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Blue light-emitting fluorene–dendron hybridized polymers: optophysical features. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04571-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
AbstractIn this manuscript, we have demonstrated an efficient and rapid synthetic strategy for preparation of new fluorene–dendron-hybridized blue light-emitting polymers P1–P7 by the reaction of 9,9 long-chain dialkylated fluorenes M2–M8 with dendronized monomer (M1) under microwave-assisted reaction condition. These fluorene–dendron-hybridized polymers P1–P7 were characterized using different spectroscopic techniques. Furthermore, the optophysical properties of these polymers P1–P7 were studied which revealed that these synthesized polymers P1–P7 have potential to emerge as capable materials in the development of diodes, particularly for blue light emission. In the future, similar approaches would be utilized for preparation of light-emitting polymer composite.
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Rananaware MM, Ghase VD, Hasija D, Patil VR. Benzo crown ether functionalized conjugated polyfluorenes with anthracene fragment for sustainable light-emitting device technology. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03617-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ghase VD, Rananaware MM, Hasija DC, Patil VR. Efficient blue light-emitting polydibenzofluorenes through the integration of an anthracene unit. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hasija DC, Ghase VD, Rananaware MM, Patil VR. Ullmann coupling for low-cost synthesis of anthracene-based polyfluorenes: A photophysical approach. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008320945386] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A set of anthracene containing polyfluorenes (PFs) having 9,10-diphenylanthracene with alkyl substituents and aniline containing fluorenes were prepared. Commonly, light-emitting polymers were synthesized using expensive palladium-like catalysts. In the present work, palladium was replaced by copper as a cost-effective PF synthesis catalyst, which is also suitable for large-scale polymer synthesis. Synthesized PFs emit light in the blue region with a bandgap of 2.87–2.90 eV. Thermally stable PFs had a decomposition temperature of more than 305°C and a glass transition temperature of 125–138°C. PFs were soluble in organic solvents and had a molecular weight of around 21,700–25,500. The electrochemical study of these PFs showed low level of highest occupied molecular orbital (HOMO) energy of −5.16 to −5.26 eV, which was significantly higher than that of PF (5.7 eV). These findings suggested that the resulting PFs could be used as a component of the light-emitting diode.
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Affiliation(s)
- Deepika C Hasija
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai, Maharashtra, India
| | - Vaijayanti D Ghase
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai, Maharashtra, India
| | - Meenakshi M Rananaware
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai, Maharashtra, India
- Dwarkadas Jivanlal Sanghvi College of Engineering, Vile Parle (W), Mumbai, Maharashtra, India
| | - Vishwanath R Patil
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai, Maharashtra, India
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Alkyl and allyl substituted polydibenzofluorene: blue emitters for future display applications. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2940-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Exploring copper as a catalyst for cost effective synthesis of polyfluorenes: an alternative to platinum and palladium. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2344-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Tang P, Xiang K, Wei H, Li S, Xu C. A high-emissive and stable luminescent silafluorene hybrid constructed by hydrosilylation. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819857504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Under Karstedt’s catalyst, an organic–inorganic hybrid fluorescent nano-molecular dendrimer has been synthesized by grafting silafluorene units onto the polyhedral oligomeric silsesquioxane core through hydrosilylation reaction. The new hybrid molecule exhibits high solid fluorescence quantum efficiency because of the nano-size and large steric hindrance of the polyhedral oligomeric silsesquioxane core. Thermogravimetric analysis shows that the thermal stability of the target compound is effectively improved by the presence of polyhedral oligomeric silsesquioxane.
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Affiliation(s)
- Ping Tang
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Kai Xiang
- Beijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing, China
| | - Huijie Wei
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Shuhong Li
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Caihong Xu
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
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Recent development of crown-substituted polyfluorenes for blue light-emitting devices in organic electronics. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-018-2412-0] [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]
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