Molecular Weight Engineering in High-Performance Ambipolar Emissive Mesopolymers.
Angew Chem Int Ed Engl
; 60(27): 14902-14908, 2021 Jun 25.
Article
em En
| MEDLINE
| ID: mdl-33908682
ABSTRACT
Mesopolymers with high solubility, free of structural defects, and negligible batch-to-batch variation open a new avenue for organic optoelectronics. Organic light emitting transistors that combine the functions of organic light-emitting diodes and organic field-effect transistors. However, charge transport ability and light emitting strength are contradictory within one conjugated polymer. Herein, three low-molecular-weight mesopolymers with thienopyrroledione-benzothiadiazole repeating units (meso-TBTF) were obtained. The mesopolymers show strong solid-state emission and high ambipolar carrier mobility. The molecular weights of meso-TBTF can be tuned by polymerization temperature. The mesopolymers have photoluminescence quantum yields (PLQY) of about 50 % in solution and 10 % in solid state. Polymer light emitting diodes of this material are fabricated to explore its potential use in optoelectronic devices.
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MEDLINE
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En
Ano de publicação:
2021
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Article