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Bregnhøj M, Thorning F, Ogilby PR. Singlet Oxygen Photophysics: From Liquid Solvents to Mammalian Cells. Chem Rev 2024; 124:9949-10051. [PMID: 39106038 DOI: 10.1021/acs.chemrev.4c00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Molecular oxygen, O2, has long provided a cornerstone for studies in chemistry, physics, and biology. Although the triplet ground state, O2(X3Σg-), has garnered much attention, the lowest excited electronic state, O2(a1Δg), commonly called singlet oxygen, has attracted appreciable interest, principally because of its unique chemical reactivity in systems ranging from the Earth's atmosphere to biological cells. Because O2(a1Δg) can be produced and deactivated in processes that involve light, the photophysics of O2(a1Δg) are equally important. Moreover, pathways for O2(a1Δg) deactivation that regenerate O2(X3Σg-), which address fundamental principles unto themselves, kinetically compete with the chemical reactions of O2(a1Δg) and, thus, have practical significance. Due to technological advances (e.g., lasers, optical detectors, microscopes), data acquired in the past ∼20 years have increased our understanding of O2(a1Δg) photophysics appreciably and facilitated both spatial and temporal control over the behavior of O2(a1Δg). One goal of this Review is to summarize recent developments that have broad ramifications, focusing on systems in which oxygen forms a contact complex with an organic molecule M (e.g., a liquid solvent). An important concept is the role played by the M+•O2-• charge-transfer state in both the formation and deactivation of O2(a1Δg).
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Affiliation(s)
- Mikkel Bregnhøj
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Frederik Thorning
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Peter R Ogilby
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
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2
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Xiong Q, Zhao K, Cheng Y, He C, Lai Y, Shi M, Ming X, Jin F, Tao D, Liao R, Liu Y. Optical properties, bioimaging and theoretical calculation of a Zn(II) complex based on triphenylamine derivative. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:122012. [PMID: 36308823 DOI: 10.1016/j.saa.2022.122012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/14/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
A luminescent material with various optical properties based on a triphenylamine Zn(II) complex is described. The ultraviolet-visible absorption, one-photon excited fluorescence (OPEF) and two-photon excited fluorescence (TPEF) of the complex indicate that the material has good OPEF and TPEF properties. And the results of one- and two-photon HepG2 cells imaging experiments show the potential of the complex in fluorescence microscopy bioimaging. The experimental Stokes shift and the FWHM (full-width at half-maximum) in different solvents were correlated with the rMPI polarity of the solvent, and the perfect Boltzmann curves were obtained, where the Boltzmann correlation between Stokes shift and solvent polarity is reported for the second time. But the Boltzmann correlation between FWHM and solvent polarity is reported for the first time. In addition, the computational results indicate that, the covalent bond within the salt ZnBr2 is strengthened by the coordination, and the newly formed coordination bond Zn-N is stronger than the original covalent bond Zn-Br.
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Affiliation(s)
- Qijuan Xiong
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Kaipeng Zhao
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Yuling Cheng
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Changjun He
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Yuting Lai
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Mengyun Shi
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Xin Ming
- College of Biology and Food Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Feng Jin
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China.
| | - Dongliang Tao
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Rongbao Liao
- College of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Yong Liu
- College of Biology and Food Engineering, Fuyang Normal University, Fuyang 236037, China
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Abstract
We investigate the two-photon fluorescence (TPF) of conjugated polymer (CP) microspheres with diameters up to tens of micrometers. Two polymers, emitting in either the violet or red, were first synthesized and characterized in terms of their one-photon fluorescence and three-dimensional internal microstructure. Under femtosecond infrared excitation, both types of microspheres showed a strong TPF, which was investigated by the excitation intensity dependence, emission spectroscopy, time-resolved luminescence, and photobleaching dynamics. While the violet-fluorescent microspheres performed similarly compared to dye-doped polystyrene counterparts emitting at a similar wavelength, the red-fluorescent microspheres showed a two-orders-of-magnitude stronger TPF. This excellent performance is attributed to enhanced hyperpolarizability associated with intermolecular interactions in the polymer solid, indicating a route toward designed CP microspheres that could outperform currently-available microparticles for sensing or imaging applications involving two-photon fluorescence.
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4
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Determination of two-photon absorption in nucleobase analogues: a QR-DFT perspective. Photochem Photobiol Sci 2022; 21:529-543. [PMID: 35179700 DOI: 10.1007/s43630-022-00182-7] [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: 08/13/2021] [Accepted: 01/27/2022] [Indexed: 10/19/2022]
Abstract
With the prevalence of fluorescence spectroscopy in biological systems, and the benefits of two-photon absorption techniques, presented here is an assessment of the two-photon accessibility of modern fluorescent nucleobase analogues utilising quadratic response DFT. Due to the complex environment experienced by these nucleobases, the two-photon spectra of each analogue has been assessed in the presence of both [Formula: see text]-stacked and hydrogen-bonding interactions involving the canonical nucleobases. Findings suggest that the [Formula: see text]-stacking environment provides a more significant effect on the spectra of the analogues studies than a hydrogen-bonding environment; analogue structures presenting high two-photon cross-section values for one or more states coincide with polycyclic extensions to preserved canonical base structure, as observed in the qA family of analogues, while analogue structures more closely resembling the structure of the base in question present a much more muted spectra in comparison. Results from this investigation have also allowed for the derivation of a number of design rules for the development of potential, two-photon specific, analogues for future use in both imaging and potential photochemical activation.
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5
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Rational design, facile synthesis, and linear/nonlinear optical properties of novel two-photon absorption stilbene derivatives with different configurations. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Pauk K, Luňák S, Růžička A, Marková A, Mausová A, Kratochvíl M, Melánová K, Weiter M, Imramovský A, Vala M. Green-, Red-, and Infrared-Emitting Polymorphs of Sterically Hindered Push-Pull Substituted Stilbenes. Chemistry 2021; 27:4341-4348. [PMID: 33119919 DOI: 10.1002/chem.202004419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/23/2020] [Indexed: 11/07/2022]
Abstract
The synthesis, XRD single-crystal structure, powder XRD, and solid-state fluorescence of two new DPA-DPS-EWG derivatives (DPA=diphenylamino, DPS=2,5-diphenyl-stilbene, EWG=electron-withdrawing group, that is, carbaldehyde or dicyanovinylene, DCV) are described. Absorption and fluorescence maxima in solvents of various polarity show bathochromic shifts with respect to the parent DPA-stilbene-EWGs. The electronic coupling in dimers and potential twist elasticity of monomers were studied by density functional theory. Both polymorphs of the CHO derivative emit green fluorescence (527 and 550 nm) of moderate intensity (10 % and 5 %) in polycrystalline powder form. Moderate (5 %) red (672 nm) monomer-like emission was also observed for the first polymorph of the DCV derivative, whereas more intense (32 %) infrared (733 nm) emission of the second polymorph was ascribed to the excimer fluorescence.
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Affiliation(s)
- Karel Pauk
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 53009, Pardubice, Czech Republic
| | - Stanislav Luňák
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 61200, Brno, Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic
| | - Aneta Marková
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 61200, Brno, Czech Republic
| | - Anna Mausová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 53009, Pardubice, Czech Republic
| | - Matouš Kratochvíl
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 61200, Brno, Czech Republic
| | - Klára Melánová
- Joint Laboratory of Solid-State Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 84, 53210, Pardubice, Czech Republic
| | - Martin Weiter
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 61200, Brno, Czech Republic
| | - Aleš Imramovský
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 53009, Pardubice, Czech Republic
| | - Martin Vala
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 61200, Brno, Czech Republic
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Malcomson T, Paterson MJ. Theoretical determination of two-photon absorption in biologically relevant pterin derivatives. Photochem Photobiol Sci 2020; 19:1538-1547. [PMID: 33029609 DOI: 10.1039/d0pp00255k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Given the prevalence of fluorescence spectroscopy in biological systems, and the prevalence of pterin derivatives throughout biological systems, presented here is an assessment of the two-photon absorption spectroscopy as it applies to a range of the most commonly studied pterin derivatives. QR-CAMB3LYP//ccpVTZ calculations suggest that the use of two-photon spectroscopic methods would enable a more capable differentiation between closely related derivatives in comparison to the one-photon spectra, which show minimal qualitative deviation. Study of short tail derivatives shows that, in most cases, two-photon accessible states solely involve the π* LUMO as the particle orbital, with biopterin, neopterin, and 6-(hydroxymethyl)pterin presenting exceptional potential for targetting. Investigation of derivatives in which the tail contains an aromatic ring resulted in the observation of a series of two-photon accessible states involving charge transfer from the tail to the pterin moiety, the cross sections of which are highly dependent on the adoption of a planar geometry. The observation of these states presents a novel method for tracking the substitution of biologically important molecules such as folic acid and 5-methenyltetrahydrofolylpolyglutamate.
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Affiliation(s)
- Thomas Malcomson
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - Martin J Paterson
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
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8
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Dipold J, Vivas MG, Koeckelberghs G, Siqueira JP, De Boni L, Mendonca CR. Probing the Strong Near-IR Two-Photon Transition in Supramolecular Triphenylamine-based Polymers by Nonlinear Absorption Spectroscopy. J Phys Chem B 2020; 124:6147-6153. [PMID: 32539394 DOI: 10.1021/acs.jpcb.0c04127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Due to their capability of film formation and remarkable optical features, semiconductor polymers with high two-photon absorption (2PA) have been studied as potential candidates for the development of organic photonic platforms. Furthermore, there is a high demand for photonic devices operating in the near-infrared (IR) region. However, the magnitude of the nonlinear optical response of random coil polymers in the IR region is weak due to the loss of molecular structure caused by increasing the π-conjugated backbone. Thus, herein we aim to investigate the molecular structure and 2PA features relationship for four polymers with supramolecular (helical) rodlike structure. Such polymers have a rigid core based on triphenylamine groups connected to the chiral binaphthalene units and a strong electron-withdrawing group (EWG). This kind of structure allows a very high chromophore density, which was responsible for generating 2PA cross-section between 305 GM and 565 GM in the near-IR (900-1300 nm), depending on the EWG strength. in light of the two-level model within the sum-overstates approach, we estimated the degree of intramolecular charge transfer induced by 2PA in the IR region, and values as high as 50-70% were found. Such a critical outcome allows the 2PA cross-section in the IR region to remain high even though the ratio between the visible/IR-band 2PA cross-section increases as a function of EWG strength.
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Affiliation(s)
- Jessica Dipold
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil
| | - Marcelo G Vivas
- Laboratório de Espectroscopia Óptica e Fotônica, Universidade Federal de Alfenas, Poços de Caldas, Minas Gerais 37715-400, Brazil
| | - Guy Koeckelberghs
- Laboratory for Polymer Synthesis, Katholieke Universiteit Leuven, Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Jonathas P Siqueira
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil.,Instituto de Fı́sica "Gleb Wataghin", Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - Leonardo De Boni
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil
| | - Cleber R Mendonca
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil
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9
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Tahara A, Kitahara I, Sakata D, Kuninobu Y, Nagashima H. Donor–Acceptor π-Conjugated Enamines: Functional Group-Compatible Synthesis from Amides and Their Photoabsorption and Photoluminescence Properties. J Org Chem 2019; 84:15236-15254. [DOI: 10.1021/acs.joc.9b02267] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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10
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Gonçalves Vivas M, Dario Fonseca R, de Paula Siqueira J, Renato Mendonça C, Rodrigues PC, De Boni L. Femtosecond Two-Photon Absorption Spectroscopy of Poly(fluorene) Derivatives Containing Benzoselenadiazole and Benzothiadiazole. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E512. [PMID: 28772872 PMCID: PMC5458991 DOI: 10.3390/ma10050512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/19/2017] [Accepted: 04/28/2017] [Indexed: 11/23/2022]
Abstract
We have investigated the molecular structure and two-photon absorption (2PA) properties relationship of two push-pull poly(fluorene) derivatives containing benzoselenadiazole and benzothiadiazole units. For that, we have used the femtosecond wavelength-tunable Z-scan technique with a low repetition rate (1 kHz) and an energy per pulse on the order of nJ. Our results show that both 2PA spectra present a strong 2PA (around 600 GM (1 GM = 1 × 10-50 cm⁴·s·photon-1)) band at around 720 nm (transition energy 3.45 eV) ascribed to the strongly 2PA-allowed 1Ag-like → mAg-like transition, characteristic of poly(fluorene) derivatives. Another 2PA band related to the intramolecular charge transfer was also observed at around 900 nm (transition energy 2.75 eV). In both 2PA bands, we found higher 2PA cross-section values for the poly(fluorene) containing benzothiadiazole unit. This outcome was explained through the higher charge redistribution at the excited state caused by the benzothiadiazole group as compared to the benzoselenadiazole and confirmed by means of solvatochromic Stokes shift measurements. To shed more light on these results, we employed the sum-over-states approach within the two-energy level model to estimate the maximum permanent dipole moment change related to the intramolecular charge transfer transition.
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Affiliation(s)
- Marcelo Gonçalves Vivas
- Instituto de Ciência e Tecnologia, Universidade Federal de Alfenas, Poços de Caldas, MG 37715-400, Brazil.
| | - Ruben Dario Fonseca
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP 13566-590, Brazil.
- Departamento de Ciencias Naturales y Exactas, Universidad de la Costa, Barranquilla 080002, Colombia.
| | | | - Cleber Renato Mendonça
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP 13566-590, Brazil.
| | - Paula C Rodrigues
- Departamento Acadêmico de Química e Biologia, Universidade Tecnológica Federal do Paraná, Curitiba, PR 81280-340, Brazil.
| | - Leonardo De Boni
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP 13566-590, Brazil.
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11
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Isozaki T, Oba H, Ikoma T, Suzuki T. Simultaneous Two-Photon Absorption to Gerade Excited Singlet States of Diphenylacetylene and Diphenylbutadiyne Using Optical-Probing Photoacoustic Spectroscopy. J Phys Chem A 2016; 120:6137-45. [PMID: 27410388 DOI: 10.1021/acs.jpca.6b02929] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Simultaneous two-photon absorption to one-photon forbidden electronically excited states of diphenylacetylene (DPA) and diphenylbutadiyne (DPB) was investigated by means of highly sensitive optical-probing photoacoustic spectroscopy. The incident laser power dependencies on photoacoustic signal intensity indicate that the signals are dominated by the two-photon absorption regime. Two-photon absorption is responsible for transitions to gerade excited states based on the selection rule. The two-photon absorption bands observed in the heat action spectra were assigned with the aid of quantum chemical calculations. The relative magnitude of the two-photon absorption cross sections of DPA and DPB was estimated, and the larger two-photon absorption cross section of DPB was related to the resonance effect with the red-shifted one-photon allowed 1(1)B1u ← 1(1)Ag transition of DPB.
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Affiliation(s)
- Tasuku Isozaki
- Department of Chemistry and Biological Science, Aoyama Gakuin University , 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Hikari Oba
- Department of Chemistry and Biological Science, Aoyama Gakuin University , 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Tadaaki Ikoma
- Graduate School of Science and Technology, Niigata University , 2-8050 Ikarashi, Nishi-ku, Niigata 950-2181, Japan.,CREST, Japan Science and Technology Agency , 4-1-8 Honcho, Kawaguchi 332-0012, Japan.,Center for Instrumental Analysis, Niigata University , 2-8050 Ikarashi, Nishi-ku, Niigata 950-2181, Japan
| | - Tadashi Suzuki
- Department of Chemistry and Biological Science, Aoyama Gakuin University , 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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12
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Nielsen CBO, Mikkelsen KV. Optical properties of pyridine and methyl-pyridinium in water using DFT/MM. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1015643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Nielsen CBO, Sørensen HO, Kongsted J. Comparison between Theoretically and Experimentally Determined Electronic Properties: Applications to Two-Photon Singlet Oxygen Sensitizers. J Phys Chem A 2015; 119:1906-16. [DOI: 10.1021/jp5122849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Christian Benedikt Orea Nielsen
- Polymer
Department, Risø National Laboratory, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
- Department
of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - Henning Osholm Sørensen
- Nano-Science
Center, Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Jacob Kongsted
- Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
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14
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Makarov NS, Lau PC, Olson C, Velizhanin KA, Solntsev KM, Kieu K, Kilina S, Tretiak S, Norwood RA, Peyghambarian N, Perry JW. Two-photon absorption in CdSe colloidal quantum dots compared to organic molecules. ACS NANO 2014; 8:12572-12586. [PMID: 25427158 DOI: 10.1021/nn505428x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We discuss fundamental differences in electronic structure as reflected in one- and two-photon absorption spectra of semiconductor quantum dots and organic molecules by performing systematic experimental and theoretical studies of the size-dependent spectra of colloidal quantum dots. Quantum-chemical and effective-mass calculations are used to model the one- and two-photon absorption spectra and compare them with the experimental results. Currently, quantum-chemical calculations are limited to only small-sized quantum dots (nanoclusters) but allow one to study various environmental effects on the optical spectra such as solvation and various surface functionalizations. The effective-mass calculations, on the other hand, are applicable to the larger-sized quantum dots and can, in general, explain the observed trends but are insensitive to solvent and ligand effects. Careful comparison of the experimental and theoretical results allows for quantifying the range of applicability of theoretical methods used in this work. Our study shows that the small clusters can be in principle described in a manner similar to that used for organic molecules. In addition, there are several important factors (quality of passivation, nature of the ligands, and intraband/interband transitions) affecting optical properties of the nanoclusters. The larger-size quantum dots, on the other hand, behave similarly to bulk semiconductors, and can be well described in terms of the effective-mass models.
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Affiliation(s)
- Nikolay S Makarov
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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15
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Meath WJ, Jagatap BN. On the effects of permanent molecular dipoles in the simultaneous absorption of two photons: full generalized rotating wave approximation versus analytical results. J Chem Phys 2014; 139:144104. [PMID: 24116600 DOI: 10.1063/1.4824382] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The effects of permanent dipoles, and the relative effects of the direct permanent dipole and the virtual state excitation mechanisms, are discussed for excitations involving the simultaneous absorption of two identical photons. Two molecular models for two-photon excitation, one dominated by the direct permanent dipole mechanism and the other having significant contributions from both excitation mechanisms, are used for this purpose. Resonance profiles, as a function of laser intensity, are evaluated for both models by employing the full Generalized Rotating Wave Approximation method and the recently developed Analytic Generalized Rotating Wave Approximation (AGRWA). The profiles are used to assess (1) the nature of the effects of permanent molecular dipoles, (2) the relative contributions of the two excitation mechanisms, and (3) the validity of the AGRWA for two-photon excitations. The AGRWA is a very useful interpretive∕predictive tool even for higher laser intensities where its validity becomes questionable. It can be used to suggest how to exploit the effects of molecular permanent dipoles to enhance two photon excitations using both excitation mechanisms.
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Affiliation(s)
- William J Meath
- Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
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16
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Vivas MG, Silva DL, Malinge J, Boujtita M, Zaleśny R, Bartkowiak W, Ågren H, Canuto S, De Boni L, Ishow E, Mendonca CR. Molecular structure-optical property relationships for a series of non-centrosymmetric two-photon absorbing push-pull triarylamine molecules. Sci Rep 2014; 4:4447. [PMID: 24658327 PMCID: PMC3963076 DOI: 10.1038/srep04447] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 03/07/2014] [Indexed: 12/31/2022] Open
Abstract
This article reports on a comprehensive study of the two-photon absorption (2PA) properties of six novel push-pull octupolar triarylamine compounds as a function of the nature of the electron-withdrawing groups. These compounds present an octupolar structure consisting of a triarylamine core bearing two 3,3′-bis(trifluoromethyl)phenyl arms and a third group with varying electron-withdrawing strength (H < CN < CHO < NO2 < Cyet < Vin). The 2PA cross-sections, measured by using the femtosecond open-aperture Z-scan technique, showed significant enhancement from 45 up to 125 GM for the lowest energy band and from 95 up to 270 GM for the highest energy band. The results were elucidated based on the large changes in the transition and permanent dipole moments and in terms of (i) EWG strength, (ii) degree of donor-acceptor charge transfer and (iii) electronic coupling between the arms. The 2PA results were eventually supported and confronted with theoretical DFT calculations of the two-photon transition oscillator strengths.
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Affiliation(s)
- Marcelo G Vivas
- 1] Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil [2] Instituto de Ciência e Tecnologia, Universidade Federal de Alfenas, Cidade Universitária - BR 267 Km 533, 37715-400 Poços de Caldas, MG, Brazil
| | - Daniel L Silva
- 1] Instituto de Física, Universidade de São Paulo, CP 66318, 05314-970, São Paulo, SP, Brazil [2] Departamento de Ciências da Natureza, Matemática e Educação, Universidade Federal de São Carlos, Rod. Anhanguera - Km 174, 13600-970 Araras, SP, Brazil
| | - Jérémy Malinge
- PPSM-UMR CNRS 8531, ENS Cachan, 61 avenue du Président Wilson, 94235 Cachan, France
| | - Mohammed Boujtita
- CEISAM-UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, 44322 Nantes, France
| | - Robert Zaleśny
- Theoretical Chemistry Group, Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Wojciech Bartkowiak
- Theoretical Chemistry Group, Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Hans Ågren
- Department of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Sylvio Canuto
- Instituto de Física, Universidade de São Paulo, CP 66318, 05314-970, São Paulo, SP, Brazil
| | - Leonardo De Boni
- Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil
| | - Eléna Ishow
- 1] PPSM-UMR CNRS 8531, ENS Cachan, 61 avenue du Président Wilson, 94235 Cachan, France [2] CEISAM-UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, 44322 Nantes, France
| | - Cleber R Mendonca
- Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil
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17
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Narayanan Nair M, Hobeika N, Calard F, Malval JP, Aloïse S, Spangenberg A, Simon L, Cranney M, Vonau F, Aubel D, Serein-Spirau F, Lère-Porte JP, Lacour MA, Jarrosson T. One- and two-photon absorption and emission properties of an oligo(phenylenethienylene)s series. Phys Chem Chem Phys 2014; 16:12826-37. [DOI: 10.1039/c2cp44365a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Bhatta RS, Perry DS, Tsige M. Nanostructures and Electronic Properties of a High-Efficiency Electron-Donating Polymer. J Phys Chem A 2013; 117:12628-34. [DOI: 10.1021/jp409069d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ram S. Bhatta
- Department of Polymer Science and †Department of Chemistry, The University of Akron, Akron, Ohio 44325, United States
| | - David S. Perry
- Department of Polymer Science and †Department of Chemistry, The University of Akron, Akron, Ohio 44325, United States
| | - Mesfin Tsige
- Department of Polymer Science and †Department of Chemistry, The University of Akron, Akron, Ohio 44325, United States
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19
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Diazadioxa[8]circulenes: Planar Antiaromatic Cyclooctatetraenes. Chemistry 2013; 19:17097-102. [DOI: 10.1002/chem.201303194] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Indexed: 11/07/2022]
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20
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Achelle S, Malval J, Aloïse S, Barsella A, Spangenberg A, Mager L, Akdas‐Kilig H, Fillaut J, Caro B, Robin‐le Guen F. Synthesis, Photophysics and Nonlinear Optical Properties of Stilbenoid Pyrimidine‐Based Dyes Bearing Methylenepyran Donor Groups. Chemphyschem 2013; 14:2725-36. [DOI: 10.1002/cphc.201300419] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Sylvain Achelle
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, IUT de Lannion rue Edouard Branly, BP 30219, 22302 Lannion Cedex (France)
| | - Jean‐Pierre Malval
- Institut de Science des Matériaux de Mulhouse, UMR CNRS 7361, Université de Haute‐Alsace, 15 rue Jean Starcky ,68057 Mulhouse (France)
| | - Stéphane Aloïse
- Laboratoire de Spectrochimie Infrarouge et Raman, UMR CNRS 8516, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex (France)
| | - Alberto Barsella
- Département d'Optique ultra‐rapide et Nanophotonique, IPCMS‐CNRS 23 Rue du Loess, BP 43, 67034 Strasbourg Cedex 2 (France)
| | - Arnaud Spangenberg
- Institut de Science des Matériaux de Mulhouse, UMR CNRS 7361, Université de Haute‐Alsace, 15 rue Jean Starcky ,68057 Mulhouse (France)
| | - Loic Mager
- Département d'Optique ultra‐rapide et Nanophotonique, IPCMS‐CNRS 23 Rue du Loess, BP 43, 67034 Strasbourg Cedex 2 (France)
| | - Huriye Akdas‐Kilig
- Institut des Sciences Chimiques de Rennes UMR CNRS 6226, Campus de Beaulieu, 263 av. du Général Leclerc, 35042 Rennes (France)
| | - Jean‐Luc Fillaut
- Institut des Sciences Chimiques de Rennes UMR CNRS 6226, Campus de Beaulieu, 263 av. du Général Leclerc, 35042 Rennes (France)
| | - Bertrand Caro
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, IUT de Lannion rue Edouard Branly, BP 30219, 22302 Lannion Cedex (France)
| | - Françoise Robin‐le Guen
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, IUT de Lannion rue Edouard Branly, BP 30219, 22302 Lannion Cedex (France)
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21
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Bergendahl LT, Paterson MJ. Influence of electronic effects on one- and two-photon absorption in porphyrin isomers. RSC Adv 2013. [DOI: 10.1039/c3ra40790j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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22
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Vivas MG, Koeckelberghs G, Mendonca CR. Effect of solvent-induced coil to helix conformational change on the two-photon absorption spectrum of poly(3,6-phenanthrene). J Phys Chem B 2012; 116:14708-14. [PMID: 23176606 DOI: 10.1021/jp308161x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper investigates the effect of solvent-induced conformational changes of poly(3,6-phenanthrene) on their two-photon absorption (2PA). Such effect was studied employing the wavelength-tunable femtosecond Z-scan technique and modeled using the sum-over-essential states approach. We observed a strong reduction of the 2PA cross-section when the sample was prepared in hexane (poor solvent) in comparison to chloroform (good solvent), which is related to the conformation adopted by the polymer in each case. In chloroform it adopts a random coil conformation, as opposed to the one-handed helix conformation in hexane. Our results pointed out that the coil to helix conformation change decreases the degree of molecular planarity of the polymer π-conjugated backbone, which is primarily responsible for their optical nonlinearity, contributing to diminishing the effective transition dipole moments and, consequently, the 2PA cross-section. Moreover, by studying the nonlinear response with different light polarization, we showed that, although the solvent-induced conformational change does not alter the molecular symmetry of the polymer, it modifies considerably the direction of the transition dipole moments between the excited states.
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Affiliation(s)
- M G Vivas
- Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP.
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23
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Zhao Y, Roberts GM, Greenough SE, Farrer NJ, Paterson MJ, Powell WH, Stavros VG, Sadler PJ. Two-Photon-Activated Ligand Exchange in Platinum(II) Complexes. Angew Chem Int Ed Engl 2012; 51:11263-6. [DOI: 10.1002/anie.201206283] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2012] [Indexed: 11/10/2022]
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24
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Zhao Y, Roberts GM, Greenough SE, Farrer NJ, Paterson MJ, Powell WH, Stavros VG, Sadler PJ. Two-Photon-Activated Ligand Exchange in Platinum(II) Complexes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206283] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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25
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Pimenta FM, Jensen RL, Holmegaard L, Esipova TV, Westberg M, Breitenbach T, Ogilby PR. Singlet-Oxygen-Mediated Cell Death Using Spatially-Localized Two-Photon Excitation of an Extracellular Sensitizer. J Phys Chem B 2012; 116:10234-46. [DOI: 10.1021/jp304954m] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Frederico M. Pimenta
- Center for
Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
| | - Rasmus L. Jensen
- Center for
Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
| | - Lotte Holmegaard
- Center for
Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
| | - Tatiana V. Esipova
- Department of Biochemistry and
Biophysics, University of Pennsylvania,
Philadelphia, Pennsylvania 19104, United States
| | - Michael Westberg
- Center for
Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
| | - Thomas Breitenbach
- Center for
Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
| | - Peter R. Ogilby
- Center for
Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
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26
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Makowski BT, Lott J, Valle B, Singer KD, Weder C. Functionalized cyano-OPVs as melt-processable two-photon absorbers. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15846a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Kucherak OA, Richert L, Mély Y, Klymchenko AS. Dipolar 3-methoxychromones as bright and highly solvatochromic fluorescent dyes. Phys Chem Chem Phys 2012; 14:2292-300. [DOI: 10.1039/c2cp23037b] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Vivas MG, Nogueira SL, Silva HS, Barbosa Neto NM, Marletta A, Serein-Spirau F, Lois S, Jarrosson T, De Boni L, Silva RA, Mendonca CR. Linear and Nonlinear Optical Properties of the Thiophene/Phenylene-Based Oligomer and Polymer. J Phys Chem B 2011; 115:12687-93. [DOI: 10.1021/jp203194t] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. G. Vivas
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil
| | - S. L. Nogueira
- Instituto de Física, Universidade Federal de Uberlândia, MG, Brazil
| | - H. Santos Silva
- Instituto de Física, Universidade Federal de Uberlândia, MG, Brazil
| | | | - A. Marletta
- Instituto de Física, Universidade Federal de Uberlândia, MG, Brazil
| | - F. Serein-Spirau
- Institut Charles Gerhardt, Equipe AM2N, Architectures Moléculaires et Matériaux Nanostructurés, ENSCM, Montpellier, France
| | - S. Lois
- Institut Charles Gerhardt, Equipe AM2N, Architectures Moléculaires et Matériaux Nanostructurés, ENSCM, Montpellier, France
| | - T. Jarrosson
- Institut Charles Gerhardt, Equipe AM2N, Architectures Moléculaires et Matériaux Nanostructurés, ENSCM, Montpellier, France
| | - L. De Boni
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil
| | - R. A. Silva
- Instituto de Física, Universidade Federal de Uberlândia, MG, Brazil
| | - C. R. Mendonca
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil
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29
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Garner LE, Park J, Dyar SM, Chworos A, Sumner JJ, Bazan GC. Modification of the Optoelectronic Properties of Membranes via Insertion of Amphiphilic Phenylenevinylene Oligoelectrolytes. J Am Chem Soc 2010; 132:10042-52. [DOI: 10.1021/ja1016156] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Logan E. Garner
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland 20783, and School of Chemical Engineering and Materials Science, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, Korea
| | - Juhyun Park
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland 20783, and School of Chemical Engineering and Materials Science, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, Korea
| | - Scott M. Dyar
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland 20783, and School of Chemical Engineering and Materials Science, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, Korea
| | - Arkadiusz Chworos
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland 20783, and School of Chemical Engineering and Materials Science, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, Korea
| | - James J. Sumner
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland 20783, and School of Chemical Engineering and Materials Science, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, Korea
| | - Guillermo C. Bazan
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland 20783, and School of Chemical Engineering and Materials Science, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, Korea
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Ogilby PR. Singlet oxygen: there is indeed something new under the sun. Chem Soc Rev 2010; 39:3181-209. [PMID: 20571680 DOI: 10.1039/b926014p] [Citation(s) in RCA: 831] [Impact Index Per Article: 59.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Singlet oxygen, O(2)(a(1)Delta(g)), the lowest excited electronic state of molecular oxygen, has been known to the scientific community for approximately 80 years. It has a characteristic chemistry that sets it apart from the triplet ground state of molecular oxygen, O(2)(X(3)Sigma), and is important in fields that range from atmospheric chemistry and materials science to biology and medicine. For such a "mature citizen", singlet oxygen nevertheless remains at the cutting-edge of modern science. In this critical review, recent work on singlet oxygen is summarized, focusing primarily on systems that involve light. It is clear that there is indeed still something new under the sun (243 references).
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Affiliation(s)
- Peter R Ogilby
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, DK-8000, Arhus, Denmark.
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Cong H, Toftegaard R, Arnbjerg J, Ogilby PR. Silica-coated gold nanorods with a gold overcoat: controlling optical properties by controlling the dimensions of a gold-silica-gold layered nanoparticle. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:4188-4195. [PMID: 20000431 DOI: 10.1021/la9032223] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Silica shells were directly coated onto surfactant-capped gold nanorods by a simple one-step method. The procedure required no intermediate coating of the gold nanorod prior to the formation of the smooth silica shell, the thickness of which could be accurately controlled over the range 60-150 nm. These silica-encased gold nanorods were then covered with a gold overcoat to yield nanoparticles with unique optical properties that varied with the thicknesses of both the silica layer and the gold overcoat. Using these bulk solution-phase techniques, homogeneous distributions of gold-silica-gold layered nanoparticles with a pronounced plasmon extinction band in the near-IR (i.e., approximately 900-1700 nm) are readily and reproducibly prepared. More specifically, when using a core gold nanorod whose dimensions yield a plasmon band in the visible region of the spectrum (e.g., approximately 685 nm), the effect of the gold overcoat is to produce a broad plasmon band that is red-shifted by as much as approximately 1000 nm. As such, these multilaminate particles should be of interest as a convenient tool to enhance weak near-IR radiative transitions (e.g., singlet oxygen, O(2)(a(1)Delta(g)), phosphorescence at 1270 nm).
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Affiliation(s)
- Huaiping Cong
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Arhus C, Denmark
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Nielsen CB, Arnbjerg J, Johnsen M, Jo̷rgensen M, Ogilby PR. Molecular Tuning of Phenylene-Vinylene Derivatives for Two-Photon Photosensitized Singlet Oxygen Production. J Org Chem 2009; 74:9094-104. [DOI: 10.1021/jo9020216] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Christian B. Nielsen
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Århus DK-8000, Denmark,
- Polymer Department, Riso̷ National Laboratory, DK-4000 Roskilde, Denmark
| | - Jacob Arnbjerg
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Århus DK-8000, Denmark,
| | - Mette Johnsen
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Århus DK-8000, Denmark,
| | - Mikkel Jo̷rgensen
- Polymer Department, Riso̷ National Laboratory, DK-4000 Roskilde, Denmark
| | - Peter R. Ogilby
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Århus DK-8000, Denmark,
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34
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Stepanenko IA, Kompanets VO, Chekalin SV, Makhneva ZK, Moskalenko AA, Pishchalnikov RY, Razjivin AP. Two-photon excitation spectrum of fluorescence of the light-harvesting complex B800–850 from Allochromatium minutissimum within 1200–1500 (600–750) nm spectral range is not carotenoid mediated. BIOCHEMISTRY MOSCOW SUPPLEMENT SERIES A-MEMBRANE AND CELL BIOLOGY 2009. [DOI: 10.1134/s1990747809020020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Gonzalez MM, Arnbjerg J, Denofrio MP, Erra-Balsells R, Ogilby PR, Cabrerizo FM. One- and Two-Photon Excitation of β-Carbolines in Aqueous Solution: pH-Dependent Spectroscopy, Photochemistry, and Photophysics. J Phys Chem A 2009; 113:6648-56. [DOI: 10.1021/jp902105x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- M. Micaela Gonzalez
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, 3p, Ciudad Universitaria, 1428 - Buenos Aires, Argentina, Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, DK-8000 Århus, Denmark, and INIFTA-CONICET-CIC, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | - Jacob Arnbjerg
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, 3p, Ciudad Universitaria, 1428 - Buenos Aires, Argentina, Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, DK-8000 Århus, Denmark, and INIFTA-CONICET-CIC, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | - M. Paula Denofrio
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, 3p, Ciudad Universitaria, 1428 - Buenos Aires, Argentina, Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, DK-8000 Århus, Denmark, and INIFTA-CONICET-CIC, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | - Rosa Erra-Balsells
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, 3p, Ciudad Universitaria, 1428 - Buenos Aires, Argentina, Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, DK-8000 Århus, Denmark, and INIFTA-CONICET-CIC, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | - Peter R. Ogilby
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, 3p, Ciudad Universitaria, 1428 - Buenos Aires, Argentina, Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, DK-8000 Århus, Denmark, and INIFTA-CONICET-CIC, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | - Franco M. Cabrerizo
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, 3p, Ciudad Universitaria, 1428 - Buenos Aires, Argentina, Center for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, DK-8000 Århus, Denmark, and INIFTA-CONICET-CIC, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
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36
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Myers Kelley A. Resonance Raman and Resonance Hyper-Raman Intensities: Structure and Dynamics of Molecular Excited States in Solution. J Phys Chem A 2008; 112:11975-91. [DOI: 10.1021/jp805530y] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anne Myers Kelley
- School of Natural Sciences, University of California, Merced, P.O. Box 2039, Merced, California 95344
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37
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Johnsen M, Ogilby PR. Effect of Solvent on Two-Photon Absorption by Vinyl Benzene Derivatives. J Phys Chem A 2008; 112:7831-9. [DOI: 10.1021/jp8020326] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mette Johnsen
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, University of Aarhus, DK-8000 Århus, Denmark
| | - Peter R. Ogilby
- Center for Oxygen Microscopy and Imaging, Department of Chemistry, University of Aarhus, DK-8000 Århus, Denmark
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