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New Progress in Functional Conjugated Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: closed (1 August 2024) | Viewed by 5400

Special Issue Editor


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Guest Editor
Department of Chemistry and Centre for Processable Electronics, Imperial College London, London, UK
Interests: organic semiconductor; conjugated polymer; molecular design; optoelectronic device; solar energy

Special Issue Information

Dear Colleagues,

Conjugated polymers are organic macromolecules with a backbone chain of alternating double- and single- bonds. Delocalised π-electrons from neighbouring overlapping p-orbitals enable the traditional ‘plastics’ to achieve metallic electrical conductivity and lead to interesting and useful optical and electronic properties. These electronic materials have attracted the joint attention of synthetic chemists, material physicists, and device engineers. Importantly, conjugated polymers have demonstrated diverse applications in flexible organic photovoltaics, transistors, polymer light-emitting diodes, bioelectronics (with mixed ionic and electronic conductivity), and more. 

This Special Issue aims to present the recent advancements in the field of functional conjugated polymers. Topics of interest include, but are not limited to:

  • Design and synthetic strategies for conjugated polymers;
  • Novel functionalization and post-polymerization modifications;
  • Structure-property relationships in conjugated polymers;
  • Applications of conductive polymers, such as OPVs, OFETs, and OLED, etc.;
  • Mixed ionic and electronic conduction in conjugated polymers and bioelectronics;
  • Conjugated polymer composites;
  • Sustainable conjugated polymers.

I sincerely invite you to submit original research articles, reviews, and short communications to this Special Issue. Please contact the editorial team if you have any enquiries related to your submission.

Kind regards,
Dr. Qiao He
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • conjugated polymer
  • organic semiconductor
  • molecular design
  • optoelectronic property
  • structure-property relationship
  • aggregation and self-assembly
  • polymer electronic device
  • flexible electronics
  • energy conversion and storage

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Published Papers (2 papers)

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Research

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18 pages, 5269 KiB  
Article
Inter-Oligomer Interaction Influence on Photoluminescence in Cis-Polyacetylene Semiconductor Materials
by Kamrun N. Keya, Yulun Han, Wenjie Xia and Dmitri Kilin
Polymers 2024, 16(13), 1896; https://doi.org/10.3390/polym16131896 - 2 Jul 2024
Viewed by 823
Abstract
Semiconducting conjugated polymers (CPs) are pivotal in advancing organic electronics, offering tunable properties for solar cells and field-effect transistors. Here, we carry out first-principle calculations to study individual cis-polyacetylene (cis-PA) oligomers and their ensembles. The ground electronic structures are obtained using density functional [...] Read more.
Semiconducting conjugated polymers (CPs) are pivotal in advancing organic electronics, offering tunable properties for solar cells and field-effect transistors. Here, we carry out first-principle calculations to study individual cis-polyacetylene (cis-PA) oligomers and their ensembles. The ground electronic structures are obtained using density functional theory (DFT), and excited state dynamics are explored by computing nonadiabatic couplings (NACs) between electronic and nuclear degrees of freedom. We compute the nonradiative relaxation of charge carriers and photoluminescence (PL) using the Redfield theory. Our findings show that electrons relax faster than holes. The ensemble of oligomers shows faster relaxation compared to the single oligomer. The calculated PL spectra show features from both interband and intraband transitions. The ensemble shows broader line widths, redshift of transition energies, and lower intensities compared to the single oligomer. This comparative study suggests that the dispersion forces and orbital hybridizations between chains are the leading contributors to the variation in PL. It provides insights into the fundamental behaviors of CPs and the molecular-level understanding for the design of more efficient optoelectronic devices. Full article
(This article belongs to the Special Issue New Progress in Functional Conjugated Polymers)
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Review

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28 pages, 19048 KiB  
Review
Structure–Property Relationship, Glass Transition, and Crystallization Behaviors of Conjugated Polymers
by Tengfei Qu, Guangming Nan, Yan Ouyang, Bahaerguli. Bieketuerxun, Xiuling Yan, Yunpeng Qi and Yi Zhang
Polymers 2023, 15(21), 4268; https://doi.org/10.3390/polym15214268 - 30 Oct 2023
Cited by 3 | Viewed by 3397
Abstract
Conjugated polymers have gained considerable interest due to their unique structures and promising applications in areas such as optoelectronics, photovoltaics, and flexible electronics. This review focuses on the structure–property relationship, glass transition, and crystallization behaviors of conjugated polymers. Understanding the relationship between the [...] Read more.
Conjugated polymers have gained considerable interest due to their unique structures and promising applications in areas such as optoelectronics, photovoltaics, and flexible electronics. This review focuses on the structure–property relationship, glass transition, and crystallization behaviors of conjugated polymers. Understanding the relationship between the molecular structure of conjugated polymers and their properties is essential for optimizing their performance. The glass transition temperature (Tg) plays a key role in determining the processability and application of conjugated polymers. We discuss the mechanisms underlying the glass transition phenomenon and explore how side-chain interaction affects Tg. The crystallization behavior of conjugated polymers significantly impacts their mechanical and electrical properties. We investigate the nucleation and growth processes, as well as the factors that influence the crystallization process. The development of the three generations of conjugated polymers in controlling the crystalline structure and enhancing polymer ordering is also discussed. This review highlights advanced characterization techniques such as X-ray diffraction, atomic force microscopy, and thermal analysis, which provide insights into molecular ordering and polymer–crystal interfaces. This review provides an insight of the structure–property relationship, glass transition, and crystallization behaviors of conjugated polymers. It serves as a foundation for further research and development of conjugated polymer-based materials with enhanced properties and performance. Full article
(This article belongs to the Special Issue New Progress in Functional Conjugated Polymers)
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