Article
Polymer Science
Tzu-Ling Yang, Jhu-You Chen, Shiao-Wei Kuo, Chen-Tsyr Lo, Ahmed F. M. El-Mahdy
Summary: In this research, two novel hydroxy-functionalized COFs were synthesized through Schiff-base polycondensations. These COFs exhibited high surface areas and excellent stability, making them suitable electrode materials for supercapacitor applications.
Article
Engineering, Environmental
Ruiqi Liu, Lijin Huang, Hui Tao, Xiaoqing Lei, Qin Shuai
Summary: Various functionalized beta-ketoenamine COFs were synthesized and characterized to study the effect of microenvironment on sulfamerazine capture. It was found that the sulfonic acid group enhances the affinity of COFs to sulfamerazine, while the amino group has the opposite effect. The sulfonic acid functionalized COF (TpPa-SO3H) was selected for detailed sulfamerazine adsorption study.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Chemistry, Inorganic & Nuclear
Jesus A. Martin-Illan, David Rodriguez-San-Miguel, Felix Zamora
Summary: This review summarizes the development timeline of Covalent Organic Frameworks (COFs) and the necessary targets for real-world applications. It collects aspects of COF formation, strategies for chemical stability, and modulation of structural characteristics. The review also includes elements concerning material processability, which are crucial for various applications of COFs. The summary section provides headlines for a closer approach to real applications.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Energy & Fuels
H. Shanavaz, B. P. Prasanna, S. Archana, M. K. Prashanth, Fahad A. Alharthi, Rui Zhou, M. S. Raghu, Byong-Hun Jeon, K. Yogesh
Summary: Covalent organic frameworks (COFs) are important materials in energy storage systems due to their uniform porosity and versatile functionality. This study focuses on the fabrication and characterization of a triazine-based COF and its decoration with Niobium to form Nb@COF. The results show successful doping of Nb into the COF and improved electrochemical performance in Nb@COF. The stability, specific capacitance, and reliability of Nb@COF indicate its potential application in energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Energy & Fuels
H. H. Hegazy, Siva Sankar Sana, Tholkappiyan Ramachandran, Yedluri Anil Kumar, Dasha Kumar Kulurumotlakatla, Hisham S. M. Abd-Rabboh, Seong Cheol Kim
Summary: Covalent organic frameworks are crystalline porous materials formed by covalent bonding and have various molecular structures. They are recognized as essential materials in technology due to their advantages such as large surface area and porosity. However, their low specific capacitance and limited electrical conductivity hinder their widespread use in energy storage systems.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Xin Zhong, Qian Ling, Peiling Kuang, Baowei Hu
Summary: In this study, a series of isostructural beta-ketoenamine COFs with different functional groups were synthesized for photocatalytic U(VI) reduction. It was found that the microenvironment of pore surface and the photoelectric properties of functional groups played crucial roles in determining the performance of COFs as photocatalysts for uranium extraction and reduction under visible light.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Kanghui Xiong, Yuexin Wang, Fulin Zhang, Xia Li, Xianjun Lang
Summary: This study synthesized three beta-ketoenamine COFs with different linker lengths and compared their photocatalytic activities. The results showed that the linker length plays an important role in the photocatalytic performance of COFs, and a moderate linker length can enhance the photocatalytic conversion rate.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Energy & Fuels
H. Shanavaz, Niranjan Kannanugu, Deepak Kasai, K. Yogesh Kumar, M. S. Raghu, M. K. Prashanth, Moonis Ali Khan, Byong-Hun Jeon, E. Linul
Summary: Covalent organic frameworks (COFs) are a new family of covalently connected crystalline organic polymers, with elastic molecular structure, highly ordered structures, and persistent porosity. They can be synthesized using polycondensation reactions and offer a highly stable molecular foundation for intricate structural designs and specialized functional advancements. However, their poor electrochemical performance and low electrical conductivity hinder their practical applications in electrochemical energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Ritika Jaryal, Sadhika Khullar, Rakesh Kumar
Summary: Nuclear energy dominates the global primary energy mix but releases volatile nuclear wastes. The efficient capture of volatile radioiodine has attracted worldwide attention for its severe health and environmental effects. Researchers have reported a new benzothiazole-based covalent organic framework (COF-3) with high iodine adsorption capacity, highlighting the importance of electron rich heteroatoms and other factors such as surface area and pore volume in iodine adsorption.
JOURNAL OF CLUSTER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Chang He, Duan-Hui Si, Yuan-Biao Huang, Rong Cao
Summary: This study reports the first stable CO2-masked N-heterocyclic carbenes (NHCs) grafted on a porous crystalline covalent organic framework (COF), and demonstrates their superior catalytic performances in hydrosilylation and N-formylation reactions. The NHC sites can be easily recycled and reused while maintaining excellent catalytic activity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Meng Lu, Mi Zhang, Chun-Guang Liu, Jiang Liu, Lin-Jie Shang, Min Wang, Jia-Nan Chang, Shun-Li Li, Ya-Qian Lan
Summary: This study designed a series of stable metallophthalocyanine COFs as novel single-site catalysts with outstanding activity and selectivity for electrocatalytic CO2 reduction. Coupled with light, these COFs showed improved efficiency and potential for applications in the field of electrocatalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Wei Gong, Chunyu Liu, Hongliang Shi, Maoxing Yin, Weijun Li, Qingbao Song, Yujie Dong, Cheng Zhang
Summary: Covalent organic frameworks (COFs) are promising candidates in fluorescence sensing due to their good chemical stability and abundant pores. In this study, a 2D COF named CZ-DHZ-COF was synthesized and it exhibited bright cyan fluorescence in the solid state. CZ-DHZ-COF showed rapid fluorescence response to acid vapor and specific recognition to Fe(iii) ions. Furthermore, a CZ-DHZ-COF and chitosan composite aerogel (CZCA) was prepared, which exhibited improved detection ability and faster response speed to acid vapor compared to the as-synthesized CZ-DHZ-COF.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Review
Polymer Science
Tiago F. Machado, M. Elisa Silva Serra, Dina Murtinho, Artur J. M. Valente, Mu Naushad
Summary: Covalent Organic Frameworks are a new class of microporous polymers with unprecedented properties, offering promising solutions in a vast number of fields. By strategically combining monomers with specific structures and properties, COF materials can be fine-tuned and controlled, allowing for post-synthetic functionalization.
Article
Chemistry, Multidisciplinary
Hongkun Liu, Wenke Guan, Changyong Zhao, Zejuan Ni, Chuanyu Jin, Hui Zhao, Limin Zhao
Summary: A series of Tp-based COFs with different link units were obtained through Schiff base reaction, exhibiting high crystallinity and excellent thermal stability. Electrochemical analysis and DFT calculation were used to identify the redox active sites based on similar structure. The obtained a-COFs, with conjugated structures containing redox-active triphenylamine groups, showed a specific capacitance of 115 F dot g(-1) in 1 M H2SO4 at 0.1 A dot g(-1) and retained 70% capacitive after 1000 cycles, providing a new routine for designing new COFs electrode materials.
Article
Engineering, Environmental
Shilpa Patial, Pankaj Raizada, Aftab Aslam Parwaz Khan, Arachana Singh, Quyet Van Le, Van Huy Nguyen, Rangabhashiyam Selvasembian, Chaudhery Mustansar Hussain, Pardeep Singh
Summary: This article introduces the importance and applications of covalent-organic frameworks (COFs) in green catalysis, focusing on their combination with other materials and synthetic routes. It also emphasizes the importance of green reaction parameters and discusses the challenges and prospects for future development.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Wei-Ting Du, Tzu-Ling Ma, Shiao-Wei Kuo
Summary: In this study, a monomer called N-(2,6-dimethylhydroxyphenyl)maleimide (DMHPMI) was synthesized and reacted with styrene through copolymerization to prepare a copolymer called poly(styrene-alt-dimethylhydroxyphenylmaleimide) [poly(S-alt-DMHPMI)]. The structure of the copolymer was confirmed using FTIR spectroscopy, 1H and 13C NMR spectroscopy, and MALDI-TOF mass spectrometry. The Tg behavior of the copolymer blends with different homopolymers was studied using DSC, and the results showed that the interactions between the copolymers and the homopolymers varied based on the chemical structure of the copolymers and the steric hindrance of the monomer units.
Article
Polymer Science
Maha Mohamed Samy, Mohamed Gamal Mohamed, Santosh U. Sharma, Swetha Chaganti, Tharwat Hassan Mansoure, Jyh-Tsung Lee, Tao Chen, Shiao-Wei Kuo
Summary: In this research, two triphenylamine (TPA)-linked conjugated microporous polymers (CMPs), TPATAB and TPA-TBN, were synthesized through Suzuki couplings. These CMPs, with large surface areas and excellent thermal stability, could serve as electrode materials in supercapacitor (SC) devices. The TPA-TAB CMP exhibited ultrahigh specific capacitance (684 F g-1 at 0.5 A g-1) and long-term stability, with a capacitance retention of 99.5% after 5000 cycles (at 10 A g-1) in a three-electrode SC. Moreover, a two-electrode symmetric SC incorporating TPA-TAB CMP showed a capacitance of 117 F g-1 and a high retention of 98% after 5000 cycles at 10 A g-1. These promising performances were achieved by utilizing redox-active TPA units and a large BET surface area (490 m2 g-1). Therefore, these TPA-CMPs show potential for use in charge and energy storage applications.
Article
Chemistry, Multidisciplinary
Shan Li, Peng Xiao, Weiqing Yang, Chang Zhang, Jincui Gu, Shiao-Wei Kuo, Tao Chen
Summary: Solar-enabled thermal management faces challenges such as temperature fluctuations, high cost, complex fabrication, and limited energy efficiency. This study proposes a superhydrophobic and photothermal nanostructured material that can adapt to curved surfaces, efficiently convert solar energy to heat, and maintain stable temperature in high moisture environments.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ting-Chih Chou, Wei-Cheng Chen, Mohamed Gamal Mohamed, Yen-Chi Huang, Shiao-Wei Kuo
Summary: Anionic living polymerization was used to prepare a diblock copolymer of poly(styrene-b-4-vinyl pyridine) (PS-b-P4VP), and a phenolic resin with a double-decker silsesquioxane (DDSQ) cage structure was used to form a phenolic/DDSQ hybrid (PDDSQ-30 with 30 wt.% DDSQ). Strong intermolecular hydrogen bonding was confirmed between the hydroxyl (OH) groups of PDDSQ hybrid and the pyridine group of the P4VP block in PDDSQ-30/PS-b-P4VP blends based on Fourier transform infrared spectroscopy analyses. The self-assembled structures of these blends were revealed by small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM), showing increased d-spacing with higher PDDSQ concentration. After removal of the PS-b-P4VP template, long-range ordered mesoporous PDDSQ hybrids with high surface area and pore volume were obtained, displaying cylindrical and spherical structures suitable for supercapacitor applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Polymer Science
Jing Han Wang, Taher A. A. Gaber, Shiao-Wei Kuo, Ahmed F. M. EL-Mahdy
Summary: In this study, a p-electron-extended triazine-based covalent organic framework was efficiently synthesized and demonstrated remarkable porosity, high thermal stability, and excellent adsorption capacity for RhB dye molecules. Additionally, the framework exhibited a high photocatalytic degradation efficiency for RhB and a significant capacity for hydrogen generation from water under ultraviolet-visible light irradiation. These findings suggest that the TFP-TPTPh COF has potential applications in water treatment and solar energy conversion.
Article
Polymer Science
Maha Mohamed Samy, Mohamed Gamal Mohamed, Shiao-Wei Kuo
Summary: This study describes the synthesis of three conjugated microporous polymers (CMPs) incorporating ferrocene (FC) units with PDAT, TPA-NH2, and TPE-NH2 for supercapacitor electrodes. Among them, the TPA-FC CMP electrode exhibited extended discharge time, with a specific capacitance of 129 F g(-1) and capacitance retention of 96% after 5000 cycles. This superior performance can be attributed to the presence of redox-active triphenylamine and ferrocene units, as well as the high surface area and good porosity of the TPA-FC CMP.
Article
Polymer Science
Aya Osama Mousa, Mohamed Gamal Mohamed, Cheng-Hsin Chuang, Shiao-Wei Kuo
Summary: A microporous carbon material (Py-PDT POP-600) with high nitrogen content and excellent CO2 uptake and specific capacitance was successfully prepared by carbonization of Py-PDT POP.
Correction
Materials Science, Multidisciplinary
Chang Zhang, Peng Xiao, Dong Zhang, Feng Ni, Jincui Gu, Qingquan Liu, Shiao-Wei Kuo, Tao Chen
ADVANCED FIBER MATERIALS
(2023)
Article
Polymer Science
Aya Osama Mousa, Mohamed Gamal Mohamed, Zheng-Ian Lin, Cheng-Hsin Chuang, Chih-Kuang Chen, Shiao-Wei Kuo
Summary: Here, a new approach for synthesizing conjugated microporous polymers (CMPs) with adjustable pore sizes and exceptional chemical and physical properties is presented. The CMPs are synthesized through a Suzuki coupling condensation reaction using 2,1,3-benzothiadiazole (BBT) and other monomeric units such as triphenylamine (TPA), tetraphenylethylene (TPE), and pyrene (Py). The synthesized CMPs demonstrate high thermal stability, low toxicity, and outstanding biocompatibility, making them promising for biomedical applications and as drug carriers for tetracycline antibiotics.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Chemistry, Physical
Taher A. Gaber, Lamiaa Reda Ahmed, Ahmed F. M. EL-Mahdy
Summary: In this study, redox-active conjugated microporous polymers based on pyrene and benzodithiophene-4,5-dione units were synthesized for supercapacitor energy storage devices. The CMPs exhibited outstanding thermal stabilities, surface areas, charge transport capabilities, and conductivity. The resulting supercapacitors showed excellent capacitance and energy density with high cycling stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Polymer Science
Ahmed F. F. Saber, Mostafa Ahmed, Shiao-Wei Kuo, Ahmed F. M. EL-Mahdy
Summary: In this study, novel tetraphenylcyclopentadiene-based CMPs were synthesized and thermally transformed into porous carbonaceous electrode precursors for supercapacitors. Among them, the CP-TCT-700 showed the highest degradation temperature, large BET surface area, and sponge-like morphology. It exhibited superior electrochemical performance with high specific capacitance, energy density, and cycling retention over 5000 cycles.
Article
Materials Science, Multidisciplinary
Kuan-Ying Chen, Hsuan-Sen Wang, Shih-Po Su, Shiao-Wei Kuo, Chao-Kuei Lee, Ahmed F. M. EL-Mahdy
Summary: In this study, a new π-electron-delocalized building block, ProPh-4CHO, was used to construct a π-electron-extended porphyrin/pyrene-linked covalent organic framework (ProPh-PyTA-COF) as a saturable absorber in a Q-switched all-solid-state laser. Utilizing a mode-locked fiber laser, ProPh-PyTA-COF demonstrated remarkable optical nonlinear absorptions with two saturable absorptions. The laser incorporating this COF-SA exhibited a high pump power and pulse repetition rate.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Chemistry, Applied
Guohu Zhang, Ahmed M. Elewa, M. Rashad, Saloua Helali, Ho-Hsiu Chou, Ahmed F. M. EL-Mahdy
Summary: Donor-acceptor type conjugated microporous polymers (D-A CMPs) have gained popularity for photocatalytic hydrogen evolution due to their ability to efficiently separate photoinduced holes and electrons and absorb visible light. This study presents the directed synthesis and photocatalytic activity of two isostructural triazine- and porphyrin-based CMPs. The results show that these CMPs have high specific surface areas and thermal stabilities. The introduction of a Zn atom into a porphyrin ring greatly influences its optoelectronic properties and photocatalytic efficiency. The Zn-Por-TPT CMP has one of the highest reported photocatalytic hydrogen evolution rates for a D-A CMP, and also exhibits improved stability during prolonged irradiation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Physical
Yin Lu, Nan Li, Yaliang Peng, Mohamed Gamal Mohamed, Shiao-Wei Kuo, Kan Zhang
Summary: A facile and eco-friendly synthetic strategy has been developed to achieve a series of hydrogen bonding-rich bio-based thermosetting resins. The obtained resins possess desirable properties, including excellent thermal stability, strong adhesion strength, and tunable surface properties.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2023)
Review
Polymer Science
Yi-Shen Huang, Dula Daksa Ejeta, Shiao-Wei Kuo, Yasuyuki Nakamura, Chih-Feng Huang
Summary: This article introduces the application of controlled/living polymerization techniques in polymer synthesis, with a focus on the research of combination methods and the synthesis of innovative materials. It is found that by using various polymerization reactions and reaction combinations, polymer materials with special structures and properties can be synthesized.
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
