1
|
Behnam MAM, Basché T, Klein CDP. 2,2'-Bithiophene as sensor tag for ligand-protein binding assays based on Förster resonance energy transfer. Anal Biochem 2023; 682:115335. [PMID: 37777080 DOI: 10.1016/j.ab.2023.115335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/15/2023] [Accepted: 09/27/2023] [Indexed: 10/02/2023]
Abstract
Ligand-protein binding assays based on intrinsic protein fluorescence are straightforward, inexpensive methods to study ligand-protein interactions. However, their applicability is limited to ligands that can interfere with protein emission. In this Note, we describe the applicability of 2,2'-bithiophene as a FRET-based sensor tag, that can be incorporated into high-affinity ligands to generate target-specific compounds able to quench protein fluorescence upon binding. The generated ligands were assessed in different assay designs. Considerations to account for possible sources of interference with the assay readout are addressed, besides interpretation of the obtained results.
Collapse
Affiliation(s)
- Mira A M Behnam
- Medicinal Chemistry, Institute of Pharmacy and Molecular Biotechnology IPMB, Heidelberg University, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
| | - Thomas Basché
- Department of Chemistry, Johannes Gutenberg-University, Mainz, Germany
| | - Christian D P Klein
- Medicinal Chemistry, Institute of Pharmacy and Molecular Biotechnology IPMB, Heidelberg University, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany.
| |
Collapse
|
2
|
Stendardo E, Avila Ferrer F, Santoro F, Improta R. The absorption and emission spectra in solution of oligothiophene-based push–pull biomarkers: a PCM/TD-DFT vibronic study. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1899-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
3
|
Hubert M, Hedegård ED, Jensen HJA. Investigation of Multiconfigurational Short-Range Density Functional Theory for Electronic Excitations in Organic Molecules. J Chem Theory Comput 2016; 12:2203-13. [DOI: 10.1021/acs.jctc.5b01141] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mickaël Hubert
- Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Erik D. Hedegård
- Laboratorium
für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Hans Jørgen Aa. Jensen
- Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| |
Collapse
|
4
|
Laurent AD, Adamo C, Jacquemin D. Dye chemistry with time-dependent density functional theory. Phys Chem Chem Phys 2015; 16:14334-56. [PMID: 24548975 DOI: 10.1039/c3cp55336a] [Citation(s) in RCA: 233] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this perspective, we present an overview of the determination of excited-state properties of "real-life" dyes, and notably of their optical absorption and emission spectra, performed during the last decade with time-dependent density functional theory (TD-DFT). We discuss the results obtained with both vertical and adiabatic (vibronic) approximations, choosing relevant examples for several series of dyes. These examples include reproducing absorption wavelengths of numerous families of coloured molecules, understanding the specific band shape of amino-anthraquinones, optimising the properties of dyes used in solar cells, mimicking the fluorescence wavelengths of fluorescent brighteners and BODIPY dyes, studying optically active biomolecules and photo-induced proton transfer, as well as improving the properties of photochromes.
Collapse
Affiliation(s)
- Adèle D Laurent
- Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation (CEISAM), UMR CNRS no. 6230, BP 92208, Université de Nantes, 2, Rue de la Houssinière, 44322 Nantes, Cedex 3, France.
| | | | | |
Collapse
|
5
|
Hedegård ED, Olsen JMH, Knecht S, Kongsted J, Jensen HJA. Polarizable embedding with a multiconfiguration short-range density functional theory linear response method. J Chem Phys 2015; 142:114113. [DOI: 10.1063/1.4914922] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Erik Donovan Hedegård
- Laboratorium fur Physikalische Chemie, ETH Zürich, Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Jógvan Magnus Haugaard Olsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
- Laboratory of Computational Chemistry and Biochemistry, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Stefan Knecht
- Laboratorium fur Physikalische Chemie, ETH Zürich, Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Jacob Kongsted
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Hans Jørgen Aagaard Jensen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| |
Collapse
|
6
|
Vogt RA, Crespo-Hernández CE. Conformational Control in the Population of the Triplet State and Photoreactivity of Nitronaphthalene Derivatives. J Phys Chem A 2013; 117:14100-8. [DOI: 10.1021/jp4101587] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R. A. Vogt
- Department of
Chemistry and Center for Chemical
Dynamics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Carlos E. Crespo-Hernández
- Department of
Chemistry and Center for Chemical
Dynamics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| |
Collapse
|
7
|
Hedegård ED, Heiden F, Knecht S, Fromager E, Jensen HJA. Assessment of charge-transfer excitations with time-dependent, range-separated density functional theory based on long-range MP2 and multiconfigurational self-consistent field wave functions. J Chem Phys 2013; 139:184308. [DOI: 10.1063/1.4826533] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
8
|
Della Sala F, Fabiano E. Accurate singlet and triplet excitation energies using the Localized Hartree–Fock Kohn–Sham potential. Chem Phys 2011. [DOI: 10.1016/j.chemphys.2011.05.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
9
|
Reichardt C, Vogt RA, Crespo-Hernández CE. On the origin of ultrafast nonradiative transitions in nitro-polycyclic aromatic hydrocarbons: Excited-state dynamics in 1-nitronaphthalene. J Chem Phys 2009; 131:224518. [DOI: 10.1063/1.3272536] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
10
|
Hu B, Zhang J. Theoretical investigation on the white-light emission from a single-polymer system with simultaneous blue and orange emission. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.10.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Auer AA, Gauss J. Orbital instabilities and spin-symmetry breaking in coupled-cluster calculations of indirect nuclear spin–spin coupling constants. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2008.10.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
12
|
Elliott P, Furche F, Burke K. Excited States from Time-Dependent Density Functional Theory. REVIEWS IN COMPUTATIONAL CHEMISTRY 2009. [DOI: 10.1002/9780470399545.ch3] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
13
|
Wong BM, Piacenza M, Sala FD. Absorption and fluorescence properties of oligothiophene biomarkers from long-range-corrected time-dependent density functional theory. Phys Chem Chem Phys 2009; 11:4498-508. [DOI: 10.1039/b901743g] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Ortiz-Sánchez JM, Gelabert R, Moreno M, Lluch JM. Electronic-structure and quantum dynamical study of the photochromism of the aromatic Schiff base salicylideneaniline. J Chem Phys 2008; 129:214308. [DOI: 10.1063/1.3032215] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
15
|
Ortiz-Sánchez JM, Gelabert R, Moreno M, Lluch JM. Study of the Photochemical Properties and Conical Intersections of [2,2′-Bipyridyl]-3-amine-3′-ol. Chemphyschem 2008; 9:2068-76. [DOI: 10.1002/cphc.200800322] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
16
|
Hellweg A, Grün SA, Hättig C. Benchmarking the performance of spin-component scaled CC2 in ground and electronically excited states. Phys Chem Chem Phys 2008; 10:4119-27. [PMID: 18612515 DOI: 10.1039/b803727b] [Citation(s) in RCA: 241] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A generalization of the spin-component scaling and scaled opposite-spin modifications of second-order Møller-Plesset perturbation theory to the approximate coupled-cluster singles-and-doubles model CC2 (termed SCS-CC2 and SOS-CC2) is discussed and a preliminary implementation of ground and excited state energies and analytic gradients is reported. The computational results for bond distances, harmonic frequencies, adiabatic and 0-0 excitation energies are compared with experimental results to benchmark their performance. It is found that both variants of the spin-scaling increase the robustness of CC2 against strong correlation effects and lead for this method even to somewhat larger improvements than those observed for second-order Møller-Plesset perturbation theory. The spin-component scaling also enhances systematically the accuracy of CC2 for 0-0 excitation energies for pi --> pi* and n --> pi* transitions, if geometries are determined at the same level.
Collapse
Affiliation(s)
- Arnim Hellweg
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, D-44780, Bochum, Germany
| | | | | |
Collapse
|
17
|
Peach MJG, Benfield P, Helgaker T, Tozer DJ. Excitation energies in density functional theory: An evaluation and a diagnostic test. J Chem Phys 2008; 128:044118. [DOI: 10.1063/1.2831900] [Citation(s) in RCA: 1094] [Impact Index Per Article: 68.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
|
18
|
Zugazagoitia JS, Almora-Díaz CX, Peon J. Ultrafast Intersystem Crossing in 1-Nitronaphthalene. An Experimental and Computational Study. J Phys Chem A 2008; 112:358-65. [DOI: 10.1021/jp074809a] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Jimena S. Zugazagoitia
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, 04510, México, D.F., México
| | - César Xavier Almora-Díaz
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, 04510, México, D.F., México
| | - Jorge Peon
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, 04510, México, D.F., México
| |
Collapse
|
19
|
Piacenza M, Zambianchi M, Barbarella G, Gigli G, Della Sala F. Theoretical study on oligothiophene N-succinimidyl esters: size and push–pull effects. Phys Chem Chem Phys 2008; 10:5363-73. [DOI: 10.1039/b803963a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Lehtonen O, Sundholm D, Vänskä T. Computational studies of semiconductor quantum dots. Phys Chem Chem Phys 2008; 10:4535-50. [DOI: 10.1039/b804212h] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Hu B, Gahungu G, Zhang J. Optical Properties of the Phosphorescent Trinuclear Copper(I) Complexes of Pyrazolates: Insights from Theory. J Phys Chem A 2007; 111:4965-73. [PMID: 17511429 DOI: 10.1021/jp0689215] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Theoretical investigations have been performed to explore the optical properties of {[3,5-(CF3)(2)Pz]Cu}3 in monomeric and dimeric forms using TD-DFT approaches. The emission of all complexes originates from the lowest triplet excited-states (T1), and the corresponding emissive states are assigned as the mixture of the metal-centered charge transfer and ligand-to-metal charge transfer. The features of the emission spectrum are clarified in detail. The bulk emission spectrum of complex is mainly determined by the stacked dimers rather than the individual monomers. The predicted maximum emission wavelength (lambda(em)) are in good agreement with experimental values, indicating that the phosphorescence bands can be assigned to two different conformations for the neighboring stacked dimers sharing the same monomer in the complex. Energy transfer from T1 of one stacked dimer to the neighboring one is responsible for the disappearance of the shoulder, leaving only the main peak upon heating. With the aim to reveal the conformational dependence for the triplet excited-state emission spectrum, the optical properties of various stacked dimers with different conformations are investigated by varying the relative arrangements through changing inter-monomer distance or rotational angles for the dimer which is responsible for the main peak emission. Calculation results suggest that the shortest intermolecular Cu...Cu distance plays an important role in the emission spectra of the vertical- and tilting-movement dimers, which is ascribed to the variation of the energy gap for the frontier molecular orbitals involved in the main emitting transition. The blue shift of lambda(em) in parallel-movement and rotational dimers can be traced back to the variation of the mutual spatial orientation. Therefore, the modulation of the extent of movement or rotational angles for stacked dimers by external perturbations creates new possibilities for the design of molecular light-emitting devices.
Collapse
Affiliation(s)
- Bo Hu
- Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | | | | |
Collapse
|
22
|
Zambianchi M, Barbieri A, Ventola A, Favaretto L, Bettini C, Galeotti M, Barbarella G. Testing Oligothiophene Fluorophores under Physiological Conditions. Preparation and Optical Characterization of the Conjugates of Bovine Serum Albumin with Oligothiophene N-Hydroxysuccinimidyl Esters. Bioconjug Chem 2007; 18:1004-9. [PMID: 17378602 DOI: 10.1021/bc060332e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bovine serum albumin (BSA) was reacted with linear and newly synthesized branched oligothiophene N-hydroxysuccinimidyl ester fluorophores (TSEs) in moderately basic carbonate buffer solution. Optically stable BSA-TSE conjugates were obtained with a degree of labeling depending on experimental conditions. Conjugates with high fluorophore to BSA ratios (F/BSA = 8) displayed fluorescence quantum yields in the range of 10-30% in water at pH = 7.2, comparable to the quantum yield (25%) of the BSA-FITC conjugate prepared under the same conditions and with the same degree of labeling.
Collapse
Affiliation(s)
- Massimo Zambianchi
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Bologna, Italy
| | | | | | | | | | | | | |
Collapse
|
23
|
Optical Properties of N-Succinimidyl Bithiophene and the Effects of the Binding to Biomolecules: Comparison between Coupled-Cluster and Time-Dependent Density Functional Theory Calculations and Experiments. J Phys Chem B 2006. [DOI: 10.1021/jp067876y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|