Synthesis and Brønsted acid doping of solution processable poly(thienylene vinylene) for thermoelectric application

Wu, Wei-Ni; Sato, K.; Fu, Junhao; Chan, Yi‐Tsu; Lin, Jhih-Min; Tung, Shih‐Huang; Higashihara, Tomoya; Liu, Chengliang

doi:10.1039/d3ta01117h

Cited by 5 publications

(2 citation statements)

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“…Doped donor–acceptor (D–A) conjugated polymers have attracted substantial attention as a highly promising class of materials for thermoelectric applications. 18–42 The inherent advantages of D–A copolymers lie in their capacity for meticulous property tailoring through the strategic manipulation of molecular structures in both donor and acceptor components. Notably, benzothiadiazole (BT) has emerged as an exemplary acceptor due to its structural rigidity and pronounced electron-withdrawing characteristics.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the thermoelectric performance of donor–acceptor conjugated polymers through dopant miscibility: a comparative study of fluorinated substituents and side-chain lengths

Ding,

Chen,

Liu

et al. 2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Enhancing the thermoelectric performance of donor–acceptor conjugated polymers through dopant miscibility: a comparative study of fluorinated substituents and side-chain lengths

Ding,

Chen,

Liu

et al. 2024

J. Mater. Chem. A

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“…Organic semiconducting polymers are widely investigated for their pivotal role in various applications such as organic photovoltaics (OPVs), organic thin film transistors (OTFTs), perovskite solar cells, and organic light emitting diodes (OLEDs) . These polymers offer numerous advantages, including cost-effectiveness, lightweight nature, inherent flexibility, ease of molecular modification, and suitability for solution-based processing. − The desired properties of donor–acceptor (D–A) conjugated polymers can be achieved by altering donor and acceptor building bocks. − Recent years have witnessed extensive research focused on the development of D–A conjugated polymers as an efficient approach to create electronic materials with narrow bandgaps and high performance in various devices.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Study of Donor–Acceptor Conjugated Polymers via a Green Indophenine Polymerization Strategy

Patel,

Kalita

et al. 2024

ACS Appl. Polym. Mater.

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In this study, we endeavored to synthesize conjugated polymers utilizing the conditions of the indophenine reaction, which is known for its facile and environmentally friendly synthetic approach. The indophenine reaction is extensively used for the synthesis of various of small molecules. The synthesized isatin-based precursor compounds (3−6) were well characterized by IR, NMR ( 1 H and 13 C), and HRMS analysis. Four conjugated polymers P1−P4 were synthesized by concentrated sulfuric acid catalyzed indophenine reactions between compounds 3−6 and dialkoxythiophene. The HOMO energy level of the synthesized polymers was found to be below −5.8 eV. Polymers showed a lowlying LUMO energy level close to −4.3 eV. Gel permeation chromatography (GPC) analysis of polymers showed values of the weight-average molecular weight in the range of 24.7 to 30.5 kDa. Thermogravimetric analysis (TGA) showed that all polymers were quite stable up to ∼300 °C. The obtained RMS roughness values measured by atomic force measurement (AFM) analysis were 15.38, 14.33, 10.05, and 5.58 nm for polymers P1, P2, P3, and P4, respectively. The measured space charge current limited (SCLC) hole mobilities of polymers P1, P2, P3, and

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Design Principles for Enhancing Both Carrier Mobility and Stretchability in Polymer Semiconductors via Lewis Acid Doping

Weng,

Kang,

Chang

et al. 2024

Advanced Materials

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With the rise of skin‐like electronics, devices are increasingly coming into close contact with the human body, creating a demand for polymer semiconductors (PSCs) that combine stretchability with reliable electrical performance. However, balancing mechanical robustness with high carrier mobility remains a challenge. To address this, tris(pentafluorophenyl)borane (BCF) for Lewis acid doping is proposed to improve charge mobility while enhancing stretchability by increasing structural disorder. Through systematic investigation, several key structural principles have been identified to maximize the effectiveness of BCF doping in stretchable PSCs. Notably, increasing the lamellar stacking distance and reducing crystallinity facilitate the incorporation of BCF into the alkyl side‐chain regions, thereby enhancing both mobility and stretchability. Conversely, stronger Lewis base groups in the main chain negatively impact these improvements. These results demonstrate that with a small addition of BCF, a two‐fold increase in carrier mobility is achieved while simultaneously enhancing the crack onset strain to 100%. Furthermore, doped PSCs exhibit stable mobility retention under repeated 30% strains over 1000 cycles. This method of decoupling carrier mobility from mechanical properties opens up new avenues in the search for high‐mobility stretchable PSCs.

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Synthesis and Brønsted acid doping of solution processable poly(thienylene vinylene) for thermoelectric application

Abstract: Doped polythiophene (PT)-based semiconductors are of significant interest in the field of organic electronics, and are designed for novel thermoelectric applications based on their remarkable electrical properties, ease of processing,...

Cited by 5 publications

References 83 publications

Enhancing the thermoelectric performance of donor–acceptor conjugated polymers through dopant miscibility: a comparative study of fluorinated substituents and side-chain lengths

Enhancing the thermoelectric performance of donor–acceptor conjugated polymers through dopant miscibility: a comparative study of fluorinated substituents and side-chain lengths

Synthesis and Study of Donor–Acceptor Conjugated Polymers via a Green Indophenine Polymerization Strategy

Design Principles for Enhancing Both Carrier Mobility and Stretchability in Polymer Semiconductors via Lewis Acid Doping

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