1
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Deorukhkar N, Egger C, Rosspeintner A, Piguet C. Unravelling Kinetics of Intramolecular Nd III → Fe II Energy Transfer in Spin Crossover Single Molecules: Dotting the i's and Crossing the t's. J Am Chem Soc 2024. [PMID: 38953864 DOI: 10.1021/jacs.4c05546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Compared with the ripple of visible EuIII-based emission intensity induced by appended [FeIIN6] spin crossover (SCO) units, as detected in the triple-stranded [EuFe(L1)3]5+ helicate, the lanthanide-based luminescent detection of FeII spin-state equilibria could be improved significantly if the luminophore emission is shifted toward the near-infrared (NIR) domain. Replacing EuIII with NdIII in [NdFe(L1)3]5+ (i) maintains the favorable SCO properties in acetonitrile [critical temperature T1/2 = 322(2) K], (ii) saturates nonradiative vibrational relaxation processes in the 233-333 K range, and (iii) boosts the crucial intramolecular NdIII → FeII energy transfer rate processes, which are sensitive to the spin state of the FeII metallic center. Consequently, the steady-state NIR Nd(4F3/2 → 4IJ) emission of the luminophore is amplified and linearly correlated with the low-spin-[FeIIN6] and high-spin-[FeIIN6] mole fractions controlled by the SCO equilibrium. This paves the way for a straightforward and direct NIR luminescent reading/sensing of the FeII spin state in single molecules.
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Affiliation(s)
- Neel Deorukhkar
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Charlotte Egger
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva, 30 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
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2
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Deorukhkar N, Egger C, Guénée L, Besnard C, Piguet C. Detecting Fe(II) Spin-Crossover by Modulation of Appended Eu(III) Luminescence in a Single Molecule. J Am Chem Soc 2024; 146:308-318. [PMID: 37877700 DOI: 10.1021/jacs.3c09017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Multifunctionality in spin-crossover (SCO) devices is limited to macroscopic or nanoscopic materials because of the need for long-range effects for inducing favorable cooperativity, efficient energy migration processes, and detectable magnetization transfer. The difficult reproducibility, control, and rational design of doped materials offer some place to SCO processes, modulating the optical properties of neighboring luminescent probes in single molecules. We report here on the combination of a [FeN6] chromophore, the SCO temperature and absorption spectra of which have been tuned to induce unprecedented room-temperature modulation of Eu(III)-based line-like luminescence in the molecular triple-helical [EuFe(L2)3]5+ complex in solution.
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Affiliation(s)
- Neel Deorukhkar
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Charlotte Egger
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Laure Guénée
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet. CH-1211 Geneva 4, Switzerland
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet. CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
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3
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Diaz-Uribe C, Rangel D, Vallejo W, Valle R, Hidago-Rosa Y, Zarate X, Schott E. Photophysical characterization of tetrahydroxyphenyl porphyrin Zn(II) and V(IV) complexes: experimental and DFT study. Biometals 2023; 36:1257-1272. [PMID: 37344742 DOI: 10.1007/s10534-023-00514-9] [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: 01/26/2023] [Accepted: 05/26/2023] [Indexed: 06/23/2023]
Abstract
Photodynamic therapy (PDT) is a promising technique for the treatment of various diseases. In this sense, the singlet oxygen quantum yield (Φ∆) is a physical-chemical property that allows to stablish the applicability of a potential photosensitizers (PS) as a drug for PDT. In the herein report, the Φ∆ of three photosensitizers was determined: metal-free tetrahydroxyphenyl porphyrin (THPP), THPP-Zn and the THPP-V metal complexes. Their biological application was also evaluated. Therefore, the in vitro study was carried out to assess their biological activity against Escherichia coli. The metal-porphyrin complexes exhibited highest activities against the bacterial strain Escherichia coli. at the highest concentration (175 μg/mL) and show better activity than the free base ligand (salts and blank solution). Results indicated a relation between Φ∆ and the inhibitory activity against Escherichia coli, thus, whereas higher is the Φ∆, higher is the inhibitory activity. The values of the Φ∆ and the inhibitory activity follows the tendency THPP-Zn > THPP > THPP-V. Furthermore, quantum chemical calculations allowed to gain deep insight into the electronic and optical properties of THPP-Zn macrocycle, which let to verify the most probable energy transfer pathway involved in the singlet oxygen generation.
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Affiliation(s)
- Carlos Diaz-Uribe
- Grupo de Investigación en Fotoquímica y Fotobiología. Programa de Química. Facultad de Ciencias Básicas, Universidad del Atlántico, 081007, Puerto Colombia, Colombia.
| | - Daily Rangel
- Grupo de Investigación en Fotoquímica y Fotobiología. Programa de Química. Facultad de Ciencias Básicas, Universidad del Atlántico, 081007, Puerto Colombia, Colombia
| | - William Vallejo
- Grupo de Investigación en Fotoquímica y Fotobiología. Programa de Química. Facultad de Ciencias Básicas, Universidad del Atlántico, 081007, Puerto Colombia, Colombia
| | - Roger Valle
- Programa de Biología, Facultad de Ciencias Básicas, Universidad del Atlántico, 081007, Puerto Colombia, Colombia
| | - Yoan Hidago-Rosa
- Departamento de Química Inorgánica, Facultad de Química y Farmacia, Centro de Energía UC, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia, Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, Santiago, Chile
- Facultad de Ingeniería, Universidad Finis Terrae, Av. Pedro de Valdivia, 1509, Santiago, Providencia, Chile
| | - Ximena Zarate
- Facultad de Ingeniería, Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Santiago, Chile.
| | - Eduardo Schott
- Departamento de Química Inorgánica, Facultad de Química y Farmacia, Centro de Energía UC, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia, Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, Santiago, Chile.
- Millennium Nucleus in Catalytic Processes Towards Sustainable Chemistry (CSC), Santiago, Chile.
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4
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Structures and luminescent properties of Sm(III) and Eu(III) coordination polymers with benzoate and phthalate. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Expanding the Knowledge of the Selective-Sensing Mechanism of Nitro Compounds by Luminescent Terbium Metal-Organic Frameworks through Multiconfigurational ab Initio Calculations. J Phys Chem A 2022; 126:7040-7050. [PMID: 36154179 DOI: 10.1021/acs.jpca.2c05468] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The current research shows that the excited-state dynamics of the antenna ligand, both in the interacting system sensor/analyte and in the sensor without analyte, is a safe tool for elucidating the detection principle of the luminescent lanthanide-based metal-organic framework sensors. In this report the detection principle of the luminescence quenching mechanism in two Tb-based MOFs sensors is elucidated. The first system is a luminescent Tb-MOF [Tb(BTTA)1.5(H2O)4.5]n (H2BTTA = 2,5-bis(1H-1,2,4-triazol-1-yl) terephthalic acid) selective to nitrobenzene (NB), labeled as Tb-1. The second system is {[Tb(DPYT)(BPDC)1/2(NO3)]·H2O}n (DPYT = 2,5-di(pyridin-4-yl) terephthalic acid, BPDC = biphenyl-4,4'-dicarboxylic acid), reported as a selective chemical sensor to nitromethane (NM) in situ, labeled as Tb-2. The luminescence quenching of the MOFs is promoted by intermolecular interactions with the analytes that induce destabilization of the T1 electronic state of the linker "antenna", altering thus the sensitization pathways of the Tb atoms. This study demonstrates the value of host-guest interaction simulations and the rate constants of the radiative and nonradiative processes in understanding and elucidating the sensing mechanism in Ln-MOF sensors.
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Carlotto S, Babetto L, Bortolus M, Carlotto A, Rancan M, Bottaro G, Armelao L, Carbonera D, Casarin M. Nature of the Ligand-Centered Triplet State in Gd 3+ β-Diketonate Complexes as Revealed by Time-Resolved EPR Spectroscopy and DFT Calculations. Inorg Chem 2021; 60:15141-15150. [PMID: 34612628 PMCID: PMC8763374 DOI: 10.1021/acs.inorgchem.1c01123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
![]()
A series of Gd3+ complexes
(Gd1–Gd3) with the general formula
GdL3(EtOH)2, where L is a β-diketone ligand
with polycyclic aromatic hydrocarbon
substituents of increasing size (1–3), was studied by combining time-resolved electron paramagnetic resonance
(TR-EPR) spectroscopy and DFT calculations to rationalize the anomalous
spectroscopic behavior of the bulkiest complex (Gd3)
through the series. Its faint phosphorescence band is observed only
at 80 K and it is strongly red-shifted (∼200 nm) from the intense
fluorescence band. Moreover, the TR-EPR spectral analysis found that
triplet levels of 3/Gd3 are effectively
populated and have smaller |D| values than those
of the other compounds. The combined use of zero-field splitting and
spin density delocalization calculations, together with spin population
analysis, allows us to explain both the large red shift and the low
intensity of the phosphorescence band observed for Gd3. The large red shift is determined by the higher delocalization
degree of the wavefunction, which implies a larger energy gap between
the excited S1 and T1 states. The low intensity
of the phosphorescence is due to the presence of C–H groups
which favor non-radiative decay. These groups are present in all complexes;
nevertheless, they have a relevant spin density only in Gd3. The spin population analysis on NaL models, in which Na+ is coordinated to a deprotonated ligand, mimicking the coordinative
environment of the complex, confirms the outcomes on the free ligands. A series of Gd3+ complexes
(Gd1−Gd3) were studied by combining
TR-EPR spectroscopy and DFT
calculations to rationalize the deviant spectroscopic behavior of
the bulkiest complex (Gd3). The combination of ZFS calculations
and the spin density delocalization analysis ascribed the larger red
shift to the higher degree of delocalization of the wavefunction and
the low intensity of the phosphorescence band to the presence of C−H
groups with relevant spin density that favor non-radiative decay.
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Affiliation(s)
- Silvia Carlotto
- Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy.,Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Luca Babetto
- Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Marco Bortolus
- Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Alice Carlotto
- Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Marzio Rancan
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Gregorio Bottaro
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Lidia Armelao
- Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy.,Department of Chemical Sciences and Technology of Materials (DSCTM), National Research Council (CNR), Piazzale A. Moro 7, 00185 Roma, Italy
| | - Donatella Carbonera
- Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Maurizio Casarin
- Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
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7
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Arrué L, Santoyo-Flores J, Pizarro N, Zarate X, Páez-Hernández D, Schott E. The role played by structural and energy parameters of β-Diketones derivatives as antenna ligands in Eu(III) complexes. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138600] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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8
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Li M, Ren G, Yang W, Yang Y, Yang W, Gao Y, Qiu P, Pan Q. Dual-emitting piezofluorochromic dye@MOF for white-light generation. Chem Commun (Camb) 2021; 57:1340-1343. [PMID: 33428698 DOI: 10.1039/d0cc06478e] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
An tetraphenylethylene-based MOF (HNU-49) has been synthesized, which exhibits interesting piezofluorochromic behavior. Additionally, rhodamine B (RhB) can be successful encapsulated in HNU-49, to emit the characteristic dual-emission of RhB and the framework. The combination of host-guest interaction and piezofluorochromism can precisely modulate the luminescence to achieve near white-light.
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Affiliation(s)
- Meiling Li
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Science, Hainan University, Haikou, 570228, China.
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9
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Chen L, Tan Y, Xu H, Wang K, Chen ZH, Zheng N, Li YQ, Lin LR. Enhanced E/ Z-photoisomerization and luminescence of stilbene derivative co-coordinated in di-β-diketonate lanthanide complexes. Dalton Trans 2020; 49:16745-16761. [PMID: 33146650 DOI: 10.1039/d0dt03383a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new tetradentate chelating ligand appending a stilbene derivative, E-N',N'-bis(pyridin-2-ylmethyl)-4-styrylbenzohydrazide (HL) was synthesized, together with two β-diketonates (4,4,4-trifluoro-1-phenylbutane-1,3-dionate, tfd), with or without the trifluoroacetate anion present as a ligand for coordination with lanthanide(iii) ions to form [Ln(tfd)2(HL)(CF3CO2)] (LnC49H36F9N4O7, Ln = La (1), Nd (2), Eu (3), Gd (4)) and [Yb(tfd)2(L)] (YbC47H35F6N4O5 (5), L = deprotonated HL). All five complexes were structurally characterized, and five crystals were obtained and analyzed by single-crystal X-ray diffraction. The quantum yield of trans-to-cis photoisomerization of the stilbene group in gadolinium complex 4 was enhanced about five-fold compared with that of HL itself. Other complexes showed slightly enhanced or depressed photoisomerization. The total luminescence quantum yield/sensitization efficiency of europium complex 3 in the solid state and acetonitrile solution were 22.1%/96.7% and 19.3%/97.9%, respectively. The transfer of ligand energy to the Eu3+ ion was highly efficient. This enhanced photoisomerization and luminescence of the stilbene group within complexes was found to be related to the energy level of lanthanide ions and whether a ligand-to-metal center or ligand-to-ligand charge transfer process was present. The interpretation of experimental results is rationally supported by time-dependent density-functional theory calculations. In complex 4, except for the intramolecular absorption transition of HL ligand itself (IL, πHL-π*HL), the presence of the ligand-to-ligand charge transfer transition from tfd to HL (LLCT, πtfd-π*HL) and the triplet state energy of HL being unable to transfer to the higher 6P7/2 excited energy level of the Gd3+ ion would facilitate HL photoisomerization. For complex 3, this was due to reversed ligand-to-ligand charge transfer transition from HL to tfd (LLCT, πHL-π*tfd) and its energy transfer to the metal center. Although the observed radiative lifetimes of NIR luminescent complexes 2 and 5 were around 10 μs, these systems contained only two diketone ligands, indicating that HL still had a certain promoting effect compared with tris(diketonate) lanthanide complexes. These results offer an important route for the design of new lanthanide-based molecular switching materials.
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Affiliation(s)
- Lu Chen
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China.
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10
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Babetto L, Carlotto S, Carlotto A, Rancan M, Bottaro G, Armelao L, Casarin M. Antenna triplet DFT calculations to drive the design of luminescent Ln 3+ complexes. Dalton Trans 2020; 49:14556-14563. [PMID: 33107521 DOI: 10.1039/d0dt02624g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory-based methods have been exploited to look into the structural, vibrational and electronic properties of antenna ligands, all of them being crucial factors for the reliable design of customized luminescent lanthanide (Ln3+) complexes. The X-ray structures, UV-Vis absorption spectra and triplet (T1) energies of three novel β-diketone ligands with a thienyl group and naphthyl (L1), phenanthryl (L2), and pyrenyl (L3) polycyclic aromatic hydrocarbons as substituents have been modelled. Vibronic progressions provide a strong contribution to the L1 and L2 absorption spectra, while the L3 absorption spectrum needs the assumption of different conformational isomers in solution. T1 energies have been estimated either through the vertical- or the adiabatic-transition approach. The comparison with the phosphorescence spectra of Gd3+ complexes allowed us to infer that the latter approach is the most suitable one, in particular when sizable ligands are involved. Results obtained for the isolated antennas can be directly compared with those of the corresponding Ln3+ complexes, due to the unanimously accepted assumption that the excitation is ligand-centred.
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Affiliation(s)
- Luca Babetto
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy.
| | - Silvia Carlotto
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy. and Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Alice Carlotto
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy.
| | - Marzio Rancan
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Gregorio Bottaro
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy. and Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Maurizio Casarin
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy. and Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
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11
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Hidalgo-Rosa Y, Treto-Suárez MA, Schott E, Zarate X, Páez-Hernández D. Sensing mechanism elucidation of a europium(III) metal-organic framework selective to aniline: A theoretical insight by means of multiconfigurational calculations. J Comput Chem 2020; 41:1956-1964. [PMID: 32559320 DOI: 10.1002/jcc.26365] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/15/2020] [Accepted: 05/27/2020] [Indexed: 01/20/2023]
Abstract
A theoretical procedure, via quantum chemical computations, to elucidate the detection principle of the turn-off luminescence mechanism of an Eu-based Metal-Organic Framework sensor (Eu-MOF) selective to aniline, is accomplished. The energy transfer channels that take place in the Eu-MOF, as well as understanding the luminescence quenching by aniline, were investigated using the well-known and accurate multiconfigurational ab initio methods along with sTD-DFT. Based on multireference calculations, the sensitization pathway from the ligand (antenna) to the lanthanide was assessed in detail, that is, intersystem crossing (ISC) from the S1 to the T1 state of the ligand, with subsequent energy transfer to the 5 D0 state of Eu3+ . Finally, emission from the 5 D0 state to the 7 FJ state is clearly evidenced. Otherwise, the interaction of Eu-MOF with aniline produces a mixture of the electronic states of both systems, where molecular orbitals on aniline now appear in the active space. Consequently, a stabilization of the T1 state of the antenna is observed, blocking the energy transfer to the 5 D0 state of Eu3+ , leading to a non-emissive deactivation. Finally, in this paper, it was demonstrated that the host-guest interactions, which are not taken frequently into account by previous reports, and the employment of high-level theoretical approaches are imperative to raise new concepts that explain the sensing mechanism associated to chemical sensors.
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Affiliation(s)
- Yoan Hidalgo-Rosa
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Santiago de Chile, Chile.,Millennium Nuclei on Catalytic Processes toward Sustainable Chemistry (CSC), Santiago, Chile
| | - Manuel A Treto-Suárez
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Santiago de Chile, Chile
| | - Eduardo Schott
- Millennium Nuclei on Catalytic Processes toward Sustainable Chemistry (CSC), Santiago, Chile.,Departamento de Química Inorgánica, UC Energy Research Center, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas, Theoretical and Computational Chemistry Center, Facultad de Ingeniería, Universidad Autónoma de Chile, Santiago, Chile
| | - Dayán Páez-Hernández
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Santiago de Chile, Chile.,Facultad de Ciencias Exactas, Universidad Andres Bello, Center of Applied Nanosciences (CANS), Santiago de Chile, Chile
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12
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Structural Characterization, DFT Calculation, NCI, Scan-Rate Analysis and Antifungal Activity against Botrytis cinerea of ( E)-2-{[(2-Aminopyridin-2-yl)imino]-methyl}-4,6-di- tert-butylphenol (Pyridine Schiff Base). MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25122741. [PMID: 32545715 PMCID: PMC7357110 DOI: 10.3390/molecules25122741] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/30/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022]
Abstract
Botrytis cinerea is a ubiquitous necrotrophic filamentous fungal phytopathogen that lacks host specificity and can affect more than 1000 different plant species. In this work, we explored L1 [(E)-2-{[(2-aminopyridin-2-yl)imino]-methyl}-4,6-di-tert-butylphenol], a pyridine Schiff base harboring an intramolecular bond (IHB), regarding their antifungal activity against Botrytis cinerea. Moreover, we present a full characterization of the L1 by NMR and powder diffraction, as well as UV–vis, in the presence of previously untested different organic solvents. Complementary time-dependent density functional theory (TD-DFT) calculations were performed, and the noncovalent interaction (NCI) index was determined. Moreover, we obtained a scan-rate study on cyclic voltammetry of L1. Finally, we tested the antifungal activity of L1 against two strains of Botrytis cinerea (B05.10, a standard laboratory strain; and A1, a wild type strains isolated from Chilean blueberries). We found that L1 acts as an efficient antifungal agent against Botrytis cinerea at 26 °C, even better than the commercial antifungal agent fenhexamid. Although the antifungal activity was also observed at 4 °C, the effect was less pronounced. These results show the high versatility of this kind of pyridine Schiff bases in biological applications.
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Beltrán-Leiva MJ, Solis-Céspedes E, Páez-Hernández D. The role of the excited state dynamic of the antenna ligand in the lanthanide sensitization mechanism. Dalton Trans 2020; 49:7444-7450. [DOI: 10.1039/d0dt01132k] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A fragmentation scheme has been used to describe the photophysical phenomena associated with the antenna effect in organometallic lanthanide complexes. The theoretical protocol allows justifying the sensitization pathways.
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14
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Wu SY, Guo XQ, Zhou LP, Sun QF. Fine-Tuned Visible and Near-Infrared Luminescence on Self-Assembled Lanthanide-Organic Tetrahedral Cages with Triazole-Based Chelates. Inorg Chem 2019; 58:7091-7098. [DOI: 10.1021/acs.inorgchem.9b00756] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Shi-Yu Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Xiao-Qing Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Li-Peng Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People’s Republic of China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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15
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Beltrán-Leiva MJ, Fuenzalida-Valdivia I, Cantero-López P, Bulhões-Figueira A, Alzate-Morales J, Páez-Hernández D, Arratia-Pérez R. Classical and Quantum Mechanical Calculations of the Stacking Interaction of NdIII Complexes with Regular and Mismatched DNA Sequences. J Phys Chem B 2019; 123:3219-3231. [DOI: 10.1021/acs.jpcb.9b00703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- María J. Beltrán-Leiva
- Relativistic Molecular Physics Group, Universidad Andres Bello, República 275, Santiago 8370146, Chile
| | - Isabel Fuenzalida-Valdivia
- Facultad de Ciencias Biológicas, Centro de Biotecnología Vegetal, Universidad Andres Bello, Santiago 8370146, Chile
| | - Plinio Cantero-López
- Relativistic Molecular Physics Group, Universidad Andres Bello, República 275, Santiago 8370146, Chile
- Center for Applied Nanosciences (CANS), Facultad de Ciencias Exactas, Universidad Andres Bello, Av. República 275, Santiago, 8370146, Chile
| | - Ana Bulhões-Figueira
- Centro Universitário Estácio de Ribeirão Preto, Rua Abrahão Issa Halach 980, Ribeirãnia, Ribeirão Preto, Sao Paulo 14096-160, Brazil
| | - Jans Alzate-Morales
- Centro de Bioinformática y Simulación Molecular (CBSM), Facultad de Ingeniería, Universidad de Talca, 1 Poniente 1141, Talca, Chile
| | - Dayán Páez-Hernández
- Relativistic Molecular Physics Group, Universidad Andres Bello, República 275, Santiago 8370146, Chile
- Center for Applied Nanosciences (CANS), Facultad de Ciencias Exactas, Universidad Andres Bello, Av. República 275, Santiago, 8370146, Chile
| | - Ramiro Arratia-Pérez
- Relativistic Molecular Physics Group, Universidad Andres Bello, República 275, Santiago 8370146, Chile
- Center for Applied Nanosciences (CANS), Facultad de Ciencias Exactas, Universidad Andres Bello, Av. República 275, Santiago, 8370146, Chile
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16
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Gámez-Heredia RG, Cruz-Enríquez A, Aceves R, Höpfl H, Parra-Hake M, Navarro RE, Campos-Gaxiola JJ. Synthesis, structural characterization and photoluminescence properties of mononuclear Eu3+, Gd3+ and Tb3+ complexes derived from cis-(±)-2,4,5-tris(pyridin-2-yl)-imidazoline as ligand. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Berrones-Reyes JC, Muñoz-Flores BM, Cantón-Diáz AM, Treto-Suárez MA, Páez-Hernández D, Schott E, Zarate X, Jiménez-Pérez VM. Quantum chemical elucidation of the turn-on luminescence mechanism in two new Schiff bases as selective chemosensors of Zn2+: synthesis, theory and bioimaging applications. RSC Adv 2019; 9:30778-30789. [PMID: 35529385 PMCID: PMC9072448 DOI: 10.1039/c9ra05010h] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 11/04/2019] [Accepted: 08/21/2019] [Indexed: 12/17/2022] Open
Abstract
We report the synthesis and characterization of two new selective zinc sensors (S,E)-11-amino-8-((2,4-di-tert-butyl-1-hydroxybenzylidene) amino)-11-oxopentanoic acid (A) and (S,E)-11-amino-8-((8-hydroxybenzylidene)amino)-11-oxopentanoic acid (B) based on a Schiff base and an amino acid. The fluorescent probes, after binding to Zn2+ ions, presented an enhancement in fluorescent emission intensity up to 30 times (ϕ = A 50.10 and B 18.14%). The estimated LOD for compounds A and B was 1.17 and 1.20 μM respectively (mixture of acetonitrile : water 1 : 1). Theoretical research has enabled us to rationalize the behaviours of the two selective sensors to Zn2+ synthesized in this work. Our results showed that in the free sensors, PET and ESIPT are responsible for the quenching of the luminescence and that the turn-on of luminescence upon coordination to Zn2+ is mainly induced by the elimination of the PET, which is deeply analysed through EDA, NOCV, molecular structures, excited states and electronic transitions via TD-DFT computations. Confocal fluorescence microscopy experiments demonstrate that compound A could be used as a fluorescent probe for Zn2+ in living cells. Two new selective zinc sensors (S,E)-11-amino-8-((2,4-di-tert-butyl-1-hydroxybenzylidene)amino)-11-oxopentanoic acid (A) and (S,E)-11-amino-8-((8-hydroxybenzylidene)amino)-11-oxopentanoic acid (B) based on a Schiff base and an amino acid are reported.![]()
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Affiliation(s)
| | - Blanca M. Muñoz-Flores
- Universidad Autónoma de Nuevo León
- Facultad de Ciencias Químicas
- Ciudad Universitaria
- México
| | - Arelly M. Cantón-Diáz
- Universidad Autónoma de Nuevo León
- Facultad de Ciencias Químicas
- Ciudad Universitaria
- México
| | - Manuel A. Treto-Suárez
- Doctorado en Fisicoquímica Molecular
- Center of Applied Nanosciences (CENS)
- Universidad Andres Bello
- Santiago de Chile
- Chile
| | - Dayan Páez-Hernández
- Doctorado en Fisicoquímica Molecular
- Center of Applied Nanosciences (CENS)
- Universidad Andres Bello
- Santiago de Chile
- Chile
| | - Eduardo Schott
- Departamento de Química Inorgánica
- UC Energy Research Center
- Facultad de Química de Farmacia
- Pontificia Universidad Católica de Chile
- Santiago
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas
- Theoretical and Computational Chemistry Center
- Facultad de Ingeniería
- Universidad Autónoma de Chile
- Santiago
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18
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Abbas Z, Dasari S, Beltrán-Leiva MJ, Cantero-López P, Páez-Hernández D, Arratia-Pérez R, Butcher RJ, Patra AK. Luminescent europium(iii) and terbium(iii) complexes of β-diketonate and substituted terpyridine ligands: synthesis, crystal structures and elucidation of energy transfer pathways. NEW J CHEM 2019. [DOI: 10.1039/c9nj02838b] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of coordinatively saturated LnIII complexes: [Ln(R-TPY)(TTA)3] (1–6) were designed and structurally characterized and plausible energy transfer (ET) pathways determined using a theoretical method.
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Affiliation(s)
- Zafar Abbas
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Srikanth Dasari
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - María J. Beltrán-Leiva
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | - Plinio Cantero-López
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | - Dayán Páez-Hernández
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | - Ramiro Arratia-Pérez
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | | | - Ashis K. Patra
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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19
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Roitershtein DM, Puntus LN, Vinogradov AA, Lyssenko KA, Minyaev ME, Dobrokhodov MD, Taidakov IV, Varaksina EA, Churakov AV, Nifant'ev IE. Polyphenylcyclopentadienyl Ligands as an Effective Light-Harvesting π-Bonded Antenna for Lanthanide +3 Ions. Inorg Chem 2018; 57:10199-10213. [PMID: 30051707 DOI: 10.1021/acs.inorgchem.8b01405] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A new approach to design "antenna-ligands" to enhance the photoluminescence of lanthanide coordination compounds has been developed based on a π-type ligand-the polyphenyl-substituted cyclopentadienyl. The complexes of di-, tri-, and tetraphenyl cyclopentadienyl ligands with Tb and Gd have been synthesized and all the possible structural types from mononuclear to di- and tetranuclear complexes, as well as a coordination polymer were obtained. All types of the complexes have been studied by single-crystal X-ray diffraction and optical spectroscopy. All terbium complexes are luminescent at ambient temperature and two of them have relatively high quantum yields (50 and 60%). Analysis of energy transfer process has been performed and supported by quantum chemical calculations. The role of a low-lying intraligand charge transfer state formed by extra coordination with K+ in the Tb3+ ion luminescence sensitization is discussed. New aspects for design of lanthanide complexes containing π-type ligands with desired luminescence properties have been proposed.
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Affiliation(s)
- Dmitrii M Roitershtein
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , 47 Leninsky Prospect , 119991 , Moscow , Russia
| | - Lada N Puntus
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,V.A. Kotel'nikov Institute of Radioengineering and Electronics , Russian Academy of Sciences , 11-7 Mokhovaya Str. , 125009 , Moscow , Russia
| | - Alexander A Vinogradov
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia
| | - Konstantin A Lyssenko
- A.N. Nesmeyanov Institute of Organoelement Compounds , Russian Academy of Sciences , 28 Vavilova Str. , 119991 , Moscow , Russia
| | - Mikhail E Minyaev
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia
| | - Mikhail D Dobrokhodov
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia
| | - Ilya V Taidakov
- A.N. Nesmeyanov Institute of Organoelement Compounds , Russian Academy of Sciences , 28 Vavilova Str. , 119991 , Moscow , Russia.,P.N. Lebedev Physical Institute , Russian Academy of Sciences , 53 Leninsky Prospect , Moscow 119991 , Russia
| | - Evgenia A Varaksina
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,P.N. Lebedev Physical Institute , Russian Academy of Sciences , 53 Leninsky Prospect , Moscow 119991 , Russia
| | - Andrei V Churakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , 31 Leninsky Prospect , 119991 , Moscow , Russia
| | - Ilya E Nifant'ev
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,M.V. Lomonosov Moscow State University , Chemistry Department , 1 Leninskie Gory Str., Building 3 , 119991 , Moscow , Russia
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