1
|
Petrusevich EF, Reis H, Ośmiałowski B, Jacquemin D, Luis JM, Zaleśny R. One- and two-photon absorption spectra of organoboron complexes: vibronic and environmental effects. Phys Chem Chem Phys 2024; 26:13239-13250. [PMID: 38634828 DOI: 10.1039/d4cp01089b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
We synthesized a series of four parent aza-β-ketoiminate organoboron complexes and performed spectroscopic studies using both experimental and computational techniques. We studied how benzannulation influences the vibronic structure of the UV/Vis absorption bands with a focus on the bright lowest-energy π → π* electronic excitation. Theoretical simulations, accounting for inhomogeneous broadening effects using different embedding schemes, allowed gaining in-depth insights into the observed differences in band shapes induced by structural modifications. We observed huge variations in the distributions of vibronic transitions depending on the position of benzannulation. By and large, the harmonic approximation combined with the adiabatic hessian model delivers qualitatively correct band shapes for the one-photon absorption spectra, except in one case. We also assessed the importance of non-Condon effects (accounted for by the linear term in Herzberg-Teller expansion of the dipole moment) for S0 → S1 band shapes. It turned out that non-Condon contributions have no effect on the band shape in one-photon absorption spectra. In contrast, these effects significantly change the Franck-Condon band shapes of the two-photon absorption spectra. For one of the studied organoboron complexes we also performed a preliminary exploration of mechanical anharmonicity, resulting in an increase of the intensity of the 0-0 transition, which improves the agreement with the experimental data compared to the harmonic model.
Collapse
Affiliation(s)
- Elizaveta F Petrusevich
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, Campus de Montilivi, 17003, Girona, Catalonia, Spain.
| | - Heribert Reis
- Institute of Chemical Biology, National Hellenic Research Foundation (NHRF), Vassileos Constantinou Ave 48th, 116 35 Athens, Greece
| | - Borys Ośmiałowski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100 Toruń, Poland
| | - Denis Jacquemin
- Nantes Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
- Institut Universitaire de France (IUF), F-75005 Paris, France
| | - Josep M Luis
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, Campus de Montilivi, 17003, Girona, Catalonia, Spain.
| | - Robert Zaleśny
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| |
Collapse
|
2
|
Petrusevich EF, Głodek M, Antoniak MA, Muzioł T, Plażuk D, Siomra A, Nyk M, Ośmiałowski B, Zaleśny R. Difluoroborate-based bichromophores: Symmetry relaxation and two-photon absorption. Spectrochim Acta A Mol Biomol Spectrosc 2023; 295:122600. [PMID: 36930837 DOI: 10.1016/j.saa.2023.122600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/15/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Given potential applications of multiphoton absorbers, in the present work we have studied the symmetry-relaxation effects in one- and two-photon absorption spectra in two bichromophore systems based on difluoroborate core linked by biphenylene or bianthracene moieties. We have employed a palette of experimental methods (synthesis, one- and two-photon spectroscopy, X-ray crystallography) and state-of-the-art computational methods to shed light on how symmetry relaxation, a result of twisting of building blocks, affects one- and two-photon absorption of the two studied fluorescent dyes. Electronic-structure calculations revealed that the planarity of central biphenyl moiety, as well as deviations from planarity up to 30-40 deg., ensure maximum values of two-photon transition strengths. Perpendicular arrangement of phenylene units in biphenylene moiety leads to 20% drop in the two-photon transition strengths. More detailed studies demonstrated that equilibrium structures of both compounds in chloroform solution show very different values of two-photon absorption cross sections at absorption band maxima, i.e. 224 GM for and 134 GM for biphenyle and bianthracene linkers, respectively. The latter value is in good agreement with experimental value obtained using Z-scan method. The difference in two-photon absorption cross section between both compounds can be rationalized based on equilibrium geometry differences, i.e. interplanar angle is 35 deg and 91 deg in the case of biphenylene and bianthracene moiety, respectively. It is thus not beneficial to introduce conformationally locked central linker based on bianthracene moiety.
Collapse
Affiliation(s)
- Elizaveta F Petrusevich
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspiańskiego 27, Wrocław, PL-50-370, Poland
| | - Marta Głodek
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina Street 7, Toruń, PL-87-100, Poland
| | - Magda A Antoniak
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspiańskiego 27, Wrocław, PL-50-370, Poland
| | - Tadeusz Muzioł
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina Street 7, Toruń, PL-87-100, Poland
| | - Damian Plażuk
- Laboratory of Molecular Spectroscopy, Department of Organic Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, Łódź, PL-90-403, Poland
| | - Agnieszka Siomra
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspiańskiego 27, Wrocław, PL-50-370, Poland
| | - Marcin Nyk
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspiańskiego 27, Wrocław, PL-50-370, Poland
| | - Borys Ośmiałowski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina Street 7, Toruń, PL-87-100, Poland.
| | - Robert Zaleśny
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspiańskiego 27, Wrocław, PL-50-370, Poland.
| |
Collapse
|
3
|
Petrusevich EF, Bousquet MHE, Ośmiałowski B, Jacquemin D, Luis JM, Zaleśny R. Cost-Effective Simulations of Vibrationally-Resolved Absorption Spectra of Fluorophores with Machine-Learning-Based Inhomogeneous Broadening. J Chem Theory Comput 2023; 19:2304-2315. [PMID: 37096370 PMCID: PMC10134414 DOI: 10.1021/acs.jctc.2c01285] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
The results of electronic and vibrational structure simulations are an invaluable support for interpreting experimental absorption/emission spectra, which stimulates the development of reliable and cost-effective computational protocols. In this work, we contribute to these efforts and propose an efficient first-principle protocol for simulating vibrationally-resolved absorption spectra, including nonempirical estimations of the inhomogeneous broadening. To this end, we analyze three key aspects: (i) a metric-based selection of density functional approximation (DFA) so to benefit from the computational efficiency of time-dependent density function theory (TD-DFT) while safeguarding the accuracy of the vibrationally-resolved spectra, (ii) an assessment of two vibrational structure schemes (vertical gradient and adiabatic Hessian) to compute the Franck-Condon factors, and (iii) the use of machine learning to speed up nonempirical estimations of the inhomogeneous broadening. In more detail, we predict the absorption band shapes for a set of 20 medium-sized fluorescent dyes, focusing on the bright ππ★ S0 → S1 transition and using experimental results as references. We demonstrate that, for the studied 20-dye set which includes structures with large structural variability, the preselection of DFAs based on an easily accessible metric ensures accurate band shapes with respect to the reference approach and that range-separated functionals show the best performance when combined with the vertical gradient model. As far as band widths are concerned, we propose a new machine-learning-based approach for determining the inhomogeneous broadening induced by the solvent microenvironment. This approach is shown to be very robust offering inhomogeneous broadenings with errors as small as 2 cm-1 with respect to genuine electronic-structure calculations, with a total CPU time reduced by 98%.
Collapse
Affiliation(s)
- Elizaveta F. Petrusevich
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, Campus de Montilivi, 17003 Girona, Catalonia, Spain
| | | | - Borys Ośmiałowski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina Street 7, PL-87-100 Toruń, Poland
| | - Denis Jacquemin
- Nantes Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
- Institut Universitaire de France (IUF), F-75005 Paris, France
| | - Josep M. Luis
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, Campus de Montilivi, 17003 Girona, Catalonia, Spain
| | - Robert Zaleśny
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| |
Collapse
|
4
|
Chołuj M, Behera R, Petrusevich EF, Bartkowiak W, Alam MM, Zaleśny R. Much of a Muchness: On the Origins of Two- and Three-Photon Absorption Activity of Dipolar Y-Shaped Chromophores. J Phys Chem A 2022; 126:752-759. [PMID: 35084177 PMCID: PMC8842251 DOI: 10.1021/acs.jpca.1c10098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The molecular origin
of two- (2PA) and three-photon absorption
(3PA) activity in three experimentally studied chromophores, prototypical
dipolar systems, is investigated. To that end, a generalized few-state
model (GFSM) formula is derived for the 3PA transition strength for
nonhermitian theories and employed at the coupled-cluster level of
theory. Using various computational techniques such as molecular dynamics,
linear and quadratic response theories, and GFSM, an in-depth analysis
of various optical channels involved in 2PA and 3PA processes is presented.
It is found that the four-state model involving the second and third
excited singlet states as intermediates is the smallest model among
all considered few-state approximations that produces 2PA and 3PA
transition strengths (for S0 → S1 transition)
close to the reference results. By analyzing various optical channels
appearing in these models and involved in studied multiphoton processes,
we found that the 2PA and 3PA activities in all the three chromophores
are dominated and hence controlled by the dipole moment of the final
excited state. The similar origins of the 2PA and the 3PA in these
prototypical dipolar chromophores suggest transferability of structure–property
relations from the 2PA to the 3PA domain.
Collapse
Affiliation(s)
- Marta Chołuj
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| | - Rojalini Behera
- Department of Chemistry, Indian Institute of Technology Bhilai, Sejbahar, Raipur, Chhattisgarh 492015, India
| | - Elizaveta F Petrusevich
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| | - Wojciech Bartkowiak
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| | - Md Mehboob Alam
- Department of Chemistry, Indian Institute of Technology Bhilai, Sejbahar, Raipur, Chhattisgarh 492015, India
| | - Robert Zaleśny
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| |
Collapse
|
5
|
Moshkina TN, Nosova EV, Lipunova GN, Valova MS, Petrusevich EF, Zaleśny R, Ośmiałowski B, Charushin VN. Substituted 2-(2-hydroxyphenyl)-3H-quinazolin-4-ones and their difluoroboron complexes: Synthesis and photophysical properties. Spectrochim Acta A Mol Biomol Spectrosc 2021; 252:119497. [PMID: 33556794 DOI: 10.1016/j.saa.2021.119497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
2-(2-Hydroxyphenyl)-3H-quinazolin-4-ones with diverse substituents at phenol ring and their six-membered difluoroboron complexes have been synthesized via few-stage approach. The photophysical properties of target compounds have been investigated in two solvents as well as in the solid state. The nature of substituents and substitution point in the phenol moiety of ligands and resulting BF2-complexes on the photophysical properties of dyes have been explored. The complex bearing two t-Bu groups proved to be the most emissive in solid state, whereas its 5-methoxy and 4-diethylamino counterparts possess strong emission in toluene solution. The dyes exhibited large Stokes shifts which was attributed to excited state intramolecular proton transfer (ESIPT). Additionally, fluorescence of quinazolinones in the mixture of THF/water was studied. All ligands demonstrated emission enhancement with increase of water fraction which was due to aggregation induced emission.
Collapse
Affiliation(s)
- Tatyana N Moshkina
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19 Mira st., Ekaterinburg 620002, Russia
| | - Emiliya V Nosova
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19 Mira st., Ekaterinburg 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya st. /20 Akademicheskaya st., Ekaterinburg 620137, Russia.
| | - Galina N Lipunova
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya st. /20 Akademicheskaya st., Ekaterinburg 620137, Russia
| | - Marina S Valova
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya st. /20 Akademicheskaya st., Ekaterinburg 620137, Russia
| | - Elizaveta F Petrusevich
- Department of Physical and Quantum Chemistry, Wroclaw University of Science and Technology, 27 Wyb. Wyspiańskiego, Wrocław PL-50370, Poland
| | - Robert Zaleśny
- Department of Physical and Quantum Chemistry, Wroclaw University of Science and Technology, 27 Wyb. Wyspiańskiego, Wrocław PL-50370, Poland
| | - Borys Ośmiałowski
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Street, Torun 87-100, Poland
| | - Valery N Charushin
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19 Mira st., Ekaterinburg 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya st. /20 Akademicheskaya st., Ekaterinburg 620137, Russia
| |
Collapse
|
6
|
Abstract
![]()
We
present a theoretical study of a two-photon absorption (2PA)
process in dipolar and quadrupolar systems containing two BF2 units. For this purpose, we considered 13 systems studied by Ponce-Vargas
et al. [2017, 121, 10850−1085829136383] and performed linear and quadratic response
theory calculations based on the RI-CC2 method to obtain the 2PA parameters.
Furthermore, using the recently developed generalized few-state model,
we provided an in-depth view of the changes in 2PA properties in the
molecules considered. Our results clearly indicate that suitable electron-donating
group substitution to the core BF2 units results in a large
red-shift of the two-photon absorption wavelength, thereby entering
into the desired biological window. Furthermore, the corresponding
2PA strength also increases significantly (up to 30-fold). This makes
the substituted systems a potential candidate for biological imaging.
Collapse
Affiliation(s)
- Elizaveta F Petrusevich
- Theoretical Photochemistry and Photophysics Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, Wrocław PL-50370, Poland
| | - Borys Ośmiałowski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, Toruń PL-87100, Poland
| | - Robert Zaleśny
- Theoretical Photochemistry and Photophysics Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, Wrocław PL-50370, Poland
| | - Md Mehboob Alam
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, Chhattisgarh 492015, India
| |
Collapse
|
7
|
Dubinina TV, Maklakov SS, Petrusevich EF, Borisova NE, Trashin SA, De Wael K, Tomilova LG. Photoactive layers for photovoltaics based on near-infrared absorbing aryl-substituted naphthalocyanine complexes: preparation and investigation of properties. NEW J CHEM 2021. [DOI: 10.1039/d1nj02793j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoactive layers based on substituted naphthalocyanines and conductive polymer MEH-PPV were prepared using the spin-coating technique and their conductivity was tested in dark and under illumination.
Collapse
Affiliation(s)
- Tatiana V. Dubinina
- Chemistry Department
- Lomonosov Moscow State University
- 119991 Moscow
- Russian Federation
- Institute of Physiologically Active Compounds
| | - Sergey S. Maklakov
- Institute for Theoretical and Applied Electromagnetics
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Elizaveta F. Petrusevich
- Theoretical Photochemistry and Photophysics Group
- Faculty of Chemistry
- Wrocław University of Science and Technology
- Wrocław PL–50370
- Poland
| | - Nataliya E. Borisova
- Chemistry Department
- Lomonosov Moscow State University
- 119991 Moscow
- Russian Federation
- A.N. Nesmeyanov Institute of Organoelement Compounds
| | - Stanislav A. Trashin
- AXES research group
- Groenenborgerlaan 171
- University of Antwerp
- 2020 Antwerp
- Belgium
| | - Karolien De Wael
- AXES research group
- Groenenborgerlaan 171
- University of Antwerp
- 2020 Antwerp
- Belgium
| | - Larisa G. Tomilova
- Chemistry Department
- Lomonosov Moscow State University
- 119991 Moscow
- Russian Federation
- Institute of Physiologically Active Compounds
| |
Collapse
|
8
|
Ośmiałowski B, Petrusevich EF, Antoniak MA, Grela I, Bin Jassar MA, Nyk M, Luis JM, Jędrzejewska B, Zaleśny R, Jacquemin D. Controlling Two-Photon Action Cross Section by Changing a Single Heteroatom Position in Fluorescent Dyes. J Phys Chem Lett 2020; 11:5920-5925. [PMID: 32628024 PMCID: PMC7460565 DOI: 10.1021/acs.jpclett.0c01438] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The optimization of nonlinear optical properties for "real-life" applications remains a key challenge for both experimental and theoretical approaches. In particular, for two-photon processes, maximizing the two-photon action cross section (TPACS), the figure of merit for two-photon bioimaging spectroscopy, requires simultaneously controlling all its components. In the present Letter, a series of difluoroborates presenting various heterocyclic rings as an electron acceptor have been synthesized and their absorption, fluorescence, photoisomerization, and two-photon absorption features have been analyzed using both experimental and theoretical approaches. Our results demonstrate that the TPACS values can be fine-tuned by changing the position of a single heteroatom, which alters the fluorescence quantum yields without changing the intrinsic two-photon absorption cross section. This approach offers a new strategy for optimizing TPACS.
Collapse
Affiliation(s)
- Borys Ośmiałowski
- Faculty
of Chemistry, Nicolaus Copernicus University, Gagarina 7, PL-87100 Toruń, Poland
- E-mail:
| | - Elizaveta F. Petrusevich
- Department
of Physical and Quantum Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
| | - Magda A. Antoniak
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
| | - Izabela Grela
- Faculty
of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, 85-326, Bydgoszcz, Poland
| | - Mohammed A. Bin Jassar
- Université
d’Aix-Marseille, Département
de Chimie, CNE Master, Campus de St Jérôme, 13013 Marseille, France
| | - Marcin Nyk
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
| | - Josep M. Luis
- Institute
of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, Campus de Montilivi, 17071 Girona, Catalonia Spain
| | - Beata Jędrzejewska
- Faculty
of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, 85-326, Bydgoszcz, Poland
| | - Robert Zaleśny
- Department
of Physical and Quantum Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
- E-mail:
| | - Denis Jacquemin
- Université
de Nantes, CNRS, CEISAM UMR
6230, F-44000 Nantes, France
- E-mail:
| |
Collapse
|
9
|
Gorbachev DA, Petrusevich EF, Kabylda AM, Maksimov EG, Lukyanov KA, Bogdanov AM, Baranov MS, Bochenkova AV, Mishin AS. A General Mechanism of Green-to-Red Photoconversions of GFP. Front Mol Biosci 2020; 7:176. [PMID: 32850965 PMCID: PMC7405548 DOI: 10.3389/fmolb.2020.00176] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 07/07/2020] [Indexed: 12/20/2022] Open
Abstract
Here we dissect the phenomena of oxidative and reductive green-to-red photoconversion of the Green Fluorescent Protein. We characterize distinct orange- and red-emitting forms (λabs/λem = 490/565 nm; λabs/λem = 535/600 nm) arising during the Enhanced Green Fluorescent Protein (EGFP) photoconversion under low-oxygen conditions in the presence of reductants. These forms spectroscopically differ from that observed previously in oxidative redding (λabs/λem = 575/607 nm). We also report on a new green-emitting state (λabs/λem = 405/525 nm), which is formed upon photoconversion under the low-oxygen conditions. Based on the spectral properties of these forms, their light-independent time evolution, and the high-level computational studies, we provide a structural basis for various photoproducts. Under the low-oxygen conditions, the neutral quinoid-like structure formed via a two-electron oxidation process is found to be a key intermediate and a most likely candidate for the novel green-emitting state of the chromophore. The observed large Stokes shift is traced to the formation of the zwitterionic form of the chromophore in the excited state. Subsequently, this form undergoes two types of cyclization reactions, resulting in the formation of either the orange-emitting state (λabs/λem = 490/565 nm) or the red-emitting form (λabs/λem = 535/600 nm). The T65G mutant lacks one of the proposed cyclization pathways and, indeed, the photoconverted T65G EGFP exhibits a single orange-emitting state. In oxidative redding, the red-emitting state resembles the structure of the chromophore from asFP595 (λabs/λem = 572/595 nm), which is directly formed upon two-electron oxidation and deprotonation bypassing the formation of the quinoid-like structure. Our results disclose a general “oxidative” mechanism of various green-to-red photoconversions of EGFP, providing a link between oxidative redding and the photoconversion under low-oxygen conditions.
Collapse
Affiliation(s)
- Dmitry A Gorbachev
- Center of Life Sciences, Skolkovo Institute of Science and Technology, Moscow, Russia
| | | | - Adil M Kabylda
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Eugene G Maksimov
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Konstantin A Lukyanov
- Center of Life Sciences, Skolkovo Institute of Science and Technology, Moscow, Russia
| | - Alexey M Bogdanov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Mikhail S Baranov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Institute of Translational Medicine, Pirogov Russian National Research Medical University, Moscow, Russia
| | | | - Alexander S Mishin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| |
Collapse
|
10
|
Dubinina TV, Kosov AD, Petrusevich EF, Borisova NE, Trigub AL, Mamin GV, Gilmutdinov IF, Masitov AA, Tokarev SV, Pushkarev VE, Tomilova LG. Sandwich double-decker Er(iii) and Yb(iii) complexes containing naphthalocyanine moiety: synthesis and investigation of the effect of a paramagnetic metal center. Dalton Trans 2019; 48:13413-13422. [PMID: 31433418 DOI: 10.1039/c9dt03226f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel heteroleptic Er(iii) and Yb(iii) naphthalocyaninato-phthalocyaninates containing an octa-phenyl or octa-phenoxysubstituted naphthalocyanine deck were synthesised and identified by 1H NMR, EPR and high resolution MALDI-TOF/TOF mass spectrometry. Direct synthesis of novel homoleptic Yb(iii) bis (octa-phenylnaphthalocyaninate) was carried out. Downfield lanthanide induced shifts of the aromatic protons in target compounds were observed compared with the corresponding diamagnetic Lu(iii) complexes. In the near-IR absorption spectra, an increase in ionic radius from Lu(iii) to Er(iii) resulted in a bathochromic shift of the intervalence band up to 1473 nm. This work presents the first experimental EPR study of Yb(iii) bis naphthalocyaninate, where a set of magnetic parameters and properties (including spin, magnitude and sign of magnetic anisotropy parameter D, increased splitting in a crystal field, ferromagnetic f-π interaction etc.) were determined and interpreted by both EPR and SQUID techniques and supported by theoretical considerations.
Collapse
Affiliation(s)
- Tatiana V Dubinina
- Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. and Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432 Chernogolovka, Moscow Region, Russian Federation
| | - Anton D Kosov
- Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation.
| | - Elizaveta F Petrusevich
- Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation.
| | - Nataliya E Borisova
- Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. and N. A. Nesmeyanov Institute of Organoelement Compounds, 28 Vavilov Str., 119334 Moscow, Russian Federation
| | - Alexander L Trigub
- National Research Center "Kurchatov Institute", pl. Akad. Kurchatova, dom 1, 123098 Moscow, Russian Federation
| | - George V Mamin
- Kazan Federal University, Institute of Physics, 18 Kremlyovskaya Str., 420008 Kazan, Russian Federation
| | - Ildar F Gilmutdinov
- Kazan Federal University, Institute of Physics, 18 Kremlyovskaya Str., 420008 Kazan, Russian Federation
| | - Artem A Masitov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 Academician Semenov avenue, 142432 Chernogolovka, Moscow Region, Russian Federation
| | - Sergey V Tokarev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 Academician Semenov avenue, 142432 Chernogolovka, Moscow Region, Russian Federation
| | - Victor E Pushkarev
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432 Chernogolovka, Moscow Region, Russian Federation
| | - Larisa G Tomilova
- Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. and Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432 Chernogolovka, Moscow Region, Russian Federation
| |
Collapse
|
11
|
Maklakov SS, Dubinina TV, Osipova MM, Petrusevich EF, Mishin AD, Tomilova LG. A novel hybrid blend based on phenoxy-substituted boron subphthalocyanine for organic photodetectors. J PORPHYR PHTHALOCYA 2016. [DOI: 10.1142/s1088424616500759] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Phenoxy-substituted boron subphthalocyanine, blended with a conductive polymer MEH-PPV, is presented as a photoresistive organic material. Using an easily accessible drop casting technique, the blend produces a thin-layer organic photoresistor with a photoresistive ratio of ~2–12. Variations in the blend composition and morphology are shown to change the transport properties of the material. The photoelectrochemical characteristics of the photoresistor are discussed in terms of impedance spectroscopy and the morphology of the material is analyzed using confocal fluorescent microscopy. The device developed is a daylight detector.
Collapse
Affiliation(s)
- Sergey S. Maklakov
- Institute for Theoretical and Applied Electromagnetics of the Russian Academy of Sciences (ITAE RAS), Izhorskaya st., 13, Moscow, 125412, Russia
| | - Tatiana V. Dubinina
- M.V. Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory 1, 119991, Moscow, Russia
- Institute of Physiologically Active Compounds of the Russian Academy of Sciences (IPAC RAS), Severny proezd 1, 142432, Chernogolovka, Moscow Region, Russia
| | - Marina M. Osipova
- M.V. Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory 1, 119991, Moscow, Russia
| | - Elizaveta F. Petrusevich
- M.V. Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory 1, 119991, Moscow, Russia
| | - Alexey D. Mishin
- Institute for Theoretical and Applied Electromagnetics of the Russian Academy of Sciences (ITAE RAS), Izhorskaya st., 13, Moscow, 125412, Russia
| | - Larisa G. Tomilova
- M.V. Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory 1, 119991, Moscow, Russia
- Institute of Physiologically Active Compounds of the Russian Academy of Sciences (IPAC RAS), Severny proezd 1, 142432, Chernogolovka, Moscow Region, Russia
| |
Collapse
|
12
|
Dubinina TV, Kosov AD, Petrusevich EF, Maklakov SS, Borisova NE, Tomilova LG, Zefirov NS. Heteroleptic naphthalo-phthalocyaninates of lutetium: synthesis and spectral and conductivity properties. Dalton Trans 2015; 44:7973-81. [PMID: 25826576 DOI: 10.1039/c5dt00635j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel heteroleptic naphthalo-phthalocyaninates of lutetium possessing a symmetrical substituted naphthalocyanine deck were synthesized on the basis of two preformed synthetic blocks: naphthalocyanine ligand and lutetium phthalocyaninates. The compounds obtained were characterized by (1)H NMR and high-resolution MALDI-TOF/TOF mass spectrometry. The correlation between the nature of the substituents and the spectral properties of the target complexes was determined by the introduction of electron-donating (aryl-, aryloxy-) or electron-withdrawing (chloro-) substituents into the phthalocyanine deck. In addition, the nature of peripheral substituents was shown not to affect drastically the phthalocyanine conductivity and activation energy. Conductivity properties depend on thin film morphology which, in turn, relies on intermolecular π-π interactions.
Collapse
Affiliation(s)
- Tatiana V Dubinina
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation.
| | | | | | | | | | | | | |
Collapse
|