Article
Chemistry, Multidisciplinary
Fukai Xie, Zhan Mao, Dennis P. P. Curran, Hongliang Liang, Wen Dai
Summary: A novel approach for highly functionalized organoborane synthesis is reported by using recoverable ultrathin cadmium sulfide (CdS) nanosheets as a heterogeneous photocatalyst, and a general and mild borylation platform that enables regioselective borylation of a wide variety of compounds. Mechanistic studies and density functional theory (DFT) calculations reveal the enhanced photocatalytic activity and stability of CdS due to the roles of photogenerated electrons and holes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xueying Qiu, Yin Zhang, Yanfei Zhu, Chang Long, Lina Su, Shaoqin Liu, Zhiyong Tang
Summary: Asymmetric photocatalysis using heterogeneous nanomaterials has made significant progress, meeting the requirements of modern chemistry for environmental friendliness and sustainable energy. By utilizing specific types of nanomaterials, such as semiconductors and porous materials, easy separation, recovery, and multiple reuse can be achieved.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ruidong Gao, Guang Zhang, Fanli Lu, Long Chen, Yang Li
Summary: In this study, two new pyrrole-based CMPs with large specific surface areas and good stabilities were successfully prepared by one-step oxidative self-polycondensation. Both CMPs exhibited high catalytic activity towards Knoevenagel condensation reaction, attributed to the inherent pore channels, high specific surface areas, and abundant nitrogen sites within CMPs. Additionally, both CMPs displayed excellent recyclability with negligible degradation after 10 cycles, providing new possibilities for designing novel nitrogen-rich high-performance heterogeneous catalysts.
FRONTIERS IN CHEMISTRY
(2021)
Review
Chemistry, Physical
Sarah Freeburne, Brock Hunter, Kirsten Bell, Christian W. Pester
Summary: Heterogeneous photocatalysis combines light chemistry with catalytic platforms to enable re-use of photocatalysts, providing economic, sustainable, safe, and user-friendly chemical syntheses. This review outlines recent developments in heterogeneous photocatalyst design and their use in mediating polymerizations. Four prevalent classes of materials, including nanoparticles, polymer networks, metal organic frameworks (MOFs), and immobilized photocatalysts on solid supports, are explored for their potential in light-mediated reversible deactivation radical polymerization.
Article
Chemistry, Physical
Naresh Nalajala, Kranti N. Salgaonkar, Inderjeet Chauhan, Siva Prasad Mekala, Chinnakonda S. Gopinath
Summary: The study synthesized facet-controlled Pd nanoparticles with different morphologies and Pt-coated Pd nanoparticles, finding that Pt-coating enhances catalytic activity, with 0.5θ(Pt)-Pd-TO/P25 showing the highest methanol conversion rate and formaldehyde selectivity. The results highlight the importance of surface properties in heterogeneous catalysis and suggest that a small amount of Pt can simulate the activity equivalent to bulk Pt.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Cheng Yan, Yi-Lin Liu, Qingyi Zeng, Gui-Gen Wang, Jie-Cai Han
Summary: This article provides a comprehensive and critical review of the recent advances in the field of 2D supported single-atom catalysts (SACs), including material characterization methods and various reactions. The article emphasizes the advantages of 2D nanomaterial supports in identifying reactive sites and reaction mechanisms, and highlights the key challenges and opportunities in this rising field.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Arjun Vijeta, Carla Casadevall, Souvik Roy, Erwin Reisner
Summary: Ni-deposited mesoporous graphitic carbon nitride (Ni-mpg-CNx) is introduced as an inexpensive, robust, easily synthesizable and recyclable material that functions as an integrated dual photocatalytic system. It overcomes the limitations of traditional reactions by providing new opportunities for dual catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Physical
Calum T. J. Ferguson, Kai A. Zhang
Summary: The combination of classical polymers with photocatalytic small molecules has yielded a class of recyclable photocatalytic materials that are inexpensive, easy to produce, and versatile in functionality and physical features. These materials can be easily tuned for specific application requirements, enabling a broad range of visible-light-mediated photoredox reactions.
Article
Chemistry, Multidisciplinary
Arkaprabha Giri, Abhijit Patra
Summary: This research introduces the application of porous organic polymers (POPs) in heterogeneous catalysis. Amorphous POPs activate substrates or encapsulate catalytically active metal centers, while conjugated POPs are used for photoinduced chemical transformations. The authors summarize their research achievements over the past ten years and discuss the prospects of POPs and POP-based hybrid materials in future catalytic applications.
Review
Chemistry, Physical
Camilo Perdomo, Nhat Truong Nguyen
Summary: The development of photocatalysts that can efficiently convert CO2 into valuable chemicals is crucial for addressing energy and climate change issues. Designing 1D heterostructures with unique properties such as high surface area and enhanced light absorption has shown potential to improve catalytic performance. Various synthesis strategies and catalytic activities of these heterostructures in CO2 reduction processes are discussed, along with current challenges and potential solutions.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2022)
Review
Chemistry, Organic
Carla Rizzo, Salvatore Marullo, Floriana Billeci, Francesca D'Anna
Summary: Supramolecular gels, formed by the self-assembly of low molecular weight molecules, serve as organized reaction media for organocatalytic and metal-catalysed processes. They are also utilized for photo- and biocatalysed reactions.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Yang Wang, Yong Yang, Qinghua Deng, Weibing Chen, Yongcai Zhang, Yong Zhou, Zhigang Zou
Summary: The establishment of green and environmental friendly sunlight-driven organic reactions has gained attention since the 21st century. Porous organic polymers (POPs) have shown great promise in photocatalytic organic reactions due to their functional designability, micromesoporous structure, and thermal/chemical stability. This review focuses on various amorphous POP materials and synthetic strategies, as well as the research progress in photocatalytic oxidation, coupling, reduction, cycloaddition, and polymerization reactions. The challenges and prospects for future research on amorphous POPs are also discussed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
G. Mamba, P. J. Mafa, V. Muthuraj, A. Mashayekh-Salehi, S. Royer, T. I. T. Nkambule, S. Rtimi
Summary: In recent years, ABO(3) perovskite materials have been widely used in heterogeneous advanced oxidation processes (AOPs) for water treatment and disinfection due to their remarkable catalytic properties. This review provides an overview of the synthesis strategies, structure, and properties of ABO(3) materials, and discusses their recent applications in various AOPs, including photocatalysis, Fenton/photo-Fenton, persulphate activation, sonocatalysis/sonophotocatalysis, catalytic/photocatalytic ozonation, piezocatalysis/piezo photocatalysis, and photoelectrocatalytic oxidation. The catalytic activity of ABO(3) perovskites can be modulated through synthesis protocol, doping, heterojunction formation, and the incorporation of carbon nanomaterials. Moreover, the combination of ABO(3) materials with oxidants such as persulphate, H2O2, and O-3 enhances the activity of hybrid processes. The review also discusses the mechanisms of charge carriers' formation and transfer in ABO(3-)mediated AOPs.
MATERIALS TODAY NANO
(2022)
Article
Nanoscience & Nanotechnology
M. Ansari, K. P. Prajapati, B. G. Anand, P. Chaudhuri, S. Mittal, K. Kar
Summary: In nature, hierarchically ordered supramolecular assemblies built from protein building blocks become key elements in the composition of both functional nanostructures and pathological nanostructures. The construction of multiprotein nanoarchitecture is an important research target for innovations in the designing of bioactive nanomaterials. However, the structural and catalytic characteristics of heterogeneous nanofibers formed from diverse proteins remain largely unknown.
MATERIALS TODAY NANO
(2023)
Article
Chemistry, Multidisciplinary
Shan-Shan Fu, Qiang-Qiang Yuan, Lihua Ma, Zhi-Ming Zhang, Tong-Bu Lu, Song Guo
Summary: A series of TEMPO@PCN-222 composite photocatalysts were developed by coordinating different amount of 4-carboxy-TEMPO with the secondary building units of PCN-222. Visible-light irradiation enables the transfer of photogenerated holes in the highest occupied molecular orbital of PCN-222 to TEMPO, significantly increasing the photosynthesis of bioactive (iso)quinolones. With an outstanding catalytic stability and substrate tolerance, TEMPO@PCN-222 exhibits a yield of 86.7% for 1-methyl-2-quinolinone, over four times higher than PCN-222 (21.4%). This study provides a new route for constructing composite photocatalysts from abundant starting materials for efficient photosynthesis of high value-added chemicals.
Correction
Chemistry, Multidisciplinary
Wenxin Wei, Francesca Mazzotta, Ingo Lieberwirth, Katharina Landfester, Calum T. J. Ferguson, Kai A. I. Zhang
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Julian Heuer, Thomas Kuckhoff, Rong Li, Katharina Landfester, Calum T. J. Ferguson
Summary: The production of photocatalytic self-assembled amphiphilic polymers enables selective control over reactions based on the substrate's physical properties. By polymerizing benzothiadiazole-based photocatalysts into hydrophilic or hydrophobic compartments, we achieved stark differences in reactivity for polar substrates but similar performance for hydrophobic substrates. Additionally, the use of secondary swelling solvents led to a significant increase in conversion for a radical carbon-carbon coupling reaction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Sizhe Li, Jie Yin, Hao Zhang, Kai A. I. Zhang
Summary: The oxidative formation of high value compounds using heterogeneous polymeric photocatalysts has become a valuable tool in catalysis. However, controlling the interaction between the active sites and oxygen molecules is challenging due to the large polymer backbone structure. In this study, a triazine-containing conjugated microporous polymer (CMP) with dual active sites was designed for molecular oxygen activation. Introducing fluorine atoms on the CMP backbone enhanced the adsorption and electron transfer of oxygen, efficiently generating superoxide radicals and singlet oxygen as active oxygen species. The photocatalytic activity, selectivity, and reusability of the CMP were demonstrated by the formation of benzothiazoles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Cyrine Ayed, Jie Yin, Katharina Landfester, Kai A. I. Zhang
Summary: Using photocatalytic oxidation to convert basic chemicals into high value compounds in environmentally benign reaction media is a current focus in catalytic research. The challenge of gaining controllability over product formation selectivity was addressed by designing covalent triazine frameworks as recyclable photocatalysts. Controlled selectivity was achieved by activating or deactivating specific photogenerated oxygen species. This study demonstrates a promising approach for achieving switchable product formation selectivity for challenging oxidation reactions in pure water.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Shoupeng Cao, Tsvetomir Ivanov, Marina de Souza Melchiors, Katharina Landfester, Lucas Caire da Silva
Summary: The article discusses the importance of polymersome-based biomimetic nanoreactors (PBNs) in nanomedicine and cell mimicry. It highlights the state of the art in functional polymersomes as biomimetic nanoreactors with membrane-controlled transport.
Article
Chemistry, Multidisciplinary
Rong Li, Julian Heuer, Thomas Kuckhoff, Katharina Landfester, Calum T. J. Ferguson
Summary: Pseudo-homogeneous polymeric photocatalysts are efficient and tunable materials with easily accessible catalytic centers. Creating highly efficient photocatalytic materials that can be separated and recovered quickly is a critical challenge. This study presents pH-responsive photocatalytic nanoparticles that are active and well-dispersed under acidic conditions but aggregate upon pH elevation, allowing easy recovery. These responsive photocatalytic polymers can be used in various transformations and can accelerate the reaction rate of anionic substrates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Organic
Thomas Kuckhoff, Richard C. Brewster, Calum T. J. Ferguson, Amanda G. Jarvis
Summary: The design and development of artificial metal-free photoenzymes aim to combine the selectivity of enzymatic reactions with the benefits of modern synthetic photocatalysts. This study presents the design of a novel artificial photoenzyme by integrating an organophotocatalytic moiety into a steroid carrier protein (SCP-2L). The modified photoenzymes showed selectivity for the oxidation of organic sulfides, with up to 192 turnovers.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Tsvetomir Ivanov, Shoupeng Cao, Nitin Bohra, Marina de Souza Melchiors, Lucas Caire da Silva, Katharina Landfester
Summary: We have developed a fully polymeric microreactor with a coacervate-in-vesicle architecture that exhibits an adaptive response to pH. The microreactor allows for the dynamic modulation of internal subcompartments, resulting in the sequestration and localization of enzymes and reaction products driven by environmental cues.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ran Wang, Yingjie Yu, Meiyu Gai, Ana Mateos-Maroto, Svenja Morsbach, Xiang Xia, Maomao He, Jiangli Fan, Xiaojun Peng, Katharina Landfester, Shuai Jiang, Wen Sun
Summary: Enzymatic reactions can effectively inhibit tumor growth by consuming tumor nutrients and producing cytotoxic species. Liposomal nanoreactors that perform enzymatic cascade reactions have been developed, increasing the overall efficiency of the reaction. This biomimetic approach provides a promising direction for developing catalytic nanomedicines in antitumor therapy.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Biochemistry & Molecular Biology
Jenny Schunke, Volker Mailaender, Katharina Landfester, Michael Fichter
Summary: Finding a long-term cure for tumor patients remains challenging. Immunotherapies show promise by activating the immune system against tumors and modulating the tumor microenvironment. However, current methods often fail to sufficiently activate the immune system and have limitations such as drug degradation and non-specific uptake. Encapsulating immunomodulatory molecules into nanocarriers offers a solution by protecting cargo and targeting uptake by antigen-presenting cells. This approach allows for versatile immune system stimulation and improved anti-tumor responses with reduced toxicity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Cell Biology
Laura Dietz, Jennifer Oberlaender, Ana Mateos-Maroto, Jenny Schunke, Michael Fichter, Eva-Maria Kraemer-Albers, Katharina Landfester, Volker Mailaender
Summary: This study analyzed the protein composition of extracellular vesicles (EVs) and the protein corona around EVs in human blood plasma using a proteomic approach. The influence of the protein corona on the uptake of EVs by human monocytes was then compared with the uptake of engineered liposomes. The results showed that the presence of a protein corona increased the uptake of EVs in human monocytes, indicating a clear difference between EVs and liposomes as nanocarriers.
JOURNAL OF EXTRACELLULAR VESICLES
(2023)
Article
Chemistry, Multidisciplinary
Tsvetomir Ivanov, Shoupeng Cao, Thao P. Doan-Nguyen, Heloisa Bremm Madalosso, Lucas Caire da Silva, Katharina Landfester
Summary: There is an increasing interest in multi-compartment systems that mimic the structure and function of biological cells. Droplet-based microfluidics (DBM) has emerged as a powerful technique for creating cell-like systems with multi-compartment architectures and biomimetic functionality. DBM has proven to be a reliable method for generating populations of cell-mimics with a compartment-in-compartment structure, some of which have adaptable properties that resemble the dynamic properties of natural cells. This review highlights the progress made in the construction of hierarchical cell-mimics using DBM methods.
