Influence of Selenium on the Optoelectronic Properties of a Series of Structurally Simple p‐type Polymers for Organic Thin‐Film Transistors DOI
Martina Rimmele,

Patipan Sukpoonprom,

Adam V. Marsh

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Tremendous efforts have been dedicated to improving the performance of organic thin-film transistors (OTFTs) through careful polymer design. Sulfur-containing polymers studied in-depth; however, their selenium-containing analogs remain rarer. Herein, a series low synthetic complexity with systematically increasing selenium content are presented. Three novel FO6-Se, FO6-BS-T, and FO6-BS-Se synthesized using facile two-step protocol, combining combinations selenophene, thiophene, benzothiadiazole (BT), benzoselenadiazole (BS) units. The optical, electrochemical, morphological properties these comprehensively analyzed, revealing interesting structure-property relationships. Results show significant bathochromic shift in absorption emission spectra upon Se content. Charge transport evaluated OTFTs, FO6-BS-T exhibiting highest hole mobility 0.038 cm2V-1s-1 when annealed at 100 °C. Grazing-incidence wide-angle X-ray scattering (GIWAXS) studies reveal reduced crystallinity BS incorporation density functional theory (DFT) calculations indicate increased backbone twisting inclusion compared BT. This work demonstrates how systematic alters properties, particularly frontier molecular levels, morphology, contributing understanding scalable for potential application transistors.

Language: Английский

Influence of Selenium on the Optoelectronic Properties of a Series of Structurally Simple p‐type Polymers for Organic Thin‐Film Transistors DOI
Martina Rimmele,

Patipan Sukpoonprom,

Adam V. Marsh

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Tremendous efforts have been dedicated to improving the performance of organic thin-film transistors (OTFTs) through careful polymer design. Sulfur-containing polymers studied in-depth; however, their selenium-containing analogs remain rarer. Herein, a series low synthetic complexity with systematically increasing selenium content are presented. Three novel FO6-Se, FO6-BS-T, and FO6-BS-Se synthesized using facile two-step protocol, combining combinations selenophene, thiophene, benzothiadiazole (BT), benzoselenadiazole (BS) units. The optical, electrochemical, morphological properties these comprehensively analyzed, revealing interesting structure-property relationships. Results show significant bathochromic shift in absorption emission spectra upon Se content. Charge transport evaluated OTFTs, FO6-BS-T exhibiting highest hole mobility 0.038 cm2V-1s-1 when annealed at 100 °C. Grazing-incidence wide-angle X-ray scattering (GIWAXS) studies reveal reduced crystallinity BS incorporation density functional theory (DFT) calculations indicate increased backbone twisting inclusion compared BT. This work demonstrates how systematic alters properties, particularly frontier molecular levels, morphology, contributing understanding scalable for potential application transistors.

Language: Английский

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