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Kang H, Wang Q, Gao X, Feng Y, Xu H, Song J, Han J, Gao L, Li Z. Synthesis, Crystal Structure, and Photophysical Properties of Bromothiophene-Functionalized BF 2-Curcuminoid as a Versatile Building Block. Macromol Rapid Commun 2024:e2400246. [PMID: 38923160 DOI: 10.1002/marc.202400246] [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: 04/17/2024] [Revised: 06/19/2024] [Indexed: 06/28/2024]
Abstract
A novel bromothiophene-functionalized BF2-curcuminoid (BTC-BF2) is synthesized by Knoevenagel condensation reaction. The structure of BTC-BF2 is determined by 1H-nuclear magnetic resonance (1H NMR), 13C-nuclear magnetic resonance (13C NMR), and high-resolution mass spectrometry (HRMS). Moreover, a nearly coplanar single crystal structure is successfully obtained and form a mesh structure through intermolecular multiple C─H···F hydrogen bond interactions. As expected, as-prepared BTC-BF2 exhibits solvent-dependent photophysical properties in solvents with different polarity and an intense red solid-state fluorescence. Density functional theory calculations further verify the relationships between its intrinsic electronic features and the photophysical properties. For its potential application aspect, BTC-BF2 shows a certain ability to generate singlet oxygen under irradiation with 530 nm green light. Moreover, BTC-BF2 can be utilized as versatile building block to construct novel far-red or NIR BF2-curcuminoid complexes for widely biological applications.
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Affiliation(s)
- Haixia Kang
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Qilian Wang
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Xingrui Gao
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Yongliang Feng
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Hemin Xu
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Jinzhao Song
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Jingfang Han
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Liujing Gao
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
| | - Ziyong Li
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, P. R. China
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Willis-Fox N, Watchorn-Rokutan E, Rognin E, Daly R. Technology pull: scale-up of polymeric mechanochemical force sensors. TRENDS IN CHEMISTRY 2023. [DOI: 10.1016/j.trechm.2023.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Poggi B, Lopez E, Métivier R, Bodelot L, Allain C. Mechanofluorochromic Difluoroboron β-diketonates based Polymer Composites: Towards Multi-Stimuli Responsive Mechanical Stress Probes. Macromol Rapid Commun 2022; 43:e2200134. [PMID: 35510422 DOI: 10.1002/marc.202200134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/06/2022] [Indexed: 11/06/2022]
Abstract
Developing mechano-responsive fluorescent polymers that exhibit distinct responses to distinct mechanical stresses requires a careful design of the fluorophore in order to tune its interactions with the polymer. A series of mechanofluorochromic (MFC) polymer composites has been prepared by dispersing difluoroboron diketonates complexes with various alkyl side chain lengths (DFB-alkyl) in linear low-density polyethylene (LLDPE). Observation of the resulting polymer composites under microscope reveals different aggregate sizes of the three DFB-alkyl, thus confirming the functionalization by alkyl side chains as a powerful approach to control the aggregation process in a polymer. Besides, the three polymer composite samples are shown to be sensitive to both stretching and scratching, thereby consisting in the first reported example of MFC polymer responding to these two distinct mechanical stimuli. To establish a structure-property relationship, our strategy consisted in applying controlled tensile or friction forces while simultaneously monitoring fluorescence changes. Interestingly, the intensity of the MFC response to both stretching and scratching depends on the alkyl chain length and thus on the aggregation properties of the fluorophore. According to a time-resolved fluorescence study, emission was found to originate from different species following the type of applied stress (tensile or friction force). This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Benjamin Poggi
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, Gif-sur-Yvette, 91190, France
| | - Elliot Lopez
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, Gif-sur-Yvette, 91190, France
| | - Rémi Métivier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, Gif-sur-Yvette, 91190, France
| | - Laurence Bodelot
- LMS, CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, Palaiseau Cedex, 91128, France
| | - Clémence Allain
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, Gif-sur-Yvette, 91190, France
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Li Q, Wang Q, Yuan Y, Chen Y. Mechanochemiluminescent hydrogels for real-time visualization of chemical bond scission. Synlett 2022. [DOI: 10.1055/a-1733-6310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Quantitative and real-time characterization of mechanically induced bond scission events taken place in polymeric hydrogels is essential to uncover their fracture mechanics. Herein, a class of mechanochemiluminescent swelling hydrogels have been synthesized through a facile micellar copolymerization method using chemiluminescent bis(adamantyl)-1,2-dioxetane (Ad) as a crosslinker. This design and synthetic strategy ensure intense mechanochemiluminescence from Ad located in a hydrophobic network inside micelles. Moreover, the mechanochemiluminescent colors can be tailored from blue to red by mixing variant acceptors. Taking advantages of the transient nature of dioxetane chemiluminescence, the damage distribution and crack evolution of the hydrogels can be visualized and analyzed with high spatial and temporal resolution. The results demonstrate the strengths of the Ad mechanophore and micellar copolymerization method in the study of damage evolution and fracture mechanism of swelling hydrogels.
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Affiliation(s)
- Qing Li
- Department of Chemistry, Tianjin University, Tianjin, China
| | - Qi Wang
- College of Chemistry, Jilin University, Changchun, China
| | - Yuan Yuan
- Department of Chemistry, Tianjin University, Tianjin, China
| | - Yulan Chen
- Department of Chemistry, Tianjin University, Tianjin, China
- College of Chemistry, Jilin University, Changchun, China
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