1
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Pandey S, Singh H, Yadav A, Juneja S, Khokhar V, Trivedi S. Fluorescence Quenching of Dipyrenylalkanes by an Electron/Charge Acceptor. J Phys Chem B 2020; 124:2668-2675. [PMID: 32164415 DOI: 10.1021/acs.jpcb.0c00954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Compounds possessing two fluorophoric moieties may exhibit dual fluorescence, one characterizing the monomeric fluorophore unit and the other characterizing the intramolecular aggregate. Fluorescence quenching of two dipyrenylalkanes, 1,3-bis(1-pyrenyl)propane [1Py(3)1Py] and 1,10-bis(1-pyrenyl)decane [1Py(10)1Py] having different alkyl chains separating the two termini pyrenyl groups that are capable of forming an intramolecular excimer, by an electron/charge-accepting quencher, nitromethane, is investigated in four different solvents-nonpolar (cyclohexane (CH)), polar-aprotic (acetonitrile (ACN)), polar-protic (ethanol (EtOH)), and chlorinated (dichloromethane (DCM))-under ambient conditions. For a given probe in a solvent, fluorescence from the monomer and the intramolecular excimer are quenched with similar efficiencies; the efficiency of quenching is higher for the probe with the longer alkyl chain separating the two fluorophores. Quenching efficiency is significantly higher in chlorinated solvent DCM. The bimolecular quenching rate constants for intramolecular excimer, however, are either comparable or lower for the longer alkyl chain compound. It is suggested that, while the donor electronic excited-state energetics is more favorable for the long alkyl chain compound, the approach of the quencher to the intramolecular excimer appears to be hindered by the presence of a longer alkyl chain.
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Affiliation(s)
- Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Harmeet Singh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Anita Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shreya Juneja
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Vaishali Khokhar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shruti Trivedi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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2
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Danko M, Hrdlovič P, Brzezinski M, Duda A, Biela T. Real-time monitoring of stereocomplex formation of poly(l-lactide) and poly(d-lactide) decorated with a pyrene derivative as a fluorescence probe. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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3
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Yadav A, Pandey S. Excimer Formation Dynamics of Dipyrenyldecane in Structurally Different Ionic Liquids. J Phys Chem B 2017; 121:10922-10933. [PMID: 29131957 DOI: 10.1021/acs.jpcb.7b08329] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ionic liquids, being composed of ions alone, may offer alternative pathways for molecular aggregation. These pathways could be controlled by the chemical structure of the cation and the anion of the ionic liquids. Intramolecular excimer formation dynamics of a bifluorophoric probe, 1,3-bis(1-pyrenyl)decane [1Py(10)1Py], where the fluorophoric pyrene moieties are separated by a long decyl chain, is investigated in seven different ionic liquids in 10-90 °C temperature range. The long alkyl separator allows for ample interaction with the solubilizing milieu prior to the formation of the excimer. The ionic liquids are composed of two sets, one having four ionic liquids of 1-butyl-3-methylimidazolium cation ([bmim+]) with different anions and the other having four ionic liquids of bis(trifluoromethylsulfonyl)imide anion ([Tf2N-]) with different cations. The excimer-to-monomer emission intensity ratio (IE/IM) is found to increase with increasing temperature in sigmoidal fashion. Chemical structure of the ionic liquid controls the excimer formation efficiency, as IE/IM values within ionic liquids with the same viscosities are found to be significantly different. The excited-state intensity decay kinetics of 1Py(10)1Py in ionic liquids do not adhere to a simplistic Birk's scheme, where only one excimer conformer forms after excitation. The apparent rate constants of excimer formation (ka) in highly viscous ionic liquids are an order of magnitude lower than those reported in organic solvents. In general, the higher the viscosity of the ionic liquid, the more sensitive is the ka to the temperature with higher activation energy, Ea. The trend in Ea is found to be similar to that for activation energy of the viscous flow (Ea,η). Stokes-Einstein relationship is not followed in [bmim+] ionic liquids; however, with the exception of [choline][Tf2N], it is found to be followed in [Tf2N-] ionic liquids suggesting the cyclization dynamics of 1Py(10)1Py to be diffusion-controlled and to depend on the viscosity of the ionic liquid irrespective of the identity of the cation. The dependence of ionic liquid structure on cyclization dynamics to form intramolecular excimer is amply highlighted.
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Affiliation(s)
- Anita Yadav
- Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
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4
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Biswal B, Pal A, Bag B. Two-step FRET mediated metal ion induced signalling responses in a probe appended with three fluorophores. Dalton Trans 2017. [DOI: 10.1039/c7dt01592e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tri-fluorophore appended Tren receptor based probe exhibited chelation induced ratiometric fluorescence signalling through a two-step FRET process; enhancement of FAn→ FRhenergy transfer efficiency through an FNBDintermediate was observed.
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Affiliation(s)
- Biswonath Biswal
- Colloids and Materials Chemistry Department
- CSIR-Institute of Minerals and Materials Technology
- Bhubaneswar-751 013
- India
| | - Ajoy Pal
- Colloids and Materials Chemistry Department
- CSIR-Institute of Minerals and Materials Technology
- Bhubaneswar-751 013
- India
| | - Bamaprasad Bag
- Colloids and Materials Chemistry Department
- CSIR-Institute of Minerals and Materials Technology
- Bhubaneswar-751 013
- India
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Graff BM, Lamont DN, Parker MFL, Bloom BP, Schafmeister CE, Waldeck DH. Through-Solvent Tunneling in Donor–Bridge–Acceptor Molecules Containing a Molecular Cleft. J Phys Chem A 2016; 120:6004-13. [DOI: 10.1021/acs.jpca.6b05624] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- B. M. Graff
- Chemistry
Department, University of Pittsburgh, Pittsburgh Pennsylvania 15260, United States
| | - D. N. Lamont
- Chemistry
Department, University of Pittsburgh, Pittsburgh Pennsylvania 15260, United States
| | - M. F. L. Parker
- Chemistry
Department, Temple University, Philadelphia, Pennsylvania, United States
| | - B. P. Bloom
- Chemistry
Department, University of Pittsburgh, Pittsburgh Pennsylvania 15260, United States
| | - C. E. Schafmeister
- Chemistry
Department, Temple University, Philadelphia, Pennsylvania, United States
| | - D. H. Waldeck
- Chemistry
Department, University of Pittsburgh, Pittsburgh Pennsylvania 15260, United States
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6
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Safin DA, Babashkina MG, Mitoraj MP, Kubisiak P, Robeyns K, Bolte M, Garcia Y. An intermolecular pyrene excimer in the pyrene-labeled N-thiophosphorylated thiourea and its nickel(ii) complex. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00298f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
(1-pyrene)NHC(S)NHP(S)(OiPr)2 (HL) and its NiII complex ([NiL2]) have been synthesized. Both HL and [NiL2] were found to be emissive in solution of CH2Cl2, which is due to the concentration dependent emission of the pyrene monomer and excimer.
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Affiliation(s)
- Damir A. Safin
- Institute of Condensed Matter and Nanosciences
- Molecules
- Solids and Reactivity (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - Maria G. Babashkina
- Institute of Condensed Matter and Nanosciences
- Molecules
- Solids and Reactivity (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - Mariusz P. Mitoraj
- Department of Theoretical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Piotr Kubisiak
- Department of Theoretical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences
- Molecules
- Solids and Reactivity (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - Michael Bolte
- Institut für Anorganische Chemie J.-W.-Goethe-Universität
- Frankfurt/Main
- Germany
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences
- Molecules
- Solids and Reactivity (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
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Yadav A, Kurur ND, Pandey S. Intramolecular Excimer Formation Dynamics of 1,3-Bis-(1-pyrenyl)propane within 1-Butyl-3-methylimidazolium Hexafluorophosphate and Its Polyethylene Glycol Mixtures. J Phys Chem B 2015; 119:13367-78. [DOI: 10.1021/acs.jpcb.5b07282] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anita Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Narayanan D. Kurur
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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8
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Lohar S, Safin DA, Sengupta A, Chattopadhyay A, Matalobos JS, Babashkina MG, Robeyns K, Mitoraj MP, Kubisiak P, Garcia Y, Das D. Ratiometric sensing of lysine through the formation of the pyrene excimer: experimental and computational studies. Chem Commun (Camb) 2015; 51:8536-9. [DOI: 10.1039/c5cc01359c] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lysine assisted ratiometric monomer to excimer conversion of pyrene derivatives allows intracellular lysine detections.
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Affiliation(s)
- Sisir Lohar
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Damir A. Safin
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve
- Belgium
| | - Archya Sengupta
- Department of Zoology
- Visva Bharati University
- Santiniketan
- India
| | | | | | - Maria G. Babashkina
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve
- Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve
- Belgium
| | - Mariusz P. Mitoraj
- Department of Theoretical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Piotr Kubisiak
- Department of Theoretical Chemistry
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Cracow
- Poland
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve
- Belgium
| | - Debasis Das
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
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9
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Biswal B, Bag B. Switching selectivity between Pb2+ and Hg2+ ions through variation of substituents at xanthene end; ‘turn-on’ signalling responses by FRET modulation. RSC Adv 2014. [DOI: 10.1039/c4ra04152f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Substitution at amino groups attached to the xanthene core modulates the stereo-electronic situation to switch selectivity; a FRET mediated signalling with a distinctive coupling of fluorophores.
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Affiliation(s)
- Biswonath Biswal
- Colloids and Materials Chemistry Department
- Academy of Scientific and Innovative Research
- CSIR-Institute of Minerals and Materials Technology
- Bhubaneswar-751 013, India
| | - Bamaprasad Bag
- Colloids and Materials Chemistry Department
- Academy of Scientific and Innovative Research
- CSIR-Institute of Minerals and Materials Technology
- Bhubaneswar-751 013, India
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Fowler MA, Duhamel J, Bahun GJ, Adronov A, Zaragoza-Galán G, Rivera E. Studying Pyrene-Labeled Macromolecules with the Model-Free Analysis. J Phys Chem B 2012. [DOI: 10.1021/jp307161c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael A. Fowler
- Institute
of Polymer Research,
Waterloo Institute of Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, Ontario
N2L 3G1, Canada
| | - Jean Duhamel
- Institute
of Polymer Research,
Waterloo Institute of Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, Ontario
N2L 3G1, Canada
| | - Greg J. Bahun
- Department of Chemistry and the Brockhouse
Institute for Materials Research, McMaster University, Hamilton, Canada
| | - Alex Adronov
- Department of Chemistry and the Brockhouse
Institute for Materials Research, McMaster University, Hamilton, Canada
| | - Gerardo Zaragoza-Galán
- Instituto de Investigaciones
en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 D.F. México
| | - Ernesto Rivera
- Instituto de Investigaciones
en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 D.F. México
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12
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Zhang G, Xu S, Zestos AG, Evans RE, Lu J, Fraser CL. An easy method to monitor lactide polymerization with a boron fluorescent probe. ACS APPLIED MATERIALS & INTERFACES 2010; 2:3069-3074. [PMID: 20942431 DOI: 10.1021/am1005783] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Fluorescence spectroscopy has been widely used to monitor different polymer processes such as polymerization kinetics, chain entanglements, and thermal transitions. The solvent-free controlled ring-opening polymerization (ROP) of lactide is significant both commercially and for research; thus, monitoring this process with a simple fluorescence method can be very useful. Here, a fluorescent dye, difluoroboron 4-methoxydibenzoylmethane (BF(2)dbmOMe) is employed to probe lactide bulk ROP by measuring the emission from solidified reaction aliquots at room temperature. It was found that, through the course of polymerization, the fluorescence of BF(2)dbmOMe in the solid-state aliquots exhibited a systematic shift from yellow to green and then to blue, accompanied by a gradual reduction in the decay lifetime. The fluorescence color change is sensitive to the monomer percent conversion, not the polymer molecular weight. On the basis of these observations and experimental data, we propose that the long-wavelength emission with perceivably longer lifetimes arises from BF(2)dbmOMe dye aggregates (ground and/or excited states), while the dissolved individual dye molecules are responsible for the blue fluorescence with a shorter lifetime. This demonstration of the utility of BF(2)dbmOMe as a fluorescent probe for lactide polymerization could have important practical implications.
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Affiliation(s)
- Guoqing Zhang
- Departments of Chemistry and Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904, USA
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13
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Comparison of the long range polymer chain dynamics of polystyrene and cis-polyisoprene using polymers randomly labeled with pyrene. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.09.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Kumar M, Dhir A, Bhalla V. On-Off Switchable Binuclear Chemosensor Based on Thiacalix[4]crown Armed with Pyrene Moieties. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900506] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Jisha VS, Thomas AJ, Ramaiah D. Fluorescence Ratiometric Selective Recognition of Cu2+ Ions by Dansyl−Naphthalimide Dyads. J Org Chem 2009; 74:6667-73. [DOI: 10.1021/jo901164w] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vadakkancheril S. Jisha
- Photosciences and Photonics, Chemical Sciences and Technology Division National Institute for Interdisciplinary Science and Technology (NIIST) CSIR, Trivandrum 695 019, India
| | - Anu J. Thomas
- Photosciences and Photonics, Chemical Sciences and Technology Division National Institute for Interdisciplinary Science and Technology (NIIST) CSIR, Trivandrum 695 019, India
| | - Danaboyina Ramaiah
- Photosciences and Photonics, Chemical Sciences and Technology Division National Institute for Interdisciplinary Science and Technology (NIIST) CSIR, Trivandrum 695 019, India
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16
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Ingratta M, Duhamel J. Effect of Time on the Rate of Long Range Polymer Segmental Intramolecular Encounters. J Phys Chem B 2009; 113:2284-92. [DOI: 10.1021/jp8082858] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mark Ingratta
- Institute for Polymer Research, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
| | - Jean Duhamel
- Institute for Polymer Research, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
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17
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Ingratta M, Duhamel J. Effect of Viscosity on Long-Range Polymer Chain Dynamics in Solution Studied with a Fluorescence Blob Model. Macromolecules 2009. [DOI: 10.1021/ma8019738] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark Ingratta
- Institute for Polymer Research, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
| | - Jean Duhamel
- Institute for Polymer Research, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
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18
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Costa T, Seixas de Melo J, Burrows HD. Fluorescence Behavior of a Pyrene-End-Capped Poly(ethylene oxide) in Organic Solvents and in Dioxane−Water Mixtures. J Phys Chem B 2008; 113:618-26. [DOI: 10.1021/jp806555x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T. Costa
- Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - J. Seixas de Melo
- Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - H. D. Burrows
- Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
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Affiliation(s)
- Jong Seung Kim
- Department of Chemistry, Korea University, Seoul 136-701, Korea.
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Kim JS, Choi MG, Song KC, No KT, Ahn S, Chang SK. Ratiometric Determination of Hg2+ Ions Based on Simple Molecular Motifs of Pyrene and Dioxaoctanediamide. Org Lett 2007; 9:1129-32. [PMID: 17309275 DOI: 10.1021/ol070143r] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new podand-type dioxaoctanediamide-based chemosensor having two pyrene moieties was prepared, and its fluoroionophoric behaviors toward transition-metal ions were investigated. Pyrene-appended dioxaoctanediamide 1 showed a selective fluorescence quenching toward Hg2+ ions over other transition-metal ions in an aqueous methanol solution. Unique responses in pyrene monomer and excimer emissions allowed selective ratiometric determination of Hg2+ ions in aqueous environments, and the detection limit was found to be 1.6 x 10(-6) M. [structure: see text]
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Affiliation(s)
- Jun Soo Kim
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea
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Choi JK, Lee A, Kim S, Ham S, No K, Kim JS. Fluorescent Ratiometry of Tetrahomodioxacalix[4]arene Pyrenylamides upon Cation Complexation. Org Lett 2006; 8:1601-4. [PMID: 16597120 DOI: 10.1021/ol0602396] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text] C-1,2-alternate tetrahomodioxacalix[4]arene pyreneamides were synthesized. Pb(2+) coordination gave a quenched monomer and excimer fluorescence emission, while upon Ca(2+) ion binding, the receptor provides an enhanced excimer and declined monomer emission with ratiometric response. The excimer emission spectra changes are rationalized by frontier molecular orbitals that the effective Py-Py interaction induces emission intensity increases upon Ca(2+) ion complexation, whereas there is no such interaction observed upon Pb(2+) binding.
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Affiliation(s)
- Jung Kyu Choi
- Department of Chemistry, Institute of Nanosensor & Biotechnology, Dankook University, Seoul 140-714, Korea
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Kim HJ, Bok JH, Vicens J, Suh IH, Ko J, Kim JS. Luminescence behaviour of calix[4]arenes bearing an increasing number of appended-pyrenes. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.10.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lee SH, Kim SH, Kim SK, Jung JH, Kim JS. Fluorescence Ratiometry of Monomer/Excimer Emissions in a Space-Through PET System. J Org Chem 2005; 70:9288-95. [PMID: 16268601 DOI: 10.1021/jo051302s] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[Reaction: see text]. Fluorogenic calix[4]arenes (1 and 2) bearing a pendent ethyleneamine on their triazacrown rings, respectively, were synthesized in the cone conformation. Compared with 4, free 1 and 2 display a relatively weak emission, reflecting that a PET process from the pendent amine group (-CH2CH2NH2) to the fluorogenic pyrenes is mainly operated. Addition of various metal ions or anions to the solution of 1 or 2 reduces the PET because the pendent alkylamine takes part in the complexation, causing their fluorescence spectra to be changed. When Pb2+, a quenching metal ion, is added to 1 or 2, their pyrene monomer emission is enhanced with their excimer emission quenched, which is due to conformational changes of the facing carbonyl groups as well as to the participation of the ethyleneamine into the three-dimensional Pb2+ ion encapsulation. In contrast, upon addition of alkali metal ions to the 1 and 2, both monomer and excimer emissions are observed to increase, which is attributable to the CHEF effect and the retained conformations. For anion sensing, both 1 and 2 show a high selectivity for F- ions over other anions tested. When the F- ion is bound to 1 or 2 by hydrogen bonding between the amide NH of the triazacrown ring and F-, both their monomer and excimer emissions are weakened due to PET from the bound F- to the pyrene units.
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Affiliation(s)
- Suh Hyun Lee
- Department of Chemistry, Dankook University, Seoul 140-714, Korea, and Korea Basic Science Institute (KBSI), Daejeon 305-333, Korea
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Kim SK, Kim SH, Kim HJ, Lee SH, Lee SW, Ko J, Bartsch RA, Kim JS. Indium(III)-Induced Fluorescent Excimer Formation and Extinction in Calix[4]arene−Fluoroionophores. Inorg Chem 2005; 44:7866-75. [PMID: 16241136 DOI: 10.1021/ic050702v] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New fluorogenic or/and chromogenic calix[4]arenes 1-3 with two facing amide groups linked to fluorescent pyrene units are synthesized. Orientations of the pyrene units are remote from each other in 1 and face-to-face pi-stacked in 2, which produces different photophysical properties. In the excited state, the two pyrene units of 2 form a strong intramolecular excimer displaying an emission at 472 nm with a relatively weak monomer emission at 395 nm. In contrast, 1 exhibits only a monomer emission at 398 nm because intramolecular hydrogen bonding between the phenolic OH oxygens and the amide hydrogens prevents pi-stacking of the two pyrene groups. Fluorescence changes upon addition of various metal ions show that 1 has a remarkably high selectivity for In(3+) over the other metal ions tested. Compound 1 forms 2:1 (metal:ligand), as well as 1:1 complexes, with In(3+), with fluorescence varying uniquely with the complex stoichiometry. Compound 3, which possess two pyrene units and two chromogenic azo groups, shows almost the same binding behavior toward metal ions as does 1, together with additional bathochromic shifts of the absorption maximum. Compared with 1, compound 3 emits a considerably weaker fluorescence, which is attributed to electron transfer from the pyrene units to the nitro groups of the phenylazo moieties.
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Affiliation(s)
- Sung Kuk Kim
- Department of Chemistry, Dankook University, Seoul, Korea
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Gardinier WE, Bright FV. Temperature-Dependent Tail−Tail Dynamics of Pyrene-Labeled Poly(dimethylsiloxane) Oligomers Dissolved in Ethyl Acetate. J Phys Chem B 2005; 109:14824-9. [PMID: 16852876 DOI: 10.1021/jp0440939] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have determined the tail-tail dynamics and energetics of linear poly(dimethylsiloxane) (PDMS) polymers (M(n) = 3100; M(w)/M(n) = 1.07) that have been terminally labeled with pyrene (Py-PDMS-Py) in ethyl acetate between 255 and 323 K. The upper critical solution temperature (theta(u)) for the PDMS/ethyl acetate system is 278 K. The Py-PDMS-Py photophysics follow the Birks model at all of the temperatures studied. However, there is evidence for an increase in the local composition of PDMS surrounding the Py- residues in Py-PDMS-Py below the theta temperature. The recovered activation energy for Py-PDMS-Py tail-tail cyclization is the same as the activation energy for diffusion in ethyl acetate. The activation energy for cyclization is about fourfold larger in comparison to the barrier for PDMS internal backbone rotations. The estimated internal activation barrier for Py-PDMS-Py in ethyl acetate is in line with the internal barrier rotation for PDMS backbone rotation. The intramolecular excimer binding energy for Py-PDMS-Py in ethyl acetate is similar to the intermolecular pyrene excimer. In the ground state, the mean distance between the Py-PDMS-Py tail segments does not change over the temperature range studied. A comparison of these temperature-dependent Py-PDMS-Py/ethyl acetate results with previous results on Py-PDMS-Py in pure supercritical CO2 and CO2-dilated liquids shows that the addition of CO2 to the liquid phase offers the way to tune to Py-PDMS-Py tail-tail dynamics over the greatest range.
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Affiliation(s)
- Wendy E Gardinier
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
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Kim SK, Lee SH, Lee JY, Lee JY, Bartsch RA, Kim JS. An Excimer-Based, Binuclear, On−Off Switchable Calix[4]crown Chemosensor. J Am Chem Soc 2004; 126:16499-506. [PMID: 15600353 DOI: 10.1021/ja045689c] [Citation(s) in RCA: 286] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new fluorescent chemosensor with two different types of cation binding sites on the lower rims of a 1,3-alternate calix[4]arene (1) is synthesized. Two pyrene moieties linked to a cation recognition unit composed of two amide groups form a strong excimer in solution. For 1, the excimer fluorescence is quenched by Pb2+, but revived by addition of K+ to the Pb2+ ligand complex. Thus, metal ion exchange produces an on-off switchable, fluorescent chemosensor. Computational results show that the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbitals (LUMO) of the two pyrene moieties interact under UV irradiation of 1 and its K+ complex, while such HOMO-LUMO interactions are absent in the Pb2+ complex.
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Affiliation(s)
- Sung Kuk Kim
- Department of Chemistry, Institute of Nanosensor and Biotechnology, Dankook University, Seoul 140-714, Korea
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Gardinier WE, Kane MA, Bright FV. Effects of Added CO2 on the Dynamics of Poly(dimethylsiloxane) Oligomers Dissolved in a ϑ Solvent and a Poor Solvent. J Phys Chem B 2004. [DOI: 10.1021/jp0480706] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wendy E. Gardinier
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Maureen A. Kane
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Frank V. Bright
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
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Fushimi T, Fujita Y, Ohkita H, Ito S. Thermodynamics and Kinetics of Formation of Intramolecular Naphthalene Dimer Radical Cation Studied by Near-IR Transient Absorption Spectroscopy. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2004. [DOI: 10.1246/bcsj.77.1443] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Fushimi T, Fujita Y, Ohkita H, Ito S. Intramolecular dimer radical cations of α,ω-di(2-naphthyl)alkanes in solutions studied by near-IR transient absorption spectroscopy. J Photochem Photobiol A Chem 2004. [DOI: 10.1016/j.jphotochem.2004.02.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Seixas de Melo J, Costa T, Miguel MDG, Lindman B, Schillén K. Time-Resolved and Steady-State Fluorescence Studies of Hydrophobically Modified Water-Soluble Polymers. J Phys Chem B 2003. [DOI: 10.1021/jp0346054] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Seixas de Melo
- Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal, and Physical Chemistry 1, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Telma Costa
- Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal, and Physical Chemistry 1, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Maria da G. Miguel
- Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal, and Physical Chemistry 1, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Björn Lindman
- Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal, and Physical Chemistry 1, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Karin Schillén
- Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal, and Physical Chemistry 1, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
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Pandey S, Kane MA, Baker GA, Bright FV, Fürstner A, Seidel G, Leitner W. The Photophysics of 6-(1-Pyrenyl)hexyl-11(1-pyrenyl)undecanoate Dissolved in Organic Liquids and Supercritical Carbon Dioxide: Impact on Olefin Metathesis. J Phys Chem B 2002. [DOI: 10.1021/jp011497h] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Siddharth Pandey
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Max-Planck-Institut fur Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mulheim an der Ruhr, Germany
| | - Maureen A. Kane
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Max-Planck-Institut fur Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mulheim an der Ruhr, Germany
| | - Gary A. Baker
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Max-Planck-Institut fur Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mulheim an der Ruhr, Germany
| | - Frank V. Bright
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Max-Planck-Institut fur Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mulheim an der Ruhr, Germany
| | - Alois Fürstner
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Max-Planck-Institut fur Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mulheim an der Ruhr, Germany
| | - Günter Seidel
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Max-Planck-Institut fur Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mulheim an der Ruhr, Germany
| | - Walter Leitner
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Max-Planck-Institut fur Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mulheim an der Ruhr, Germany
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Farinha JPS, Piçarra S, Miesel K, Martinho JMG. Fluorescence Study of the Coil-Globule Transition of a PEO Chain in Toluene. J Phys Chem B 2001. [DOI: 10.1021/jp011467e] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. P. S. Farinha
- Centro de Química-Física Molecular, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
| | - Susana Piçarra
- Centro de Química-Física Molecular, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
| | - K. Miesel
- Centro de Química-Física Molecular, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
| | - J. M. G. Martinho
- Centro de Química-Física Molecular, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
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Ferreira JA, Coutinho PJ, Costa SM, Martinho J. Transient photokinetics of Rhodamine 3B+ClO4− in water:toluene mixtures. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00320-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kane MA, Baker GA, Pandey S, Maziarz EP, Hoth DC, Bright FV. Effects of Added CO2 on the Conformation of Pyrene End-Labeled Poly(dimethylsiloxane) Dissolved in Liquid Toluene. J Phys Chem B 2000. [DOI: 10.1021/jp001301y] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maureen A. Kane
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Gary A. Baker
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Siddharth Pandey
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - E. Peter Maziarz
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - David C. Hoth
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Frank V. Bright
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
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