Review
Polymer Science
Lei Wang, Hangxun Xu
Summary: This article comprehensively summarizes the recent progress in the development of two-dimensional conjugated polymer frameworks (2D CPFs) for solar fuel generation from water, including the basic principles and structure-property relationships. The article also highlights the applications of 2D CPFs in photoelectrochemical energy conversion and discusses the remaining challenges and research opportunities for the future development.
PROGRESS IN POLYMER SCIENCE
(2023)
Review
Polymer Science
Chao Wang, Feng Liu, Qiao-Mei Chen, Cheng-Yi Xiao, Yong-Gang Wu, Wei-Wei Li
Summary: Benzothiadiazole (BT) is an electron-deficient unit that can be used to construct conjugated polymers for organic solar cells, with significant progress achieved in recent years.
CHINESE JOURNAL OF POLYMER SCIENCE
(2021)
Article
Chemistry, Applied
Rong-Xian Jhang, Guan-Lin Chen, Rathinam Raja, Po-Tuan Chen, Michitoshi Hayashi, Syang-Peng Rwei, Shan-hui Hsu, Leeyih Wang
Summary: Developing highly planar semiconducting polymers is crucial for improving the performance of polymer solar cells. Two novel low-bandgap donor-acceptor copolymers, P1-3T and P2-3T2F, were synthesized with P2-3T2F showing better planar backbone conformation and higher power conversion efficiency.
Article
Chemistry, Physical
Qiang Fu, Zhiyuan Xu, Xingchen Tang, Tingting Liu, Xiyue Dong, Xiaodan Zhang, Nan Zheng, Zengqi Xie, Yongsheng Liu
Summary: In this study, a solution-processable two-dimensional polymer HTM called 2DP-TDB with extended pi-electron delocalization was successfully developed for perovskite solar cells. The PSCs incorporating 2DP-TDB as dopant-free HTM showed a high efficiency of 22.17% after further optimization of the perovskite film, demonstrating the potential of 2D conjugated polymer HTMs for high-efficiency and stable PSCs.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Qiang Bei, Bei Zhang, Kaifeng Wang, Shiming Zhang, Guichuan Xing, Clement Cabanetos
Summary: The power conversion efficiency (PCE) of organic solar cells (OSCs) has reached 20% in recent years, thanks to the advantages of organic photoactive materials. Benzothiadiazole (BT) has attracted significant research attention as a building block of OSCs. OSCs based on BT structure have shown diversity, and the increasing PCE values indicate a promising future for OSCs. This review analyzes the progress made in the last decades, focusing on effective BT small-molecules and BT polymers for OSCs. The structure-property relationships, donor-acceptor matching criteria, and morphology control approaches are discussed. The remaining challenges and a personal perspective on the future advancement of OSCs are summarized.
CHINESE CHEMICAL LETTERS
(2024)
Article
Electrochemistry
Sultan Taskaya Aslan, Duygu Cevher, Eda Bolayir, Gonul Hizalan Ozsoy, Yasemin Arslan Udum, Erol Yildirim, Levent Toppare, Ali Cirpan
Summary: A series of alternating conjugated copolymers containing selenophene modified benzodithiophene and fluorine bearing benzothiadiazole were synthesized and their electrochemical, spectroelectrochemical, and photovoltaic behaviors were investigated. Computational studies were used to understand the structural and electronic properties affected by fluorine substitution, which was compared with experimental results. The influence of fluorine substitution on the electronic structure of polymers and the improved photovoltaic performance were explored in this study.
ELECTROCHIMICA ACTA
(2021)
Article
Energy & Fuels
Zhengkun Du, Xichang Bao, Christoffer Pajbjerg Andersen, Charlotte Bogild Didriksen, Junyi Wang, Meng-Chang Lin, Zhong Cao, Donghong Yu
Summary: The study shows that molecular tuning of side chains on the BT unit affects the energy levels and intermolecular packing of the resulting polymers by modulating their electron affinity and molecular coplanarity. Among the three copolymers, PB-BTf blended with PC71BM demonstrates the best photovoltaic performance, while PB-BTPf with fluorophenyl groups exhibits higher open-circuit voltage.
Article
Chemistry, Multidisciplinary
Zitang Wei, Kang Wang, Wenchao Zhao, Yao Gao, Qixuan Hu, Ke Chen, Letian Dou
Summary: By synthesizing and incorporating a novel selenophene-containing organic ligand STm into a Sn(ii)-based two-dimensional perovskite, the band offset can be fine-tuned, resulting in high performance and enhanced operational stability in field-effect transistor and light-emitting diode devices.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Jun Zhu, Shaofei Wu, Xudong Hou, Jishan Wu
Summary: A novel 1,6-anthrazoline (AZ)-linked crystalline 2D polymer was successfully prepared via acid mediated Friedlander synthesis, with its structure and crystallinity confirmed through experiments and simulation. The dynamic feature of the synthesis process played a crucial role in the favorable formation of the polymer, providing a rational way to access kinetically stable 2D crystalline polymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Gang Xiang, Xiansen He, Yuxia Liu, Qing Huang, Wei Huang, Cuizhong Zhang, Jinyun Peng
Summary: In this study, a novel CMP-rGO material was synthesized and used to construct a sensitive PEC sensor for detecting LDA. The sensor exhibited linear response and low detection limit under optimal experimental conditions, and showed good repeatability, stability, and selectivity. The sensor was successfully applied for detecting LDA in real samples.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Shu-Biao Xia, Yu-Qing Cai, Li-Feng Yao, Jun-You Shi, Fei-Xiang Cheng, Jian-Jun Liu, Zhen-jiang He, Jun-Chao Zheng
Summary: The feasibility of various characteristics of a two-dimensional covalent organic polymer offers exclusive alternative electrode materials for lithium storage. In this work, a nitrogen-rich two-dimensional covalent quinazoline polymer was designed and developed, showing excellent electrochemical performance as an anode for lithium-ion batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Polymer Science
Zhujun Gao, Fei Zhao, Shouli Ming, Yan Zhang, Jinsheng Zhao
Summary: Two donor-acceptor (D-A) type conjugated porous polymers (CPPs), P(TPA-TBTh) and P(TPA-F-TBTh), were synthesized on ITO glass electrodes through Stille coupling reaction under solvothermal conditions. The CPPs exhibited ambipolar properties in electrochromic switching and showed different morphologies. The introduction of fluorine atoms onto the polymer skeleton reduced the energy levels and band gap, resulting in a lower band gap for P(TPA-F-TBTh). Additionally, the non-fluorinated and di-fluorinated CPPs exhibited different electrochromic kinetic properties. These D-A type CPPs provide new designs for multicolor electrochromic materials with ambipolar properties and rare green reduction states.
Article
Chemistry, Organic
Seihou Jinnai, Ayumi Oi, Takuji Seo, Taichi Moriyama, Ryunosuke Minami, Suguru Higashida, Yutaka Ie
Summary: By incorporating cyano-substituted naphthobisthiadiazole units into π-conjugated systems, the researchers synthesized an electron-accepting compound CNNTz-TR, which showed a low-lying energy level due to the presence of cyano groups. The results demonstrated that embedding the CNNTz unit into the π-conjugated backbone is an effective strategy for designing electron-accepting semiconducting materials with improved performance in organic solar cells.
SYNTHESIS-STUTTGART
(2021)
Article
Materials Science, Multidisciplinary
Yuanfeng Li, Difei Zhang, Zhenqiang Huang, Tianyang Zhang, Nan Zheng, Feng Peng, Lei Ying, Fei Huang
Summary: This study focuses on the design and synthesis of two naphtho[1,2-c:5,6-c ']bis([1,2,5]thiadiazole) derivatives as non-fullerene acceptors for organic solar cells. The effect of halogen substitution on the properties of the derivatives was investigated, and PTzBI-dF was used as the electron-donating polymer. It was found that the film based on the chlorinated derivative showed a more favorable morphology and slightly higher power conversion efficiency.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Chao Wang, Dongdong Xia, Fan Yang, Junyu Li, Yonggang Wu, Weiwei Li
Summary: Double-cable conjugated polymers have been successfully applied in single-component organic solar cells, with the chemical structures and nanophase separation being key factors for enhancing photovoltaic performance. Introducing a benzothiadiazole unit improved efficiency, with thiophene-based polymers showing higher electron mobilities compared to thienothiophene-containing polymers. The study suggests promising applications for high-performance double-cable conjugated polymers in SCOSCs.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Environmental
Zhenye Li, Feng Peng, Huilei Quan, Xitang Qian, Lei Ying, Yong Cao
Summary: This study aimed to boost the thermal stability of PSCs based on Y-series acceptors by polymerizing Y5-F-Br to obtain PFA1. The excellent film stability of PFA1 effectively suppressed thermally induced phase separation, achieving over 98% thermal stability at 100 degrees C for over 1 year. The use of long-chain acceptor for improving thermal stability was also confirmed in other commonly used PSCs, suggesting polymerizing non-fullerene small molecule acceptors is an effective and universal strategy for enhancing PSCs' thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Crystallography
Sijing Zhong, Boon Kar Yap, Zhiming Zhong, Lei Ying
Summary: Non-fullerene acceptors, specifically Y6-based ones, have shown great potential in achieving high efficiency in organic solar cells, with efforts being made to improve their performance through structural modifications and device engineering. Machine learning could play a key role in designing multifunctional organic devices with desired performances in the future.
Article
Chemistry, Multidisciplinary
Difei Zhang, Yuanfeng Li, Meijing Li, Wenkai Zhong, Thomas Heumuller, Ning Li, Lei Ying, Christoph J. Brabec, Fei Huang
Summary: The incorporation of solid additives in organic photovoltaics can improve device performance and stability by adjusting molecular structure. By introducing a specific compound, processing methods can be simplified and batch differences can be reduced, providing guidelines for commercial applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xitang Qian, Gaoyang Wang, Zhenye Li, Lei Ying, Yong Cao
Summary: In this study, the introduction of a solvent additive, 1,8-diiodooctane (DIO), was found to regulate the performance of all-polymer solar cells (all-PSCs) and enable the fabrication of large-area all-PSCs. The results demonstrate that the device with DIO only experienced a 3.3% decrease in power conversion efficiency (PCE) when the device area expanded to 0.5 cm(2), which is the lowest attenuation value achieved for 0.5-1 cm(2) all-PSCs to date.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Physical
Xiaozhe Su, Zhenqiang Huang, Zhiming Zhong, Feng Peng, Ting Guo, Liwen Hu, Lei Ying
Summary: A solution-processable molecule, S-F4SO, containing enantiomerically chiral side-chains, was designed and showed weak circular dichroism (CD) and insignificant circularly polarized photoluminescence (CPPL) signal. The chiral perturbation strategy effectively enhanced the CD and CPPL signal when S-F4SO was blended with an achiral polymer, PFO. The resulting circularly polarized light-emitting dioxides exhibited deep blue circularly polarized electroluminescence with good spectral stability.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Zhiming Zhong, Zhaomiyi Zeng, Zhenqiang Huang, Feng Peng, Penghui He, Linfeng Lan, Lei Ying
Summary: This work investigates the effect of charge injection barrier on the dark current density of organic photodetectors. It is found that increasing fluorine substituents in the end groups of the non-fullerene acceptor reduces both the electron and hole injection barriers, leading to an increase in dark current.
ORGANIC ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Sijing Zhong, Han Chen, Jinglin Yi, Tao Yang, Ziqi Gan, Xiaozhe Su, Meijing Li, Zhiming Zhong, Feng Peng, Lei Ying
Summary: This manuscript presents the design and synthesis of a new n-type semiconductor TPBT-OR by introducing alkoxythiophene into Y5. The experimental results demonstrate that TPBT-OR exhibits good spectral response performance in the near-infrared wavelength range.
ORGANIC ELECTRONICS
(2022)
Article
Engineering, Environmental
Zhenye Li, Yingfang Liang, Lin Chen, Jian Chen, Feng Peng, Lei Ying
Summary: The development of polymerized small molecule acceptors (PSMA) has led to breakthroughs in all-polymer solar cells (all-PSCs), but the use of halogenated solvents is harmful to the environment and human health. To address this, PZT was introduced into a high-efficiency all-PSCs system to improve solubility and stability. The doping of PZT significantly improved the stability of all-PSCs and demonstrated the compatibility for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Huilei Quan, Zhiming Zhong, Tianyu Hao, Kang An, Wenkai Zhong, Cheng Wang, Feng Liu, Lei Ying, Fei Huang
Summary: Sequential casting (SC) can improve the film morphology of donor:acceptor blend layers and enhance the performance of organic photodetectors (OPDs). In this study, a refined fibrillar multiphase morphology is achieved by SC in an NT812:IEICO-4F blend film, leading to improved charge generation and collection, reduced trap states, and enhanced charge block capability. As a result, the OPD exhibits high external quantum efficiency and low dark/noise current, achieving a maximum special detectivity of 5 x 10(13) Jones at 860 nm. Similar enhancements are observed in OPD devices based on other blend systems with similar fibrillar refinement, providing guidelines for film structure manipulation towards high OPD performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yue Yu, Pei Xu, Yuyu Pan, Xianfeng Qiao, Lei Ying, Dehua Hu, Dongge Ma, Yuguang Ma
Summary: In this study, a new blue hot exciton material, CPPCN, was designed and synthesized, which has multiple high-lying triplet states near the lowest singlet excited state. The ultrafast RISC process facilitated by these high energy triplet states allows the non-doped blue OLED based on CPPCN to achieve high external quantum efficiency and suppressed efficiency roll-off.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Polymer Science
Zhi-Ming Zhong, Feng Peng, Lei Ying, Zhen-Qiang Huang, Wen-Kai Zhong, Gang Yu, Yong Cao, Fei Huang
Summary: Through introducing larger heteroatom, regio-regular backbone, and extended branching position of the side-chain, we developed polymer semiconductors (PPCPD) with a narrow band-gap to construct the photosensing layer of thin-film photodiodes and image arrays. The resulting organic photodiodes exhibited a spectral response ranging from near ultraviolet to short-wavelength infrared, achieving a competitive performance with inorganic crystalline detectors in the 900-1200 nm range. The high photodetectivity and quantum efficiency of the amorphous/nanocrystalline thin-film photodiode enabled high pixel-density image arrays without pixel-level patterning in the sensing layer, allowing for high pixel-density short-wavelength infrared imaging at room temperature.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Biomaterials
Liwen Hu, Linrui Shi, Tianze Hu, Peiling Chen, Ting Guo, Chunxiao Wang, Renqiang Yang, Lei Ying
Summary: By manipulating molecular motion, donor-acceptor type conjugated polymers with high extinction coefficient and excellent photothermal conversion ability have been designed and synthesized. These polymers can serve as efficient photothermal agents, achieving complete tumor remission in vivo.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Polymer Science
Hong Qiu, Zhi-ming Zhong, Mei-jing Li, Lei Ying, Gang Yu, Pei Huang, Yong Cao
Summary: In this study, a wide-bandgap polymer was successfully synthesized and combined with a non-fullerene acceptor to fabricate organic photodetectors with an inverted device structure. Optimizing the film thickness of the active layer significantly reduced the dark current density while maintaining a high external quantum efficiency, resulting in improved detectivity.
ACTA POLYMERICA SINICA
(2022)
Article
Materials Science, Multidisciplinary
Xinrui Miao, Zhengkai Cai, Hengqi Zou, Jinxing Li, Songyao Zhang, Lei Ying, Wenli Deng
Summary: This study systematically investigated the impact of introducing phenyl and bromine substituents on AIE materials, and found that different positions of bromine substituents can lead to diverse intermolecular interactions, with intermolecular Br-Br bonds playing a dominant role in fluorescence efficiency. Furthermore, a comprehensive exploration of MC and AIE properties contributes to the development of materials with higher luminous efficiency.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Zhenye Li, Feng Peng, Xitang Qian, Jingwen Li, Zhiming Zhong, Lei Ying, Hongbin Wu, Fei Huang, Yong Cao
Summary: The researchers successfully regulated the bulk-heterojunction (BHJ) morphology of all-polymer solar cells (all-PSCs) by selecting solvents and optimized the morphology evolution, resulting in improved power conversion efficiency.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
