1
|
Boyet M, Chabaud L, Pucheault M. Recent Advances in the Synthesis of Borinic Acid Derivatives. Molecules 2023; 28:molecules28062660. [PMID: 36985634 PMCID: PMC10057197 DOI: 10.3390/molecules28062660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Borinic acids [R2B(OH)] and their chelate derivatives are a subclass of organoborane compounds used in cross-coupling reactions, catalysis, medicinal chemistry, polymer or optoelectronics materials. In this paper, we review the recent advances in the synthesis of diarylborinic acids and their four-coordinated analogs. The main strategies to build up borinic acids rely either on the addition of organometallic reagents to boranes (B(OR)3, BX3, aminoborane, arylboronic esters) or the reaction of triarylboranes with a ligand (diol, amino alcohol, etc.). After general practical considerations of borinic acids, an overview of the main synthetic methods, their scope and limitations is provided. We also discuss some mechanistic aspects.
Collapse
|
2
|
Stoerkler T, Pariat T, Laurent AD, Jacquemin D, Ulrich G, Massue J. Excited-State Intramolecular Proton Transfer Dyes with Dual-State Emission Properties: Concept, Examples and Applications. Molecules 2022; 27:molecules27082443. [PMID: 35458640 PMCID: PMC9024454 DOI: 10.3390/molecules27082443] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/08/2022] [Accepted: 04/08/2022] [Indexed: 11/30/2022] Open
Abstract
Dual-state emissive (DSE) fluorophores are organic dyes displaying fluorescence emission both in dilute and concentrated solution and in the solid-state, as amorphous, single crystal, polycrystalline samples or thin films. This comes in contrast to the vast majority of organic fluorescent dyes which typically show intense fluorescence in solution but are quenched in concentrated media and in the solid-state owing to π-stacking interactions; a well-known phenomenon called aggregation-caused quenching (ACQ). On the contrary, molecular rotors with a significant number of free rotations have been engineered to show quenched emission in solution but strong fluorescence in the aggregated-state thanks to restriction of the intramolecular motions. This is the concept of aggregation-induced emission (AIE). DSE fluorophores have been far less explored despite the fact that they are at the crossroad of ACQ and AIE phenomena and allow targeting applications both in solution (bio-conjugation, sensing, imaging) and solid-state (organic electronics, data encryption, lasing, luminescent displays). Excited-State Intramolecular Proton Transfer (ESIPT) fluorescence is particularly suitable to engineer DSE dyes. Indeed, ESIPT fluorescence, which relies on a phototautomerism between normal and tautomeric species, is characterized by a strong emission in the solid-state along with a large Stokes’ shift, an enhanced photostability and a strong sensitivity to the close environment, a feature prone to be used in bio-sensing. A drawback that needs to be overcome is their weak emission intensity in solution, owing to detrimental molecular motions in the excited-state. Several strategies have been proposed in that regard. In the past few years, a growing number of examples of DSE-ESIPT dyes have indeed emerged in the literature, enriching the database of such attractive dyes. This review aims at a brief but concise overview on the exploitation of ESIPT luminescence for the optimization of DSE dyes properties. In that perspective, a synergistic approach between organic synthesis, fluorescence spectroscopy and ab initio calculations has proven to be an efficient tool for the construction and optimization of DSE-ESIPT fluorophores.
Collapse
Affiliation(s)
- Timothée Stoerkler
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), Equipe Chimie Organique pour la Biologie, les Matériaux et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), Université de Strasbourg, 25 Rue Becquerel, CEDEX 02, 67087 Strasbourg, France; (T.S.); (T.P.); (G.U.)
| | - Thibault Pariat
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), Equipe Chimie Organique pour la Biologie, les Matériaux et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), Université de Strasbourg, 25 Rue Becquerel, CEDEX 02, 67087 Strasbourg, France; (T.S.); (T.P.); (G.U.)
| | - Adèle D. Laurent
- Chimie et Interdisciplinarités: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Nantes University, 44322 Nantes, France;
| | - Denis Jacquemin
- Chimie et Interdisciplinarités: Synthèse, Analyse et Modélisation (CEISAM), UMR CNRS 6230, Nantes University, 44322 Nantes, France;
- Correspondence: (D.J.); (J.M.)
| | - Gilles Ulrich
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), Equipe Chimie Organique pour la Biologie, les Matériaux et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), Université de Strasbourg, 25 Rue Becquerel, CEDEX 02, 67087 Strasbourg, France; (T.S.); (T.P.); (G.U.)
| | - Julien Massue
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), Equipe Chimie Organique pour la Biologie, les Matériaux et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), Université de Strasbourg, 25 Rue Becquerel, CEDEX 02, 67087 Strasbourg, France; (T.S.); (T.P.); (G.U.)
- Correspondence: (D.J.); (J.M.)
| |
Collapse
|
3
|
Algoazy N, Knight JG, Waddell PG, Aerts R, Herrebout W, Al-Sharif HHT, Karlsson JKG, Harriman A. Synthesis, Structure and Photophysical Properties of a New Class of Inherently Chiral Boron(III) Chelates-The tert-Leucine Complexes. Chemistry 2021; 27:5246-5258. [PMID: 33370464 DOI: 10.1002/chem.202005246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/24/2020] [Indexed: 11/07/2022]
Abstract
A new family of boron(III) chelates is introduced whereby molecular chirality, confirmed by circular dichroism, is imported during synthesis such that isolation of the diastereoisomers does not require separation procedures. The photophysical properties of two members of the family have been examined: the N,O,O-salicylaldehyde-based derivative shows pronounced intramolecular charge-transfer character in fluid solution and is weakly fluorescent, with a large Stokes shift. The corresponding 2-methylamino-benzaldehyde-derived N,N,O-chelate absorbs and fluoresces in the visible region with a much smaller Stokes shift. Orange fluorescence is also observed for this compound as a cast film. Temperature-dependence studies show that decay of the fluorescent state is weakly activated but emission is less than quantitative at 77 K. Quite rare for boron(III)-based chelates, this derivative undergoes intersystem crossing to form a meta-stable triplet-excited state. X-ray crystal structures are reported for both compounds, along with simulated ECD spectra.
Collapse
Affiliation(s)
- Nawaf Algoazy
- School of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Julian G Knight
- School of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Paul G Waddell
- Crystallography Laboratory, School of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Roy Aerts
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Wouter Herrebout
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Hatun H T Al-Sharif
- Molecular Photonics Laboratory, School of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Joshua K G Karlsson
- Molecular Photonics Laboratory, School of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Anthony Harriman
- Molecular Photonics Laboratory, School of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| |
Collapse
|
4
|
Polarization effect in luminescent mesogenic BF2 complexes derived from heterocyclic benzothiazoles. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
5
|
Chinta RVRN, Aradhyula BPR, Murali AC, Venkatasubbaiah K. Synthesis, photophysical and electrochemical properties of naphthaldimine based boron complexes. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
6
|
Hao J, Yang Y. Dynamic Excited-State Intramolecular Proton Transfer Mechanisms of Two Novel 3-Hydroxyflavone-Based Chromophores in Two Different Surroundings. J Phys Chem A 2019; 123:3937-3948. [DOI: 10.1021/acs.jpca.9b00879] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jiaojiao Hao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yang Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| |
Collapse
|
7
|
Felouat A, Curtil M, Massue J, Ulrich G. Excited-state intramolecular proton transfer (ESIPT) emitters based on a 2-(2′-hydroxybenzofuranyl)benzoxazole (HBBO) scaffold functionalised with oligo(ethylene glycol) (OEG) chains. NEW J CHEM 2019. [DOI: 10.1039/c9nj00809h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article describes the multi-step synthesis of 2-(2′-hydroxybenzofuran)benzoxazole (HBBO) derivatives functionalised with one to three oligo(ethylene glycol) (OEG) chains with the goal to allow a good vectorization in aqueous media.
Collapse
Affiliation(s)
- Abdellah Felouat
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM)
- 67087 Strasbourg Cedex 02
- France
| | - Mathieu Curtil
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM)
- 67087 Strasbourg Cedex 02
- France
| | - Julien Massue
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM)
- 67087 Strasbourg Cedex 02
- France
| | - Gilles Ulrich
- Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM)
- 67087 Strasbourg Cedex 02
- France
| |
Collapse
|
8
|
Vinayakumara DR, Swamynathan K, Kumar S, Adhikari AV. Columnar self-assembly of novel benzylidenehydrazones and their difluoroboron complexes: structure–property correlations. NEW J CHEM 2019. [DOI: 10.1039/c9nj01192g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of prospective columnar liquid crystalline materials derived from novel organoboron complexes has been developed by virtue of their application in organic electronic devices.
Collapse
Affiliation(s)
- D. R. Vinayakumara
- Organic Materials Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka
- Mangalore-575 025
- India
| | | | - Sandeep Kumar
- SCM Group
- Raman Research Institute
- Bangalore-560 080
- India
| | - Airody Vasudeva Adhikari
- Organic Materials Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka
- Mangalore-575 025
- India
| |
Collapse
|
9
|
Munch M, Curtil M, Vérité PM, Jacquemin D, Massue J, Ulrich G. Ethynyl-Tolyl Extended 2-(2′-Hydroxyphenyl)benzoxazole Dyes: Solution and Solid-state Excited-State Intramolecular Proton Transfer (ESIPT) Emitters. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801590] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Maxime Munch
- UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); Institut de Chimie et Procédés pour l′Energie, l′Environnement et la Santé (ICPEES); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Mathieu Curtil
- UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); Institut de Chimie et Procédés pour l′Energie, l′Environnement et la Santé (ICPEES); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Pauline M. Vérité
- CEISAM, UMR CNRS 6230, BP 92208; 2 rue de la Houssinière 44322 Nantes, Cedex 03 France
| | - Denis Jacquemin
- CEISAM, UMR CNRS 6230, BP 92208; 2 rue de la Houssinière 44322 Nantes, Cedex 03 France
| | - Julien Massue
- UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); Institut de Chimie et Procédés pour l′Energie, l′Environnement et la Santé (ICPEES); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Gilles Ulrich
- UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); Institut de Chimie et Procédés pour l′Energie, l′Environnement et la Santé (ICPEES); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| |
Collapse
|
10
|
Segovia-Pérez R, Alvarado-Rodríguez JG, Rojas-Lima S, López-Ruiz H, Andrade-López N, Jancik V, Cruz-Borbolla J, Martínez-Otero D. Coordination diversity in tin compounds with bis(benzoxazole)phenol as a polydentate ligand: Synthesis and crystal structure studies. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1528498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Raúl Segovia-Pérez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México
| | - José G. Alvarado-Rodríguez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México
| | - Susana Rojas-Lima
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México
| | - Heraclio López-Ruiz
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México
| | - Noemí Andrade-López
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México
| | - Vojtech Jancik
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Toluca, Edo. de México, México
| | - Julián Cruz-Borbolla
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México
| | - Diego Martínez-Otero
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Toluca, Edo. de México, México
| |
Collapse
|
11
|
Hao J, Yang Y. The theoretical study about the ESIPT mechanism for 2,4-bis(benzooxazol-2′-yl)hydroquinone: Single or double? J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3903] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jiaojiao Hao
- State Key Laboratory of Molecular Reaction Dynamics; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian China
| | - Yang Yang
- State Key Laboratory of Molecular Reaction Dynamics; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian China
| |
Collapse
|
12
|
Lei ZY, Lee GH, Lai CK. Luminescent mesogenic borondifluoride complexes with the Schiff bases containing salicylideneamines and β-enaminoketones core systems. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.03.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
13
|
Jarzembska KN, Kamiński R, Durka K, Woźniak K. Ground-State Charge-Density Distribution in a Crystal of the Luminescent ortho-Phenylenediboronic Acid Complex with 8-Hydroxyquinoline. J Phys Chem A 2018; 122:4508-4520. [PMID: 29672046 DOI: 10.1021/acs.jpca.8b00832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This contribution is devoted to the first electron density studies of a luminescent oxyquinolinato boron complex in the solid state. ortho-Phenylenediboronic acid mixed with 8-hydroxyquinoline in dioxane forms high-quality single crystals via slow solvent evaporation, which allows successful high resolution data collection (sin θ/λ = 1.2 Å-1) and charge density distribution modeling. Particular attention has been paid to the boron-oxygen fragment connecting the two parts of the complex, and to the solvent species exhibiting anharmonic thermal motion. The experiment and theory compared rather well in terms of atomic charges and volumes, except for the boron centers. Boron atoms, as expected, constitute the most electron-deficient species in the complex molecule, whereas the neighboring oxygen and carbon atoms are the most significantly negatively charged ones. This part of the molecule appears to be very much involved in the charge transfer occurring between the acid fragment and oxyquinoline moiety leading to the observed fluorescence, as supported by the time-dependent density functional theory (TDDFT) results and the generated transition density maps. TDDFT calculations indicated that p-type atomic orbitals contributing to the HOMO-1, HOMO, and LUMO play the major role in the lowest energy transitions, and enabled further comparison with the charge density features, which is discussed in details. Furthermore, the results confirmed the known fact the Q ligand character is most important for the spectroscopic properties of this class of complexes.
Collapse
Affiliation(s)
- Katarzyna N Jarzembska
- Department of Chemistry , University of Warsaw , Żwirki i Wigury 101 , 02-089 Warsaw , Poland
| | - Radosław Kamiński
- Department of Chemistry , University of Warsaw , Żwirki i Wigury 101 , 02-089 Warsaw , Poland
| | - Krzysztof Durka
- Department of Chemistry , Warsaw University of Technology , Noakowskiego 3 , 00-664 Warsaw , Poland
| | - Krzysztof Woźniak
- Biological and Chemical Research Centre, Department of Chemistry , University of Warsaw , Żwirki i Wigury 101 , 02-089 Warsaw , Poland
| |
Collapse
|
14
|
Bao D, Wang M, Yang C, Yang Y, Ma X. Concerted Mechanisms of Excited-State Proton Intramolecular Transfer for Bis-2,4-(2-benzoxazolyl)-hydroquinone and Its Derivatives. J Phys Chem A 2017; 121:8217-8226. [PMID: 28994587 DOI: 10.1021/acs.jpca.7b07753] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The concerted mechanisms of excited state intramolecular proton transfer (ESIPT) of bis-2,4-(2-benzoxazolyl)-hydroquinone (BBHQ') and its derivatives (BBHQ'- and DHBO') have been investigated using the density functional theory (DFT) and the time-dependent density functional theory (TDDFT). The calculated absorption and emission spectra of BBHQ' and its derivatives are in good agreement with the experimental results. The calculated bond lengths, bond angles, and IR vibrational spectra linked with hydrogen bond of molecular BBHQ' in the S0 and S1 states demonstrate that the hydrogen bond is strengthened in the S1 state. Compared to BBHQ', BBHQ'- has a weak change of hydrogen bond between the S1 and S0 states. The calculation results show that there are three stable structures of BBHQ' in the S1 state. We find that the structure corresponding to the 481 nm fluorescence spectrum corresponds to BBHQ'-A rather than BBHQ'--K (Tetrahedron Lett., 2016, 57, 3518). The calculated frontier molecular orbitals (MOs) indicate the nature of the charge distribution and the trend of proton transfer of BBHQ'-A. The constructed potential energy surfaces of BBHQ' and DBHO' further elucidate the proposed mechanism that one-proton or two-proton transfer can happen (stepwise or synchronous) in the S1 states. The proposed ESIPT mechanism can provide a good explanation of the phenomenon of fluorescence quenching of BBHQ' and its derivatives. Finally, the weak interaction types are discriminated through the reduced density gradient (RDG) analyses of BBHQ' and BBHQ'-.
Collapse
Affiliation(s)
- Dongshuai Bao
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
| | - Meishan Wang
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
| | - Chuanlu Yang
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
| | - Yunfan Yang
- State Key Lab of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
| | - Xiaoguang Ma
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
| |
Collapse
|
15
|
Chen YW, Lee GH, Lai CK. Fluorescent mesogenic boron difluoride complexes derived from heterocyclic benzoxazoles. Dalton Trans 2017; 46:12274-12283. [PMID: 28879357 DOI: 10.1039/c7dt02937c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One new series of boron difluoride complexes 1 derived from heterocyclic benzoxazoles 2 was reported, and their mesomorphic and optical properties were also investigated. One single crystal of the mesogenic BF2 complex 1a (m = 12, n = 8) was obtained, and its single crystal and molecular structure were resolved. The geometry coordination at the central boron atom is tetrahedral. It crystallizes in a triclinic space group P1[combining macron] with Z = 4. The overall molecular shape was described as slightly bent Z-shapes, and the molecular length was ca. 34.06 Å. Weak intramolecular and intermolecular H-bonds observed in the crystal lattice were attributed to the formation of mesophases. The results indicated that benzoxazoles 2a (n = 6, 8, 12) formed monotropic SmA phases, while boron difluoride complexes 1a (n = 6, 8, 12, 16) exhibited monotropic SmC mesophases. In contrast, all compounds of 2b and 1b (m = 1, n = 12 for all) were not mesogenic. Boron complexes 1 emitted a pronounced violet emission at λmax = 399 nm in solution at room temperature.
Collapse
Affiliation(s)
- Ya-Wen Chen
- Department of Chemistry, National Central University, Chung-Li, Taiwan, Republic of China.
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei 10660, Taiwan, Republic of China
| | - Chung K Lai
- Department of Chemistry, National Central University, Chung-Li, Taiwan, Republic of China.
| |
Collapse
|
16
|
Urban M, Durka K, Jankowski P, Serwatowski J, Luliński S. Highly Fluorescent Red-Light Emitting Bis(boranils) Based on Naphthalene Backbone. J Org Chem 2017; 82:8234-8241. [DOI: 10.1021/acs.joc.7b01001] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Mateusz Urban
- Department
of Physical Chemistry, and ‡Chair of Inorganic Chemistry and
Solid State Technology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland
| | - Krzysztof Durka
- Department
of Physical Chemistry, and ‡Chair of Inorganic Chemistry and
Solid State Technology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland
| | - Piotr Jankowski
- Department
of Physical Chemistry, and ‡Chair of Inorganic Chemistry and
Solid State Technology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland
| | - Janusz Serwatowski
- Department
of Physical Chemistry, and ‡Chair of Inorganic Chemistry and
Solid State Technology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland
| | - Sergiusz Luliński
- Department
of Physical Chemistry, and ‡Chair of Inorganic Chemistry and
Solid State Technology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland
| |
Collapse
|
17
|
Elbert SM, Wagner P, Kanagasundaram T, Rominger F, Mastalerz M. Boroquinol Complexes with Fused Extended Aromatic Backbones: Synthesis and Optical Properties. Chemistry 2017; 23:935-945. [PMID: 27862420 DOI: 10.1002/chem.201604421] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 01/18/2023]
Abstract
Boron-based dyes are attractive synthetic targets due to their large variability of absorption and emission wavelengths. Through Pictet-Spengler cyclizations, followed by oxidation, π-extended boroquinols have been synthesized. During optimization of the reaction conditions, an unusual dearylation has been found and mechanistically investigated. For two of the synthesized boroquinols, mechanochromic effects with bathochromic shifts up to 50 nm were found upon grinding.
Collapse
Affiliation(s)
- Sven M Elbert
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Philippe Wagner
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Thines Kanagasundaram
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| |
Collapse
|
18
|
Frath D, Benelhadj K, Munch M, Massue J, Ulrich G. Polyanils and Polyboranils: Synthesis, Optical Properties, and Aggregation-Induced Emission. J Org Chem 2016; 81:9658-9668. [DOI: 10.1021/acs.joc.6b01756] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Denis Frath
- Institut de chimie et procédés
pour l’énergie, l’environnement et la santé
(ICPEES), groupe Chimie Organique pour les Matériaux, la Biologie
et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, Strasbourg 67087 Cedex 2, France
| | - Karima Benelhadj
- Institut de chimie et procédés
pour l’énergie, l’environnement et la santé
(ICPEES), groupe Chimie Organique pour les Matériaux, la Biologie
et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, Strasbourg 67087 Cedex 2, France
| | - Maxime Munch
- Institut de chimie et procédés
pour l’énergie, l’environnement et la santé
(ICPEES), groupe Chimie Organique pour les Matériaux, la Biologie
et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, Strasbourg 67087 Cedex 2, France
| | - Julien Massue
- Institut de chimie et procédés
pour l’énergie, l’environnement et la santé
(ICPEES), groupe Chimie Organique pour les Matériaux, la Biologie
et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, Strasbourg 67087 Cedex 2, France
| | - Gilles Ulrich
- Institut de chimie et procédés
pour l’énergie, l’environnement et la santé
(ICPEES), groupe Chimie Organique pour les Matériaux, la Biologie
et l’Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, Strasbourg 67087 Cedex 2, France
| |
Collapse
|
19
|
Mtiraoui H, Gharbi R, Msaddek M, Bretonnière Y, Andraud C, Renard PY, Sabot C. Solution and solid-state fluorescence of 2-(2′-hydroxyphenyl)-1,5-benzodiazepin-2-one (HBD) borate complexes. RSC Adv 2016. [DOI: 10.1039/c6ra19246g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new family of fluorescent 1,5-benzodiazepin-2-one (HBD) borate complexes was prepared in good yields, and fully characterized by means of MS, NMR and IR spectroscopy, as well as X-ray crystal structure analysis for compound 13.
Collapse
Affiliation(s)
- Hasan Mtiraoui
- Université Monastir
- Laboratory of Heterocyclic Chemistry Natural Products and Reactivity/CHPNR
- Department of Chemistry
- Faculty of Science of Monastir
- 5000 Monastir
| | - Rafik Gharbi
- Université Monastir
- Laboratory of Heterocyclic Chemistry Natural Products and Reactivity/CHPNR
- Department of Chemistry
- Faculty of Science of Monastir
- 5000 Monastir
| | - Moncef Msaddek
- Université Monastir
- Laboratory of Heterocyclic Chemistry Natural Products and Reactivity/CHPNR
- Department of Chemistry
- Faculty of Science of Monastir
- 5000 Monastir
| | - Yann Bretonnière
- Université Lyon
- ENS de Lyon
- CNRS
- Université Lyon 1
- Laboratoire de Chimie
| | - Chantal Andraud
- Université Lyon
- ENS de Lyon
- CNRS
- Université Lyon 1
- Laboratoire de Chimie
| | | | | |
Collapse
|