro assemblies comprise dye-urea (DU), dye-adenine (DA), urea-adenine (UA), urea-water (UW), urea-urea (UU), and adenine-water (AW) framework and the existence of several competitive hydrogen bonding results in a large variation in fluorescence properties of ADR1 dye. The presence of several assemblies also signifies that no confined phase selectively of DU or DA assemblies exist in any stoichiometric proportion in the aqueous phase. The binding constant, the variation in the fluorescence lifetime and its relative amplitude of DA in the presence of urea authenticate that the binding nature of dye-urea-adenine (DUA) is dependent on the several hydrogen bonding assemblies that coexist at any concentration. The extent of hydrogen bonding of DA is found to be entirely different from that of urea. Further, urea resulted in changes in the transient absorption peak of dye with a large variation in lifetime and shift of the transient absorption peaks. Fluorescence spectral techniques are used as an efficient tool in elucidating the binding nature of DU framework in the presence of non-fluorescent hydrogen-bonding solute like adenine.
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Affiliation(s)
- Sumita Anupurath
- Department of Chemistry, Anna Adarsh College for Women (Affiliated to University of Madras), Anna Nagar, Chennai 600 040, Tamil Nadu, India
| | - Anju Krishnan
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to University of Madras),833, GokulBagh, E.V.R.Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | | | - Vasanthi Rajaraman
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to University of Madras),833, GokulBagh, E.V.R.Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Kumaran Rajendran
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to University of Madras),833, GokulBagh, E.V.R.Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India.
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Anju K, Sumita A, Gayathri S, Vasanthi R, Rajendran K. Fluorescence Spectral Studies on the Interaction of Alanine and Valine with Resorcinol-Based Acridinedione Dyes in Aqueous Solution: A Comparative Study with Glycine. ACS OMEGA 2019; 4:12357-12365. [PMID: 31460353 PMCID: PMC6682030 DOI: 10.1021/acsomega.9b01011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/26/2019] [Indexed: 06/10/2023]
Abstract
Photophysical studies were carried out for simple amino acids like alanine and valine with resorcinol-based aqueous acridinedione (ADDR) dyes. ADDR dyes exhibit interesting excited-state characteristics on altering the substituents at the 9th and 10th sites (Scheme 1). The longest-wavelength absorption maxima remain the same on adding the amino acids to the fluorophore, whereas the excited-state behavior varies significantly mostly based on the nature of the substituent at the 9th position. The absence of fluorescence enhancement was observed with addition of β-alanine, l-alanine, and l-valine to ADDR1 dye (photoinduced electron transfer, PET), whereas addition of glycine exhibits enhancement accompanied with a shift toward a longer-wavelength region. Interestingly, the addition of amino acids to non-PET dyes results in a fluorescence quenching accompanied with a larger shift toward the shorter-wavelength region. The properties of fluorophore and nonfluorophore dyes in the presence of alanine or valine are found to be entirely different from those of glycine. The interaction of alanine with ADDR dyes is predominantly through H-bonding, but the structural aspects of H-bonding interactions of alanine and water are completely different from those of glycine and water. The time-correlated single-photon counting method portrays the existence of fluorophore in two distinguishable microenvironments in the presence of amino acids. The fluorescence spectral technique used as a tool in elucidating the mode of interaction of dye with neutral amino acids in aqueous solution is illustrated in the present study.
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Affiliation(s)
- Krishnan Anju
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Anupurath Sumita
- Department
of Chemistry, Anna Adarsh College for Women
College, Anna Nagar, Chennai 600040, Tamil Nadu, India
| | - Somasundaram Gayathri
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Rajaraman Vasanthi
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Kumaran Rajendran
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
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Sowntharya C, Gayathri S, Dhenadayalan N, Vasanthi R, Vanjinathan M, Kumaran R. Photophysical studies of a food hydrocolloid, Gum Arabic with resorcinol based acridinedione dyes in water. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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A dual role of phenylboronic acid as a receptor for carbohydrates as well as a quencher for neighboring pyrene fluorophore. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.11.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lee J, Lohani CR, Choi EK, Lee KH, Kim C. Self-assembled dendron nanotubes with a surface peptide–fluorophore conjugate as a sensory vehicle. NEW J CHEM 2013. [DOI: 10.1039/c3nj00316g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Lee J, Park S, Lohani CR, Lee KH, Kim C. Fluorescent Dendron-Cyclodextrin Nanotubes with Surface Peptide Spacer as a Recyclable Sensory Platform. Chemistry 2012; 18:7351-6. [DOI: 10.1002/chem.201200525] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Indexed: 11/12/2022]
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Dsouza RN, Pischel U, Nau WM. Fluorescent dyes and their supramolecular host/guest complexes with macrocycles in aqueous solution. Chem Rev 2011; 111:7941-80. [PMID: 21981343 DOI: 10.1021/cr200213s] [Citation(s) in RCA: 797] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Roy N Dsouza
- School of Engineering and Science, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
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Kumaran R, Ramamurthy P. Photophysical studies on the interaction of formamide and alkyl substituted amides with photoinduced electron transfer (PET) based acridinedione dyes in water. J Fluoresc 2011; 21:2165-72. [PMID: 21769603 DOI: 10.1007/s10895-011-0918-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 07/04/2011] [Indexed: 10/18/2022]
Abstract
Interaction of photoinduced electron transfer (PET) based acridinedione dye (ADR 1) with amides like formamide, acetamide and dimethylformamide (DMF) were investigated by fluorescence spectral techniques. A fluorescence enhancement accompanied with a blue shift in the emission maximum was observed on the addition of amides to ADR 1 dye, which possess C(6)H(4)(p-OCH(3)) in the 9th position of the basic acridinedione ring. The extent of fluorescence enhancement and the blue shift in the emission maximum of ADR 1 dye is of the order of DMF > acetamide > formamide. DMF, which is more hydrophobic and less polar, results in a higher extent of fluorescence enhancement and a larger shift in the emission maximum towards the blue region. On the addition of amides, the ADR 1 dye prefers to orient towards a more hydrophobic phase surrounded by more number of amide molecules. The fluorescence enhancement of ADR 1 dye is attributed to the suppression of PET process occurring through space. The influence of the hydrophobic nature and the polarity of the amides on the excited state properties of acridinedione dyes are elucidated by steady-state and time resolved fluorescence measurements.
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Affiliation(s)
- R Kumaran
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai 600 113, India
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Tablet C, Matei I, Hillebrand M. Experimental study of the interaction of some coumarin derivatives with aniline in Triton-X-100 micelles. J Mol Liq 2011. [DOI: 10.1016/j.molliq.2011.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Fluorescence Spectroscopic Evidence for Hydrogen Bonding and Deprotonation Equilibrium between Fluoride and a Thiourea Derivative. Chemistry 2010; 16:13271-7. [DOI: 10.1002/chem.201000837] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Photophysical Studies on the Interaction of Acridinedione Dyes with Universal Protein Denaturant: Guanidine Hydrochloride. J Fluoresc 2010; 20:993-1002. [DOI: 10.1007/s10895-010-0646-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2008] [Accepted: 03/18/2010] [Indexed: 10/19/2022]
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Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Specific Ca2+Fluorescent Sensor: Signaling by Conformationally Induced PET Suppression in a Bichromophoric Acridinedione. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900570] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sohajda T, Béni S, Varga E, Iványi R, Rácz Á, Szente L, Noszál B. Characterization of aspartame–cyclodextrin complexation. J Pharm Biomed Anal 2009; 50:737-45. [DOI: 10.1016/j.jpba.2009.06.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Revised: 06/04/2009] [Accepted: 06/05/2009] [Indexed: 11/28/2022]
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21
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Jin R, Zhang J. Theoretical investigation of chemosensor for fluoride anion based on amidophthalimide derivatives. Theor Chem Acc 2009. [DOI: 10.1007/s00214-009-0603-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Thiagarajan V, Ramamurthy P. Dual Fluorescence in a Schiff Base Derived from an Acridinedione Dye. Excited State Intramolecular Proton Transfer. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.1307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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