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Qi R, Shen W, Xu R, Li Z, Long Z, Wang Y, Tang Q, Kipper MJ, Popat K, Belfiore LA, Tang J. Excellent Electroluminescent Property of Eu 3+-Induced Polystyrene- co-poly(acrylic acid) Aggregates (EIPAs) in Polymeric Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2024; 16:36715-36726. [PMID: 38978456 DOI: 10.1021/acsami.4c06466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Eu3+-induced polystyrene-co-poly(acrylic acid) aggregates (EIPAs) were synthesized using a self-assembly approach, and their structures and photophysical characteristics were examined to achieve effective monochromatic red emission in polymer light-emitting diodes (PLEDs). By adjusting the monomer ratio in RAFT polymerization, the size of Eu3+-induced block copolymer nanoaggregates can be regulated, thereby modulating the luminescence intensity. High-performance bilayer polymer light-emitting devices were fabricated using poly(9,9-dioctylfluorene) (PFO) and 2-(tert-butylphenyl)-5-biphenylyl-1,3,4-oxadiazole (PBD) as the host matrix, with EIPAs as the guest dopant. The devices exhibited narrow red emission at 615 nm with a full width at half-maximum (fwhm) of 15 nm across doping concentrations of 1, 3, 5, and 10 wt %. At a doping concentration of 3 wt %, the device achieved a maximum brightness of 1864.48 cd/m2 at 193.82 mA/cm2 and an external quantum efficiency of 3.20% at a current density of 3.5 mA/cm2. These results indicate that incorporating polystyrene-co-poly(acrylic acid) with Eu3+ complexes enhances the excitation and emission intensity, as well as the structural stability of the emitting layer in PLEDs, thereby improving the device performance.
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Affiliation(s)
- Rui Qi
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Wenfei Shen
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Rui Xu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Zengkun Li
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Zaixin Long
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Qinglin Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Ketul Popat
- Department of Bioengineering, George Mason University, Fairfax, Virginia 22030, United States
| | - Laurence A Belfiore
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
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Kao CP, Lee JY, Tang MC, Lee HM. Design and synthesis of versatile ligand precursors based on phosphonium ylides for palladalactam formation and catalytic investigation. Dalton Trans 2024; 53:10475-10485. [PMID: 38836836 DOI: 10.1039/d4dt00862f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
A new series of ligand precursors designed for the synthesis of palladalactams has been developed. These precursors are easily accessible through a one-step reaction involving 2-chloro-N-phenylacetamide and a wide choice of various monophosphines, offering tunable electronic and steric properties within the ligand framework. The stability of both ligand precursors and resulting palladalactams in ambient air enhances their practical applicability. A newly synthesized palladalactam, featuring an electron-donating triethylphosphine moiety on the anionic phosphonium ylide ligand scaffold exhibited promising catalytic activities in the Mizoroki-Heck coupling reaction between aryl chlorides and alkenes. Theoretical calculations further affirmed that the ligand system in the complex is the most electron-donating, forming the strongest Pd-C bond compared to other complexes with alternative phosphine moieties.
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Affiliation(s)
- Cheng-Po Kao
- Department of Chemistry, National Changhua University of Education, Changhua, 500, Taiwan.
| | - Jhen-Yi Lee
- Department of Chemistry, National Changhua University of Education, Changhua, 500, Taiwan.
| | - Min-Cheng Tang
- Department of Chemistry, National Changhua University of Education, Changhua, 500, Taiwan.
| | - Hon Man Lee
- Department of Chemistry, National Changhua University of Education, Changhua, 500, Taiwan.
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Urbonavičius A, Krikštolaitytė S, Bieliauskas A, Martynaitis V, Solovjova J, Žukauskaitė A, Arbačiauskienė E, Šačkus A. Synthesis and Characterization of New Pyrano[2,3- c]pyrazole Derivatives as 3-Hydroxyflavone Analogues. Molecules 2023; 28:6599. [PMID: 37764375 PMCID: PMC10537540 DOI: 10.3390/molecules28186599] [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: 07/12/2023] [Revised: 09/01/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
In this paper, an efficient synthetic route from pyrazole-chalcones to novel 6-aryl-5-hydroxy-2-phenylpyrano[2,3-c]pyrazol-4(2H)-ones as 3-hydroxyflavone analogues is described. The methylation of 5-hydroxy-2,6-phenylpyrano[2,3-c]pyrazol-4(2H)-one with methyl iodide in the presence of a base yielded a compound containing a 5-methoxy group, while the analogous reaction of 5-hydroxy-2-phenyl-6-(pyridin-4-yl)pyrano[2,3-c]pyrazol-4(2H)-one led to the zwitterionic 6-(N-methylpyridinium)pyrano[2,3-c]pyrazol derivative. The treatment of 5-hydroxy-2,6-phenylpyrano[2,3-c]pyrazol-4(2H)-one with triflic anhydride afforded a 5-trifloylsubstituted compound, which was further used in carbon-carbon bond forming Pd-catalyzed coupling reactions to yield 5-(hetero)aryl- and 5-carbo-functionalized pyrano[2,3-c]pyrazoles. The excited-state intramolecular proton transfer (ESIPT) reaction of 5-hydroxypyrano[2,3-c]pyrazoles from the 5-hydroxy moiety to the carbonyl group in polar protic, polar aprotic, and nonpolar solvents was observed, resulting in well-resolved two-band fluorescence. The structures of the novel heterocyclic compounds were confirmed by 1H-, 13C-, 15N-, and 19F-NMR spectroscopy, HRMS, and single-crystal X-ray diffraction data.
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Affiliation(s)
- Arminas Urbonavičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania;
| | - Sonata Krikštolaitytė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Aurimas Bieliauskas
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania;
| | - Vytas Martynaitis
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Joana Solovjova
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Asta Žukauskaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
- Department of Chemical Biology, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Eglė Arbačiauskienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Algirdas Šačkus
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania;
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Aryanasab F. Mizoroki–Heck coupling reaction on the surface of sepiolite clay-supported Pd/Cu nanoalloy. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2034883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Fezzeh Aryanasab
- Chemistry Research Group, Chemistry and Petrochemical Research Center, Standard Research Institute (SRI), Karaj, Iran
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Khan D, Sharma S, Shukla P. Microwave assisted L‐proline catalyzed
One‐Pot Three‐Component
Reaction for the synthesis of
4‐aminoaryl‐2‐phenyl‐2H
‐3‐nitrochromene hybrid via Domino
Michael‐Henry‐Michael
addition reaction. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4447] [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)
- Danish Khan
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee Uttarakhand India
| | - Saurabh Sharma
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee Uttarakhand India
| | - Prakhar Shukla
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee Uttarakhand India
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Khan D, Parveen I, Shaily, Sharma S. Design, Synthesis and Characterization of Aurone Based α,β‐unsaturated Carbonyl‐Amino Ligands and their Application in Microwave Assisted Suzuki, Heck and Buchwald Reactions. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Danish Khan
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
| | - Iram Parveen
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
| | - Shaily
- Department of Chemistry D. B. S. (P.G.) College Dehradun 248001 Uttarakhand India
| | - Saurabh Sharma
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
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