scholarly journals Accessing conjugated polymers with precisely controlled heterobisfunctional chain ends via post-polymerization modification of the OTf group and controlled Pd(0)/t-Bu3P-catalyzed Suzuki cross-coupling polymerization

2015 ◽  
Vol 51 (80) ◽  
pp. 14869-14872 ◽  
Author(s):  
Hong-Hai Zhang ◽  
Qiao-Sheng Hu ◽  
Kunlun Hong
Keyword(s):  
Conjugated Polymers ◽  
Cross Coupling ◽  
Coupling Polymerization

Accessing of conjugated polymers with precisely controlled heterobisfunctional chain ends was achieved via the post-polymerization modification of the triflate (OTf) group.

scholarly journals Synthesis of Anthradithiophene Containing Conjugated Polymers via a Cross-coupling Strategy

2020 ◽  
Author(s):  
Waseem A. Hussain ◽  
Kyle Plunkett
Keyword(s):  
Conjugated Polymers ◽  
Main Chain ◽  
Cross Coupling ◽  
Band Gaps ◽  
Coupling Reactions ◽  
Broad Absorption ◽  
Cross Coupling Reactions ◽  
Coupling Strategy ◽  
Coupling Polymerization

New conjugated polymers that incorporate dihexylanthradithiophene (DHADT) in the main chain were prepared by Stille and Sonogashira cross-coupling polymerization reactions. The polymerization chemistry is enabled by a soluble 5,11-dibromodihexylanthradithiophene monomer that is capable of cross-coupling reactions. Four readily soluble DHADT containing co-polymers were prepared and characterized experimentally and computationally. These polymers possess HOMO energies of -5.18 eV to -5.43 eV and LUMO energies of -3.0 eV to -2.82 eV. The notable optical features include broad absorption and band gaps ranging from 1.62 eV to 2.15 eV.

scholarly journals Synthesis of Anthradithiophene Containing Conjugated Polymers via a Cross-coupling Strategy

2020 ◽  
Author(s):  
Waseem A. Hussain ◽  
Kyle Plunkett
Keyword(s):  
Conjugated Polymers ◽  
Main Chain ◽  
Cross Coupling ◽  
Band Gaps ◽  
Coupling Reactions ◽  
Broad Absorption ◽  
Cross Coupling Reactions ◽  
Coupling Strategy ◽  
Coupling Polymerization

New conjugated polymers that incorporate dihexylanthradithiophene (DHADT) in the main chain were prepared by Stille and Sonogashira cross-coupling polymerization reactions. The polymerization chemistry is enabled by a soluble 5,11-dibromodihexylanthradithiophene monomer that is capable of cross-coupling reactions. Four readily soluble DHADT containing co-polymers were prepared and characterized experimentally and computationally. These polymers possess HOMO energies of -5.18 eV to -5.43 eV and LUMO energies of -3.0 eV to -2.82 eV. The notable optical features include broad absorption and band gaps ranging from 1.62 eV to 2.15 eV.

Cross-Coupling Polymerization at Iodophenyl Thin Films Prepared by Spontaneous Grafting of a Diazonium Salt

2019 ◽  
Author(s):  
Nicholas Marshall ◽  
Andres Rodriguez
Keyword(s):  
Thin Films ◽  
Diazonium Salt ◽  
Cross Coupling ◽  
Coupling Polymerization

Development of a method for the surface-initiated Kumada cross-coupling polymerization based on 4-iodophenyldiazonium salt thin films, and use of this method to make very thick polythiophene brushes.<br>

scholarly journals Synthesis of π-Conjugated Polymers Containing Benzotriazole Units via Palladium-Catalyzed Direct C-H Cross-Coupling Polycondensation for OLEDs Applications

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 254
Author(s):  
Dong Han ◽  
Jingwen Li ◽  
Qiang Zhang ◽  
Zewang He ◽  
Zhiwei Wu ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Quantum Efficiency ◽  
Cross Coupling ◽  
Building Blocks ◽  
Gravimetric Analysis ◽  
19F Nmr Spectra ◽  
Light Emitting ◽  
Molecular Weights ◽  
Palladium Catalyzed ◽  
Red Luminescence

Four D-π-A conjugated polymers, namely P1–P4, which contain benzotriazole building blocks in their backbone as acceptor, are synthesized via palladium-catalyzed direct C-H cross-coupling polycondensation of 5,6-difluorobenzotriazole with different thiophene derivatives, including 3-octylthiophene, 2,2’-bithiophene, thieno[3,4-b][1,4]dioxine, and 4,4-dioctyl-4H-silolo-[3,2-b:4,5-b’]dithiophene as donor units, respectively. Taking the polymer P1 as an example, the chemical structure of the polymer is demonstrated by 1H and 19F NMR spectra. The optical, electrochemical, and thermal properties of these polymers are assessed by UV–vis absorption and fluorescence spectroscopy, cyclic voltammetry (CV), and thermal gravimetric analysis (TGA), respectively. DFT simulations of all polymers are also performed to understand their physicochemical properties. Furthermore, P1 and P2, which have relatively higher molecular weights and better fluorescent quantum efficiency than those of P3 and P4, are utilized as lighting emitters for organic light-emitting diodes (OLEDs), affording promising green and red luminescence with 0.07% and 0.14% of maximum external quantum efficiency, respectively, based on a device with an architecture of ITO/PEDOT:PSS/PTAA/the polymer emitting layer/TPBi/LiF/Al.

scholarly journals Cross-Coupling Polymerization at Iodophenyl Thin Films Prepared by Spontaneous Grafting of a Diazonium Salt

2020 ◽  
Author(s):  
Nicholas Marshall ◽  
Andres Rodriguez
Keyword(s):  
Thin Films ◽  
Polymer Film ◽  
Film Growth ◽  
Diazonium Salt ◽  
Cross Coupling ◽  
Chain Termination ◽  
Kinetics Of ◽  
Coupling Polymerization

Development of a method for the surface-initiated Kumada cross-coupling polymerization based on 4-iodophenyldiazonium salt thin films. Studies of the kinetics of chain termination and polymer film growth, and use of this method to make polythiophene brushes.<br>

scholarly journals Unprecedented Regioregular Poly(1,4‐arylene)s Prepared by Nickel(II)‐Catalyzed Cross‐Coupling Polymerization of 2,5‐Disubstituted Bromo(chloro)arylene

2019 ◽  
Vol 58 (28) ◽  
pp. 9547-9550 ◽  
Author(s):  
Yushin Shibuya ◽  
Naoki Nakagawa ◽  
Naoki Miyagawa ◽  
Toyoko Suzuki ◽  
Kentaro Okano ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Regioregular Poly ◽  
Coupling Polymerization
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