Precision Synthesis of Various Low-Bandgap Donor-Acceptor Alternating Conjugated Polymers via Living Suzuki-Miyaura Catalyst-Transfer Polymerization.
Angew Chem Int Ed Engl
; 61(31): e202205828, 2022 Aug 01.
Article
em En
| MEDLINE
| ID: mdl-35650688
ABSTRACT
Herein, we demonstrate that living Suzuki-Miyaura catalyst-transfer polymerization (SCTP) using a RuPhos Pd G3 precatalyst is a versatile method for the precision synthesis of various donor-acceptor alternating conjugated polymers (DA ACPs). First, the living SCTP of biaryl monomers with combinations of both medium to strong A and D were optimized to produce DA ACPs with controlled number average molecular weight (Mn ), narrow dispersity (Ð, 1.05-1.29), and high yield (>87 %). Moreover, its expansion to controlled polymerization (Mn =9.2-40.0â
kg mol-1 ) of an A1 -D-A2 -D quateraryl monomer containing diketopyrrolopyrrole (DPP; strong A) was successful. The living SCTP also enabled the efficient one-pot synthesis of various diblock and triblock copolymers. Lastly, the DA ACPs showed tunable optical band gap (Eg opt , from 1.29 to 1.77â
eV) and highest occupied molecular orbital (HOMO) level (from -5.57 to -4.75â
eV), while their block copolymers exhibited broad absorption ranges and promising visible light-harvesting properties.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2022
Tipo de documento:
Article