Article
Materials Science, Multidisciplinary
Nicholas Turetta, Wojciech Danowski, Luca Cusin, Pietro Antonio Livio, Rawad Hallani, Iain McCulloch, Paolo Samori
Summary: In this study, we present the first example of an optically switchable OECT, which can undergo a reversible modulation of its ON current by up to 30% upon irradiation with UV and visible light. Through detailed investigations of the electrical and electronic characteristics of the channel material, we gained valuable insights into the electrochemical doping process occurring within the blend under light irradiation. This proof-of-concept work opens up possibilities for implementing complex neuromorphic operations and algorithms in OECTs.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Biochemistry & Molecular Biology
Ying Wu, Jie Gao, Jian-Hui Li, Bo-Kun Chen
Summary: In this study, a photoresponsive spiropyran-modified lignin (DLSP) was prepared by constructing a spiropyran structure in demethylated lignin (DL). DLSP showed improved absorption capacity in the UVA region and exhibited excellent fatigue resistance and enhanced sunscreen performance under UV irradiation. The inclusion of DLSP in creams resulted in a significant increase in the sun protection factor (SPF) after 8 hours of UV irradiation. DLSP also showed low skin penetration and good biocompatibility. These findings provide useful insights for the rational design of sunscreens with special functionalities.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Multidisciplinary
Anky Fitrian Wibowo, Joo Won Han, Jung Ha Kim, Ajeng Prameswati, Jihyun Park, Siti Aisyah, Nurmaulia Entifar, Jonghee Lee, Soyeon Kim, Dong Chan Lim, Myoung-Woon Moon, Min-Seok Kim, Yong Hyun Kim
Summary: In this study, highly conductive, flexible, transparent, and reversibly color-switchable films based on a spiropyran-incorporated cellulose acetate biopolymer were demonstrated. These films can achieve high performance photoelectronics, including reversibly tunable color switching. The optimized films showed outstanding mechanical stability and dimensional stability, with minimal resistance change after multiple bending cycles. This film has various potential applications, including visualizing information, flexible heating devices, and sensors.
MATERIALS RESEARCH LETTERS
(2022)
Article
Chemistry, Applied
Peng Liu, Xuelian Li, Hongxia Zhang, Wenting Li, Sen Li, Yufang Ren, Hengchong Shi, Xue Li
Summary: In this study, pH-responsive spiropyran-based fluorinated copolymers were prepared with antibacterial, antifouling, and fluorescence properties. These materials can effectively kill Staphylococcus aureus and Escherichia coli in bacterial microenvironments without cytotoxicity. They also exhibit good biocompatibility for reducing bacterial infections in medical devices. The multifunctional materials have great potential for applications in antibacterial, antifouling, and medical device monitoring.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Multidisciplinary
Chia-Wei Chang, Chia-Ti Wu, Yu-Liang Lin, Lin-Ruei Lee, Huan-Wei Lin, Bhaskarchand Gautam, Yu-Hsuan Tseng, Chih-Wei Liao, Chun-Ting Chang, Jiun-Tai Chen
Summary: This study investigates the photo-regulated electrical conductivities of PIL films using [C(3)mim-MA]-[TFSI], azobisisobutyronitrile, and poly-(ethyleneglycol) dimethacrylate as an ionic liquid monomer, an initiator, and a crosslinker, respectively. The results show that stretchable and photo-responsive conductive PIL-SP films can be fabricated, which can be reversibly converted to PIL-merocyanine films under UV and visible light illuminations. This study expands the applications of PIL materials.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Esma Mutluturk, Ugur Tamer, Tuncer Caykara
Summary: Smart dual-responsive hybrid colloidal particles were prepared using the interface-mediated reversible addition-fragmentation chain-transfer (RAFT) polymerization method. These particles, characterized by FTIR, H-1-NMR, GPC spectroscopies, and SEM, exhibit reversible conversion between hydrophobic and hydrophilic states, making them suitable for smart applications.
Article
Chemistry, Multidisciplinary
Samira Sanjabi, Jaber Keyvan Rad, Hamid Salehi-Mobarakeh, Ali Reza Mahdavian
Summary: The fabrication of multi-level anti-counterfeiting inks with fast reversibility and enhanced responsivity is a challenging issue. Smart capsules with nanometric size were used to prepare thermo- and photo-switchable nanocapsules. These nanocapsules showed spherical morphology and contained the desired materials in high percentages. The encapsulation of SPOH beside STC moieties enhanced the thermochromic efficiency and enabled multiple responsivities under UV-visible illumination.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Applied
Xin Zhang, Beibei Wang, Zhiyu Zheng, Guiqiang Yang, Chao Zhang, Liqiong Liao
Summary: This study developed a durable poly(vinyl alcohol) hydrogel with photo-switchable fluorescence properties by incorporating dual-color fluorescent nanoparticles. The hydrogel exhibited different fluorescence emission peaks under UV and visible light, and demonstrated pH responsive fluorescence behavior. It could be used as dual-color building blocks to construct various structures.
Article
Environmental Sciences
Shaorong An, Qiang Jin
Summary: This study proposed an advanced air stripping technology based on foam separation for removing low-concentration ammonia nitrogen in aqueous solution, showing favorable removal efficiency within a wide pH range. The interactions between SDS and NH4+ ions were demonstrated by a microcalorimeter, helping to clarify the mechanisms involved. The advanced air stripping could be a promising technology for minimizing low-concentration NH4+-N due to its simple operation and satisfactory removal efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Applied
Frederik Janssen, Eline Mesure, Arno G. B. Wouters
Summary: Proteins extracted from wheat can play a functional role in foods that require interfacial stabilization. This study found that the composition of aqueous flour extracts from wheat varied depending on the nitrogen fertilization levels. The presence of alpha- and gamma-gliadins in the extracts played a significant role in determining the foam stability and air-water interface characteristics.
Article
Chemistry, Physical
Shuting Li, Manting Li, Limin Chen, Jianying Yang, Zhao Wang, Fan Yang, Linhong He, Xinchun Li
Summary: Highly efficient Li+-responsive nanochannels were designed by functionalizing porous anodic aluminum oxide (AAO) membranes. The nanochannels showed specific recognition and transportation of Li+ ions, and their ion transport behaviors could be regulated by reversible photochemistry.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Weiwei Sui, Huawen Hu, Yinlei Lin, Peng Yi, Lei Miao, Haichen Zhang, Haiying He, Guangji Li
Summary: The study has developed a material with pH responsiveness through dopamine coating and silver particle construction, which can efficiently achieve bidirectional oil-water separation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Samiksha Vaidya, Meenakshi Sharma, Christian Bruckner, Rajeswari M. Kasi
Summary: The study investigated the mechanical, photochromic, and thermochromic properties of rhodamine-modified polynorbornenes, revealing the significant impact of introducing norbornene and methylene spacer groups in the monomer structure on material performance.
Article
Chemistry, Applied
Sina Ahmadi, Morteza Nasiri, Ali Pourrajab-miandoab, Farhang Abbasi, Fatemeh Hassanpour, Elham Sabzi
Summary: Poly(N-isopropylacrylamide)-spiropyran copolymers were immobilized onto glass substrates using surface-initiated atom transfer radical polymerization. The modified surfaces showed hydrophilicity with decreasing temperature and light irradiation, allowing for the formation and detachment of cell sheets.
PROGRESS IN ORGANIC COATINGS
(2022)
Review
Pharmacology & Pharmacy
Yuseon Shin, Patihul Husni, Kioh Kang, Dayoon Lee, Sehwa Lee, Eunseong Lee, Yuseok Youn, Kyungtaek Oh
Summary: The combination of nanotechnology and chemotherapy has led to more effective drug design through the development of nanomaterial-based drug delivery systems, offering precise control over the release of therapeutics. Among these systems, photo-triggered and pH-induced delivery methods have been widely studied and are effective in targeting solid tumors.
Article
Chemistry, Multidisciplinary
Ahmed Abdelmonem, Yingchun Zhang, Bjoern Braunschweig, Dana Glikman, Armin Rumpel, Wolfgang Peukert, Tajana Begovic, Xiandong Liu, Johannes Luetzenkirchen
Summary: The adsorption of cetyltrimethylammonium bromide on sapphire surfaces was studied, and the evolution of interfacial potentials and changes in spectroscopy were analyzed. The results suggest that CTA+ cations can neutralize the negative surface charge and even overcompensate it. The decrease in SFG and SHG intensities can be explained by the adsorbed CTA+ cations disrupting the structural order and replacing some interfacial water molecules.
Article
Energy & Fuels
Ashit Rao, Nathalie Schilderink, Duy Le-Anh, Ruosha Zeng, Caroline Lievens, Bjoern Braunschweig, Subhash C. Ayirala, Mohammed B. Alotaibi, Michel H. G. Duits, A. A. Yousef, Frieder Mugele
Summary: Natural molecules adsorbed on rock surfaces have a significant impact on geological processes such as oil recovery and underground CO2 storage. However, current geochemical models often overlook the formation and stability of these molecules. In this study, the authors use analytical techniques to investigate the deposition and desorption mechanisms of surface-active molecules on underground minerals, as well as their dependence on the composition of aqueous solutions.
Article
Polymer Science
Paulina Latko-Duralek, Michal Misiak, Monika Staniszewska, Karina Rosloniec, Marta Grodzik, Robert P. Socha, Marcel Krzan, Barbara Bazanow, Aleksandra Pogorzelska, Anna Boczkowska
Summary: This study developed polymer materials with biocidal properties by mixing nanoscale zinc, copper, and titanium oxide particles with the polymer matrix. The polyamide 12 nanocomposites showed satisfactory biocidal activity, and the metal oxides used were found to be non-toxic to cells.
Article
Materials Science, Multidisciplinary
Aleksandra Pacula, Alicja Drelinkiewicz, Malgorzata Ruggiero-Mikolajczyk, Piotr Pietrzyk, Robert P. Socha, Marcel Krzan, Malgorzata Nattich-Rak, Dorota Duraczynska, Elzbieta Bielanska, Malgorzata Zimowska
Summary: The study investigates the use of layered double hydroxides (LDHs) as precursors for metal oxides to prepare N-doped carbon materials. It is found that LDHs containing manganese can increase the quantity of carbonaceous product and affect its morphology, composition, and capacitive properties.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Polymer Science
Hristina Petkova, Ewelina Jarek, Mitko Doychinov, Marcel Krzan, Elena Mileva
Summary: Biocompatible and biodegradable ingredients of natural origin are widely used in various industries. This study focuses on the synergistic interactions in aqueous systems containing Quillaja saponins and Apple pectins. The results demonstrate that the structure and stability performance of the complex aqueous solutions can be finely tuned by changing the ratio of the bioactive ingredients, providing important information for the further development of aqueous solution formulations.
Article
Polymer Science
Marcel Krzan, Ewelina Jarek, Hristina Petkova, Eva Santini, Lilianna Szyk-Warszynska, Francesca Ravera, Libero Liggieri, Elena Mileva, Piotr Warszynski
Summary: This study demonstrates the efficiency of using chitosan-LAE mixtures to remove silica nanoparticles from aqueous phase through foaming and flotation, which prolongs the life of the foam and effectively prevents liquid leakage.
Article
Chemistry, Physical
Deb Kumar Bhowmick, Adrian Joe Urban, Manfred Bartsch, Bjoern Braunschweig, Helmut Zacharias
Summary: Efficient control of interface chemistry enables better tunability of electronic properties, and a novel near-UV-initiated direct modification method has been demonstrated to form stable organic monolayers on silicon surfaces with high hydrolytic stability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Bjoern Ratschmeier, Gina Ross, Andre Kemna, Bjoern Braunschweig
Summary: CO oxidation is a crucial process for the development of new catalyst materials for fuel cells, with room-temperature ionic liquids (RTILs) being used to modify the selectivity and activity in electrocatalysis. This study investigated the mechanism of CO oxidation in an RTIL system using in situ sum-frequency generation (SFG) spectroscopy and infrared absorption spectroscopy (IRAS). The results showed that the concentration of water in the RTIL had a significant effect on the onset potential for CO oxidation on Pt(111) electrode surfaces, and the choice of RTIL cation also impacted the surface excess of water and the efficiency of CO oxidation.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Sonia Kudlacik-Kramarczyk, Marcel Krzan, Mateusz Jamrozy, Alicja Przybylowicz, Anna Drabczyk
Summary: The study focuses on the development of polyvinylpyrrolidone (PVP)-based hydrogel dressings modified with royal jelly. The impact of royal jelly and crosslinking agent content on the physicochemical properties of the hydrogels and their potential as innovative dressing materials was analyzed. The hydrogel materials containing royal jelly showed an increase in swelling ratio with time and had a relatively homogeneous surface, but no dependence between composition and surface morphology was observed.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Michael Hardt, Franziska Busse, Simon Raschke, Christian Honnigfort, Javier Carrascosa-Tejedor, Paul Wenk, Philipp Gutfreund, Richard A. Campbell, Andreas Heuer, Bjoern Braunschweig
Summary: Smart interfaces that are responsive to external triggers such as light can undergo significant changes in surface tension and molecular structure at air-water interfaces. This study focuses on the use of alkyl-arylazopyrazole butyl sulfonate surfactants to demonstrate these changes through experiments and computer simulations. The research reveals that the alkyl chain has a drastic influence on the surface activity and responsiveness of interfacial surfactants.
Article
Chemistry, Physical
Marcel Krzan, Pradipta Chattopadhyay, Sandra Orvalho, Maria Zednikova
Summary: The influence of n-alkanol (C2-C10) water solutions on bubble motion was investigated. Two types of velocity profiles were observed: for low surface-active alkanols (C2-C4), bubble acceleration and terminal velocities decreased with increasing solution concentration, while for higher surface-active alkanols (C5-C10), bubbles detached from the capillary with acceleration and showed maximum local velocities. Terminal velocities decreased with increasing adsorption coverage. The observed differences were explained by varying states of the adsorption layer, leading to different hydrodynamic conditions of bubble motion.
Article
Polymer Science
Gohar Khachatryan, Karen Khachatryan, Joanna Szczepankowska, Marcel Krzan, Magdalena Krystyjan
Summary: The aim of this study was to design nanocomposites using a simple, low-cost and environmentally friendly synthesis method. Carbon nanostructures were used to reinforce the chitosan/alginate bond, improving the mechanical, solubility, water absorption, and UV radiation protection properties. SEM, FTIR, UV-VIS, and color analysis were used to determine the thickness and mechanical properties of the films. The tests showed uniform distribution of nanostructures and no chemical interactions between nanoparticles and polymers. Enrichment of the polysaccharide composite with graphene oxide and carbon nanotubes positively affected its absorption, mechanical capabilities, and color.
Article
Polymer Science
Natalia Stanislawska, Gohar Khachatryan, Karen Khachatryan, Magdalena Krystyjan, Malgorzata Makarewicz, Marcel Krzan
Summary: In this study, we aimed to obtain innovative and flexible biopolymer films based on sodium alginate and chitosan, and develop methods for generating nanocapsules with turmeric extract. The properties of the biocomposite films were analyzed using various testing methods, and it was found that the structure of the polysaccharides did not change during capsule manufacturing. The film with the highest concentration of capsules showed better performance in terms of solubility, water content, swelling degree, and mechanical properties.
Article
Polymer Science
Gohar Khachatryan, Karen Khachatryan, Magdalena Krystyjan, Lidia Krzeminska-Fiedorowicz, Anna Lenart-Boron, Anna Bialecka, Magdalena Krupka, Marcel Krzan, Karolina Blaszynska, Monika Hanula, Leslaw Juszczak
Summary: The dynamic development of nanotechnology has led to the innovation and improvement of nanocapsules based on biodegradable biopolymer composites. These nanocapsules gradually release biologically active substances with antimicrobial activity, which have regular, prolonged and targeted effects on pathogens. The antimicrobial properties of the obtained nanocomposites were strong against various bacterial and yeast strains isolated from different regions of the human body, indicating their high potential applicability as effective materials for dressings on infected wounds.
Article
Chemistry, Physical
Melanie Golomb, Niklas B. B. Arndt, Christian Honnigfort, Billura Shakhayeva, Bart Jan Ravoo, Bjoern Braunschweig
Summary: The molecular-level structure and microscopic properties of self-assembled monolayers (SAMs) with fluorinated aryazopyrazole (CF3-AAP) silanes on SiO2 surfaces were studied. The swithching of CF3-AAP molecules from E state to Z state resulted in a change in surface wettability and contact angle. The molecular kinetics and wetting dynamics of the SAMs were analyzed through sum-frequency generation spectroscopy and dynamic contact angle measurements.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)