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Narita H, Min H, Kubo N, Hattori I, Yasuda T, Yamaguchi S. Bis-Ortho-Donor-Modification of Boracyclic π-Electron Systems beyond Steric Protection to Produce Thermally Activated Delayed Fluorescence Materials. Angew Chem Int Ed Engl 2024; 63:e202405412. [PMID: 38714489 DOI: 10.1002/anie.202405412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/02/2024] [Accepted: 05/02/2024] [Indexed: 05/10/2024]
Abstract
Polycyclic π-conjugated compounds that contain tricoordinate boron atoms at their periphery represent an attractive class of materials with electron-accepting character. Their molecular design generally requires the introduction of a bulky aryl group onto the boron atom, where it provides predominantly kinetic stabilization. The addition of extra functionality to the aryl group on the boron atom can be expected to further expand the potential utility of this class of materials. Herein, we report the synthesis of a series of boracyclic π-conjugated molecules with firm ortho B⋅⋅⋅N nonbonding interactions by introducing N-containing electron-donors at the ortho-positions of the aryl group on the boron atom. X-ray crystallographic analysis revealed that the combination of a planar boracyclic π-skeleton with only sp2 carbons and a strong electron-donating phenothiazine moiety results in a particularly short B⋅⋅⋅N distance. Theoretical study provided insights into the inherent nature of the B⋅⋅⋅N interaction. Owing to their donor-acceptor (D-A) structures, these molecules exhibit substantially red-shifted fluorescence in solution, albeit that the fluorescence quantum yields (ΦF) are low. In contrast, when incorporated into films, these compounds exhibit thermally activated delayed fluorescence (TADF) with improved ΦF values. Organic light-emitting diodes (OLEDs) fabricated using the ortho-donor-substituted derivatives exhibit orange-red electroluminescence.
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Affiliation(s)
- Hiroki Narita
- Department of Chemistry, Graduate School of Science, Research Center for Materials Science (RCMS), Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Hyukgi Min
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
- Institute for Advanced Study, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Nanami Kubo
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
- Institute for Advanced Study, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Izumi Hattori
- Department of Chemistry, Graduate School of Science, Research Center for Materials Science (RCMS), Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Takuma Yasuda
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
- Institute for Advanced Study, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, Research Center for Materials Science (RCMS), Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8601, Japan
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2
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Nandi RP, Chandra B, Ghosh S, Sarma SP, Geremia S, Hickey N, Thilagar P. Pyrrole βC-B-N Fused Porphyrins: Molecular Structures and Opto-Electrochemical Studies. Chemistry 2024; 30:e202304219. [PMID: 38155424 DOI: 10.1002/chem.202304219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 12/28/2023] [Indexed: 12/30/2023]
Abstract
Herein, we report the design, synthesis, structure, and electrochemical study of doubly βC-B-N fused Ni(II) porphyrins (1-trans, 1-cis, 2-trans, and 2-cis). These compounds have been synthesized from A2B2 type dipyridyl Ni(II) porphyrins (Ar=Ph for 1 a; Ar=C6F5 for 2 a) via Lewis base-directed electrophilic aromatic borylation reactions. The solution state structures of these compounds have been established using 1H NMR, 11B NMR, 1H-1H COSY, 1H-13C HSQC, and 19F-13C HSQC NMR techniques. Single crystal X-ray analysis have revealed that 1-trans, 1-cis, and 2-trans adopt ruffled conformations, with alternate meso-carbons on the opposite sides of the mean porphyrin plane. The Soret bands in the absorption spectra of the B-N fused molecules are ~40 nm redshifted compared to unfused Ni(II) porphyrin precursors. The B-N fusion have diminished the redox potential of fused porphyrins. Although 1-trans and 1-cis, show four oxidation processes, 2-trans and 2-cis show only three oxidation processes. DFT studies have revealed that the tetrahedral geometry of the boron has induced a twist in the π-conjugation, which destabilizes the HOMO and stabilizes the LUMO in 1-trans, 1-cis, 2-trans, and 2-cis.
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Affiliation(s)
- Rajendra Prasad Nandi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Brijesh Chandra
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Subhajit Ghosh
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Siddhartha P Sarma
- Molecular Biophysics Unit, Division of Biological Sciences, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Silvano Geremia
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via L. Giorgieri 1, 34127, Trieste, ITALY
| | - Neal Hickey
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via L. Giorgieri 1, 34127, Trieste, ITALY
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
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3
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Manha Veedu R, Niemeyer N, Bäumer N, Kartha Kalathil K, Neugebauer J, Fernández G. Sterically Allowed H-type Supramolecular Polymerizations. Angew Chem Int Ed Engl 2023; 62:e202314211. [PMID: 37797248 DOI: 10.1002/anie.202314211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/05/2023] [Accepted: 10/05/2023] [Indexed: 10/07/2023]
Abstract
The functionalization of π-conjugated scaffolds with sterically demanding substituents is a widely used tactic to suppress cofacial (H-type) stacking interactions, which may even inhibit self-assembly. Contrary to expectations, we demonstrate herein that increasing steric effects can result in an enhanced thermodynamic stability of H-type supramolecular polymers. In our approach, we have investigated two boron dipyrromethene (BODIPY) dyes with bulky phenyl (2) and mesityl (3) meso-substituents and compared their self-assembly in nonpolar media with that of a parent meso-methyl BODIPY 1 lacking bulky groups. While the enhanced steric demand induces pathway complexity, the superior thermodynamic stability of the H-type pathways can be rationalized in terms of additional enthalpic gain arising from intermolecular C-H⋅⋅⋅F-B interactions of the orthogonally arranged aromatic substituents, which overrule their inherent steric demand. Our findings underline the importance of balancing competing non-covalent interactions in self-assembly.
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Affiliation(s)
- Rasitha Manha Veedu
- Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
| | - Niklas Niemeyer
- Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
- Universität Münster, Center for Multiscale Theory and Computation, Corrensstraße 36, 48149, Münster, Germany
| | - Nils Bäumer
- Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
| | - Krishnan Kartha Kalathil
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills, Kottayam, Kerala-686560, India
| | - Johannes Neugebauer
- Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
- Universität Münster, Center for Multiscale Theory and Computation, Corrensstraße 36, 48149, Münster, Germany
| | - Gustavo Fernández
- Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
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4
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Inai N, Yamaguchi S, Yanai T. Theoretical Insight into the Effect of Phosphorus Oxygenation on Nonradiative Decays: Comparative Analysis of P-Bridged Stilbene Analogs. ACS PHYSICAL CHEMISTRY AU 2023; 3:540-552. [PMID: 38034034 PMCID: PMC10683489 DOI: 10.1021/acsphyschemau.3c00038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 12/02/2023]
Abstract
Incorporation of the phosphorus element into a π-conjugated skeleton offers valuable prospects for adjusting the electronic structure of the resulting functional π-electron systems. Trivalent phosphorus has the potential to decrease the LUMO level through σ*-π* interaction, which is further enhanced by its oxygenation to the pentavalent P center. This study shows that utilizing our computational analysis to examine excited-state dynamics based on radiative/nonradiative rate constants and fluorescence quantum yield (ΦF) is effective for analyzing the photophysical properties of P-containing organic dyes. We theoretically investigate how the trivalent phosphanyl group and pentavalent phosphine oxide moieties affect radiative and nonradiative decay processes. We evaluate four variations of P-bridged stilbene analogs. Our analysis reveals that the primary decay pathway for photoexcited bis-phosphanyl-bridged stilbene is the intersystem crossing (ISC) to the triplet state and nonradiative. The oxidation of the phosphine moiety, however, suppresses the ISC due to the relative destabilization of the triplet states. The calculated rate constants match an increase in experimental ΦF from 0.07 to 0.98, as simulated from 0.23 to 0.94. The reduced HOMO-LUMO gap supports a red shift in the fluorescence spectra relative to the phosphine analog. The thiophene-fused variant with the nonoxidized trivalent P center exhibits intense emission with a high ΦF, 0.95. Our prediction indicates that the ISC transfer is obstructed owing to the relatively destabilized triplet state induced by the thiophene substitution. Conversely, the thiophene-fused analog with the phosphine oxide moieties triggers a high-rate internal conversion mediated by conical intersection, leading to a decreased ΦF.
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Affiliation(s)
- Naoto Inai
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department
of Chemistry, Graduate School of Science and Integrated Research Consortium
on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
- Institute
of Transformative Bio-Molecules, (WPI-ITbM), Nagoya University, Furo-cho,
Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Takeshi Yanai
- Department
of Chemistry, Graduate School of Science and Integrated Research Consortium
on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
- Institute
of Transformative Bio-Molecules, (WPI-ITbM), Nagoya University, Furo-cho,
Chikusa-ku, Nagoya, Aichi 464-8602, Japan
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5
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Arunlimsawat S, Funchien P, Chasing P, Saenubol A, Sudyoadsuk T, Promarak V. A deep-red fluorophore based on naphthothiadiazole as emitter with hybridized local and charge transfer and ambipolar transporting properties for electroluminescent devices. Beilstein J Org Chem 2023; 19:1664-1676. [PMID: 37942020 PMCID: PMC10630680 DOI: 10.3762/bjoc.19.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 10/20/2023] [Indexed: 11/10/2023] Open
Abstract
Herein, we report the synthesis and characterization of an efficient ambipolar charge-carrier-transporting deep-red fluorophore (TPECNz) based on a donor-acceptor-donor (D-A-D)-type molecule and its application as a non-doped emitter in an organic light-emitting diode (OLED). The fluorophore TPECNz contains naphtho[2,3-c][1,2,5]thiadiazole (Nz) as a strong acceptor unit symmetrically functionalized with N-(4-(1,2,2-triphenylvinyl)phenyl)carbazole as a donor and aggregation-induced emission (AIE) luminogen. The experimental (solvatochromic and emission in THF/water mixtures studies) and theoretical investigations prove that TPECNz retains cooperative hybridized local and charge transfer (HLCT) and weak AIE features. Thanks to its D-A-D-type structure with a proper twist angle between the D and A units, a strong electron deficiency of the Nz unit, and electron-donating and hole-transporting natures of carbazole, TPECNz exhibits a strong deep red emission (λem = 648 nm) with a high fluorescence quantum yield of 96%, outstanding thermal property (Tg = 236 °C), and ambipolar charge-carrier-transporting property with a decent balance of mobility of electrons (1.50 × 10-5 cm2 V-1 s-1) and holes (4.42 × 10-6 cm2 V-1 s-1). TPECNz is successfully employed as a non-doped emitter in an OLED which displays deep red electroluminescent emission peaked at 659 nm with CIE coordinates of (0.664, 0.335)), an EQEmax of 3.32% and exciton utilization efficiency (EUE) of 47%.
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Affiliation(s)
- Suangsiri Arunlimsawat
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Patteera Funchien
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Pongsakorn Chasing
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Atthapon Saenubol
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Taweesak Sudyoadsuk
- Frontier Research Center, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Vinich Promarak
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
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6
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Ambore SD, Rao CRK, Bhosale SV, Bhosale SV. Donor-acceptor molecular architecture involving carbazole/pyrazine/anthraquinone units for efficient supercapacitor applications. Chem Commun (Camb) 2023; 59:10384-10387. [PMID: 37548283 DOI: 10.1039/d3cc03233g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
A donor-acceptor composed of two 3,6-di-tert-butyl-9H-carbazoles (DTCs) and fused pyrazine (Pyz; 1)-anthraquinone (AQ; 1) was successfully synthesized. The as-fabricated DTCz-Pyz-AQ/graphite foil (GF) electrode in supercapacitor (SC) applications exhibited excellent specific capacitance (Csp) of about 304. 37 F g-1 and 106.0 F g-1 at 0.5 A g-1 current density in three electrode and symmetric two electrode configurations of SC cells, respectively, accompanied by good cycling stability. The highest energy density of the SSC cell was found to be 15.94 W h kg-1 at 899.71 W kg-1 power density. As a proof of concept DTCz-Pyz-AQ/GF (D-A/GF) has great potential in energy storage (ES) applications.
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Affiliation(s)
- Sumit D Ambore
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, Telangana, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India.
| | - Chepuri R K Rao
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, Telangana, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India.
| | - Sidhanath V Bhosale
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, Telangana, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India.
| | - Sheshanath V Bhosale
- Department of Chemistry, School of Chemical Sciences, Central University of Karnataka, Kadaganchi, Kalaburagi-585367, Karnataka, India.
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7
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Kawashiro M, Mori T, Ito M, Ando N, Yamaguchi S. Photodissociative Modules that Control Dual-Emission Properties in Donor-π-Acceptor Organoborane Fluorophores. Angew Chem Int Ed Engl 2023; 62:e202303725. [PMID: 37014627 DOI: 10.1002/anie.202303725] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 04/05/2023]
Abstract
Donor-π-acceptor fluorophores that consist of an electron-donating amino group and an electron-accepting triarylborane moiety generally exhibit substantial solvatochromism in their fluorescence while retaining high fluorescence quantum yields even in polar media. Herein, we report a new family of this compound class, which bears ortho-P(=X)R2 -substituted phenyl groups (X=O or S) as a photodissociative module. The P=X moiety that intramolecularly coordinates to the boron atom undergoes dissociation in the excited state, giving rise to dual emission from the corresponding tetra- and tricoordinate boron species. The susceptibility of the systems to photodissociation depends on the coordination ability of the P=O and P=S moieties, whereby the latter facilitates dissociation. The intensity ratios of the dual emission bands are sensitive to environmental parameters, including temperature, solution polarity, and the viscosity of the medium. Moreover, precise tuning of the P(=X)R2 group and the electron-donating amino moiety led to single-molecule white emission in solution.
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Affiliation(s)
- Midori Kawashiro
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Tatsuya Mori
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Masato Ito
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Naoki Ando
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8601, Japan
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8
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Green synthesis of BOSCHIBAs: Photo- and water stability, cytotoxicity assays, and theoretical calculations. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Evariste S, Harrison AM, Sarkar S, Rheingold AL, Dunietz BD, Heinicke JW, Delgado Rosario E, Yoon S, Teets TS, Protasiewicz JD. Luminescent 1 H-1,3-benzazaphospholes. RSC Adv 2022; 13:594-601. [PMID: 36605673 PMCID: PMC9773327 DOI: 10.1039/d2ra07226b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
2-R-1H-1,3-Benzazaphospholes (R-BAPs) are an interesting class of σ2P heterocycles containing P[double bond, length as m-dash]C bonds. While closely related 2-R-1,3-benzoxaphospholes (R-BOPs) have been shown to be highly photoluminescent materials depending on specific R substituents, photoluminescence of R-BAPs has been previously limited to an example having a fused carbazole ring system. Here we detail the synthesis and structural characterization of a new R-BAP (3c, R = 2,2'-dithiophene), and compare its photoluminescence against two previously reported R-BAPs (3a, R, R' = Me and 3b, R = 2-thiophene). The significant fluorescence displayed by the thiophene derivatives 3b (φ = 0.53) and 3c (φ = 0.12) stands in contrast to the weakly emissive methyl substituted analogue 3a (φ = 0.08). Comparative computational investigations of 3a-c offer insights into the interplay between structure-function relationships affecting excited state relaxation processes.
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Affiliation(s)
- Sloane Evariste
- Department of Chemistry, Case Western Reserve UniversityClevelandOhio 44106USA
| | | | - Sunandan Sarkar
- Department of Chemistry, National Institute of Technology TiruchirappalliTiruchirappalliTamil Nadu 620015India
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of CaliforniaLa JollaSan DiegoCalifornia 92093USA
| | - Barry D. Dunietz
- Department of Chemistry and Biochemistry, Kent State UniversityKentOhio 44242USA
| | - Joachim W. Heinicke
- Institut für Biochemie, Anorganische Chemie, Ernst-Moritz-Arndt-Universität GreifswaldFelix-Hausdorff-Str. 4, D-17489GreisfwaldGermany
| | | | - Sungwoon Yoon
- Department of Chemistry, University of Houston3585 Cullen Blvd. Room 112HoustonTX 77204-5003USA
| | - Thomas S. Teets
- Department of Chemistry, University of Houston3585 Cullen Blvd. Room 112HoustonTX 77204-5003USA
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10
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Jin T, Bolte M, Lerner H, Mewes J, Wagner M. Charge-Transfer Transitions Govern the Reactivity and Photophysics of Vicinally Diphosphanyl-Substituted Diborapentacenes. Chemistry 2022; 28:e202202234. [PMID: 36094675 PMCID: PMC9826252 DOI: 10.1002/chem.202202234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Indexed: 01/11/2023]
Abstract
2,3-Difluoro-5,14-dihydro-5,14-diborapentacene (DBP) was endowed with two vicinal Ph2 P groups by an SN Ar reaction at both CF sites using Ph2 PSiMe3 . Computations reveal the ambipolar product P to undergo P-to-B charge transfer under ambient light irradiation. Consequently, P is prone to photooxidation by air, yielding the Ph2 P(O) species PO. With S8 or [Me3 O][BF4 ], P furnishes the Ph2 P(S) or Ph2 P(Me)+ derivatives PS or [PMe][BF4 ]2 . Along the series P, PO, PS, and [PMe][BF4 ]2 , the redox potentials shift anodically from E1/2 =-1.89 V to -1.02 V (CH2 Cl2 ). Thus, derivatization of the Ph2 P group allows late-stage modulation of the LUMO-energy level of the DBP. Derivatization also influences the emission properties of the compounds, as PO shows green (521 nm) and [PMe][BF4 ]2 red (622 nm) fluorescence in C6 H6 , while P and PS are dark. With CuBr and AgBr, P forms dimeric [M(μ-Br)]2 complexes [PCu]2 and [PAg]2 , which show pronounced metal-to-ligand charge transfer (MLCT), making P a promising ligand for photocatalysts.
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Affiliation(s)
- Tao Jin
- Institut für Anorganische ChemieGoethe-Universität FrankfurtMax-von-Laue-Strasse 760438Frankfurt (Main)Germany
| | - Michael Bolte
- Institut für Anorganische ChemieGoethe-Universität FrankfurtMax-von-Laue-Strasse 760438Frankfurt (Main)Germany
| | - Hans‐Wolfram Lerner
- Institut für Anorganische ChemieGoethe-Universität FrankfurtMax-von-Laue-Strasse 760438Frankfurt (Main)Germany
| | - Jan‐Michael Mewes
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische ChemieUniversität BonnBeringstraße 453115BonnGermany
| | - Matthias Wagner
- Institut für Anorganische ChemieGoethe-Universität FrankfurtMax-von-Laue-Strasse 760438Frankfurt (Main)Germany
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11
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Oshimizu R, Ando N, Yamaguchi S. Olefin–Borane Interactions in Donor–π–Acceptor Fluorophores that Undergo Frustrated‐Lewis‐Pair‐Type Reactions. Angew Chem Int Ed Engl 2022; 61:e202209394. [DOI: 10.1002/anie.202209394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Ryo Oshimizu
- Department of Chemistry Graduate School of Science Research Center of Materials Science (RCMS) Integrated Research Consortium on Chemical Science (IRCCS) Nagoya University Furo Chikusa Nagoya, 464-8602 Japan
| | - Naoki Ando
- Department of Chemistry Graduate School of Science Research Center of Materials Science (RCMS) Integrated Research Consortium on Chemical Science (IRCCS) Nagoya University Furo Chikusa Nagoya, 464-8602 Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry Graduate School of Science Research Center of Materials Science (RCMS) Integrated Research Consortium on Chemical Science (IRCCS) Nagoya University Furo Chikusa Nagoya, 464-8602 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo Chikusa Nagoya, 464-8601 Japan
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12
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Suda K, Yokogawa D. Spin-Orbit Coupling Calculation Combined with the Reference Interaction Site Model Self-Consistent Field Explicitly Including Constrained Spatial Electron Density Distribution. J Chem Theory Comput 2022; 18:6043-6051. [PMID: 36069633 DOI: 10.1021/acs.jctc.2c00580] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studying the radiative and non-radiative decay processes of molecules in a solution is an important issue in the design of organic and functional molecules. Theoretical approaches have great potential for revealing this decay process through computation of various parameters, such as the energy surfaces at the excited state and spin-orbit coupling (SOC). The development of quantum chemical programs has enabled the calculation of SOC values to become popular for the gas phase. However, SOC calculations in solution have some difficulties that need to be overcome. In the present study, the authors combined the SOC calculations with the reference interaction site model self-consistent field explicitly including constrained spatial electron density distribution. To validate the reliability of our method, the decay process of dimethylaminobenzonitrile in cyclohexane and acetonitrile was studied. By computing the SOC values in both solution systems, the authors were able to investigate the decay process at the atomistic level. Furthermore, a natural transition orbital analysis and the measurement of the decomposed SOC values were found to provide a clear understanding of intersystem crossing.
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Affiliation(s)
- Kayo Suda
- Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Daisuke Yokogawa
- Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
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13
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Oshimizu R, Ando N, Yamaguchi S. Olefin–Borane Interactions in Donor–π–Acceptor Fluorophores that Undergo Frustrated‐Lewis‐Pair‐Type Reactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Naoki Ando
- Nagoya Daigaku Graduate School of Science JAPAN
| | - Shigehiro Yamaguchi
- Nagoya University Department of Chemistry Graduate School of Science Furo, Chikusa 464-8602 Nagoya JAPAN
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14
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Sakai M, Mori M, Hirai M, Ando N, Yamaguchi S. Planarized Phenyldithienylboranes: Effects of the Bridging Moieties and π‐Extension on the Photophysical Properties and Lewis Acidity. Chemistry 2022; 28:e202200728. [DOI: 10.1002/chem.202200728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Mika Sakai
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Masayoshi Mori
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Masato Hirai
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo, Chikusa Nagoya 464-8601 Japan
| | - Naoki Ando
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo, Chikusa Nagoya 464-8601 Japan
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15
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Kaiyasuan C, Somjit V, Boekfa B, Packwood D, Chasing P, Sudyoadsuk T, Kongpatpanich K, Promarak V. Intrinsic Hole Mobility in Luminescent Metal–Organic Frameworks and Its Application in Organic Light‐Emitting Diodes. Angew Chem Int Ed Engl 2022; 61:e202117608. [DOI: 10.1002/anie.202117608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Indexed: 11/10/2022]
Affiliation(s)
- Chokchai Kaiyasuan
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Vetiga Somjit
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Bundet Boekfa
- Department of Chemistry, Faculty of Liberal Arts and Science Kasetsart University Kamphaeng Saen Campus Nakhonpathom 73140 Thailand
| | - Daniel Packwood
- Institute for Integrated Cell-Material Science Institute for Advanced Study Kyoto University Kyoto 606-8510 Japan
| | - Pongsakorn Chasing
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Taweesak Sudyoadsuk
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Kanokwan Kongpatpanich
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
- Research Network of NANOTEC-VISTEC on Nanotechnology for Energy Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
| | - Vinich Promarak
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
- Research Network of NANOTEC-VISTEC on Nanotechnology for Energy Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
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16
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Mondal D, Sardar G, Kabra D, Balakrishna MS. 2,2'-Bipyridine derived doubly B ← N fused bisphosphine-chalcogenides, [C 5H 3N(BF 2){NCH 2P(E)Ph 2}] 2 (E = O, S, Se): tuning of structural features and photophysical studies. Dalton Trans 2022; 51:6884-6898. [PMID: 35441638 DOI: 10.1039/d2dt00287f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2,2'-Bipyridine based bisphosphine [C5H3N{N(H)CH2PPh2}]2 (1) and its bischalcogenide derivatives [C5H3N{N(H)CH2P(E)Ph2}]2 (2, E = O; 3, E = S; 4, E = Se) were synthesized, and further reacted with BF3·Et2O/Et3N to form doubly B ← N fused compounds [C5H3N(BF2){NCH2P(E)Ph2}]2 (5, E = O; 6, E = S; 7, E = Se) in excellent yields. The influence of the PE bonds on the electronic properties of the doubly B ← N fused systems and their structural features were investigated in detail, supported by extensive experimental and computational studies. Compound 6 exhibited a very high quantum yield of ϕ = 0.56 in CH2Cl2, whereas compound 7 showed a least quantum yield of ϕ = 0.003 in acetonitrile. Density functional theory (DFT) calculations demonstrated that the LUMO/HOMO of compounds 5-7 mostly delocalized over the entire π-conjugated frameworks. The involvement of PE bonds in the HOMO energy level of these compounds follows the order: PO < PS < PSe. Time-correlated single photon counting (TCSPC) experiments of compounds 5-7 revealed the singlet lifetime of 4.26 ns for 6, followed by 4.03 ns for 5 and a lowest value of 2.18 ns (τ1) and 0.47 ns (τ2) with a double decay profile for 7. Our findings provide important strategies for the design of highly effective B ← N bridged compounds and tuning their photophysical properties by oxidizing phosphorus with different chalcogens. Compounds 5 and 6 have been employed as green emitters (λem = 515 nm) in fluorescent organic light-emitting diodes (OLEDs). For compound 5, doped into the poly(9-vinylcarbazole) (PVK) matrix with 5 wt% doping concentration, nearly 90 Cd m-2 luminance with 0.022% external quantum efficiency (EQE) was achieved. The best performance was observed for compound 6 doped into PVK by 1 wt% having a maximum luminance of 350 Cd m-2 and a similar EQE value.
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Affiliation(s)
- Dipanjan Mondal
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Gopa Sardar
- Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Dinesh Kabra
- Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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17
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Kaiyasuan C, Somjit V, Boekfa B, Packwood D, Chasing P, Sudyoadsuk T, Kongpatpanich K, Promarak V. Intrinsic Hole Mobility in Luminescent Metal–Organic Frameworks and Its Application in Organic Light‐Emitting Diodes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Chokchai Kaiyasuan
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Vetiga Somjit
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Bundet Boekfa
- Department of Chemistry, Faculty of Liberal Arts and Science Kasetsart University Kamphaeng Saen Campus Nakhonpathom 73140 Thailand
| | - Daniel Packwood
- Institute for Integrated Cell-Material Science Institute for Advanced Study Kyoto University Kyoto 606-8510 Japan
| | - Pongsakorn Chasing
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Taweesak Sudyoadsuk
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
| | - Kanokwan Kongpatpanich
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
- Research Network of NANOTEC-VISTEC on Nanotechnology for Energy Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
| | - Vinich Promarak
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Rayong 21210 Thailand
- Research Network of NANOTEC-VISTEC on Nanotechnology for Energy Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
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18
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Berger SM, Marder TB. Applications of triarylborane materials in cell imaging and sensing of bio-relevant molecules such as DNA, RNA, and proteins. MATERIALS HORIZONS 2022; 9:112-120. [PMID: 34842251 DOI: 10.1039/d1mh00696g] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Triarylboranes have been known for more than 100 years and have found potential applications in various fields such as anion sensors and optoelectronics, for example in organic light emitting diodes (OLEDs), field effect transistors (OFETs), and organic photovoltaic devices. However, biological applications, such as bioimaging agents and biomolecule sensors have evolved much more recently. This review summarises progress in this relatively young field and highlights the potential of triarylboranes in biological applications.
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Affiliation(s)
- Sarina M Berger
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Todd B Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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19
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Tao J, Bolte M, Lerner HW, Wagner M. Nucleophilic aromatic substitution approach to phosphanyl-substituted diboraanthracenes: biphilic compounds with tunable electron affinities. Org Chem Front 2022. [DOI: 10.1039/d2qo01199a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
9,10-Dimesityl-9,10-dihydro-9,10-diboraanthracenes (Mes2DBAs) bearing one (1), two (2), or four (3) Ph2P-substituents were prepared from Ph2PSiMe3 and tetrafluorinated Mes2DBAs via a nucleophilic aromatic substitution protocol. Using compound 1 as the model...
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20
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Narita H, Choi H, Ito M, Ando N, Ogi S, Yamaguchi S. Fully fused boron-doped polycyclic aromatic hydrocarbons: their synthesis, structure–property relationships, and self-assembly behavior in aqueous media. Chem Sci 2022; 13:1484-1491. [PMID: 35222933 PMCID: PMC8809413 DOI: 10.1039/d1sc06710a] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/06/2022] [Indexed: 12/16/2022] Open
Abstract
Planarized triarylboranes are attracting increasing attention not only as models of boron-doped graphenes, but also as promising materials for organic optoelectronics. In particular, polycyclic aromatic hydrocarbon (PAH) skeletons with embedded boron atom(s) in the inner positions are of importance in light of their high chemical stability and π-stacking ability derived from their planar geometries. Herein, we disclose a robust synthesis of such fully fused boron-doped PAHs and their self-assembly behavior in aqueous media to explore their potential utility in biological applications. The synthesis using in situ-generated planar diarylboranes as a key precursor afforded a series of fully fused boron-doped PAHs, even including an amphiphilic derivative with hydrophilic side chains. These compounds exhibited red emission in solution, and slight structural modification resulted in increased fluorescence brightness. While these compounds showed relatively low Lewis acidity compared to their partially ring-fused counterparts, their Lewis acidities were slightly increased in polar solvents compared to those in nonpolar solvents. In addition, their B–N Lewis acid–base adducts, even those with a strong, charge-neutral Lewis base such as N,N-dimethylaminopyridine (DMAP), exhibited photo-dissociation behavior in the excited state. The amphiphilic derivative showed significant spectral changes with increased water content in DMSO/H2O mixed media and formed sheet-like aggregates. The disassembly and assembly processes of the aggregates were externally controlled by the addition of DMAP and an acid, accompanied by a change in the fluorescence intensity. A series of fully fused boron-doped polycyclic aromatic hydrocarbons is synthesized. Self-assembly of an amphiphilic derivative can be controlled by addition of a Lewis base or an acid in aqueous media.![]()
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Affiliation(s)
- Hiroki Narita
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Heekyoung Choi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
| | - Masato Ito
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Naoki Ando
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Soichiro Ogi
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
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21
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Zhu C, Li C, Wen L, Song Q, Wang K, Lv C, Zhang Y. Piezochromism of cyanostilbene derivatives: a small structural alteration makes a big photophysical difference. NEW J CHEM 2021. [DOI: 10.1039/d1nj01945g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We designed two HLCT-active luminophores with high PLYQs. Under high pressure, DPMO presents better sensitivity and a smaller PL wavelength redshift than TPPA due to the high PLYQs and the strong CT state.
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Affiliation(s)
- Chenfei Zhu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- People's Republic of China
| | - Chengjian Li
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- People's Republic of China
| | - Li Wen
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- People's Republic of China
| | - Qingbao Song
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- People's Republic of China
| | - Kai Wang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Chunyan Lv
- Department of Materials Chemistry
- Huzhou University
- Huzhou
- People's Republic of China
| | - Yujiang Zhang
- Department of Materials Chemistry
- Huzhou University
- Huzhou
- People's Republic of China
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