Article
Chemistry, Multidisciplinary
Dorota Ogrodowska, Iwona Zofia Konopka, Malgorzata Tanska, Waldemar Brandt, Beata Pilat
Summary: The aim of this study was to compare the effects of different carbohydrates on the encapsulation efficiency and oxidative stability of model oil. The results showed that native wheat starch was the best encapsulating agent and antioxidant, while rice starch had lower encapsulation efficiency.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
Yu Sun, Chengyue Yang, Yong Fu, Tuanyu Guo, Guiyang Yan, Jianshe Hu
Summary: This study aims to design an efficient and inexpensive adsorbent to capture Hg(II) ions. A polysulfide complex material was prepared through sulfur, oleylamine, and potato starch. The adsorbent showed high adsorption capacity and removal, as well as selectivity for Hg(II) ions and recyclability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Ghazal Bashiri, Seyed Abbas Shojaosadati, Mahdi Abdollahi
Summary: The study successfully synthesized hybrid bovine serum albumin-gum arabic aldehyde (BSA-GAA) nanogels using periodate modified gum arabic as a cross-linker, and demonstrated their potential in drug delivery and biomedical applications through various analyses and experiments.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Energy & Fuels
Ahmet Munir Ozdemir, Erkut Yalcin, Mehmet Yilmaz, Baha Vural Kok, Ertugrul Cambay
Summary: The effect of capsules on the mechanical properties of asphalt mixtures was investigated by adding capsules containing different ratios of waste vegetable oil. Creep tests were conducted with and without capsules, and finite element method was used to simulate the capsules. The Response Surface Method analysis showed that the addition of capsules increased the permanent deformation rate of asphalt mixtures.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ling Zhao, Feng Qiu, Xiaohua Deng, Yun Huang, Yuntao Li, Chunxia Zhao, Wenhao Ren, Chao Zou, Xing Li, Mingshan Wang, Yuanhua Lin
Summary: In recent years, lithium-sulfur (Li-S) batteries have attracted significant attention as a next-generation energy storage technology due to their high theoretical specific capacity, safety, and cost-effectiveness. However, the dissolution and migration of lithium polysulfide intermediates severely affect their energy density and calendar life. Therefore, it is important to suppress the polysulfide shuttle effect in electrolytes. In this study, a sulfur-containing polymeric cathode, poly(vinyl trimethoxysilane-co-sulfur) (PVTS), was successfully synthesized using an inverse vulcanization method to address the polysulfide problem. The sulfur-containing polymer effectively limits polysulfide diffusion, reduces polysulfide dissolution, and prevents the loss of active materials. Additionally, the PVTS/C cathode exhibits enhanced cycling stability and excellent rate performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Olga Koshkina, Lijun Thayyil Raju, Anke Kaltbeitzel, Andreas Riedinger, Detlef Lohse, Xuehua Zhang, Katharina Landfester
Summary: This study elucidates the significant role of surface properties of colloidal particles in the formation of supraparticles in colloidal Ouzo droplets. By modulating the surface properties, the shape of the final deposit can be changed, from spheroidal supraparticles to flat deposits, with implications for applications such as optics and catalysis.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Shuai Jiang, Lucas Caire da Silva, Tsvetomir Ivanov, Milagro Mottola, Katharina Landfester
Summary: This study demonstrates that the compartmentalization of enzymes in eukaryotic cells can be artificially emulated using synthetic organelles, enabling the regulation of reaction outcomes through enzyme co-compartmentalization and nanoreactor integration.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
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
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.
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
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
Pharmacology & Pharmacy
Loris Busch, Anna Maria Hanuschik, Yuri Avlasevich, Katrin Darm, Elisa F. F. Hochheiser, Christian Kohler, Evgeny A. A. Idelevich, Karsten Becker, Peter Rotsch, Katharina Landfester, Maxim E. E. Darvin, Martina C. C. Meinke, Cornelia M. M. Keck, Axel Kramer, Paula Zwicker
Summary: Hair follicles are important drug delivery targets for skin antisepsis due to their high concentration of skin microbiome. Nanoparticles can penetrate deeply into hair follicles and can be triggered to release drugs through various mechanisms. The study introduces UV-responsive nanocapsules containing hydroxyethyl starch, which demonstrated efficient release of ethanol and a strong reduction in microbial load on porcine ear skin. The findings suggest the potential for advanced skin antisepsis using UVA-responsive nanocapsules.
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
Chemistry, Physical
Mareike F. S. Deuker, Volker Mailaender, Svenja Morsbach, Katharina Landfester
Summary: Poly(ethylene glycol) (PEG) is commonly used to reduce unspecific protein adsorption and prolong nanocarrier circulation time, but the presence of anti-PEG antibodies in the bloodstream can counteract its stealth effect. This study found a high concentration and prevalence of anti-PEG antibodies in the German population, which led to higher uptake in macrophages and accelerated blood clearance of PEGylated nanocarriers.
NANOSCALE HORIZONS
(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.