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Polymers
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Conjugated Polymers and Polymer Networks with Unconventional Structural and Functional...
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Conjugated Polymers and Polymer Networks with Unconventional Structural and Functional Features

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Chemistry".

Deadline for manuscript submissions: closed (20 September 2021) | Viewed by 17975

Special Issue Editors

Dr. Lei Fang

E-Mail Website
Guest Editor
Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
Interests: conjugated polymer; rigid backbone; conjugated microporous polymer; ladder polymer; polymer composite; thermoelectricity; thermal conductivity; paramagnetism; organic electronics; organic photovoltaics
Dr. Zi-Hao Guo

E-Mail Website
Guest Editor
South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
Interests: conjugated polymer, polymer assembly and giant molecule

Special Issue Information

Dear Colleagues,

The synthesis and application of conjugated polymers have thrived in the past few decades on account of their remarkable optoelectronic properties originating from the extended π-conjugation. Conjugated polymers have been extensively investigated and employed as active materials for soft electrodes, light-emitting diodes, field effect transistors, organic solar cells, flexible electronics, energy conversion, etc. Research on these polymers has not only fueled the advance of fundamental knowledge on electronic structures of π-systems but also cultivated important developments of cutting-edge commercial products.

In addition to their widely explored optical and electronic properties, conjugated polymers can also serve as the vehicle for other unprecedented yet unconventional properties, such as porosity, paramagentism, thermal conductivity, thermoelectricity, mechanical strengths, etc. Their applications can be extended far beyond the conventional scope of fields regarding organic electronics, to areas such as environmental remediation, sensing, functional coating, energy storage, fillers for composite materials, etc. In this context, it is in urgent demand to develop innovative synthesis for new structures and topologies to capitalize these promises. This themed issue covers the synthesis and investigation of broadly defined conjugated polymers and polymer networks, and their applications in a wide range of conventional and unconventional areas.

Dr. Lei Fang
Dr. Zihao Guo
Guest Editors

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.

Published Papers (4 papers)

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Research

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10 pages, 3138 KiB  
Article
Microwave-Assisted Classic Ullmann C–C Coupling Polymerization for Acceptor-Acceptor Homopolymers
by Zijie Li, Yusheng Chen, Pan Ye, Xiangli Jia, Xiaoxi Wu, Jianfei Wu, Qinqin Shi, Aidong Peng and Hui Huang
Polymers 2019, 11(11), 1741; https://doi.org/10.3390/polym11111741 - 24 Oct 2019
Cited by 3 | Viewed by 2546
Abstract
Developing cheap, clean and atomic-efficient synthetic methodologies for conjugated polymers are always critical for the field of organic electronics. Herein, classic Ullmann coupling polymerization is developed to synthesize a series of Acceptor-Acceptor (A-A) type homopolymers with microwave-assistance, which are supported by nuclear magnetic [...] Read more.
Developing cheap, clean and atomic-efficient synthetic methodologies for conjugated polymers are always critical for the field of organic electronics. Herein, classic Ullmann coupling polymerization is developed to synthesize a series of Acceptor-Acceptor (A-A) type homopolymers with microwave-assistance, which are supported by nuclear magnetic resonance (NMR), matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF), elemental analysis (EA) and gel permeation chromatography (GPC). The physicochemical properties of these polymers are studied by UV-vis spectroscopy, cyclic voltammetry (CV), thermal gravimetric analysis (TGA), and density functional theory (DFT) calculation. Furthermore, these A-A homopolymers are used as acceptors for all-polymer solar cells (All-PSCs), affording a promising efficiency of 3.08%, which is the highest value for A-A-homopolymer-based organic solar cells. Full article
(This article belongs to the Special Issue Conjugated Polymers and Polymer Networks with Unconventional Structural and Functional Features)
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10 pages, 3775 KiB  
Article
Simple Route to Synthesize Fully Conjugated Ladder Isomer Copolymers with Carbazole Units
by Shuang Chen, Feng Liu, Chao Wang, Jinghui Shen and Yonggang Wu
Polymers 2019, 11(10), 1619; https://doi.org/10.3390/polym11101619 - 7 Oct 2019
Cited by 3 | Viewed by 2518
Abstract
Two isomer polymers, P3 and P6, with fully conjugated ladder structures are presented by simple synthetic routes. The well-defined structures of fully conjugated ladder polymers P3 and P6 were ensured by the high yields of every reaction step. The fully rigid ladder structures [...] Read more.
Two isomer polymers, P3 and P6, with fully conjugated ladder structures are presented by simple synthetic routes. The well-defined structures of fully conjugated ladder polymers P3 and P6 were ensured by the high yields of every reaction step. The fully rigid ladder structures were confirmed by nuclear magnetic resonance (NMR), fourier transform infrared spectroscopy (FTIR), and photophysical test. Polymers P3 and P6 with bulky alkyl side chains exhibit good solution processability and desirable thermostable properties. After the intramolecular cyclization reaction, the band gaps of polymers P3 and P6 become lower (2.86 eV and 2.66 eV, respectively) compared with polymers P1 and P4. This initial study provides insight for the rational design of fully ladder-conjugated isomeric polymers with well-defined structures. Full article
(This article belongs to the Special Issue Conjugated Polymers and Polymer Networks with Unconventional Structural and Functional Features)
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Review

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20 pages, 6396 KiB  
Review
Synthesis and Self-Assembly of Conjugated Block Copolymers
by Lin-Lin Xiao, Xu Zhou, Kan Yue and Zi-Hao Guo
Polymers 2021, 13(1), 110; https://doi.org/10.3390/polym13010110 - 29 Dec 2020
Cited by 15 | Viewed by 5839
Abstract
In the past two decades, conjugated polymers (CPs) have drawn great attention due to their excellent conductivity and charge mobility, rendering them broad applications in organic electronics. Controlling over the morphologies and nanostructures of CPs is very important to improve the performance of [...] Read more.
In the past two decades, conjugated polymers (CPs) have drawn great attention due to their excellent conductivity and charge mobility, rendering them broad applications in organic electronics. Controlling over the morphologies and nanostructures of CPs is very important to improve the performance of CP-based devices, which is still a tremendously difficult task. Conjugated block copolymers (cBCPs), composed of different CP blocks or CP coupled with coiled polymeric blocks, not only maintain the advantages of high conductivity and mobility but also demonstrate features of morphological versatility and tunability. Due to the strong π–π interaction and crystallinity of the conjugated backbones, the self-assembly behaviors of cBCPs are very complicated and largely remain to be explored. In this tutorial review, we first summarize the general synthetic methods for different types of cBCPs. Then, recent studies on the self-assembly behaviors of cBCPs are discussed, with an emphasis on the structural factors that affect the morphologies of cBCPs both in bulk and thin film states. Finally, we briefly provide our outlook on the future research of the self-assembly of cBCPs. Full article
(This article belongs to the Special Issue Conjugated Polymers and Polymer Networks with Unconventional Structural and Functional Features)
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29 pages, 13876 KiB  
Review
Separation of Semiconducting Carbon Nanotubes Using Conjugated Polymer Wrapping
by Jingyi Wang and Ting Lei
Polymers 2020, 12(7), 1548; https://doi.org/10.3390/polym12071548 - 13 Jul 2020
Cited by 36 | Viewed by 6463
Abstract
In the past two decades, single-walled carbon nanotubes (SWNTs) have been explored for electronic applications because of their high charge carrier mobility, low-temperature solution processability and mechanical flexibility. Semiconducting SWNTs (s-SWNTs) are also considered an alternative to traditional silicon-based semiconductors. However, large-scale, as-produced [...] Read more.
In the past two decades, single-walled carbon nanotubes (SWNTs) have been explored for electronic applications because of their high charge carrier mobility, low-temperature solution processability and mechanical flexibility. Semiconducting SWNTs (s-SWNTs) are also considered an alternative to traditional silicon-based semiconductors. However, large-scale, as-produced SWNTs have poor solubility, and they are mixtures of metallic SWNTs (m-SWNTs) and s-SWNTs, which limits their practical applications. Conjugated polymer wrapping is a promising method to disperse and separate s-SWNTs, due to its high selectivity, high separation yield and simplicity of operation. In this review, we summarize the recent progress of the conjugated polymer wrapping method, and discuss possible separation mechanisms for s-SWNTs. We also discuss various parameters that may affect the selectivity and sorting yield. Finally, some electronic applications of polymer-sorted s-SWNTs are introduced. The aim of this review is to provide polymer chemist a basic concept of polymer based SWNT separation, as well as some polymer design strategies, influential factors and potential applications. Full article
(This article belongs to the Special Issue Conjugated Polymers and Polymer Networks with Unconventional Structural and Functional Features)
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