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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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2
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Maier M, Chorbacher J, Hellinger A, Klopf J, Günther J, Helten H. Poly(arylene iminoborane)s, Analogues of Poly(arylene vinylene) with a BN-Doped Backbone: A Comprehensive Study. Chemistry 2023:e202302767. [PMID: 37724629 DOI: 10.1002/chem.202302767] [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: 08/23/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 09/21/2023]
Abstract
Despite the great success of the concept of doping organic compounds with BN units to access new materials with tailored properties, its use in polymer chemistry has only been realized quite recently. Herein, we present a comprehensive study of oligo- and poly(arylene iminoborane)s comprising a backbone of phenylene or thiophene moieties, as well as combinations thereof, linked via B=N units. The novel polymers can be regarded as BN analogues of poly(p-phenylene vinylene) (PPV) or poly(thiophene vinylene) (PTV) or their copolymers. Our modular synthetic approach allowed us to prepare four polymers and 12 monodisperse oligomers with modulated electronic properties. Alternating electron-releasing diaminoarylene and electron-accepting diborylarylene building blocks gave rise to a pronounced donor-acceptor character. Effective π-conjugation over the arylene iminoborane backbone is evidenced by systematic bathochromic shifts of the low-energy UV-vis absorption maximum with increasing chain length, which is furthermore supported by crystallographic and computational investigations. Furthermore, all compounds investigated show emission of visible light in the solid state and aggregation-induced emission (AIE) behavior, due to the presence of partially flexible linear B=N linkages in the backbone.
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Affiliation(s)
- Matthias Maier
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Johannes Chorbacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Anna Hellinger
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Jonas Klopf
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Julian Günther
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Holger Helten
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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3
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Kalluvettukuzhy NK, Sudhakar P, Eyyathiyil J, Hara N, Imai Y, Thilagar P. Chiral B-N AIEgens: Intense Blue Circularly Polarized Luminescence and Piezochromism. Org Lett 2023; 25:6067-6071. [PMID: 37540142 DOI: 10.1021/acs.orglett.3c02322] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
We present a new class of blue circularly polarized luminescent emitters based on tetraarylaminoborane (TAAB) with considerable dissymmetry factor in the solid state. The chiral pendant 1-phenylethylamine in BN-RR and BN-SS imparts chirality to the core chromophore, resulting in circularly polarized luminescence signals (glum = 0.8 × 10-3) with a quantum yield of 33% in the crystalline state. This novel set of compounds also showcases intriguing thermally reversible piezochromism.
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Affiliation(s)
- Neena K Kalluvettukuzhy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Pagidi Sudhakar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Jusaina Eyyathiyil
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Nobuyuki Hara
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Kowakae, Higashi-Osaka, Osaka 560012, Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Kowakae, Higashi-Osaka, Osaka 560012, Japan
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
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Nandi RP, Kalluvettukuzhy NK, Pagidi S, Thilagar P. Molecular Persistent Room-Temperature Phosphorescence from Tetraarylaminoboranes. Inorg Chem 2023; 62:1122-1134. [PMID: 36630685 DOI: 10.1021/acs.inorgchem.2c03386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Herein, we report the synthesis, molecular structure, and optical features of tetrarylaminoboranes 1 (Mes2B-N(Ph)(C10H7)) and 2 (Mes2B-N(Ph)(C14H9)). In the solution state, 1 shows aggregation-induced emission enhancement and color switching, while 2 displays emission color switching and aggregation-caused quenching. At 77 K, frozen solutions of 1 show delayed fluorescence (DF) and phosphorescence, whereas 2 display only DF. Pristine solids of 1 and 2 showed delayed fluorescence under ambient conditions; however, crystals of both compounds show no phosphorescence under similar conditions. Polymethyl methacrylate thin films of 1 (1 wt % doping concentration) exhibit persistent room-temperature phosphorescence (pRTP) lasting for ∼0.5 s. In contrast, 2 does not show phosphorescence under similar conditions. Systematic photophysical studies and theoretical (DFT and TD-DFT) calculations are performed on these molecules to rationalize their intriguing optical characteristics.
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Affiliation(s)
- Rajendra Prasad Nandi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Neena K Kalluvettukuzhy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Sudhakar Pagidi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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Barot YB, Anand V, Mishra R. AIE-active phenothiazine based Schiff-base for the selective sensing of the explosive picric acid in real water samples and paper-based device. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Shi Y, Zeng Y, Kucheryavy P, Yin X, Zhang K, Meng G, Chen J, Zhu Q, Wang N, Zheng X, Jäkle F, Chen P. Dynamic B/N Lewis Pairs: Insights into the Structural Variations and Photochromism via Light-Induced Fluorescence to Phosphorescence Switching. Angew Chem Int Ed Engl 2022; 61:e202213615. [PMID: 36287039 DOI: 10.1002/anie.202213615] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Indexed: 11/18/2022]
Abstract
Ultralong afterglow emissions due to room-temperature phosphorescence (RTP) are of paramount importance in the advancement of smart sensors, bioimaging and light-emitting devices. We herein present an efficient approach to achieve rarely accessible phosphorescence of heavy atom-free organoboranes via photochemical switching of sterically tunable fluorescent Lewis pairs (LPs). LPs are widely applied in and well-known for their outstanding performance in catalysis and supramolecular soft materials but have not thus far been exploited to develop photo-responsive RTP materials. The intramolecular LP M1BNM not only shows a dynamic response to thermal treatment due to reversible N→B coordination but crystals of M1BNM also undergo rapid photochromic switching. As a result, unusual emission switching from short-lived fluorescence to long-lived phosphorescence (rad-M1BNM, τRTP =232 ms) is observed. The reported discoveries in the field of Lewis pairs chemistry offer important insights into their structural dynamics, while also pointing to new opportunities for photoactive materials with implications for fast responsive detectors.
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Affiliation(s)
- Yafei Shi
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Yi Zeng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Pavel Kucheryavy
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, NJ 07102, USA
| | - Xiaodong Yin
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Kai Zhang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Guoyun Meng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Jinfa Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Qian Zhu
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Xiaoyan Zheng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, NJ 07102, USA
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing, 102488, China
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7
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Braddock AA, Lee GE, Theodorakis EA, Romero EA. Interrogating Redox and Lewis Base Activations of Aminoboranes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Alexander A. Braddock
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0309, United States
| | - Grace E. Lee
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0309, United States
| | - Emmanuel A. Theodorakis
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0309, United States
| | - Erik A. Romero
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0309, United States
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8
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P CAS, Raveendran AV, Sivakrishna N, Nandi RP. Triarylborane-triphenylamine based luminophore for the mitochondria targeted live cell imaging and colorimetric detection of aqueous fluoride. Dalton Trans 2022; 51:15339-15353. [PMID: 36135598 DOI: 10.1039/d2dt01887j] [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
Bioimaging of subcellular organelles such as mitochondria is crucial for detecting physiological abnormalities induced by fluctuations in the levels of various analytes. Herein, we report the design and synthesis of two novel water-soluble cationic Lewis acid triarylborane-triarylamine conjugates 1 and 2. The optical characteristics of 1 and 2 and their precursor compounds BTPA-NMe2 and BTPA-2NMe2 were evaluated, which show similar absorption and fluorescence spectra, with 1 and 2 exhibiting higher quantum yields of 0.73 and 0.64, respectively, than those of the precursors BTPA-NMe2 and BTPA-2NMe2, indicating the partial disruption of the ICT process and the activation of alternative emission bands in 1 and 2. The live cell imaging ability of compound 2 was examined in HeLa cells using a confocal microscope. Moreover, mitochondrial internalisation using compound 2 was effective and it was found to have high photostability under UV light conditions. Furthermore, compound 2 demonstrated an evident colorimetric response with a colour change to dark yellow in aqueous environments, indicating that it could be used for anion sensing. The spectral changes were observed in UV-visible and fluorescence titration experiments, which were strongly supported by DFT calculations. In short, compound 2 synthesized by us can be exclusively utilized for the selective localization of mitochondria with less cytotoxicity and shows excellent colorimetric response to aqueous inorganic fluoride at levels as low as 0.1 ppm with high selectivity.
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Affiliation(s)
- Chinna Ayya Swamy P
- Main group Organometallics Materials, Supramolecular Chemistry and Catalysis lab, Department of Chemistry, National Institute of Technology, Calicut, India-673601.
| | - Archana V Raveendran
- Main group Organometallics Materials, Supramolecular Chemistry and Catalysis lab, Department of Chemistry, National Institute of Technology, Calicut, India-673601.
| | - Narra Sivakrishna
- Humanities & Sciences, Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology, Hyderabad, India-500090
| | - Rajendra Prasad Nandi
- Inorganic and Physical Chemistry Department, Indian Institute of Science, Bangalore-560 012, India
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9
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Yoshino J, Kawaguchi S, Takata S, Hayashi N. Triarylboranes Bearing a Benzimidazole or Quinoline Ring Attached to the Boron Atom: Synthesis, π-Conjugation, and Fluorescence. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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10
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Zeng Y, Yang J, Zheng X. Aggregation effects on photophysical properties of NBN-doped polycyclic aromatic hydrocarbons: a theoretical study. Phys Chem Chem Phys 2021; 23:23986-23997. [PMID: 34664048 DOI: 10.1039/d1cp03726a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
To realize the precise manipulation of the optoelectrical properties of boron-nitrogen (B-N) unit-doped polycyclic aromatic hydrocarbons (PAHs), unraveling the structure-property relationship behind them is of vital importance. In this work, we take two representative NBN-doped PAHs with similar structures (NBN-5 and NBN-6) as examples and explore the influence of molecular packing on their photophysical properties in different environments (including dilute solution, amorphous aggregate and crystal) using a theoretical protocol that combines molecular dynamics (MD) simulations and thermal vibration correlation function coupled quantum mechanics/molecular mechanics (QM/MM) calculations. We found that the different symmetries of the transition orbitals in NBN-5 and NBN-6 lead to their distinct distributions of transition orbitals, with NBN-5 delocalizing on the whole backbone and NBN-6 bearing clear intramolecular charge transfer. Therefore, the S1 state of NBN-6 demonstrates redshifted emission spectra in contrast to those of NBN-5. We confirmed that NBN-6 in dilute solution is more flexible than NBN-6 in aggregated states. After aggregation, the fluorescent quantum efficiency (FQE) of NBN-6 increases significantly with the nonradiative decay constants decreasing by 2-4 orders of magnitude, because the dense molecular packing in the aggregated state could effectively suppress the out-of-plane rotation and distortion of the phenyl-ring at the boron position, indicating its AIE feature. While the photophysical properties of conjugated NBN-5 with high rigidity are independent of the environment, showing bright emission in both solution and solid states, consistent with the experimental results. Our theoretical protocol is general and applicable to other doped PAHs, thus laying a solid foundation for the rational design of advanced materials.
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Affiliation(s)
- Yi Zeng
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key laboratory of Photoelectronic/Electro-photonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
| | - Junfang Yang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key laboratory of Photoelectronic/Electro-photonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
| | - Xiaoyan Zheng
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key laboratory of Photoelectronic/Electro-photonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China. .,Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates (South China University of Technology), Guangzhou 510640, China
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11
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Pandey UP, Nandi RP, Thilagar P. Design, Synthesis, and Temperature-Driven Molecular Conformation-Dependent Delayed Fluorescence Characteristics of Dianthrylboron-Based Donor-Acceptor Systems. Front Chem 2020; 8:541331. [PMID: 33195044 PMCID: PMC7581868 DOI: 10.3389/fchem.2020.541331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 08/27/2020] [Indexed: 11/13/2022] Open
Abstract
We report a simple and novel molecular design strategy to enhance rISC in boron-based donor-acceptor systems to achieve improved delayed fluorescence characteristics. Dianthrylboryl ((An)2B)-based aryl aminoboranes 1 (donor: phenothiazine) and 2 (donor: N,N-diphenylamine) were synthesized by a simple one-pot procedure. The energy of the electronic excited states in 1 and 2 were modulated by varying the arylamine donor strength and electronic coupling between D and A moieties. The presence of a large π-system (anthryl moiety) on boron enhances the electronic communication between donor arylamine and acceptor boryl moieties, and hence, both 1 and 2 exhibit delayed fluorescence characteristics in a broad range of temperatures (80-300 K). Single crystal X-ray analysis and temperature-dependent photophysical studies together with theoretical studies were carried out to rationalize the observed intriguing optical signatures of 1 and 2.
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Affiliation(s)
- Umesh Pratap Pandey
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India
| | - Rajendra Prasad Nandi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India
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12
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Kalluvettukuzhy NK, Pagidi S, Prasad Nandi R, Thilagar P. Exploiting N−H–π Interactions in 2‐(Dimesitylboraneyl)‐1H‐pyrrole for Luminescence Enhancement. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Neena K Kalluvettukuzhy
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Sudhakar Pagidi
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Rajendra Prasad Nandi
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Pakkirisamy Thilagar
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
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13
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Sarkar TK, Sarkar SK, Thilagar P. Room Temperature Phosphorescent (RTP) N‐Acetylphenothiazines. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.201900296] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Tanmay Kumar Sarkar
- Department of Inorganic and Physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Samir Kumar Sarkar
- Department of Inorganic and Physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical ChemistryIndian Institute of Science Bangalore 560012 India
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14
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Sathiyaraj M, Pavithra K, Thiagarajan V. Azine based AIEgens with multi-stimuli response towards picric acid. NEW J CHEM 2020. [DOI: 10.1039/d0nj01324b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Selective detection of picric acid using AIEgens via fluorescence enhancement and quenching in the monomer and aggregated from respectively.
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15
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Mukherjee S, Thilagar P. Renaissance of Organic Triboluminescent Materials. Angew Chem Int Ed Engl 2019; 58:7922-7932. [DOI: 10.1002/anie.201811542] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Sanjoy Mukherjee
- Mitsubishi Chemicals Center for Advanced Materials University of California Santa Barbara CA 93106 USA
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
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16
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Affiliation(s)
- Sanjoy Mukherjee
- Mitsubishi Chemicals Center for Advanced Materials University of California Santa Barbara CA 93106 USA
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
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17
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Laperriere LE, Yruegas S, Martin CD. Investigating the reactivity of 9-phenyl-9-borafluorene with N H, O H, P H, and S H bonds. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Abstract
Representative types of boron-based molecular systems that respond to external stimuli such as temperature, pressure, light, or chemicals (oxygen, acid, base etc.) are described in this review article. The boron molecules are classified according to their operating mechanisms, with emphasis on systems, which are based on switchable boron-donor bonds and switchable excited states.
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Affiliation(s)
- Soren K. Mellerup
- Department of Chemistry
- Queen's University
- Kingston
- Canada
- Institut für Anorganische Chemie
| | - Suning Wang
- Department of Chemistry
- Queen's University
- Kingston
- Canada
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
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19
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Sudhakar P, Neena KK, Thilagar P. Borylated perylenediimide: self-assembly, photophysics and sensing application. Dalton Trans 2019; 48:7218-7226. [DOI: 10.1039/c8dt04005b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A red emissive perylenediimide-triarylboron conjugate (PDI-TAB) with interesting 1D self-assembled nanowires, concentration dependent emission colors and potential fluoride ion sensing is reported.
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Affiliation(s)
- Pagidi Sudhakar
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore
- India
| | | | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore
- India
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20
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Neena KK, Sudhakar P, Thilagar P. Catalyst- and Template-Free Ultrafast Visible-Light-Triggered Dimerization of Vinylpyridine-Functionalized Tetraarylaminoborane: Intriguing Deep-Blue Delayed Fluorescence. Angew Chem Int Ed Engl 2018; 57:16806-16810. [PMID: 30345594 DOI: 10.1002/anie.201811353] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Indexed: 11/07/2022]
Abstract
A photoredox-catalyst- and template-free sunlight-induced molecular dimerization of a vinylpyridine-functionalized tetraarylaminoborane (TAAB) has been accomplished for the first time. The reaction is quantitative, highly regioselective, and thermally irreversible. The presence of the propeller-shaped TAAB framework allows selective photodimerization of one of the two vinyl pyridine units. Monomer 1 and photodimer 2 exhibit distinct photophysical properties with delayed fluorescence (DF) both in solution and the solid state, which was confirmed by steady-state and time-resolved luminescence studies. Quantum mechanical calculations were performed to support the experimental observations. Our new approach using [2+2] cycloaddition chemistry paves the way for the development of highly sought-after deep-blue DF materials.
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Affiliation(s)
- Kalluvettukuzhy K Neena
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Pagidi Sudhakar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
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Neena KK, Sudhakar P, Thilagar P. Catalyst‐ and Template‐Free Ultrafast Visible‐Light‐Triggered Dimerization of Vinylpyridine‐Functionalized Tetraarylaminoborane: Intriguing Deep‐Blue Delayed Fluorescence. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811353] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kalluvettukuzhy K. Neena
- Department of Inorganic and Physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Pagidi Sudhakar
- Department of Inorganic and Physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical ChemistryIndian Institute of Science Bangalore 560012 India
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22
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Bakir M. X-ray crystallographic, spectroscopic and electrochemical properties of a bi-stable di-2-thienyl ketone 2,4-dinitrophenyl hydrazone (dtkdnph). J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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23
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Jia XR, Yu HJ, Chen J, Gao WJ, Fang JK, Qin YS, Hu XK, Shao G. Stimuli-Responsive Properties of Aggregation-Induced-Emission Compounds Containing a 9,10-Distyrylanthracene Moiety. Chemistry 2018; 24:19053-19059. [DOI: 10.1002/chem.201804315] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Xiang-Rui Jia
- School of Chemistry; Sun Yat-sen University; Guangzhou 510275 P. R. China
| | - Hui-Juan Yu
- School of Chemistry; Sun Yat-sen University; Guangzhou 510275 P. R. China
- Shenzhen Research Institute; Sun Yat-sen University; Shenzhen 518057 P. R. China
| | - Jian Chen
- School of Chemistry; Sun Yat-sen University; Guangzhou 510275 P. R. China
- Shenzhen Research Institute; Sun Yat-sen University; Shenzhen 518057 P. R. China
| | - Wei-Jie Gao
- School of Chemistry; Sun Yat-sen University; Guangzhou 510275 P. R. China
- Shenzhen Research Institute; Sun Yat-sen University; Shenzhen 518057 P. R. China
| | - Jing-Kun Fang
- School of Chemical Engineering; Nanjing University of Science and Technology; Nanjing 210094 P. R. China
| | - Yuan-Shou Qin
- Zeloq (Shenzhen) Technology Co. Ltd.; Shenzhen 518104 P. R. China
| | - Xiao-Kai Hu
- Institute of Frontier Materials; Deakin University; Geelong 3216 Australia
| | - Guang Shao
- School of Chemistry; Sun Yat-sen University; Guangzhou 510275 P. R. China
- Shenzhen Research Institute; Sun Yat-sen University; Shenzhen 518057 P. R. China
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Pagidi S, Kalluvettukuzhy NK, Thilagar P. Tunable Self-Assembly and Aggregation-Induced Emission Characteristics of Triarylboron-Decorated Naphthalimides. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00166] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sudhakar Pagidi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Neena K. Kalluvettukuzhy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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Triarylborane-Based Materials for OLED Applications. Molecules 2017; 22:molecules22091522. [PMID: 28902157 PMCID: PMC6151606 DOI: 10.3390/molecules22091522] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 08/30/2017] [Indexed: 11/17/2022] Open
Abstract
Multidisciplinary research on organic fluorescent molecules has been attracting great interest owing to their potential applications in biomedical and material sciences. In recent years, electron deficient systems have been increasingly incorporated into fluorescent materials. Triarylboranes with the empty p orbital of their boron centres are electron deficient and can be used as strong electron acceptors in conjugated organic fluorescent materials. Moreover, their applications in optoelectronic devices, energy harvesting materials and anion sensing, due to their natural Lewis acidity and remarkable solid-state fluorescence properties, have also been investigated. Furthermore, fluorescent triarylborane-based materials have been commonly utilized as emitters and electron transporters in organic light emitting diode (OLED) applications. In this review, triarylborane-based small molecules and polymers will be surveyed, covering their structure-property relationships, intramolecular charge transfer properties and solid-state fluorescence quantum yields as functional emissive materials in OLEDs. Also, the importance of the boron atom in triarylborane compounds is emphasized to address the key issues of both fluorescent emitters and their host materials for the construction of high-performance OLEDs.
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