51
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Preiß J, Jäger M, Rau S, Dietzek B, Popp J, Martínez T, Presselt M. How Does Peripheral Functionalization of Ruthenium(II)-Terpyridine Complexes Affect Spatial Charge Redistribution after Photoexcitation at the Franck-Condon Point? Chemphyschem 2015; 16:1395-404. [DOI: 10.1002/cphc.201500223] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Indexed: 02/06/2023]
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52
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Schindler J, Kupfer S, Wächtler M, Guthmuller J, Rau S, Dietzek B. Photophysics of a Ruthenium 4H-Imidazole Panchromatic Dye in Interaction with Titanium Dioxide. Chemphyschem 2015; 16:1061-70. [DOI: 10.1002/cphc.201402856] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Indexed: 11/11/2022]
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53
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Braumüller M, Schulz M, Sorsche D, Pfeffer M, Schaub M, Popp J, Park BW, Hagfeldt A, Dietzek B, Rau S. Synthesis and characterization of an immobilizable photochemical molecular device for H2-generation. Dalton Trans 2015; 44:5577-86. [DOI: 10.1039/c4dt03730h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The immobilizable photocatalyst (4) was synthesized and successfully applied in visible-light-driven hydrogen-generation experiments, supporting its applicability in photoelectrosynthesis cells.
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Affiliation(s)
| | - Martin Schulz
- Institute of Photonic Technology (IPHT) Jena e. V
- D-07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
| | | | | | - Markus Schaub
- Universität Ulm
- Anorganische Chemie I
- D-89081 Ulm
- Germany
| | - Jürgen Popp
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
- D-07743 Jena
- Germany
| | - Byung-Wook Park
- Department of Chemistry-Ångström
- Uppsala University
- SE-751 20 Uppsala
- Sweden
| | - Anders Hagfeldt
- Laboratory for Photomolecular Science (LSPM)
- Swiss Federal Institute of Technology at Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
| | - Benjamin Dietzek
- Institute of Photonic Technology (IPHT) Jena e. V
- D-07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
| | - Sven Rau
- Universität Ulm
- Anorganische Chemie I
- D-89081 Ulm
- Germany
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54
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Latorre F, Guthmuller J, Marquetand P. A spectroscopic study of the cis/trans-isomers of penta-2,4-dienoic acid attached to gold nanoclusters. Phys Chem Chem Phys 2015; 17:7648-58. [DOI: 10.1039/c4cp05280c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We simulate how one can spectroscopically discriminate between cis/trans isomers of a molecular switch attached to gold nanoclusters.
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Affiliation(s)
- Federico Latorre
- Institute of Physical Chemistry
- University of Jena
- 07743 Jena
- Germany
- Institute of Theoretical Chemistry
| | - Julien Guthmuller
- Faculty of Applied Physics and Mathematics
- Gdansk University of Technology
- 80233 Gdansk
- Poland
| | - Philipp Marquetand
- Institute of Theoretical Chemistry
- University of Vienna
- 1090 Vienna
- Austria
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55
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Baiardi A, Bloino J, Barone V. A general time-dependent route to resonance-Raman spectroscopy including Franck-Condon, Herzberg-Teller and Duschinsky effects. J Chem Phys 2014; 141:114108. [PMID: 25240346 PMCID: PMC4608049 DOI: 10.1063/1.4895534] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a new formulation of the time-dependent theory of Resonance-Raman spectroscopy (TD-RR). Particular attention has been devoted to the generality of the framework and to the possibility of including different effects (Duschinsky mixing, Herzberg-Teller contributions). Furthermore, the effects of different harmonic models for the intermediate electronic state are also investigated. Thanks to the implementation of the TD-RR procedure within a general-purpose quantum-chemistry program, both solvation and leading anharmonicity effects have been included in an effective way. The reliability and stability of our TD-RR implementation are validated against our previously proposed and well-tested time-independent procedure. Practical applications are illustrated with some closed- and open-shell medium-size molecules (anthracene, phenoxyl radical, benzyl radical) and the simulated spectra are compared to the experimental results. More complex and larger systems, not limited to organic compounds, can be also studied, as shown for the case of Tris(bipyridine)ruthenium(II) chloride.
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Affiliation(s)
- Alberto Baiardi
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Julien Bloino
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Vincenzo Barone
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
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56
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Meyer-Ilse J, Bauroth S, Bräutigam M, Schmitt M, Popp J, Beckert R, Rockstroh N, Pilz TD, Monczak K, Heinemann FW, Rau S, Dietzek B. Modified bibenzimidazole ligands as spectator ligands in photoactive molecular functional Ru-polypyridine units? Implications from spectroscopy. Dalton Trans 2014; 43:17659-65. [DOI: 10.1039/c4dt01399a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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57
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Stephenson M, Reichardt C, Pinto M, Wächtler M, Sainuddin T, Shi G, Yin H, Monro S, Sampson E, Dietzek B, McFarland SA. Ru(II) dyads derived from 2-(1-pyrenyl)-1H-imidazo[4,5-f][1,10]phenanthroline: versatile photosensitizers for photodynamic applications. J Phys Chem A 2014; 118:10507-21. [PMID: 24927113 DOI: 10.1021/jp504330s] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Combining the best attributes of organic photosensitizers with those of coordination complexes is an elegant way to achieve prolonged excited state lifetimes in Ru(II) dyads. Not only do their reduced radiative and nonradiative rates provide ample time for photosensitization of reactive oxygen species at low oxygen tension but they also harness the unique properties of (3)IL states that can act as discrete units or in concert with (3)MLCT states. The imidazo[4,5-f][1,10]phenanthroline framework provides a convenient tether for linking π-expansive ligands such as pyrene to a Ru(II) scaffold, and the stabilizing coligands can fine-tune the chemical and biological properties of these bichromophoric systems. The resulting dyads described in this study exhibited nanomolar light cytotoxicities against cancer cells with photocytotoxicity indices exceeding 400 for some coligands employed. This potency extended to bacteria, where concentrations as low as 10 nM destroyed 75% of a bacterial population. Notably, these dyads remained extremely active against biofilm with light photocytotoxicities against these more resistant bacterial populations in the 10-100 nM regime. The results from this study demonstrate the versatility of these highly potent photosensitizers in destroying both cancer and bacterial cells and expand the scope of compounds that utilize low-lying (3)IL states for photobiological applications.
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Affiliation(s)
- Mat Stephenson
- Department of Chemistry, Acadia University , Wolfville, NS B4P 2R6, Canada
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58
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Pfeffer MG, Zedler L, Kupfer S, Paul M, Schwalbe M, Peuntinger K, Guldi DM, Guthmuller J, Popp J, Gräfe S, Dietzek B, Rau S. Tuning of photocatalytic activity by creating a tridentate coordination sphere for palladium. Dalton Trans 2014; 43:11676-86. [DOI: 10.1039/c4dt01034e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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59
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La Porta FA, Ramos PH, de Resende EC, Guerreiro MC, Giacoppo JO, Ramalho TC, Sambrano JR, Andrés J, Longo E. Structural, electronic and optical properties of Fe(III) complex with pyridine-2,6-dicarboxylic acid: A combined experimental and theoretical study. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.03.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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60
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Baxter JB, Richter C, Schmuttenmaer CA. Ultrafast Carrier Dynamics in Nanostructures for Solar Fuels. Annu Rev Phys Chem 2014; 65:423-47. [DOI: 10.1146/annurev-physchem-040513-103742] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Sunlight can be used to drive chemical reactions to produce fuels that store energy in chemical bonds. These fuels, such as hydrogen from splitting water, have much larger energy density than do electrical storage devices. The efficient conversion of clean, sustainable solar energy using photoelectrochemical and photocatalytic systems requires precise control over the thermodynamics, kinetics, and structural aspects of materials and molecules. Generation, thermalization, trapping, interfacial transfer, and recombination of photoexcited charge carriers often occur on femtosecond to picosecond timescales. These short timescales limit the transport of photoexcited carriers to nanometer-scale distances, but nanostructures with high surface-to-volume ratios can enable both significant light absorption and high quantum efficiency. This review highlights the importance of understanding ultrafast carrier dynamics for the generation of solar fuels, including case studies on colloidal nanostructures, nanostructured photoelectrodes, and photoelectrodes sensitized with molecular chromophores and catalysts.
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Affiliation(s)
- Jason B. Baxter
- Drexel University, Department of Chemical and Biological Engineering, Philadelphia, Pennsylvania 19104
| | - Christiaan Richter
- Rochester Institute of Technology, Department of Chemical Engineering, Rochester, New York 14623
| | - Charles A. Schmuttenmaer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516-7394
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61
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Zedler L, Kupfer S, de Moraes IR, Wächtler M, Beckert R, Schmitt M, Popp J, Rau S, Dietzek B. Trapped in Imidazole: How to Accumulate Multiple Photoelectrons on a Black-Absorbing Ruthenium Complex. Chemistry 2014; 20:3793-9. [DOI: 10.1002/chem.201304937] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Indexed: 11/08/2022]
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62
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Kupfer S, Zedler L, Guthmuller J, Bode S, Hager MD, Schubert US, Popp J, Gräfe S, Dietzek B. Self-healing mechanism of metallopolymers investigated by QM/MM simulations and Raman spectroscopy. Phys Chem Chem Phys 2014; 16:12422-32. [DOI: 10.1039/c4cp00562g] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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63
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Wächtler M, Maiuri M, Brida D, Popp J, Rau S, Cerullo G, Dietzek B. Utilizing Ancillary Ligands to Optimize the Photophysical Properties of 4H-Imidazole Ruthenium Dyes. Chemphyschem 2013; 14:2973-83. [DOI: 10.1002/cphc.201300383] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Indexed: 11/09/2022]
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64
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Qiu Z, Zhang M, Wu DY, Ding SY, Zuo QQ, Huang YF, Shen W, Lin XD, Tian ZQ, Mao BW. Raman spectroscopic investigation on TiO2-N719 dye interfaces using Ag@TiO2 nanoparticles and potential correlation strategies. Chemphyschem 2013; 14:2217-24. [PMID: 23824871 DOI: 10.1002/cphc.201300381] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 05/25/2013] [Indexed: 11/10/2022]
Abstract
Herein, we employ Ag@TiO2 core-shell nanoparticles for surface-enhanced Raman scattering (SERS) investigations of TiO2-N719 dye interfaces. In situ electrochemical SERS investigations of the Ag@TiO2-N719 interaction are systematically carried out under a series of electrode-potential controls. By comparing the potential dependence of resonant and pre-resonant SERS spectra recorded with different laser excitations, bidentate carboxylate linkage is considered to be involved in N719 adsorption on TiO2. Meanwhile, SCN ligand shows obvious interactions with TiO2, and their role in the adsorption and orientation of N719 on TiO2 should not be underestimated. The in situ SERS spectra of Ag@TiO2 show a clear bell-shaped intensity-potential relation for the major bands of N719. A molecule-to-TiO2 charge-transfer resonance is tentatively attributed to account for such a phenomenon. Under the influence of such a charge-transfer resonance, valuable information about the N719-TiO2 interaction as well as the intramolecular deformation of N719 is obtained.
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Affiliation(s)
- Zhi Qiu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
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65
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Wächtler M, Bräutigam M, Popp J, Dietzek B. Mechanism of protonation induced changes in Raman spectra of a trisheteroleptic ruthenium complex revealed by DFT calculations. RSC Adv 2013. [DOI: 10.1039/c3ra00157a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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66
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Kupfer S, Guthmuller J, González L. An Assessment of RASSCF and TDDFT Energies and Gradients on an Organic Donor–Acceptor Dye Assisted by Resonance Raman Spectroscopy. J Chem Theory Comput 2012; 9:543-54. [DOI: 10.1021/ct3009057] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephan Kupfer
- Institute for Physical Chemistry,
Friedrich-Schiller University
Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Julien Guthmuller
- Faculty of Applied Physics and
Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80233
Gdansk, Poland
| | - Leticia González
- Institute
of Theoretical Chemistry,
University of Vienna, Währinger Str. 17, 1090 Vienna, Austria
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67
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Ma H, Liu J, Liang W. Time-Dependent Approach to Resonance Raman Spectra Including Duschinsky Rotation and Herzberg–Teller Effects: Formalism and Its Realistic Applications. J Chem Theory Comput 2012; 8:4474-82. [DOI: 10.1021/ct300640c] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Huili Ma
- Hefei National Laboratory for Physical Science
at Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, People's
Republic of China
| | - Jie Liu
- Hefei National Laboratory for Physical Science
at Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, People's
Republic of China
| | - WanZhen Liang
- Department
of Chemistry, Xiamen University, Xiamen
361005, People's Republic of China
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68
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Schulz M, Karnahl M, Schwalbe M, Vos JG. The role of the bridging ligand in photocatalytic supramolecular assemblies for the reduction of protons and carbon dioxide. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.016] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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69
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Bräutigam M, Schulz M, Inglis J, Popp J, Vos JG, Dietzek B. Resonance-Raman microspectroscopy for quality assurance of dye-sensitized NiOx films with respect to dye desorption kinetics in water. Phys Chem Chem Phys 2012; 14:15185-90. [DOI: 10.1039/c2cp42938a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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70
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Grosser K, Zedler L, Schmitt M, Dietzek B, Popp J, Pohnert G. Disruption-free imaging by Raman spectroscopy reveals a chemical sphere with antifouling metabolites around macroalgae. BIOFOULING 2012; 28:687-96. [PMID: 22783962 DOI: 10.1080/08927014.2012.700306] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Investigations of the surface chemistry of marine organisms are essential to understand their chemically mediated interactions with fouling organisms. In this context, the concentration of natural products in the immediate vicinity of algal surfaces, as well as their biological activity, are of particular importance. However, due to lack of appropriate methods, the distribution of compounds within the chemical sphere around marine algae is unknown. This study demonstrates the suitability of confocal resonance Raman microspectroscopy for the determination of metabolites around algal surfaces with a micrometer resolution. The spatial distribution of carotenoids in the diffusion boundary layer of the brown alga Fucus vesiculosus and the green alga Ulva sp. was determined using the disruption-free optical method. A gradient of carotenoids was determined within 0 to 150 μm from the surface of the algae, thereby demonstrating the release of the non-polar metabolites involved in antifouling processes. The differences in the carotenoid composition of the brown and green algae were reflected in the spectra. Resonance Raman microspectroscopy also allowed visualization of the lateral distribution of fucoxanthin on the algal surface and localization of concentration maxima within a 50 × 50 μm(2) area. The results from this work show clearly that established dipping techniques suitable for the extraction of the diffusion boundary layer of macroalgae only provide an average of the local strongly variable concentrations of metabolites on algal surfaces.
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Affiliation(s)
- Katharina Grosser
- IAAC, Bioorganic Analytics, Friedrich Schiller University Jena, Lessingstr. 8, Jena, 07743, Germany.
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