Article
Chemistry, Multidisciplinary
Chu Chu, Yuancheng Qin, Cailing Ni, Jianping Zou
Summary: A series of adjustable Donor-acceptor (D-A) benzothiodiazole-based conjugated polymers were designed and synthesized in this study. The photocatalytic performance of the polymers could be improved by fine-tuning the chemical structure through halogen substitution. The polymers exhibited excellent optoelectronic properties and showed effective catalytic activity in the degradation of dyes and the coupling of benzylamines. The findings provide insights into the design and synthesis of benzothiadiazole-based conjugated polymers as promising organic photocatalysts for solar energy conversion.
CHINESE CHEMICAL LETTERS
(2022)
Article
Biochemistry & Molecular Biology
Marimuthu Karpuraranjith, Yuanfu Chen, Ramadoss Manigandan, Katam Srinivas, Sivamoorthy Rajaboopathi
Summary: The synthesized GO-ZnO@CeO2 nanohybrids demonstrate efficient interfacial contact, suitable band-gap matching, and large surface area, leading to enhanced photocatalytic performance.
Article
Nanoscience & Nanotechnology
Changzhi Han, Liwen Hu, Shenglin Jin, Jiaxin Ma, Jia-Xing Jiang, Chong Zhang
Summary: Conjugated microporous polymer (CMP) photocatalysts with D-p-A-A structure, especially with optimized content of BTDO acceptor, exhibit enhanced photocatalytic activity for solar-driven hydrogen generation due to their electronic structure, reaction sites availability, and the separation of photoexcited charges.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Pengchao Liu, Zhiwei Huang, Xiao He, Junjun Hou, Wei Zheng, Cuijing Liu, Lianshan Li, Zhiyong Tang
Summary: In this study, a conjugated microporous polymer (CMP) Janus membrane with asymmetric structure was prepared for forward osmosis (FO) measurement. The membrane showed fast water transport and suppressed salt diffusion, making it suitable for high flux water treatment and dye removal.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Qiujian Xie, Yumin Yang, Weijie Zhang, Zhu Gao, Xiaofeng Li, Juntao Tang, Chunyue Pan, Guipeng Yu
Summary: A new polarization strategy through molecular geometry optimization was proposed to enhance the charge separation of conjugated microporous polymers (CMPs) as cost-effective photocatalysts in organic transformations. By regulating the polarization of the starting monomers, tailorable porosity, photoelectric properties, and photocatalytic activity of the CMPs can be achieved. The incorporation of polarized linkers introduced an internal electric field, benefiting efficient charge separation and offering new insights into developing high-performance photocatalysts.
Article
Chemistry, Physical
Wei Liu, Kun Zhang, Li Ma, Ruiqi Ning, Zhongxin Chen, Jing Li, Youguo Yan, Tongtong Shang, Zhiyang Lyu, Zhen Li, Keyu Xie, Kian Ping Loh
Summary: This study demonstrates the use of a solution-processable conjugated microporous thermoset (CMT) as an ultrathin ion sieving layer to overcome the issues of polysulfides shuttling and lithium dendrite growth in lithium-sulfur (Li-S) batteries. The CMT layer effectively blocks the shuttling of polysulfides while allowing the passage of Li ions, and it also acts as a buffer zone for uniform distribution of Li ions on the anode surface, resulting in high capacity, low attenuation rate, and long cycling lifespan.
ENERGY STORAGE MATERIALS
(2022)
Article
Engineering, Chemical
Mohammed G. Kotp, Santosh U. Sharma, Jyh-Tsung Lee, Ahmed F. M. EL-Mahdy, Shiao-Wei Kuo
Summary: This study focuses on the design and synthesis of conjugated microporous polymers based on triphenylamine derivatives. The obtained CMPs exhibit excellent adsorption properties and high stability, making them promising candidates for dye adsorbents and supercapacitor electrode materials.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Polymer Science
Noorullah Baig, Suchetha Shetty, Saleh Al-Mousawi, Bassam Alameddine
Summary: The design strategy involves synthesizing conjugated microporous polymers (CMPs) using a versatile copper-catalyzed [4 + 2] cyclobenzannulation reaction. The synthesized polymers exhibit high Brunauer-Emmett-Teller (BET) surface areas, significant pore volumes, and efficient dye adsorption properties, demonstrating their potential for applications in pollutant removal.
Article
Chemistry, Multidisciplinary
Xingxin Shao, Mengyu Liu, Jun Liu, Lixiang Wang
Summary: In this study, an organoboron compound based on N-B <- N units was reported. The resonance nature of the two B, N bonds in the compound was discovered, which contributes to its excellent chemical and photostability. The compound can be used to construct small band gap conjugated polymers. This discovery provides new insights into the design of stable organoboron small molecules and polymers for practical applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Jiazhang Xu, Wei Xie, Chan Yao, Guangjuan Xu, Shuran Zhang, Yanhong Xu
Summary: Research on the adsorption of iodine by porous organic polymers has led to the successful preparation of two new thiol-linked conjugated microporous polymers. These polymers exhibit improved capability in capturing iodine by introducing electron-rich groups, and have potential importance in industrial applications for water treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Yuncan Jia, Wenbin Gong, Xueying Fan, Shang Chen, Xiaodong Meng, Yongqiang Meng, Ji Zhou, Yawen Cao, Song Hong, Lirong Zheng, Zhao Wang, Christopher W. Bielawski, Jianxin Geng
Summary: Conjugated microporous polymers (CMPs) containing Co single-atom catalysts (Co SACs) and being grafted to multi-walled carbon nanotubes (MWNTs) have been synthesized and investigated for their potential use in lithium-sulfur (Li-S) batteries. The composite material, labeled as Co-CMP-MWNTs, shows excellent performance in terms of specific capacity, rate capability, and cycling stability. The results demonstrate the potential of Co SACs to enhance the cathode reaction kinetics in Li-S batteries, and the methodology described may have applications in other energy conversion technologies.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Shiyuan Zhou, Xiaobo Luo, Yan Zhang, Yuxi Liu, Xin Wang, Xiaoqiong Hao, Ye Zhang, Danfeng Wang, Peiyang Gu, Guangfeng Liu
Summary: LDPO-2, a porphyrin-based conjugated microporous polymer photocatalyst, was synthesized through post-modification approach to enhance hydrophilicity and visible light absorption ability. It achieved a removal efficiency of >99.5% for BPA within 12 minutes of visible light exposure, and its photocatalytic mechanism and potential degradation pathways were well investigated. LDPO-2 also demonstrated impressive removal efficiency against BPA analogues, indicating its practical applications in real-water treatment scenarios.
CHEMICAL COMMUNICATIONS
(2023)
Article
Energy & Fuels
Wei Wu, Chunhui Dai, Miaomiao Wu, Yong Chen, Chao Zeng, Fei Li
Summary: Herein, the authors report a method for selective CO2 photoreduction into CH4 and CO with red light using conjugated microporous polymers (CMPs) at room temperature. By incorporating electron-rich and electron-deficient derivatives, the resulting polymers show broad light absorption and narrow bandgaps. Among them, P3 exhibits the best visible-light reduction activity, achieving high evolution rates of CH4 and CO under red light irradiation and nearly 100% reaction selectivity. The improved performance of P3 can be attributed to its high absorption toward CO2 and improved charge transfer.
Article
Engineering, Environmental
Ahmed M. Elewa, Ahmed F. M. EL-Mahdy, Mohamed Hammad Elsayed, Mohamed Gamal Mohamed, Shiao-Wei Kuo, Ho-Hsiu Chou
Summary: The study reports the synthesis of triazine-based conjugated micropores polymers photocatalysts at low temperature with excellent hydrogen production performance and potential stability issues. Through a novel sulfur-doping method, the photocatalytic stability of the polymers can be enhanced, offering a new approach to overcome the low stability issue.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Weitao Gong, Kaixun Dong, Lu Liu, Mehdi Hassan, Guiling Ning
Summary: The incorporation of organic chromophores into CMPs offers a promising solution for developing recyclable photocatalysts, overcoming the limitations of homogeneous organic dye-based photocatalysts. This study successfully fabricated two new CMPs with beta-diketone boron difluoride dyes as key linkers, demonstrating superior photocatalytic performance in aerobic oxidative organic transformations. The use of boron-dye containing CMPs as metal-free photocatalysts represents a significant advancement in the field of catalysis.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Polymer Science
Na Yang, Yanqing Gu, Yilin Shan, Chengcheng Tian, Lan Yang, Hao Jiang, Honglai Liu, Xiang Zhu, Sheng Dai
Summary: For the first time, a dual rate-modulation approach was used to create crystalline covalent triazine frameworks. By regulating the condensation rate, the growth of the frameworks was controlled, leading to tunable crystallinities and porosities. The resulting frameworks exhibited exceptional sodium storage due to the presence of rich redox-active triazine linkages.
Review
Chemistry, Multidisciplinary
Ruixue Sun, Bien Tan
Summary: This review provides recent advances in the preparation of covalent triazine frameworks (CTFs) and mainly focuses on their photocatalytic applications. It presents a comprehensive and systematic overview of the synthetic methods, strategies for enhancing the crystallinity, and the photocatalytic performance of CTFs. The review also discusses the perspectives and challenges in fabricating high crystalline CTFs and designing CTFs with excellent photocatalytic performance, inspiring the development of CTF materials in photocatalytic applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Polymer Science
Shoukun Yang, Xiaoyan Wang, Bien Tan
Summary: Exploring the effect of structural rigidity on porosity is crucial for designing hyper-cross-linked polymers. In this study, novel polymers with fine-tuned rigidity were constructed using a low-cost solvent knitting method. The porosity of these polymers is consistent with the rigidity of the building blocks, resulting in significantly enhanced BET surface areas. The best performances were achieved by HCP-SBF and HCP-TPM, showing high methane adsorption capacities and potential for onboard methane storage.
Article
Chemistry, Multidisciplinary
Zhen Zhan, Junchen Yu, Shuqing Li, Xiaoxuan Yi, Jingyu Wang, Shaolei Wang, Bien Tan
Summary: A new bottom-up strategy is proposed to construct SiO2@HCPs directly from aromatic monomers, which can improve the collapse issue in ultrathin carbon spheres and tune the wall thickness and surface area. Therefore, this method holds significant potential for applications in chemical catalysis, drug delivery, and electrocatalysis.
Article
Nanoscience & Nanotechnology
Ningning Liu, Hui Ma, Ruixue Sun, Qing-Pu Zhang, Bien Tan, Chun Zhang
Summary: A three-dimensional rigid six-connected porous triptycene network was successfully synthesized using triptycenes as connectors and Tro''ger's base as linkers. The network exhibits a high surface area (1528m² g⁻¹), nitrogen-enriched groups, and superior thermal stability, leading to a high CO₂ uptake of 22.3 wt % (273 K, 1 bar) and excellent iodine vapor adsorption of 240 wt %.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Wei-Wei Fang, Gui-Yu Yang, Zi-Hui Fan, Zi-Chao Chen, Xun-Liang Hu, Zhen Zhan, Irshad Hussain, Yang Lu, Tao He, Bi-En Tan
Summary: This study develops a phosphine-based conjugated hypercrosslinked polymer (PPh3-CHCP) photocatalyst for efficient large-scale photoinduced copper-catalyzed atom transfer radical polymerization (Cu-ATRP). The photocatalyst enables near-quantitative conversions of monomers including acrylates and methyl acrylates under a wide range of radiations or sunlight directly. It can be easily recycled and shows great potential for industrial applications.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Huang Ouyang, Kunpeng Song, Irshad Hussain, Bien Tan
Summary: CO2 cycloaddition with epoxides is an important process for CO2 conversion to generate cyclic carbonates. However, the catalytic efficiency of porous organic polymers (POPs) for this process is typically low and requires severe conditions or prolonged reaction time. In this study, amine-impregnated porous organic polymers (HCP-TPP-Co-EDA-10 and HCP-TPP-Co-PEI-5) were developed to enhance the interaction with CO2 and improve catalytic efficiency. These catalysts exhibited strong binding affinity with CO2 and high catalytic yield under mild conditions. The turnover number (TON) and turnover frequency (TOF) achieved were among the highest reported so far. Additionally, the catalysts showed excellent recyclability and stability for CO2 conversion. The use of amines as chemisorption sites for CO2 provides a simple strategy for designing highly efficient functionalized hyper-cross-linked polymers (HCPs) for CO2 capture and chemical conversion.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yantong Guo, Xunliang Hu, Ruixue Sun, Xiaoyan Wang, Bien Tan
Summary: Photocatalytic hydrogen evolution through water splitting using covalent triazine frameworks (CTFs) offers a promising route for solar energy conversion. However, the typical powder form of CTF-based photocatalysts poses challenges in recycling and scale-up applications. To address this limitation, CTF films were developed by in-situ growth polycondensation on glass substrates, demonstrating exceptional photocatalytic activity, stability, and recyclability. These films show a high hydrogen evolution rate and hold potential for green energy conversion and photocatalytic devices.
Article
Materials Science, Multidisciplinary
Na Yang, Xiang Zhu, Guofeng Wang, Lulu Zhou, Xiaoxiao Zhu, Jiaqi Pan, Wei Yu, Chungu Xia, Chengcheng Tian
Summary: The synthesis of heteroatom-doped porous carbons through mechanochemical methods shows promise for efficient electrochemical production of hydrogen peroxide. By converting small organic molecules into metal-free heteroatom-doped mesoporous carbons using a novel pyrolysis-free ball-milling technique, a wide variety of heteroatoms can be introduced into the resulting carbon materials, resulting in high H2O2 selectivity and production rates. These findings open up new possibilities for the development of mesoporous carbons for electrocatalytic applications.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Xin Tao, Zhen Wang, Qing-Pu Zhang, Ningning Liu, Yu-Ling Sun, Ruo-Xin Niu, Ruixue Sun, Xiaoyan Wang, Bien Tan, Chun Zhang
Summary: In this study, COF-NHG nanohydrogels were successfully synthesized through in situ atom-transfer radical polymerization on the scaffold of COFs. The obtained nanohydrogels exhibited temperature-sensitive sol-gel phase transition and the ability to control their size. These findings provide new opportunities for the application of COFs in water.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Polymer Science
Shuqing Li, Zhen Zhan, Xiaoyan Wang, Bien Tan
Summary: CO2 cycloaddition conversion is a promising strategy for converting CO2 into high-value-added products. This study reports a method for synthesizing HCPSSs by controlling the monomer feeding rate, which improves the yield of CO2 cycloaddition conversion.
Article
Engineering, Chemical
Lan Yang, Yanyan He, Na Yang, Honglai Liu, Xiang Zhu
Summary: In this study, a rational modulation of active sites within COFs was reported to enhance the iodine capture performance. The incorporation of electron-rich ethynyl moieties and rich basic triazine sites led to a significant increase in iodine adsorption capacity, offering new possibilities for the design and synthesis of novel COF-based adsorbents for separation applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Na Yang, Lan Yang, Xiang Zhu, Peiqing Zhao, Honglai Liu, Chungu Xia, Sheng Dai, Chengcheng Tian
Summary: Highly crystalline covalent triazine frameworks (CTFs) were synthesized for the first time using a solvent-and catalyst-free approach. The CTFs were then transformed into isolated single-atom catalysts (SACs) through a new condensation reaction. These SACs exhibited efficient performance in electrochemical carbon dioxide reduction.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Xueqing Wang, Manying Liu, Xiaoyan Wang, Bien Tan
Summary: In this study, a strategy for synthesizing highly crystalline imine COFs using a dropwise monomer feeding method in an open system is reported. The synthesis does not require additional templates or modulators. By controlling the feeding rates of the monomer, reversibility of imine formation, defect self-healing, and error correction can be improved.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Liangxuan Xu, Yue Hu, Xiang Zhu, Lin He, Qing Wu, Chen Li, Chungu Xia, Chao Liu
Summary: In this study, a novel nitrile synthesis method was reported, which efficiently converts functionalized aldehydes to nitriles within 5 minutes at room temperature by utilizing a stable and robust aminoazanium reagent. The stability and speed of this method make the CHO group equivalent to CN in organic synthesis, and it can also be used for direct cyanation of various aldehyde precursors through a cyanide-free process. The developed method not only provides a rapid access to a wide range of ligands and material precursors, but also offers a potential application for the late-stage modification of complex bioactive molecules.
ORGANIC CHEMISTRY FRONTIERS
(2022)
