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Beck WF. Intramolecular charge transfer and the function of vibronic excitons in photosynthetic light harvesting. PHOTOSYNTHESIS RESEARCH 2024:10.1007/s11120-024-01095-5. [PMID: 38656684 DOI: 10.1007/s11120-024-01095-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 03/15/2024] [Indexed: 04/26/2024]
Abstract
A widely discussed explanation for the prevalence of pairs or clusters of closely spaced electronic chromophores in photosynthetic light-harvesting proteins is the presence of ultrafast and highly directional excitation energy transfer pathways mediated by vibronic excitons, the delocalized optical excitations derived from mixing of the electronic and vibrational states of the chromophores. We discuss herein the hypothesis that internal conversion processes between exciton states on the <100 fs timescale are possible when the excitonic potential energy surfaces are controlled by the vibrational modes that induce charge transfer character in a strongly coupled system of chromophores. We discuss two examples, the peridinin-chlorophyll protein from marine dinoflagellates and the intact phycobilisome from cyanobacteria, in which the intramolecular charge-transfer (ICT) character arising from out-of-plane distortion of the conjugation of carotenoid or bilin chromophores also results in localization of the initially delocalized optical excitation on the vibrational timescale. Tuning of the ground state conformations of the chromophores to manipulate their ICT character provides a natural photoregulatory mechanism, which would control the overall quantum yield of excitation energy transfer by turning on and off the delocalized character of the optical excitations.
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Affiliation(s)
- Warren F Beck
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA.
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2
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Dar N, Ankari R. Theoretical Models, Preparation, Characterization and Applications of Cyanine J-Aggregates: A Minireview. ChemistryOpen 2022; 11:e202200103. [PMID: 36423932 PMCID: PMC9691386 DOI: 10.1002/open.202200103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 10/08/2022] [Indexed: 11/27/2022] Open
Abstract
Cyanines are one of the few kinds of molecules whose absorbance and emission can be shifted in a broad spectral range from the ultraviolet to the near infrared. They can easily transform into J-aggregates with narrow absorption and emission peaks, along with a redshift in their spectra. This mini-review presents cyanine dyes and their J-aggregates and discusses their structure and spectral properties that illustrate their specificities. We summarize the theoretical and experimental state of the art on cyanine J-aggregates and their applications, also laying the groundwork for cyanine J-aggregates synthesis and characterization methods.
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Affiliation(s)
- Nitzan Dar
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
| | - Rinat Ankari
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
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Segalina A, Aranda D, Green JA, Cristino V, Caramori S, Prampolini G, Pastore M, Santoro F. How the Interplay among Conformational Disorder, Solvation, Local, and Charge-Transfer Excitations Affects the Absorption Spectrum and Photoinduced Dynamics of Perylene Diimide Dimers: A Molecular Dynamics/Quantum Vibronic Approach. J Chem Theory Comput 2022; 18:3718-3736. [PMID: 35377648 PMCID: PMC9202308 DOI: 10.1021/acs.jctc.2c00063] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Indexed: 12/12/2022]
Abstract
In this contribution we present a mixed quantum-classical dynamical approach for the computation of vibronic absorption spectra of molecular aggregates and their nonadiabatic dynamics, taking into account the coupling between local excitations (LE) and charge-transfer (CT) states. The approach is based on an adiabatic (Ad) separation between the soft degrees of freedom (DoFs) of the system and the stiff vibrations, which are described by the quantum dynamics (QD) of wave packets (WPs) moving on the coupled potential energy surfaces (PESs) of the LE and CT states. These PESs are described with a linear vibronic coupling (LVC) Hamiltonian, parameterized by an overlap-based diabatization on the grounds of time-dependent density functional theory computations. The WPs time evolution is computed with the multiconfiguration time-dependent Hartree method, using effective modes defined through a hierarchical representation of the LVC Hamiltonian. The soft DoFs are sampled with classical molecular dynamics (MD), and the coupling between the slow and fast DoFs is included by recomputing the key parameters of the LVC Hamiltonians, specifically for each MD configuration. This method, named Ad-MD|gLVC, is applied to a perylene diimide (PDI) dimer in acetonitrile and water solutions, and it is shown to accurately reproduce the change in the vibronic features of the absorption spectrum upon aggregation. Moreover, the microscopic insight offered by the MD trajectories allows for a detailed understanding of the role played by the fluctuation of the aggregate structure on the shape of the vibronic spectrum and on the population of LE and CT states. The nonadiabatic QD predicts an extremely fast (∼50 fs) energy transfer between the two LEs. CT states have only a moderate effect on the absorption spectrum, despite the fact that after photoexcitation they are shown to acquire a fast and non-negligible population, highlighting their relevance in dictating the charge separation and transport in PDI-based optical devices.
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Affiliation(s)
- Alekos Segalina
- Université
de Lorraine and CNRS, LPCT, UMR 7019, F-54000 Nancy, France
| | - Daniel Aranda
- Instituto
de Ciencia Molecular (ICMol), Universidad
de Valencia, Catedrático J. Beltrán 2, 46980 Paterna, Valencia, Spain
| | - James A. Green
- Consiglio
Nazionale delle Ricerche, Istituto di Biostrutture
e Bioimmagini (IBB-CNR), via Mezzocannone 16, I-80136 Napoli, Italy
| | - Vito Cristino
- Dipartimento
di Scienze Chimiche, Farmaceutiche ed Agrarie, Via Fossato di Mortara 17, 44121 Ferrara, Italy
| | - Stefano Caramori
- Dipartimento
di Scienze Chimiche, Farmaceutiche ed Agrarie, Via Fossato di Mortara 17, 44121 Ferrara, Italy
| | - Giacomo Prampolini
- Istituto
di Chimica dei Composti Organo Metallici, Consiglio Nazionale delle Ricerche, (ICCOM-CNR), SS di Pisa, Area della Ricerca, via G. Moruzzi
1, I-56124 Pisa, Italy
| | | | - Fabrizio Santoro
- Istituto
di Chimica dei Composti Organo Metallici, Consiglio Nazionale delle Ricerche, (ICCOM-CNR), SS di Pisa, Area della Ricerca, via G. Moruzzi
1, I-56124 Pisa, Italy
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Segalina A, Cerezo J, Prampolini G, Santoro F, Pastore M. Accounting for Vibronic Features through a Mixed Quantum-Classical Scheme: Structure, Dynamics, and Absorption Spectra of a Perylene Diimide Dye in Solution. J Chem Theory Comput 2020; 16:7061-7077. [DOI: 10.1021/acs.jctc.0c00919] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Alekos Segalina
- Université de Lorraine & CNRS, LPCT, UMR 7019, F-54000 Nancy, France
| | - Javier Cerezo
- Departamento de Química and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Giacomo Prampolini
- Istituto di Chimica dei Composti Organo Metallici, Consiglio Nazionale delle Ricerche, (ICCOM-CNR) SS di Pisa, Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Fabrizio Santoro
- Istituto di Chimica dei Composti Organo Metallici, Consiglio Nazionale delle Ricerche, (ICCOM-CNR) SS di Pisa, Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa, Italy
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Hestand NJ, Spano FC. Expanded Theory of H- and J-Molecular Aggregates: The Effects of Vibronic Coupling and Intermolecular Charge Transfer. Chem Rev 2018; 118:7069-7163. [PMID: 29664617 DOI: 10.1021/acs.chemrev.7b00581] [Citation(s) in RCA: 739] [Impact Index Per Article: 123.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The electronic excited states of molecular aggregates and their photophysical signatures have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel exciton theory almost 90 years ago. The influence of molecular packing on basic optical probes like absorption and photoluminescence was originally worked out by Kasha for aggregates dominated by Coulombic intermolecular interactions, eventually leading to the classification of J- and H-aggregates. This review outlines advances made in understanding the relationship between aggregate structure and photophysics when vibronic coupling and intermolecular charge transfer are incorporated. An assortment of packing geometries is considered from the humble molecular dimer to more exotic structures including linear and bent aggregates, two-dimensional herringbone and "HJ" aggregates, and chiral aggregates. The interplay between long-range Coulomb coupling and short-range charge-transfer-mediated coupling strongly depends on the aggregate architecture leading to a wide array of photophysical behaviors.
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Affiliation(s)
- Nicholas J Hestand
- Department of Chemistry , Temple University , Philadelphia , Pennsylvania 19122 , United States
| | - Frank C Spano
- Department of Chemistry , Temple University , Philadelphia , Pennsylvania 19122 , United States
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Aggarwal N, Patnaik A. Unusual Nonemissive Behavior of Rubrene J-Aggregates: A Rare Violation. J Phys Chem B 2017; 121:3190-3201. [PMID: 28334526 DOI: 10.1021/acs.jpcb.7b02072] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Structure-property correlations in rubrene (RB) colloidal J-aggregates were unravelled by steady state and time-resolved spectroscopy in conjunction with excited state density functional calculations. The RB J-aggregate with a slippage angle θ = 30.4°, estimated from the monomeric transition dipole moment directions, exhibited a broad fwhm of 1073 cm-1 and a 5 nm red-shifted absorption band carrying a transition dipole moment (M⃗λagg = 1.80 D) almost equivalent to the monomeric dye (M⃗λmon = 1.89 D). A significantly low magnitude of exciton coupling energy, ΔEexc = -358 cm-1 for the rhombic-RB colloidal J-aggregates resulted owing to the weaker electronic communication between the largely separated RB subunits (r = 7.2 Å) and a restricted exciton delocalization over the RB J-dimer (N = 2). The RB J-dimer exhibited a perfect balance between the computed singlet (2.53 eV) and the triplet (1.29 eV) exciton energies for singlet fission (SF). Supporting this, the PL decay profile of the J-aggregates revealed a delayed fluorescence, substantiating triplet pair formation via SF. The experimental evidence for the long-lived triplet formation was furthermore confirmed by its transient absorption (T1 → TN) at 530 nm. Consequently, a high probability for SF and a low probability for triplet-triplet recombination, leading to a dramatic lowering in photoluminescence quantum yield from 0.172 down to 0.035 was noted. The electronic structure calculations for the RB J-dimer followed TD-DFT-M062X/6-31G+(d,p) level of theory following integral equation formalism polarizable continuum model (IEFPCM) in water. S1 excited state for RB J-dimer was carefully analyzed using integral overlap of electron and hole density distribution (ϕ) and the defined t-indexes along all three spatial directions, and was found to be of locally excited in character.
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Affiliation(s)
- Nikhil Aggarwal
- Colloid and Interface Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, India
| | - Archita Patnaik
- Colloid and Interface Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, India
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7
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Wang X, Ritschel G, Wüster S, Eisfeld A. Open quantum system parameters for light harvesting complexes from molecular dynamics. Phys Chem Chem Phys 2015; 17:25629-41. [DOI: 10.1039/c5cp03891j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We elucidate the difference between various parameter extraction methods and demonstrate sensitivity to molecular dynamics equilibration.
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Affiliation(s)
- Xiaoqing Wang
- Max-Planck-Institut für Physik komplexer Systeme
- D-01187 Dresden
- Germany
| | - Gerhard Ritschel
- Max-Planck-Institut für Physik komplexer Systeme
- D-01187 Dresden
- Germany
| | - Sebastian Wüster
- Max-Planck-Institut für Physik komplexer Systeme
- D-01187 Dresden
- Germany
| | - Alexander Eisfeld
- Max-Planck-Institut für Physik komplexer Systeme
- D-01187 Dresden
- Germany
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8
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Dimitriev OP, Mazarchuk IA, Morozovska VY, Trischuk LI. Antenna size effect: The influence on energy transfer in the CdTe–pseudoisocyanine nanocomposite system. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.10.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Biswas S, Ahn HY, Bondar MV, Belfield KD. Two-photon absorption enhancement of polymer-templated porphyrin-based J-aggregates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1515-22. [PMID: 22188399 PMCID: PMC3260400 DOI: 10.1021/la203883k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Supramolecular structures based on organized assemblies of macrocyclic chromophores, particularly porphyrin-based dyes, have attracted widespread interest as components of molecular devices with potential applications in molecular electronics, artificial light harvesting, and pharmacology. We report the formation of J-aggregates of two porphyrin-based dyes, 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TSPP, 4) and an amino tris-sulfonate analogue (5) in water using a functionalized norbornene-based homopolymer, synthesized by ring-opening metathesis polymerization (ROMP). Ionic interactions of the cationic side chains (ammonium groups) of the polymer under acidic conditions with the negatively charged sulfonate groups of the porphyrins facilitated polymer template enhanced J-aggregation of the porphyrin dyes. J-Aggregation behavior was investigated photophysically by UV-vis absorption along with steady-state and time-resolved fluorescence studies. Two-photon absorption (2PA) was enhanced by about an order of magnitude for the J-aggregated TSPP relative to its free base. Significantly, the 2PA cross section of the polymer-templated TSPP J-aggregate was up to three times higher than the J-aggregated TSPP in the absence of the polymer template while the 2PA cross section for polymer-templated J-aggregates of 5 increased substantially, up to ca. 10,000 GM, suggesting a prominent role of polymer-templating to facilitate porphyrin aggregation and greatly enhance nonlinear absorption.
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Affiliation(s)
- Sanchita Biswas
- Department of Chemistry The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
| | - Hyo-Yang Ahn
- Department of Chemistry The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
| | | | - Kevin D. Belfield
- Department of Chemistry The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
- CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
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10
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Chan JMW, Tischler JR, Kooi SE, Bulović V, Swager TM. Synthesis of J-aggregating dibenz[a,j]anthracene-based macrocycles. J Am Chem Soc 2010; 131:5659-66. [PMID: 19326909 DOI: 10.1021/ja900382r] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several fluorescent macrocycles based on 1,3-butadiyne-bridged dibenz[a,j]anthracene subunits have been synthesized via a multistep route. The synthetic strategy involved the initial construction of a functionalized dibenz[a,j]anthracene building block, subsequent installation of free alkyne groups on one side of the polycyclic aromatic framework, and a final cyclization based on a modified Glaser coupling under high-dilution conditions. Photophysical studies on three conjugated macrocycles revealed the formation of J-aggregates in thin films, as well as in concentrated solid solutions (polyisobutylene matrix), with peak absorption and emission wavelength in the range of lambda = 460-480 nm. The characteristic red-shifting of the J-aggregate features as compared to the monomer spectra, enhancement in absorption intensities, narrowed linewidths, and minimal Stokes shift values, were all observed. We demonstrate that improvements in spectral features can be brought about by annealing the films under a solvent-saturated atmosphere, where for the best films the luminescence quantum efficiency as high as 92% was measured. This class of macrocycles represents a new category of J-aggregates that due to their high peak oscillator strength and high luminescence efficiency have the potential to be utilized in a variety of optoelectronic devices.
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Affiliation(s)
- Julian M W Chan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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11
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Sakurai T, Mizoguchi H, Yamada S, Inoue H. Proton-Transfer Reactions between 7-Hydroxycoumarin and Tertiary Amines. Formation of the Ground-State Tautomer Anion. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19961000418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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George RC, Egharevba GO, Nyokong T. Spectroscopic studies of nanostructures of negatively charged free base porphyrin and positively charged tin porphyrins. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.01.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Goswami T, Kumar SKK, Dutta A, Goswami D. Probing the Ultrafast Solution Dynamics of a Cyanine Dye in an Organic Solvent Interfaced with Water. J Phys Chem B 2009; 113:16332-6. [DOI: 10.1021/jp903753u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tapas Goswami
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
| | - S. K. Karthick Kumar
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
| | - Aveek Dutta
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
| | - Debabrata Goswami
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
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15
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Milota F, Sperling J, Nemeth A, Abramavicius D, Mukamel S, Kauffmann HF. Excitonic couplings and interband energy transfer in a double-wall molecular aggregate imaged by coherent two-dimensional electronic spectroscopy. J Chem Phys 2009; 131:054510. [DOI: 10.1063/1.3197852] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Liao B, He B, Liu R, Huang Y. Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions. Polym J 2009. [DOI: 10.1295/polymj.pj2009095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Roden J, Eisfeld A, Briggs J. The J- and H-bands of dye aggregate spectra: Analysis of the coherent exciton scattering (CES) approximation. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.07.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Zhang G, Liu M. Interfacial Assemblies of Cyanine Dyes and Gemini Amphiphiles with Rigid Spacers: Regulation and Interconversion of the Aggregates. J Phys Chem B 2008; 112:7430-7. [DOI: 10.1021/jp8005298] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guocheng Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, CAS, Beijing 100080, People’s Republic of China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, CAS, Beijing 100080, People’s Republic of China
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19
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Walczak PB, Eisfeld A, Briggs JS. Exchange narrowing of the J band of molecular dye aggregates. J Chem Phys 2008; 128:044505. [DOI: 10.1063/1.2823730] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Li H. Spectroscopic investigation of inner filter effect by magnolol solutions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 68:1263-8. [PMID: 17374565 DOI: 10.1016/j.saa.2007.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2006] [Revised: 01/28/2007] [Accepted: 02/07/2007] [Indexed: 05/14/2023]
Abstract
Spectroscopy is useful tool for aggregation studies on fluorephores. One of the major problems with this technique is that the inner filter effect becomes unavoidable since the samples are used at high concentration. In this work, our investigation on magnolol spectroscopic properties shows that the inner filter effect (IFE) of fluorescence plays a critical role in the spectra of magnolol. The strong dependence of the fluorescence parameters on the concentration accounts for the apparent experimental evidence of magnolol aggregation at high concentrations. There are some questions despite the aggregation model based on fluorescent aggregates seems to describe the behavior of the system. The mathematical correction on the emission intensities shows the linear fluorescence-concentration relationship. Furthermore, we propose a mathematic model of excitation spectrum based on the primary IFE (absorption of light of excitation wavelength), which provide a correct explanation of the unusual spectral shift and spectral narrowing in the excitation spectra of magnolol at high concentrations. The shapes of spectra are completely independent on magnolol aggregation and are due only to experimental artifacts, i.e. IFE.
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Affiliation(s)
- Hongmei Li
- Basic Science School, China Pharmaceutical University, Nanjing, China.
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21
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22
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Velarde L, Habteyes T, Grumbling ER, Pichugin K, Sanov A. Solvent resonance effect on the anisotropy of NO−(N2O)n cluster anion photodetachment. J Chem Phys 2007; 127:084302. [PMID: 17764243 DOI: 10.1063/1.2766948] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photodetachment from NO(-)(N(2)O)(n) cluster anions (n< or =7) is investigated using photoelectron imaging at 786, 532, and 355 nm. Compared to unsolvated NO(-), the photoelectron anisotropy with respect to the laser polarization direction diminishes drastically in the presence of the N(2)O solvent, especially in the 355 nm data. In contrast, a less significant anisotropy loss is observed for NO(-)(H(2)O)(n). The effect is attributed to photoelectron scattering on the solvent, which in the N(2)O case is mediated by the (2)Pi anionic resonance. No anionic resonances exist for H(2)O in the applicable photoelectron energy range, in line with the observed difference between the photoelectron images obtained with the two solvents. The momentum-transfer cross section, rather than the total scattering cross section, is argued to be an appropriate physical parameter predicting the solvent effects on the photoelectron angular distributions in these cluster anions.
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Affiliation(s)
- Luis Velarde
- Department of Chemistry, University of Arizona, Tucson, Arizona 85721-0041, USA
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23
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Chen P, Ma X, Duan P, Liu M. Chirality Amplification of Porphyrin Assemblies Exclusively Constructed from Achiral Porphyrin Derivatives. Chemphyschem 2006; 7:2419-23. [PMID: 17022096 DOI: 10.1002/cphc.200600402] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Two achiral porphyrin derivatives, 5,10,15,20-tetrakis(4-methoxyphenyl)-21H,23H-porphine (TPPOMe) and 5,10,15,20-tetrakis(4-hydroxyphenyl)-21H,23H-porphine (TPPOH), were spread onto an air/water interface. The spreading films were transferred onto solid substrates by the Langmuir-Schaefer (LS) method. Although both of the porphyrin derivatives are achiral species, the transferred LS multilayer films shows macroscopic supramolecular chirality, which is suggested to be due to the spontaneous symmetry breaking that occurs at the air/water interface. A strong CD signal is observed from the as-deposited TPPOH LS film, while a relatively weak CD signal is detected from that of TPPOMe. Interestingly, when the TPPOMe LS film was annealed in high vacuum, a significant amplification of the supramolecular chirality is observed. Atomic force microscopy observations confirm that TPPOMe form more ordered aggregates upon annealing. It is suggested that the small amount of chiral assemblies formed in the as-deposited LS film grow into larger ones following the "sergeants and soldiers" principle during the annealing process.
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Affiliation(s)
- Penglei Chen
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface, and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, PR China
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24
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Malyukin Y. Coexistence of free and self-trapped excitons in disordered J-aggregates. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pssc.200672139] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Zhang G, Zhai X, Liu M. Spacer-Controlled Aggregation and Surface Morphology of a Selenacarbocyanine Dye on Gemini Monolayers. J Phys Chem B 2006; 110:10455-60. [PMID: 16722753 DOI: 10.1021/jp060443a] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The adsorption and aggregation of a selenacarbocyanine dye (3,3-disulfopropyl-9-methyl-selenacarbocyanine, SeCy) onto Langmuir monolayers of a series of gemini amphiphiles with different methylene spacers were investigated. When the monolayers of the gemini amphiphiles were spread on the dye-containing subphase, the dye could be easily adsorbed and aggregated onto the monolayers through the electrostatic and pi-pi interaction. The dye formed complexes with gemini amphiphiles and stacked as J-aggregates in all the transferred multilayers, regardless of the structure of gemini amphiphiles. However, the surface morphologies of the complex monolayers showed a significant dependence on the spacer length of the gemini amphiphiles and the temperature of the subphase. Nanorods were observed for the complex films with spacer lengths ranged from 4 to 10 methylenes. With the temperature of the subphases increased from 20 degrees C to 30 degrees C, aligned longer nanofibers were formed instead. Although both the gemini amphiphiles and the dye were achiral, strong circular dichroism (CD) signals were observed for the transferred complex films. However, the CD signals could be just opposite in different places of the transferred films, suggesting that a resolved enantiomeric micro/nanostructure coexisted in the films. On the other hand, for the complex film of the dye with the gemini amphiphile of two methylenes spacer, neither CD signal nor ordered surface morphologies were detected in any place of the film although the dye itself stilled formed J-aggregate in the film. It was suggested that regular nanoarchitectures and resolved chiral domains could be observed only when the spacer of gemini amphiphiles is comparative to the distance between the two SO3- groups in the dye.
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Affiliation(s)
- Guocheng Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, CAS, Beijing 100080, PR China
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Spano FC, Zhao Z, Meskers SCJ. Analysis of the vibronic fine structure in circularly polarized emission spectra from chiral molecular aggregates. J Chem Phys 2004; 120:10594-604. [PMID: 15268085 DOI: 10.1063/1.1730114] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using a Frenkel-exciton model, the degree of circular polarization of the luminescence (g(lum)) from one-dimensional, helical aggregates of chromophoric molecules is investigated theoretically. The coupling between the electronic excitation and a local, intramolecular vibrational mode is taken into account. Analytical expressions for the fluorescence band shape and g(lum) are presented for the case of strong and weak electronic coupling between the chromophoric units. Results are compared to those from numerical calculations obtained using the three particle approximation. g(lum) for the 0-0 vibronic band is found to be independent of the relative strength of electronic coupling between chromophores and excitation-vibration coupling. It depends solely on the number of coherently coupled molecules. In contrast, for the higher vibronic transitions[g(lum)] decreases with decreasing strength of the electronic coupling. In the limit of strong electronic coupling, [g(lum)] is almost constant throughout the series of vibronic transitions but for weak coupling [g(lum)] becomes vanishingly small for all vibronic transitions except for the 0-0 transition. The results are interpreted in terms of dynamic localization of the excitation during the zero point vibrational motion in the excited state of the aggregate. It is concluded that circular polarization measurements provide an independent way to determine the coherence size and bandwidth of the lowest exciton state for chiral aggregates.
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Affiliation(s)
- Frank C Spano
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.
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Zhang L, Yuan J, Liu M. Supramolecular Chirality of Achiral TPPS Complexed with Chiral Molecular Films. J Phys Chem B 2003. [DOI: 10.1021/jp0355962] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li Zhang
- CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080 P. R. China
| | - Jing Yuan
- CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080 P. R. China
| | - Minghua Liu
- CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080 P. R. China
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Kanamaru N. Theory of Molecular Excitons in 1-D Crystals as Applied to a Multiple-Helix Model of Pseudoisocyanine (PIC) J Aggregates. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2003. [DOI: 10.1246/bcsj.76.891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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von Berlepsch H, Möller S, Dähne L. Optical Properties of Crystalline Pseudoisocyanine (PIC). J Phys Chem B 2001. [DOI: 10.1021/jp004581q] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hans von Berlepsch
- Institut für Chemie-Physikalische und Theoretische Chemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany, Fachbereich Physik der Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany, and Max-Planck-Institut für Kolloid und Grenzflächenforschung, D-14424 Potsdam, Germany
| | - Sven Möller
- Institut für Chemie-Physikalische und Theoretische Chemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany, Fachbereich Physik der Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany, and Max-Planck-Institut für Kolloid und Grenzflächenforschung, D-14424 Potsdam, Germany
| | - Lars Dähne
- Institut für Chemie-Physikalische und Theoretische Chemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany, Fachbereich Physik der Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany, and Max-Planck-Institut für Kolloid und Grenzflächenforschung, D-14424 Potsdam, Germany
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Egorov VV. Electron-transfer approach to the nature of the optical lineshape for molecular J-aggregates. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)00100-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kano H, Saito T, Kobayashi T. Dynamic Intensity Borrowing in Porphyrin J-Aggregates Revealed by Sub-5-fs Spectroscopy. J Phys Chem B 2000. [DOI: 10.1021/jp0026134] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hideaki Kano
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - Takashi Saito
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - Takayoshi Kobayashi
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
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Szmytkowski C. Total absolute cross section measurements for electron scattering on CS2molecules. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/20/24/012] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Marinkovic B, Szmytkowski C, Pejcev V, Filipovic D, Vuskovic L. Differential cross sections for elastic and inelastic scattering of electrons by N2O in the range from 10 to 80 eV. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/19/15/017] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zecca A, Brusa RS, Grisenti R, Oss S, Szmytkowski C. Electron-molecule absolute total cross sections: O2from 0.2 to 100 eV. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/19/20/018] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kato T, Sasaki F, Abe S, Kobayashi S. Theoretical study on the absorption spectra of pseudoisocyanine bromide (PIC-Br) molecular J-aggregates. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00008-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Katoh T, Inagaki Y, Okazaki R. Synthesis and Properties of Bismerocyanines Linked by a 1,8-Naphthylene Skeleton. Novel Solvatochromism Based on Change of Intramolecular Excitonic Coupling Mode. J Am Chem Soc 1998. [DOI: 10.1021/ja973608p] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takashi Katoh
- Contribution from the Ashigara Research Laboratories, Fuji Photo Film Co. Ltd., 210 Nakanuma, Minami-ashigara, Kanagawa 250-01, Japan, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
| | - Yoshio Inagaki
- Contribution from the Ashigara Research Laboratories, Fuji Photo Film Co. Ltd., 210 Nakanuma, Minami-ashigara, Kanagawa 250-01, Japan, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
| | - Renji Okazaki
- Contribution from the Ashigara Research Laboratories, Fuji Photo Film Co. Ltd., 210 Nakanuma, Minami-ashigara, Kanagawa 250-01, Japan, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
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Maiti NC, Mazumdar S, Periasamy N. J- and H-Aggregates of Porphyrin−Surfactant Complexes: Time-Resolved Fluorescence and Other Spectroscopic Studies. J Phys Chem B 1998. [DOI: 10.1021/jp9723372] [Citation(s) in RCA: 684] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nakul C. Maiti
- Chemical Physics Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, India
| | - Shyamalava Mazumdar
- Chemical Physics Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, India
| | - N. Periasamy
- Chemical Physics Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, India
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Renge I, Wild UP. Solvent, Temperature, and Excitonic Effects in the Optical Spectra of Pseudoisocyanine Monomer and J-Aggregates. J Phys Chem A 1997. [DOI: 10.1021/jp971371d] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Indrek Renge
- Physical Chemistry Laboratory, ETH-Zentrum, CH-8092 Zürich, Switzerland
| | - Urs P. Wild
- Physical Chemistry Laboratory, ETH-Zentrum, CH-8092 Zürich, Switzerland
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Katoh T, Ogawa K, Inagaki Y, Okazaki R. Biscyanines Linked by a 1,8-Naphthylene Skeleton: Models of Polymethine Dye Aggregates. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1997. [DOI: 10.1246/bcsj.70.2287] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Rotermund F, Weigand R, Penzkofer A. J-aggregation and disaggregation of indocyanine green in water. Chem Phys 1997. [DOI: 10.1016/s0301-0104(97)00151-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Akins DL, Özçelik S, Zhu HR, Guo C. Aggregation-Enhanced Raman Scattering of a Cyanine Dye in Homogeneous Solution. J Phys Chem A 1997. [DOI: 10.1021/jp963122f] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel L. Akins
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Serdar Özçelik
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Han-Ru Zhu
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Chu Guo
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
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Liu M, Kira A, Nakahara H. Two-Dimensional Aggregation of a Long-Chain Thiacarbocyanine Dye Monolayer on Polyanion Subphases. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp962600j] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Minghua Liu
- The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Hirosawa 2-1, Saitama, 351-01, Japan, and Faculty of Science, Saitama University, Urawa 338, Japan
| | - Akira Kira
- The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Hirosawa 2-1, Saitama, 351-01, Japan, and Faculty of Science, Saitama University, Urawa 338, Japan
| | - Hiroo Nakahara
- The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Hirosawa 2-1, Saitama, 351-01, Japan, and Faculty of Science, Saitama University, Urawa 338, Japan
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Akins DL, Özçelik S, Zhu HR, Guo C. Fluorescence Decay Kinetics and Structure of Aggregated Tetrakis(p-Sulfonatophenyl)Porphyrin. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp961013v] [Citation(s) in RCA: 152] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel L. Akins
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Serdar Özçelik
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Han-Ru Zhu
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
| | - Chu Guo
- Center for Analysis of Structures and Interfaces (CASI), Department of Chemistry, The City College of The City University of New York, New York, New York 10031
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Higgins DA, Reid PJ, Barbara PF. Structure and Exciton Dynamics in J-Aggregates Studied by Polarization-Dependent Near-Field Scanning Optical Microscopy. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp9518217] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel A. Higgins
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455
| | - Philip J. Reid
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455
| | - Paul F. Barbara
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455
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De Rossi U, Moll J, Kriwanek J, Daehne S. Influence of the N-alkyl chain length on the J-aggregation behavior of a cyanine dye. J Fluoresc 1994; 4:53-5. [DOI: 10.1007/bf01876654] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/1993] [Indexed: 10/25/2022]
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50
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Evidence for biexcitons and dynamic Stark effect in J-aggregates from femtosecond spectroscopy. Chem Phys Lett 1994. [DOI: 10.1016/0009-2614(93)e1358-n] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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