1
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Rajput S, Zaleśny R, Alam MM. Chromophore Planarity, -BH Bridge Effect, and Two-Photon Activity: Bi- and Ter-Phenyl Derivatives as a Case Study. J Phys Chem A 2023; 127:7928-7936. [PMID: 37721870 PMCID: PMC10544031 DOI: 10.1021/acs.jpca.3c04288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/26/2023] [Indexed: 09/20/2023]
Abstract
In this work, we have employed electronic structure theories to explore the effect of the planarity of the chromophore on the two-photon absorption properties of bi- and ter-phenyl systems. To that end, we have considered 11 bi- and 7 ter-phenyl-based chromophores presenting a donor-π-acceptor architecture. In some cases, the planarity has been enforced by bridging the rings at ortho-positions by -CH2 and/or -BH, -O, -S, and -NH moieties. The results presented herein demonstrate that in bi- and ter-phenyl systems, the planarity achieved via a -CH2 bridge increases the 2PA activity. However, the introduction of a bridge with the -BH moiety perturbs the electronic structure to a large extent, thus diminishing the two-photon transition strength to the lowest electronic excited state. As far as two-photon absorption activity is concerned, this work hints toward avoiding -BH bridge(s) to enforce planarity in bi- and ter-phenyl systems; however, one may use -CH2 bridge(s) to achieve the enhancement of the property in question. All of these conclusions have been supported by in-depth analyses based on generalized few-state models.
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Affiliation(s)
- Swati
Singh Rajput
- Department
of Chemistry, Indian Institute of Technology
Bhilai, GEC Campus, Sejbahar, Raipur, Chhattisgarh 492015, India
| | - Robert Zaleśny
- 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, GEC Campus, Sejbahar, Raipur, Chhattisgarh 492015, India
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2
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Zucolotto Cocca LH, Pelosi AG, Abegão LMG, de Q Garcia R, Mulatier JC, Pitrat D, Barsu C, Andraud C, Mendonça CR, Vivas MG, De Boni L. Unveiling the molecular structure and two-photon absorption properties relationship of branched oligofluorenes. Phys Chem Chem Phys 2023; 25:5021-5028. [PMID: 36722878 DOI: 10.1039/d2cp05189c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Organic molecules have been intensively studied during the last few decades because of their photonics and biological applications. In this material class, the fluorene molecules present outstanding optical features, for example, high values of two-photon absorption (2PA) cross-sections, visible transparency, and high fluorescence quantum yield. Also, it is possible to improve the nonlinear optical response by modifying the fluorene molecular structure. In this context, herein, we have synthesized V and Y-shaped branching oligofluorenes containing two and three fluorene moieties in each branch. Such a molecular strategy may exponentially enhance the nonlinear optical response due to the coherent coupling among the molecular arms. Thus, we combined the use of femtosecond Z-scan spectroscopy and white light transient absorption spectroscopy (TAS) to understand the molecular structure and 2PA property relationship of branching oligofluorenes. The results show that there is a universal relationship between the 2PA cross-section and the effective π-electron number (Neff) given by σ2PA(GM) = (079 ± 0.03)Neff2, which is independent of the molecular shape (linear, V or Y-shaped). Therefore, the intramolecular charge transfer responsible for the cooperative effect among the branches does not occur. This statement is corroborated by the results of the femtosecond TAS technique.
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Affiliation(s)
- Leandro H Zucolotto Cocca
- Photonics Group, Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil.
| | - André Gasparotto Pelosi
- Photonics Group, Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil.
| | - Luis M G Abegão
- Grupo de Fotônica, Instituto de Física, Universidade Federal de Goiás, Goiânia, 74690-900, GO, Brazil
| | - Rafael de Q Garcia
- Photonics Group, Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil.
| | | | - Delphine Pitrat
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Cyrille Barsu
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Chantal Andraud
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Cleber R Mendonça
- Photonics Group, Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil.
| | - Marcelo G Vivas
- Laboratório de Espectroscopia Ótica e Fotônica, Universidade Federal de Alfenas, 37715-400 Pocos de Caldas, MG, Brazil
| | - Leonardo De Boni
- Photonics Group, Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil.
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3
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Tigreros A, Bedoya-Malagón C, Valencia A, Núñez-Portela M, Portilla J. Photophysical and anion sensing properties of a triphenylamine-dioxaborinine trimeric compound. RSC Adv 2023; 13:1757-1764. [PMID: 36712638 PMCID: PMC9828043 DOI: 10.1039/d2ra07498b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 12/29/2022] [Indexed: 01/11/2023] Open
Abstract
Herein, we report the synthesis and photophysical characterization of the novel tris(4-(2,2-difluoro-6-methyl-2H-1λ3,3,2λ4-dioxaborinin-4-yl)phenyl)amine trimeric probe (A2) via the reaction between triphenylamine (1), acetic anhydride, and BF3·OEt2 implying the twelve new bond formation in a one-pot manner. This highly fluorescent compound in solution (φ up to 0.91 at 572 nm) and solid state (φ = 0.24 at 571 nm) showed a better solvatofluorochromism than its analog monomeric A1 due to symmetry-broken charge transfer, which is consistent with high solvent dipolarity (SdP) response in Catalán's multiparametric regression. Notably, A2 had a high sensibility and selectivity for CN- or F- in solution (LODCN-/F- = 0.18/0.70 μM), and CN- can be discriminated from F- by the reaction of A2 with 3.0 equiv. of CN-. In addition, A2 was impregnated on filter paper to prepare test strips that were applied to naked-eye qualitative sensing of CN- or F-. Finally, the octupolar system in A2 allows for better action of two-photon excitation cross-section values when compared with that of the dipolar structure in A1. These findings provide further information for the design of new efficient two-photon absorption dyes.
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Affiliation(s)
- Alexis Tigreros
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de Los AndesCarrera 1 No. 18A-10Bogotá 111711Colombia
| | - Camilo Bedoya-Malagón
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Alejandra Valencia
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Mayerlin Núñez-Portela
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Jaime Portilla
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de Los AndesCarrera 1 No. 18A-10Bogotá 111711Colombia
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4
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V. P. Valverde J, Pelosi AG, H. Zucolotto. Cocca L, Marbello OD, le Bescont J, Breton-Patient C, Piguel S, Silva DL, De Boni L, Mendonça CR. Two-photon absorption in imidazo[1,2-a]pyridine derivatives: study of nonlinear optical response and dipolar properties. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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5
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Arshad MN, Khalid M, Ghulam Shabbir, Asad M, Asiri AM, Alotaibi MM, Braga AAC, Khan A. Donor moieties with D-π-a framing modulated electronic and nonlinear optical properties for non-fullerene-based chromophores. RSC Adv 2022; 12:4209-4223. [PMID: 35425453 PMCID: PMC8981117 DOI: 10.1039/d1ra07183a] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 01/10/2022] [Indexed: 11/21/2022] Open
Abstract
Herein, a series of non-fullerene-based substantial chromophores (FHD1-FHD6) with a D-π-A framework was designed from a synthesized non-fullerene compound (FH) via structural tailoring with various donor moieties. The FH and its designed derivatives were optimized with frequency analysis at the M06/6-311G (d,p) level to confirm their true minima on potential energy surfaces. These optimized geometries were utilized to perform further analyses, such as absorption, natural bonding orbital (NBO), frontier molecular orbital (FMO), and nonlinear orbital (NLO) analyses at the aforesaid level. Quantum chemical study revealed that all the designed chromophores exhibited a lower band gap than that of the parent molecule with the exception of FHD3. Furthermore, density of states (DOS) analysis supported the findings from the FMO study, and this agreement revealed that the efficient charge was transferred from the HOMO to the LUMO. The NBO investigations disclosed that all the compounds comprised donor moieties with positive charges and acceptors having negative charges. Interestingly, π-conjugated linkers were also found with positive charges, showing an effective donating property. These NBO findings explicated that FHD1-FHD6 exhibited an efficient push-pull mechanism. The λ max values of the designed chromophores were observed to be greater than the reference compound. The average polarizability 〈α〉, first hyperpolarizability (β tot), and second hyperpolarizability 〈γ〉 values of FHD2 were found to be 2.170 × 10-22, 3.150 × 10-27, and 4.275 × 10-32 esu, respectively, while all the other derivatives had been reported in the relevant range. Efficient NLO data revealed that FH-based derivatives may contribute significantly toward NLO technology.
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Affiliation(s)
- Muhammad Nadeem Arshad
- Chemistry Department, Faculty of Science, King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia.,Center of Excellence for Advanced Material Research (CEAMR), King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia
| | - Muhammad Khalid
- Department of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
| | - Ghulam Shabbir
- Department of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
| | - Mohammad Asad
- Chemistry Department, Faculty of Science, King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia.,Center of Excellence for Advanced Material Research (CEAMR), King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia.,Center of Excellence for Advanced Material Research (CEAMR), King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia
| | - Maha M Alotaibi
- Chemistry Department, Faculty of Science, King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia
| | - Ataualpa A C Braga
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo Av. Prof. Lineu Prestes, 748 São Paulo 05508-000 Brazil
| | - Anish Khan
- Chemistry Department, Faculty of Science, King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia.,Center of Excellence for Advanced Material Research (CEAMR), King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia
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6
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Grabarz AM, Ośmiałowski B. Benchmarking Density Functional Approximations for Excited-State Properties of Fluorescent Dyes. Molecules 2021; 26:7434. [PMID: 34946515 PMCID: PMC8703901 DOI: 10.3390/molecules26247434] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/28/2021] [Accepted: 12/04/2021] [Indexed: 12/05/2022] Open
Abstract
This study presents an extensive analysis of the predictive power of time-dependent density functional theory in determining the excited-state properties of two groups of important fluorescent dyes, difluoroboranes and hydroxyphenylimidazo[1,2-a]pyridine derivatives. To ensure statistically meaningful results, the data set is comprised of 85 molecules manifesting diverse photophysical properties. The vertical excitation energies and dipole moments (in the electronic ground and excited states) of the aforementioned dyes were determined using the RI-CC2 method (reference) and with 18 density functional approximations (DFA). The set encompasses DFAs with varying amounts of exact exchange energy (EEX): from 0% (e.g., SVWN, BLYP), through a medium (e.g., TPSSh, B3LYP), up to a major contribution of EEX (e.g., BMK, MN15). It also includes range-separated hybrids (CAM-B3LYP, LC-BLYP). Similar error profiles of vertical energy were obtained for both dye groups, although the errors related to hydroxyphenylimidazopiridines are significantly larger. Overall, functionals including 40-55% of EEX (SOGGA11-X, BMK, M06-2X) ensure satisfactory agreement with the reference vertical excitation energies obtained using the RI-CC2 method; however, MN15 significantly outperforms them, providing a mean absolute error of merely 0.04 eV together with a very high correlation coefficient (R2 = 0.98). Within the investigated set of functionals, there is no single functional that would equally accurately determine ground- and excited-state dipole moments of difluoroboranes and hydroxyphenylimidazopiridine derivatives. Depending on the chosen set of dyes, the most accurate μGS predictions were delivered by MN15 incorporating a major EEX contribution (difluoroboranes) and by PBE0 containing a minor EEX fraction (hydroxyphenylimidazopiridines). Reverse trends are observed for μES, i.e., for difluoroboranes the best results were obtained with functionals including a minor fraction of EEX, specifically PBE0, while in the case of hydroxyphenylimidazopiridines, much more accurate predictions were provided by functionals incorporating a major EEX contribution (BMK, MN15).
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Affiliation(s)
- Anna M. Grabarz
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| | - Borys Ośmiałowski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, PL-87100 Toruń, Poland;
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7
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Abegão LMG, Cocca LHZ, Mulatier JC, Pitrat D, Andraud C, Misoguti L, Mendonça CR, Vivas MG, De Boni L. Effective π-electron number and symmetry perturbation effect on the two-photon absorption of oligofluorenes. Phys Chem Chem Phys 2021; 23:18602-18609. [PMID: 34612397 DOI: 10.1039/d1cp02553h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorene-based molecules exhibit significant nonlinear optical responses and multiphoton absorption in the visible region, which, combined with the high fluorescence quantum yield in organic solvents, could make this class of materials potentially engaging in diverse photonics applications. Thus, herein, we have determined the two-photon absorption (2PA) of oligofluorenes containing three, five, and seven repetitive units by employing the wavelength-tunable femtosecond Z-scan technique. Our outcomes have shown that the 2PA cross-section in oligofluorenes presents an enhanced value of around 18 GM per Neff, in which Neff is the effective number of π-electrons, for the pure 2PA allowed transition (11Ag-like → 21Ag-like). Furthermore, a weak 2PA transition was observed in the same spectral region strongly allowed by one-photon absorption (11Ag-like → 11Bu-like). This last result suggests a molecular symmetry perturbation, probably induced by the molecular disorder triggered by the increase of moieties in the oligofluorene structure. We have calculated the permanent dipole moment difference related to the lowest-energy transition using the Lippert-Matagaformalism and the 2PA sum-over-states approach to confirm this assumption. Moreover, we have estimated the fundamental limits for the 2PA cross-section in oligofluorenes.
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Affiliation(s)
- Luis M G Abegão
- Photonics Group, Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil.
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8
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Weststrate N, Hassenrück C, Linseis M, Liles DC, Lotz S, Görls H, Winter RF. The Effect of Remote Donor Substituents on the Properties of Alkoxy and Amino Fischer Carbene Complexes of Tungsten. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Michael Linseis
- Fachbereich Chemie Universität Konstanz Konstanz 78457 Germany
| | - David C. Liles
- Department of Chemistry University of Pretoria Pretoria 0002 South Africa
| | - Simon Lotz
- Department of Chemistry University of Pretoria Pretoria 0002 South Africa
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Jena 07743 Germany
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9
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Vivas MG, Barboza CA, Germino JC, Fonseca RD, Silva DL, Vazquez PAM, Atvars TDZ, Mendonça CR, De Boni L. Molecular Structure-Optical Property Relationship of Salicylidene Derivatives: A Study on the First-Order Hyperpolarizability. J Phys Chem A 2021; 125:99-105. [PMID: 33372791 DOI: 10.1021/acs.jpca.0c08530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first-order hyperpolarizability of π-conjugated organic molecules is of particular interest for the fabrication of electro-optical modulators. Thus, we investigated the relationship between the molecular structure and the incoherent second-order nonlinear optical response (βHRS) of four salicylidene derivatives (salophen, [Zn(salophen)(OH2)], 3,4-benzophen, [Zn(3,4-benzophen)(OH2)]) dissolved in DMSO. For that, we employed the Hyper-Rayleigh Scattering technique with picosecond pulse trains. Our experimental results pointed out dynamic βHRS values between 32.0 ± 4.8 × 10-30 cm5/esu and 58.5 ± 8.0 × 10-30 cm5/esu at 1064 nm, depending on the molecular geometry of the salicylidene molecules. More specifically, the outcomes indicate a considerable increase of βHRS magnitude (∼30%) when in the ligands are incorporated the Zn(II) ion. We ascribed such results to the rise of the planarity of the π-conjugated backbone of the chromophores caused by the Zn(II). Furthermore, we observed an increase of ∼50% in dynamic βHRS when there is a replacement of one hydrogen atom (salophen molecule) by an acetophenone group (3,4-benzophen). This result is related to the increase of the effective π-electron number and the higher charge transfer induced at the excited state. All these findings were interpreted and supported in the light of time-dependent density functional theory (DFT) calculations. Solvent effects were considered in the quantum chemical calculations using the integral equation formalism variant of the polarizable continuum model.
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Affiliation(s)
- Marcelo G Vivas
- Laboratório de Espectroscopia Óptica e Fotônica, Universidade Federal de Alfenas, Poços de Caldas, Minas Gerais 37130-001, Brazil
| | - Cristina A Barboza
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Jose C Germino
- Instituto de Química, Universidade Estadual de Campinas, Campinas, São Paulo 13083-861, Brazil
| | - Ruben D Fonseca
- Departamento de Fisica, Universidad Popular del Cesar, Barrio Sabana, 2000004 Valledupar, Cesar, Colombia
| | - Daniel L Silva
- Departamento de Ciências da Natureza, Matemática e Educação, Universidade Federal de São Carlos, Rod. Anhanguera-Km 174, Araras, São Paulo 13600-970, Brazil
| | - Pedro A M Vazquez
- Instituto de Química, Universidade Estadual de Campinas, Campinas, São Paulo 13083-861, Brazil
| | - Teresa D Z Atvars
- Instituto de Química, Universidade Estadual de Campinas, Campinas, São Paulo 13083-861, Brazil
| | - Cleber R Mendonça
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, São Paulo 13566-590, Brazil
| | - Leonardo De Boni
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, São Paulo 13566-590, Brazil
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10
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Dipold J, Vivas MG, Koeckelberghs G, Siqueira JP, De Boni L, Mendonca CR. Probing the Strong Near-IR Two-Photon Transition in Supramolecular Triphenylamine-based Polymers by Nonlinear Absorption Spectroscopy. J Phys Chem B 2020; 124:6147-6153. [PMID: 32539394 DOI: 10.1021/acs.jpcb.0c04127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Due to their capability of film formation and remarkable optical features, semiconductor polymers with high two-photon absorption (2PA) have been studied as potential candidates for the development of organic photonic platforms. Furthermore, there is a high demand for photonic devices operating in the near-infrared (IR) region. However, the magnitude of the nonlinear optical response of random coil polymers in the IR region is weak due to the loss of molecular structure caused by increasing the π-conjugated backbone. Thus, herein we aim to investigate the molecular structure and 2PA features relationship for four polymers with supramolecular (helical) rodlike structure. Such polymers have a rigid core based on triphenylamine groups connected to the chiral binaphthalene units and a strong electron-withdrawing group (EWG). This kind of structure allows a very high chromophore density, which was responsible for generating 2PA cross-section between 305 GM and 565 GM in the near-IR (900-1300 nm), depending on the EWG strength. in light of the two-level model within the sum-overstates approach, we estimated the degree of intramolecular charge transfer induced by 2PA in the IR region, and values as high as 50-70% were found. Such a critical outcome allows the 2PA cross-section in the IR region to remain high even though the ratio between the visible/IR-band 2PA cross-section increases as a function of EWG strength.
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Affiliation(s)
- Jessica Dipold
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil
| | - Marcelo G Vivas
- Laboratório de Espectroscopia Óptica e Fotônica, Universidade Federal de Alfenas, Poços de Caldas, Minas Gerais 37715-400, Brazil
| | - Guy Koeckelberghs
- Laboratory for Polymer Synthesis, Katholieke Universiteit Leuven, Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Jonathas P Siqueira
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil.,Instituto de Fı́sica "Gleb Wataghin", Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - Leonardo De Boni
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil
| | - Cleber R Mendonca
- Instituto de Fı́sica de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, São Paulo, Brazil
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11
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Prabu S, David E, Viswanathan T, Thirumoorthy K, Panda T, Dragonetti C, Colombo A, Marinotto D, Righetto S, Roberto D, Palanisami N. NLO-active Y-shaped ferrocene conjugated imidazole chromophores as precursors for SHG polymeric films. Dalton Trans 2020; 49:1854-1863. [PMID: 31967141 DOI: 10.1039/c9dt03637g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New Y-shaped ferrocene conjugated imidazole chromophores were prepared and fully characterized. The Y-shaped structure was confirmed by the single crystal X-ray diffraction technique. The chromophores show interesting second-order nonlinear optical (NLO) properties in solution, as determined by the Electric-Field Induced Second Harmonic generation (EFISH) technique. Remarkably, the trifluoro substituted compound 3 is characterized by a high μβEFISH value and has good potential as a molecular building block for composite films with Second Harmonic Generation (SHG) properties. For all compounds, the dipole moments and frontier orbital energies were calculated by the Density Functional Theoretical method.
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Affiliation(s)
- Selvam Prabu
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore 632014, Tamilnadu, India.
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12
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Kournoutas F, Fihey A, Malval JP, Spangenberg A, Fecková M, le Poul P, Katan C, Robin-le Guen F, Bureš F, Achelle S, Fakis M. Branching effect on the linear and nonlinear optical properties of styrylpyrimidines. Phys Chem Chem Phys 2020; 22:4165-4176. [DOI: 10.1039/c9cp06476a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The branching effect on the photophysical properties of styrylpyrimidines is studied experimentally and theoretically.
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Affiliation(s)
| | - Arnaud Fihey
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F 35000 Rennes
- France
| | - Jean-Pierre Malval
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361
- Université de Haute Alsace
- Mulhouse
- France
| | - Arnaud Spangenberg
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361
- Université de Haute Alsace
- Mulhouse
- France
| | - Michaela Fecková
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F 35000 Rennes
- France
| | - Pascal le Poul
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F 35000 Rennes
- France
| | - Claudine Katan
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F 35000 Rennes
- France
| | - Françoise Robin-le Guen
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F 35000 Rennes
- France
| | - Filip Bureš
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice 53210
- Czech Republic
| | - Sylvain Achelle
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F 35000 Rennes
- France
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13
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Microfabrication of 3D-hydrogels via two-photon polymerization of poly(2-ethyl-2-oxazoline) diacrylates. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109295] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Zhu Y, Ma F, Ma C, Han H, Sun R, Peng H, Xie M. Enhanced dielectric and electrical energy storage capability of polymers with combined azobenzene and triphenylamine side groups by ring-opening metathesis polymerization. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121886] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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15
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Abdel-Khalek H, Shalaan E, El Salam MA, El-Sagheer AM, El-Mahalawy AM. Effect of thermal annealing on structural, linear and nonlinear optical properties of 1, 4, 5, 8-naphthalene tetracarboxylic dianhydride thin films. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.10.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Klikar M, Seintis K, Polyzos I, Pytela O, Mikysek T, Almonasy N, Fakis M, Bureš F. Star-Shaped Push-Pull Molecules with a Varied Number of Peripheral Acceptors: An Insight into Their Optoelectronic Features. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Milan Klikar
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
| | - Kostas Seintis
- Department of Physics; University of Patras; GR-26504 Patras Greece
| | - Ioannis Polyzos
- Department of Physics; University of Patras; GR-26504 Patras Greece
- Foundation of Research and Technology Hellas; Institute of Chemical Engineering Sciences (FORTH/ICE-HT); Stadiou Str. P.O. Box 1414 Rio-Patras Greece
| | - Oldřich Pytela
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
| | - Tomáš Mikysek
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Studentská 573 Pardubice 53210 Czech Republic
| | - Numan Almonasy
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
| | - Mihalis Fakis
- Department of Physics; University of Patras; GR-26504 Patras Greece
| | - Filip Bureš
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
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17
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Li F, Zhao B, Chen Y, Zhang Y, Wang T, Xue S. Synthesis, characterization, and nonlinear optical (NLO) properties of truxene-cored diphenylamine derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 185:20-26. [PMID: 28531846 DOI: 10.1016/j.saa.2017.05.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/11/2017] [Accepted: 05/14/2017] [Indexed: 06/07/2023]
Abstract
Three star-shaped compounds based on a truxene core (FS11, FS12 and FS13) were prepared. The truxene core is incorporating with asymmetric diphenylamines, including one phenyl of diphenylamine substituted by methoxy group and the other phenyl substituted by tolyl, fluorophenyl and phenylethynyl for FS11, FS12 and FS13, respectively. Their one-photon, two-photon absorption, geometric structures, electrochemical behavior and thermal properties were investigated. The absorption maxima of charge transfer band for FS11, FS12 and FS13 are 375nm, 373nm and 383nm, and the corresponding molar extinction coefficients of FS11, FS12 and FS13 is 79,950M-1cm-1, 67,220M-1cm-1 and 108,780M-1cm-1. The "pull-push" structure promotes charge transfer between asymmetric diphenylamine branches and the truxene core. Their two-photon absorbtion property is measured by two-photon induced fluorescence. The maximum two-photon cross-sections values of FS11, FS12 and FS13 are excited at 750nm, which are 260 GM, 204GM and 367 GM, respectively.
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Affiliation(s)
- Fusheng Li
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Baodong Zhao
- State Key Laboratory of Chemical Resource Engineering, College of Science, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yu Chen
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China.
| | - Yufei Zhang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Tao Wang
- State Key Laboratory of Chemical Resource Engineering, College of Science, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Song Xue
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
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18
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Sirbu D, Butcher JB, Waddell PG, Andras P, Benniston AC. Locally Excited State-Charge Transfer State Coupled Dyes as Optically Responsive Neuron Firing Probes. Chemistry 2017; 23:14639-14649. [DOI: 10.1002/chem.201703366] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Indexed: 01/31/2023]
Affiliation(s)
- Dumitru Sirbu
- Molecular Photonics Laboratory; School of Chemistry; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - John B. Butcher
- School of Computing and Mathematics; Keele University; Keele ST5 8BG UK
| | - Paul G. Waddell
- Crystallography Laboratory; School of Chemistry; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Peter Andras
- School of Computing and Mathematics; Keele University; Keele ST5 8BG UK
| | - Andrew C. Benniston
- Molecular Photonics Laboratory; School of Chemistry; Newcastle University; Newcastle upon Tyne NE1 7RU UK
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19
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Gonçalves Vivas M, Dario Fonseca R, de Paula Siqueira J, Renato Mendonça C, Rodrigues PC, De Boni L. Femtosecond Two-Photon Absorption Spectroscopy of Poly(fluorene) Derivatives Containing Benzoselenadiazole and Benzothiadiazole. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E512. [PMID: 28772872 PMCID: PMC5458991 DOI: 10.3390/ma10050512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/19/2017] [Accepted: 04/28/2017] [Indexed: 11/23/2022]
Abstract
We have investigated the molecular structure and two-photon absorption (2PA) properties relationship of two push-pull poly(fluorene) derivatives containing benzoselenadiazole and benzothiadiazole units. For that, we have used the femtosecond wavelength-tunable Z-scan technique with a low repetition rate (1 kHz) and an energy per pulse on the order of nJ. Our results show that both 2PA spectra present a strong 2PA (around 600 GM (1 GM = 1 × 10-50 cm⁴·s·photon-1)) band at around 720 nm (transition energy 3.45 eV) ascribed to the strongly 2PA-allowed 1Ag-like → mAg-like transition, characteristic of poly(fluorene) derivatives. Another 2PA band related to the intramolecular charge transfer was also observed at around 900 nm (transition energy 2.75 eV). In both 2PA bands, we found higher 2PA cross-section values for the poly(fluorene) containing benzothiadiazole unit. This outcome was explained through the higher charge redistribution at the excited state caused by the benzothiadiazole group as compared to the benzoselenadiazole and confirmed by means of solvatochromic Stokes shift measurements. To shed more light on these results, we employed the sum-over-states approach within the two-energy level model to estimate the maximum permanent dipole moment change related to the intramolecular charge transfer transition.
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Affiliation(s)
- Marcelo Gonçalves Vivas
- Instituto de Ciência e Tecnologia, Universidade Federal de Alfenas, Poços de Caldas, MG 37715-400, Brazil.
| | - Ruben Dario Fonseca
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP 13566-590, Brazil.
- Departamento de Ciencias Naturales y Exactas, Universidad de la Costa, Barranquilla 080002, Colombia.
| | | | - Cleber Renato Mendonça
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP 13566-590, Brazil.
| | - Paula C Rodrigues
- Departamento Acadêmico de Química e Biologia, Universidade Tecnológica Federal do Paraná, Curitiba, PR 81280-340, Brazil.
| | - Leonardo De Boni
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP 13566-590, Brazil.
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20
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Klikar M, Kityk IV, Kulwas D, Mikysek T, Pytela O, Bureš F. Multipodal arrangement of push–pull chromophores: a fundamental parameter affecting their electronic and optical properties. NEW J CHEM 2017. [DOI: 10.1039/c6nj02994a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Branching, along with the acceptor nature and π-system length, was revealed as a crucial factor affecting the fundamental optoelectronic properties of push–pull molecules.
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Affiliation(s)
- M. Klikar
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - I. V. Kityk
- Faculty of Electrical Engineering
- Institute of Electronic Systems
- Czestochowa University of Technology
- Czestochowa
- Poland
| | - D. Kulwas
- Faculty of Electrical Engineering
- Institute of Electronic Systems
- Czestochowa University of Technology
- Czestochowa
- Poland
| | - T. Mikysek
- Department of Analytical Chemistry
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice 53210
- Czech Republic
| | - O. Pytela
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - F. Bureš
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
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21
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Seintis K, Agathangelou D, Cvejn D, Almonasy N, Bureš F, Giannetas V, Fakis M. Femtosecond to nanosecond studies of octupolar molecules and their quadrupolar and dipolar analogues. Phys Chem Chem Phys 2017; 19:16485-16497. [DOI: 10.1039/c7cp01463e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The fs–ps anisotropy dynamics of octupolar, quadrupolar and dipolar molecules with different π-bridges.
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Affiliation(s)
- K. Seintis
- Department of Physics
- University of Patras
- Patras
- Greece
| | | | - D. Cvejn
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - N. Almonasy
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - F. Bureš
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - V. Giannetas
- Department of Physics
- University of Patras
- Patras
- Greece
| | - M. Fakis
- Department of Physics
- University of Patras
- Patras
- Greece
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22
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Lee S, Kim D. Symmetry-Dependent Intramolecular Charge Transfer Dynamics of Pyrene Derivatives Investigated by Two-Photon Excitation. J Phys Chem A 2016; 120:9217-9223. [DOI: 10.1021/acs.jpca.6b10819] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sangsu Lee
- Department
of Chemistry and Spectroscopy Laboratory for Functional π-Electronic
Systems, Yonsei University, Seoul 03722, Korea
| | - Dongho Kim
- Department
of Chemistry and Spectroscopy Laboratory for Functional π-Electronic
Systems, Yonsei University, Seoul 03722, Korea
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23
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Zhu H, Wang X, Ma R, Kuang Z, Guo Q, Xia A. Intramolecular Charge Transfer and Solvation of Photoactive Molecules with Conjugated Push-Pull Structures. Chemphyschem 2016; 17:3245-3251. [DOI: 10.1002/cphc.201600674] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Indexed: 01/23/2023]
Affiliation(s)
- Huaning Zhu
- Beijing National Laboratory for Molecular Sciences (BNLMS), and; Key Laboratory of Photochemistry, Institute of Chemistry; Chinese Academy of Sciences; Bejing 100190 China
- University of Chinese Academy of Sciences; Bejing 100049 China
| | - Xian Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), and; Key Laboratory of Photochemistry, Institute of Chemistry; Chinese Academy of Sciences; Bejing 100190 China
- University of Chinese Academy of Sciences; Bejing 100049 China
| | - Renjun Ma
- Beijing National Laboratory for Molecular Sciences (BNLMS), and; Key Laboratory of Photochemistry, Institute of Chemistry; Chinese Academy of Sciences; Bejing 100190 China
- University of Chinese Academy of Sciences; Bejing 100049 China
| | - Zhuoran Kuang
- Beijing National Laboratory for Molecular Sciences (BNLMS), and; Key Laboratory of Photochemistry, Institute of Chemistry; Chinese Academy of Sciences; Bejing 100190 China
- University of Chinese Academy of Sciences; Bejing 100049 China
| | - Qianjin Guo
- Beijing National Laboratory for Molecular Sciences (BNLMS), and; Key Laboratory of Photochemistry, Institute of Chemistry; Chinese Academy of Sciences; Bejing 100190 China
| | - Andong Xia
- Beijing National Laboratory for Molecular Sciences (BNLMS), and; Key Laboratory of Photochemistry, Institute of Chemistry; Chinese Academy of Sciences; Bejing 100190 China
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24
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de Souza TGB, Vivas MG, Mendonça CR, Plunkett S, Filatov MA, Senge MO, De Boni L. Studying the intersystem crossing rate and triplet quantum yield of meso-substituted porphyrins by means of pulse train fluorescence technique. J PORPHYR PHTHALOCYA 2016. [DOI: 10.1142/s1088424616500048] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Excited state dynamics, particularly intersystem crossing, of a set of meso-substituted porphyrins bearing different electron–donor and acceptor groups was studied by pulse train fluorescence technique. Triplet quantum yield was found to be critically dependent on the nature of meso-substituents in the porphyrin system. Porphyrins with meso methoxyphenyl groups were found to show high triplet quantum yields ([Formula: see text] between 0.70 and 0.81). Moreover, the quantity of methoxyphenyl groups and the substitution pattern directly influence [Formula: see text]. Alternatively, porphyrins attached to nitrophenyl group possess low triplet quantum yield values (~0.3). The observed structure-properties relationships suggest new ways for tuning the optical properties of porphyrins via chemical modification.
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Affiliation(s)
| | - Marcelo Gonçalves Vivas
- Instituto de Ciência de Tecnologia, Universidade Federal de Alfenas, Cidade Universitária-BR 267 Km 533, 37715-400 Poços de Caldas, MG, Brazil
| | - Cleber Renato Mendonça
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos-SP, Brazil
| | - Shane Plunkett
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Trinity College Dublin, Dublin 2, Ireland
| | - Mikhail A. Filatov
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Trinity College Dublin, Dublin 2, Ireland
| | - Mathias O. Senge
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Trinity College Dublin, Dublin 2, Ireland
| | - Leonardo De Boni
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos-SP, Brazil
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25
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Zhu H, Li M, Hu J, Wang X, Jie J, Guo Q, Chen C, Xia A. Ultrafast Investigation of Intramolecular Charge Transfer and Solvation Dynamics of Tetrahydro[5]-helicene-Based Imide Derivatives. Sci Rep 2016; 6:24313. [PMID: 27074814 PMCID: PMC4830958 DOI: 10.1038/srep24313] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 03/24/2016] [Indexed: 11/09/2022] Open
Abstract
We report the excited-state intramolecular charge transfer (ICT) characteristics of four tetrahydro[5] helicene-based imide (THHBI) derivatives with various electron-donating substitutes in different polarity of solvents using steady-state, time-resolved transient absorption (TA) spectroscopy. It is found that, the small bathochromic-shift of the absorption spectra but large red shift of the emission spectra for all dyes with increasing solvent polarity indicates the larger dipole moment of the excited state compared to ground state. The results of theoretical calculations exhibit the charge transfer from the terminal donors to helical backbone, which accounts for the degrees of red shift of the emission spectra from different extent of ICT nature. Time-resolved TA spectra recorded as a function of electron-donating substitutes and solvent polarity show the dye with stronger donors (THHBI-PhNPh2) in more polar solvent behaves faster excited-state ICT relaxation, leading to the formation of solvent-stabilized ICT state (ICT' state) from the excited ICT state; The dyes (THHBI-Ph, THHBI-PhCF3 and THHBI-PhOMe) with relative weaker donors show weaker dependence on solvent polarity, and instead of that intersystem crossing (ISC) becomes possible from ICT state to triplet state.
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Affiliation(s)
- Huaning Zhu
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Meng Li
- Key Laboratory of Molecular Recognition and Function, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Jiangpu Hu
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Xian Wang
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Jialong Jie
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Qianjin Guo
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Chuanfeng Chen
- Key Laboratory of Molecular Recognition and Function, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Andong Xia
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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26
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Mróz MM, Benedini S, Forni A, Botta C, Pasini D, Cariati E, Virgili T. Long-living optical gain induced by solvent viscosity in a push–pull molecule. Phys Chem Chem Phys 2016; 18:18289-96. [DOI: 10.1039/c6cp02988d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The combination of continuum and ultrafast pump–probe spectroscopy, in viscous and non-viscous environments, with DFT and TDDFT calculations, is effective in unraveling important features of the twisted intramolecular charge transfer mechanism in a new push–pull molecule that possesses aggregation induced emission properties.
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Affiliation(s)
- M. M. Mróz
- IFN-CNR, Dipartimento di Fisica
- Politecnico di Milano
- 20132 Milano
- Italy
| | - S. Benedini
- Department of Chemistry and INSTM Research Unit
- University of Pavia
- 27100 Pavia
- Italy
| | - A. Forni
- ISTM – CNR
- c/o Dipartimento di Chimica
- Università degli Studi di Milano and INSTM Research Unit
- 20133 Milano
- Italy
| | - C. Botta
- ISMAC – CNR and INSTM Research Unit
- 20133 Milano
- Italy
| | - D. Pasini
- Department of Chemistry and INSTM Research Unit
- University of Pavia
- 27100 Pavia
- Italy
| | - E. Cariati
- Università degli Studi di Milano and INSTM Research Unit
- Dipartimento di Chimica
- 20133 Milano
- Italy
| | - T. Virgili
- IFN-CNR, Dipartimento di Fisica
- Politecnico di Milano
- 20132 Milano
- Italy
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27
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Moreno J, Dobryakov AL, Ioffe IN, Granovsky AA, Hecht S, Kovalenko SA. Broadband transient absorption spectroscopy with 1- and 2-photon excitations: Relaxation paths and cross sections of a triphenylamine dye in solution. J Chem Phys 2015; 143:024311. [DOI: 10.1063/1.4926574] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- J. Moreno
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-St. 2, 12489 Berlin, Germany
| | - A. L. Dobryakov
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-St. 2, 12489 Berlin, Germany
| | - I. N. Ioffe
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
| | | | - S. Hecht
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-St. 2, 12489 Berlin, Germany
| | - S. A. Kovalenko
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-St. 2, 12489 Berlin, Germany
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28
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Silva DL, Fonseca RD, Vivas MG, Ishow E, Canuto S, Mendonca CR, De Boni L. Experimental and theoretical investigation of the first-order hyperpolarizability of a class of triarylamine derivatives. J Chem Phys 2015; 142:064312. [DOI: 10.1063/1.4906893] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Daniel L. Silva
- Departamento de Ciências da Natureza, Matemática e Educação, Universidade Federal de São Carlos, Rod. Anhanguera–Km 174, 13600-970 Araras, SP, Brazil
- Instituto de Física, Universidade de São Paulo, CP 66318, 05314-970 São Paulo, SP, Brazil
| | - Ruben D. Fonseca
- Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil
| | - Marcelo G. Vivas
- Instituto de Ciência de Tecnologia, Universidade Federal de Alfenas, Cidade Universitária - BR 267 Km 533, 37715-400 Poços de Caldas, MG, Brazil
| | - E. Ishow
- CEISAM–UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, 44322 Nantes, France
| | - Sylvio Canuto
- Instituto de Física, Universidade de São Paulo, CP 66318, 05314-970 São Paulo, SP, Brazil
| | - Cleber R. Mendonca
- Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil
| | - Leonardo De Boni
- Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil
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29
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Zaleśny R, Murugan NA, Gel’mukhanov F, Rinkevicius Z, Ośmiałowski B, Bartkowiak W, Ågren H. Toward Fully Nonempirical Simulations of Optical Band Shapes of Molecules in Solution: A Case Study of Heterocyclic Ketoimine Difluoroborates. J Phys Chem A 2014; 119:5145-52. [DOI: 10.1021/jp5094417] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | | | | | - Borys Ośmiałowski
- Faculty
of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, PL-85326 Bydgoszcz, Poland
| | - Wojciech Bartkowiak
- Institute
of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
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30
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