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Geißler D, Wegner KD, Fischer C, Resch-Genger U. Exploring Simple Particle-Based Signal Amplification Strategies in a Heterogeneous Sandwich Immunoassay with Optical Detection. Anal Chem 2024; 96:5078-5085. [PMID: 38498677 PMCID: PMC10993196 DOI: 10.1021/acs.analchem.3c03691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/20/2024]
Abstract
Heterogeneous sandwich immunoassays are widely used for biomarker detection in bioanalysis and medical diagnostics. The high analyte sensitivity of the current "gold standard" enzyme-linked immunosorbent assay (ELISA) originates from the signal-generating enzymatic amplification step, yielding a high number of optically detectable reporter molecules. For future point-of-care testing (POCT) and point-of-need applications, there is an increasing interest in more simple detection strategies that circumvent time-consuming and temperature-dependent enzymatic reactions. A common concept to aim for detection limits comparable to those of enzymatic amplification reactions is the usage of polymer nanoparticles (NP) stained with a large number of chromophores. We explored different simple NP-based signal amplification strategies for heterogeneous sandwich immunoassays that rely on an extraction-triggered release step of different types of optically detectable reporters. Therefore, streptavidin-functionalized polystyrene particles (PSP) are utilized as carriers for (i) the fluorescent dye coumarin 153 (C153) and (ii) hemin (hem) molecules catalyzing the luminol reaction enabling chemiluminescence (CL) detection. Additionally, (iii) NP labeling with hemin-based microperoxidase MP11 was assessed. For each amplification approach, the PSP was first systematically optimized regarding size, loading concentration, and surface chemistry. Then, for an immunoassay for the inflammation marker C-reactive protein (CRP), the analyte sensitivity achievable with optimized PSP systems was compared with the established ELISA concept for photometric and CL detection. Careful optimization led to a limit of detection (LOD) of 0.1 ng/mL for MP11-labeled PSP and CL detection, performing similarly well to a photometric ELISA (0.13 ng/mL), which demonstrates the huge potential of our novel assay concept.
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Affiliation(s)
| | | | | | - Ute Resch-Genger
- Division Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
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2
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Fainberg BD, Osipov VA. Effects of Electron-Vibration Interaction in Polariton Luminescence: Non-Markovian Fano Resonances and Hot Luminescence. J Phys Chem A 2022; 126:2761-2777. [PMID: 35483074 DOI: 10.1021/acs.jpca.1c10405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have developed a non-Markovian theory of the polariton luminescence taking the molecular vibrations into account. The calculations were performed in the polariton basis. We have shown that the frequency shift and the polariton spectral line broadening strongly depend on the frequency-dependent exciton contribution to the polariton. In the single-mode microcavity, our non-Markovian theory predicts the Fano resonances in the polariton luminescence and also narrowing of the spectral lines with the increase of the total number of molecules in the case of the intramolecular nature of the low-frequency vibrations. The theory enables us to consider a nonequilibrium (hot) exciton-polariton luminescence similar to the hot luminescence of molecules and crystals. This opens a way for its observation in organic-based nanodevices.
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Affiliation(s)
- B D Fainberg
- Faculty of Sciences, Holon Institute of Technology, 52 Golomb Street, Holon 5810201, Israel.,School of Chemistry, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - V Al Osipov
- Faculty of Sciences, Holon Institute of Technology, 52 Golomb Street, Holon 5810201, Israel
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3
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Luo Y, Chen G, Zhang Y, Zhang L, Yu Y, Kong F, Tian X, Zhang Y, Shan C, Luo Y, Yang J, Sandoghdar V, Dong Z, Hou JG. Electrically Driven Single-Photon Superradiance from Molecular Chains in a Plasmonic Nanocavity. PHYSICAL REVIEW LETTERS 2019; 122:233901. [PMID: 31298910 DOI: 10.1103/physrevlett.122.233901] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Indexed: 05/21/2023]
Abstract
We demonstrate single-photon superradiance from artificially constructed nonbonded zinc-phthalocyanine molecular chains of up to 12 molecules. We excite the system via electron tunneling in a plasmonic nanocavity and quantitatively investigate the interaction of the localized plasmon with single-exciton superradiant states resulting from dipole-dipole coupling. Dumbbell-like patterns obtained by subnanometer resolved spectroscopic imaging disclose the coherent nature of the coupling associated with superradiant states while second-order photon correlation measurements demonstrate single-photon emission. The combination of spatially resolved spectral measurements with theoretical considerations reveals that nanocavity plasmons dramatically modify the linewidth and intensity of emission from the molecular chains, but they do not dictate the intrinsic coherence of the superradiant states. Our studies shed light on the optical properties of molecular collective states and their interaction with nanoscopically localized plasmons.
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Affiliation(s)
- Yang Luo
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Gong Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China
| | - Yang Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Li Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yunjie Yu
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Fanfang Kong
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaojun Tian
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yao Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chongxin Shan
- School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China
| | - Yi Luo
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jinlong Yang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Vahid Sandoghdar
- Max Planck Institute for the Science of Light, Erlangen 91058, Germany
| | - Zhenchao Dong
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - J G Hou
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
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4
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Cannon BL, Patten LK, Kellis DL, Davis PH, Lee J, Graugnard E, Yurke B, Knowlton WB. Large Davydov Splitting and Strong Fluorescence Suppression: An Investigation of Exciton Delocalization in DNA-Templated Holliday Junction Dye Aggregates. J Phys Chem A 2018; 122:2086-2095. [PMID: 29420037 DOI: 10.1021/acs.jpca.7b12668] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Exciton delocalization in dye aggregate systems is a phenomenon that is revealed by spectral features, such as Davydov splitting, J- and H-aggregate behavior, and fluorescence suppression. Using DNA as an architectural template to assemble dye aggregates enables specific control of the aggregate size and dye type, proximal and precise positioning of the dyes within the aggregates, and a method for constructing large, modular two- and three-dimensional arrays. Here, we report on dye aggregates, organized via an immobile Holliday junction DNA template, that exhibit large Davydov splitting of the absorbance spectrum (125 nm, 397.5 meV), J- and H-aggregate behavior, and near-complete suppression of the fluorescence emission (∼97.6% suppression). Because of the unique optical properties of the aggregates, we have demonstrated that our dye aggregate system is a viable candidate as a sensitive absorbance and fluorescence optical reporter. DNA-templated aggregates exhibiting exciton delocalization may find application in optical detection and imaging, light-harvesting, photovoltaics, optical information processing, and quantum computing.
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Affiliation(s)
- Brittany L Cannon
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
| | - Lance K Patten
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
| | - Donald L Kellis
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
| | - Paul H Davis
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
| | - Jeunghoon Lee
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
| | - Elton Graugnard
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
| | - Bernard Yurke
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
| | - William B Knowlton
- Micron School of Materials Science & Engineering, ‡Department of Chemistry & Biochemistry, and §Department of Electrical & Computer Engineering, Boise State University , Boise, Idaho 83725, United States
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5
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Rajeeva BB, Lin L, Perillo EP, Peng X, Yu WW, Dunn AK, Zheng Y. High-Resolution Bubble Printing of Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16725-16733. [PMID: 28452214 PMCID: PMC5866051 DOI: 10.1021/acsami.7b04881] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Semiconductor quantum dots (QDs) feature excellent properties, such as high quantum efficiency, tunable emission frequency, and good fluorescence stability. Incorporation of QDs into new devices relies upon high-resolution and high-throughput patterning techniques. Herein, we report a new printing technique known as bubble printing (BP), which exploits a light-generated microbubble at the interface of colloidal QD solution and a substrate to directly write QDs into arbitrary patterns. With the uniform plasmonic hot spot distribution for high bubble stability and the optimum light-scanning parameters, we have achieved full-color QD printing with submicron resolution (650 nm), high throughput (scanning rate of ∼10-2 m/s), and high adhesion of the QDs to the substrates. The printing parameters can be optimized to further control the fluorescence properties of the patterned QDs, such as emission wavelength and lifetime. The patterning of QDs on flexible substrates further demonstrates the wide applicability of this new technique. Thus, BP technique addresses the barrier of achieving a widely applicable, high-throughput and user-friendly patterning technique in the submicrometer regime, along with simultaneous fluorescence modification capability.
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Affiliation(s)
| | - Linhan Lin
- Materials Science and Engineering Program, Department of Mechanical Engineering and
| | - Evan P. Perillo
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Xiaolei Peng
- Materials Science and Engineering Program, Department of Mechanical Engineering and
| | - William W. Yu
- Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States
| | - Andrew K Dunn
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yuebing Zheng
- Materials Science and Engineering Program, Department of Mechanical Engineering and
- Corresponding Author:
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6
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Ke Y, Zhao Y. Hierarchy of stochastic Schrödinger equation towards the calculation of absorption and circular dichroism spectra. J Chem Phys 2017; 146:174105. [DOI: 10.1063/1.4982230] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Bloemsma EA, Vlaming SM, Malyshev VA, Knoester J. Signature of anomalous exciton localization in the optical response of self-assembled organic nanotubes. PHYSICAL REVIEW LETTERS 2015; 114:156804. [PMID: 25933330 DOI: 10.1103/physrevlett.114.156804] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Indexed: 05/03/2023]
Abstract
We show that the disorder scaling of the low-temperature optical absorption linewidth of tubular molecular assemblies sharply contrasts with that known for one-dimensional aggregates. The difference can be explained by an anomalous localization of excitons, which arises from the combination of long-range intermolecular interactions and the tube's higher-dimensional geometry. As a result, the exciton density of states near the band bottom drops to zero, leading to a strong suppression of exciton localization. Our results explain the strong linear dichroism and weak exciton-exciton scattering in tubular J aggregates observed in experiments and suggest that for nanoscale wirelike applications a tubular shape is to be preferred over a truly one-dimensional chain.
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Affiliation(s)
- E A Bloemsma
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - S M Vlaming
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - V A Malyshev
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - J Knoester
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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8
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Han J, Zhang H, Abramavicius D. Exchange narrowing and exciton delocalization in disordered J aggregates: Simulated peak shapes in the two dimensional spectra. J Chem Phys 2013; 139:034313. [DOI: 10.1063/1.4812927] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Vlaming SM, Malyshev VA, Eisfeld A, Knoester J. Subdiffusive exciton motion in systems with heavy-tailed disorder. J Chem Phys 2013; 138:214316. [DOI: 10.1063/1.4808155] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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10
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Würthner F, Kaiser TE, Saha-Möller CR. J-Aggregate: von ihrer zufälligen Entdeckung bis zum gezielten supramolekularen Aufbau funktioneller Farbstoffmaterialien. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201002307] [Citation(s) in RCA: 252] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Würthner F, Kaiser TE, Saha-Möller CR. J-Aggregates: From Serendipitous Discovery to Supramolecular Engineering of Functional Dye Materials. Angew Chem Int Ed Engl 2011; 50:3376-410. [DOI: 10.1002/anie.201002307] [Citation(s) in RCA: 1790] [Impact Index Per Article: 137.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Indexed: 11/08/2022]
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12
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Roden J, Strunz WT, Eisfeld A. Non-Markovian quantum state diffusion for absorption spectra of molecular aggregates. J Chem Phys 2011; 134:034902. [DOI: 10.1063/1.3512979] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Roden J, Eisfeld A. Anomalous strong exchange narrowing in excitonic systems. J Chem Phys 2011; 134:034901. [PMID: 21261385 DOI: 10.1063/1.3528718] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Jan Roden
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straβe 38, D-01187 Dresden, Germany.
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14
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Eisfeld A, Vlaming SM, Malyshev VA, Knoester J. Excitons in molecular aggregates with Lévy-type disorder: anomalous localization and exchange broadening of optical spectra. PHYSICAL REVIEW LETTERS 2010; 105:137402. [PMID: 21230810 DOI: 10.1103/physrevlett.105.137402] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Indexed: 05/30/2023]
Abstract
We predict the existence of exchange broadening of optical line shapes in disordered molecular aggregates and a nonuniversal disorder scaling of the localization characteristics of the collective electronic excitations (excitons). These phenomena occur for heavy-tailed Lévy disorder distributions with divergent second moments-distributions that play a role in many branches of physics. Our results sharply contrast with aggregate models commonly analyzed, where the second moment is finite. They bear a relevance for other types of collective excitations as well.
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Affiliation(s)
- A Eisfeld
- Max Planck Institute for Physics of Complex Systems, Dresden, Germany
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15
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Guthmuller J, Zutterman F, Champagne B. Multimode simulation of dimer absorption spectra from first principles calculations: Application to the 3,4,9,10-perylenetetracarboxylic diimide dimer. J Chem Phys 2009; 131:154302. [DOI: 10.1063/1.3245403] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [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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17
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Roden J, Eisfeld A, Wolff W, Strunz WT. Influence of complex exciton-phonon coupling on optical absorption and energy transfer of quantum aggregates. PHYSICAL REVIEW LETTERS 2009; 103:058301. [PMID: 19792538 DOI: 10.1103/physrevlett.103.058301] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Indexed: 05/28/2023]
Abstract
We present a theory that efficiently describes the quantum dynamics of an electronic excitation that is coupled to a continuous, highly structured phonon environment. Based on a stochastic approach to non-Markovian open quantum systems, we develop a dynamical framework that allows us to handle realistic systems where a fully quantum treatment is desired yet the usual approximation schemes fail. The capability of the method is demonstrated by calculating spectra and energy transfer dynamics of mesoscopic molecular aggregates, elucidating the transition from fully coherent to incoherent transfer.
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Affiliation(s)
- Jan Roden
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, D-01187 Dresden, Germany
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18
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Roden J, Schulz G, Eisfeld A, Briggs J. Electronic energy transfer on a vibronically coupled quantum aggregate. J Chem Phys 2009; 131:044909. [DOI: 10.1063/1.3176513] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Tranca DC, Neufeld AA. On the structure of hot absorption spectra of polyatomic molecules: Solvent effect on the transition energy gap. J Chem Phys 2009; 130:141102. [DOI: 10.1063/1.3116786] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Riehle FS, Bienert R, Thomann R, Urban GA. Blue luminescence and superstructures from magic size clusters of CdSe. NANO LETTERS 2009; 9:514-518. [PMID: 19140702 DOI: 10.1021/nl080150o] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this letter, we present a low-temperature synthesis route revealing a new type of ultrasmall CdSe nanoparticle family with exceptional narrow blue emissions between 437 and 456 nm and full width at half-maxima below 20 nm. Transmission electron microscopy characterization shows the uniformity of the nanoparticles, which have a diameter of 1.6 nm. After surface modification, the spherical particles assemble into nanowires, demonstrating their potential as building blocks for the generation of highly ordered superstructures. They can also be used as single source precursors for the synthesis of CdSe nanocrystals.
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Affiliation(s)
- Frank S Riehle
- University of Freiburg, Stefan Meier Strasse 21, D-79104 Freiburg, Germany
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21
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Guthmuller J, Zutterman F, Champagne B. Prediction of Vibronic Coupling and Absorption Spectra of Dimers from Time-Dependent Density Functional Theory: The Case of a Stacked Streptocyanine. J Chem Theory Comput 2008; 4:2094-100. [DOI: 10.1021/ct8003047] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julien Guthmuller
- Laboratoire de Chimie Théorique Appliquée, Facultés Universitaires Notre-Dame de la Paix, Rue de Bruxelles 61, B-5000 Namur, Belgium, and Agfa-Gevaert N.V., Septestraat 27, B-2640 Mortsel, Belgium
| | - Freddy Zutterman
- Laboratoire de Chimie Théorique Appliquée, Facultés Universitaires Notre-Dame de la Paix, Rue de Bruxelles 61, B-5000 Namur, Belgium, and Agfa-Gevaert N.V., Septestraat 27, B-2640 Mortsel, Belgium
| | - Benoît Champagne
- Laboratoire de Chimie Théorique Appliquée, Facultés Universitaires Notre-Dame de la Paix, Rue de Bruxelles 61, B-5000 Namur, Belgium, and Agfa-Gevaert N.V., Septestraat 27, B-2640 Mortsel, Belgium
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22
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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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23
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Klugkist JA, Malyshev VA, Knoester J. Scaling and universality in the optics of disordered exciton chains. PHYSICAL REVIEW LETTERS 2008; 100:216403. [PMID: 18518623 DOI: 10.1103/physrevlett.100.216403] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2008] [Indexed: 05/26/2023]
Abstract
The joint probability distribution of exciton energies and transition dipole moments determines a variety of optical observables in disordered exciton systems. We demonstrate numerically that this distribution obeys a one-parameter scaling, originating from the fact that both the energy and the dipole moment are determined by the number of coherently bound molecules. A universal underlying distribution is found, which is identical for uncorrelated Gaussian disorder in the molecular transition energies or in the intermolecular transfer interactions. The universality breaks down for disorder in the transfer interactions resulting from variations in the molecular positions. We suggest the possibility to probe the joint distribution by means of single-molecule spectroscopy.
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Affiliation(s)
- J A Klugkist
- Centre for Theoretical Physics and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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24
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Seibt J, Dehm V, Würthner F, Engel V. Circular dichroism spectroscopy of small molecular aggregates: Dynamical features and size effects. J Chem Phys 2008; 128:204303. [DOI: 10.1063/1.2927301] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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25
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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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26
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27
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Eisfeld A. A simple method to obtain information on the conformation of dipole–dipole coupled dimers. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.07.072] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Eisfeld A, Kniprath R, Briggs JS. Theory of the absorption and circular dichroism spectra of helical molecular aggregates. J Chem Phys 2007; 126:104904. [PMID: 17362084 DOI: 10.1063/1.2464097] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A theory of the electronic circular dichroism (CD) and optical rotatory dispersion (ORD) of infinite aggregates exhibiting cylindrical symmetry is presented in which, to the authors' knowledge, for the first time vibrational structure is included explicitly. It is shown that, with the coherent exciton scattering approximation in the Green function approach, the detailed vibrational structure of the aggregate absorption. CD and ORD bands can be calculated from a knowledge of the electronic coupling and the monomer absorption line shape alone. Detailed model calculations for a single helix are made and the results are used to expose the origin of different spectral features. A good reproduction of experimental J-aggregate spectra is obtained, using the same electronic interaction to fit both absorption and CD spectral line shapes. The theory allows some prediction of aggregate geometry to be made, but it is shown that an unambiguous geometrical assignment can only be made where experimental spectra for light of different propagation directions with respect to the cylinder axis are available.
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Affiliation(s)
- A Eisfeld
- Theoretical Quantum Dynamics, University of Freiburg, Hermann-Herder-Strasse 3, D-79104 Freiburg, Germany.
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Seibt J, Lohr A, Würthner F, Engel V. Circular dichroism and absorption spectroscopy of merocyanine dimer aggregates: molecular properties and exciton transfer dynamics from time-dependent quantum calculations. Phys Chem Chem Phys 2007; 9:6214-8. [DOI: 10.1039/b712155e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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