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

Author(s):  
Nicholas Marshall ◽  
Andres Rodriguez

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>

2020 ◽  
Author(s):  
Nicholas Marshall ◽  
Andres Rodriguez

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>


2020 ◽  
Author(s):  
Nicholas Marshall ◽  
Andres Rodriguez

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>


2020 ◽  
Vol 2 ◽  
pp. e6 ◽  
Author(s):  
Nicholas Marshall ◽  
Andres Rodriguez

Cross-coupling at aryl halide thin films has been well-established as a technique for the surface-initiated Kumada catalyst transfer polymerization (SI-KCTP), used to produce covalently bound conjugated polymer thin films. In this work, we report that the spontaneous grafting of 4-iodobenzenediazonium tetrafluoroborate on gold substrates creates a durable iodoarene layer which is effective as a substrate for cross-coupling reactions including SI-KCTP. Using cyclic voltammetry of a surface-coupled ferrocene terminating agent, we have measured initiator surface coverage produced by oxidative addition of Pd(t-Bu3P)2 and estimated the rate constant of the termination reaction in the SI-KCTP system with 2-chloromagnesio-5-bromothiophene and Pd(t-Bu3P)2. We used this system to prepare uniform polythiophene thin films averaging 90 nm in thickness.


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

2015 ◽  
Vol 36 (20) ◽  
pp. 1816-1821 ◽  
Author(s):  
Laurie Parrenin ◽  
Cyril Brochon ◽  
Georges Hadziioannou ◽  
Eric Cloutet

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