Review
Polymer Science
Jean-Michel Guenet
Summary: The physics of organogelation is explored through thermodynamics, structure, and rheology. Gel formation occurs through first-order transitions, mainly by homogeneous nucleation. Mapping out the temperature-concentration phase diagram is crucial for understanding the system.
Article
Chemistry, Multidisciplinary
Paco Visser, Ben L. Feringa
Summary: In the past decade, major breakthroughs have been made in C-C bond formation using palladium-catalyzed cross-coupling reactions with organolithium reagents. However, the use of inert conditions and slow addition of organolithium species are usually required. In this study, the Pd-catalyzed cross-coupling of C36H74-gelated organolithium reagents with aryl bromides is described, which proceeds in 5 minutes at room temperature without the need for slow addition or strict inert atmosphere. The use of organolithium gels facilitates handling and greatly enhances process safety, as demonstrated by a gram-scale transformation without the need for extraordinary safety precautions.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Yajie Bai, Jianmin Lu, Hongye Bai, Zhenyuan Fang, Fagen Wang, Ying Liu, Dongtian Sun, Bifu Luo, Weiqiang Fan, Weidong Shi
Summary: In summary, a p-type BiVO4 photocathode was reported for NRR, showing promising performance in terms of ammonia evolution rate and Faradaic efficiency, surpassing most reported photoelectrocatalysts. The V sites were identified as the main active centers for N2 adsorption/activation through density functional theory calculations.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Polymer Science
Sheah Yee Ghan, Lee Fong Siow, Chin Ping Tan, Kok Whye Cheong, Yin Yin Thoo
Summary: This study investigated the interaction between soy lecithin, glyceryl monostearate, and water in palm olein to create an organogel with similar mechanical properties to commercial spread. The optimized organogel had a higher oil binding capacity than the commercial product, and no significant difference was observed in the mechanical properties. The results have important implications for developing a low-fat spread with a potential fat replacer.
Article
Polymer Science
Shuwen Cheng, Yu Hu, Xuanhong Wu, Wei Li, Jingshan Mu
Summary: A series of different shaped semi-crystalline triblock copolymers were prepared and studied for their self-assembly behavior during solvent vapor annealing. The dumbbell-shaped polymer showed plasticization effects on the PE midblock, affecting chain folding and reducing crystallinity. The hierarchical self-assembly process was influenced by both PE crystallization and copolymer topological structures.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2021)
Article
Agriculture, Multidisciplinary
Sarah Warner, John P. Munafo
Summary: In this study, the aroma profile of Chardonnay seeds was analyzed, and 6 key odorants were identified. These findings provide a foundation for optimizing the flavor of Chardonnay marc powder in the future.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Ursula Pia Ferrara, Cristina Tortora, Carmen Rosano, Antonia Assunto, Alessandro Rossi, Stefano Pagano, Mariateresa Falco, Chiara Simeoli, Rosario Ferrigno, Alessandra D'Amico, Dario Di Salvio, Giuliana Cangemi, Rosario Pivonello, Pietro Strisciuglio, Daniela Melis
Summary: This study aimed to evaluate bone metabolism in NF1 patients and investigate factors potentially contributing to reduced bone mineral density (BMD). The study found that NF1 patients had lower Z-scores at DXA compared to controls. Reduced physical activity and sun exposure were observed in NF1 patients. Vitamin D was identified as the most predictive factor of reduced z-score at DXA, and supplementation significantly increased BMD z-score. These findings are important for the follow-up and prevention of osteopenia/osteoporosis in NF1 patients.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Medicinal
Rafael Rodriguez, Elena Rivadulla-Cendal, Emilio Quinoa, Felix Freire
Summary: The chiral information transmission in helical polymers is primarily determined by the configuration of the first chiral center, while the second chiral residue has minimal impact due to its remote position from the polyene main chain. In this study, we demonstrate how the stimuli responsive properties of diastereomeric polymers vary based on the differing properties of diastereoisomers.
Article
Chemistry, Multidisciplinary
Peng Chen, Xiaohan Sun, Bernd Plietker, Michael Ruck
Summary: A newly developed electrolyte enables dendrite-free growth and efficient reaction in zinc ion hybrid capacitors, resulting in stable performance under different conditions.
Review
Immunology
Jin Gong, Wei Tu, Jingmei Liu, Dean Tian
Summary: Hepatocytes, as the major cells in the liver, have significant roles in maintaining liver homeostasis. They can undergo organelle damage in response to liver insults and inflammatory signals, leading to the release of pro-inflammatory factors and initiation of an inflammatory response. This review summarizes the connection between hepatic organelle damage and liver inflammation, as well as introduces various hepatocyte-derived pro-inflammatory factors in chronic liver injury.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Kai Wang, Tao Ye, Xu Huang, Yuchen Hou, Jungjin Yoon, Dong Yang, Xiaowen Hu, Xiaofang Jiang, Congcong Wu, Guofu Zhou, Shashank Priya
Summary: Material recycling from used perovskite solar cells for remaking new devices has been inefficient, but a bleacher solution is shown to disassemble cells into collectable parts with high material reuse rate. The remade device using recycled materials exhibits minimal efficiency drop, indicating a promising high-efficiency recycle-remake strategy for extending the life cycle of perovskite photovoltaics.
Article
Chemistry, Multidisciplinary
Tung-Han Yang, Jaewan Ahn, Shi Shi, Dong Qin
Summary: Ligands (PVP) bind to Ag nanocrystal surfaces through carbonyl groups, with conformational changes in response to varying solvent qualities, resulting in changes in the intensity of the C=O peak in SERS spectra.
Review
Chemistry, Multidisciplinary
Belya A. Hermawan, Mutakin, Aliya N. Hasanah
Summary: Imprinted monolith columns have high permeability and minimal backpressure, with factors such as synthesis conditions, back pressure, and the nature of the stationary phase affecting their performance. The pore structure and morphology are influenced by the porogenic solvent, with different polarity levels and mixtures impacting the resulting column's performance.
Article
Chemistry, Multidisciplinary
Zulal Ozdemir, David Saman, Kia Bertula, Manu Lahtinen, Lucie Bednarova, Marketa Pazderkova, Lucie Rarova, Nonappa, Zdenek Wimmer
Summary: By synthesizing conjugates containing spermine units, we successfully prepared gels that self-assemble into fibrous networks at high concentrations, exhibiting thixotropic rheological behavior. Furthermore, our results indicate that the position and number of spermine units can affect gelation properties and biological activity, providing a basis for exploring other triterpenoids as useful building blocks.
Article
Chemistry, Organic
Siai Zhou, Jiaming Ao, Aoxin Guo, Xiaoya Zhao, Nan Deng, Guoqing Wang, Qixuan Yang, Akihiro Ishiwata, Xue-Wei Liu, Qianqian Li, Hui Cai, Feiqing Ding
Summary: A versatile ZnI2-directed fi-galactosylation approach using a 4,6-O-tethered and 2-O-Bn galactosyl donor is reported for the stereoselective and efficient synthesis of fi-O-galactosides. The reaction tolerates a wide range of functional groups and complex molecular architectures, providing stereocontrolled fi-galactosides in moderate to excellent yields. The practicality of this transformation is demonstrated through the synthesis of a tetrasaccharide arabinogalactan fragment with high stereoselectivity.
Review
Chemistry, Multidisciplinary
Vakayil K. Praveen, Balaraman Vedhanarayanan, Arindam Mal, Rakesh K. Mishra, Ayyappanpillai Ajayaghosh
ACCOUNTS OF CHEMICAL RESEARCH
(2020)
Article
Materials Science, Multidisciplinary
Gourab Das, Rajasekaran Thirumalai, Balaraman Vedhanarayanan, Vakayil K. Praveen, Ayyappanpillai Ajayaghosh
ADVANCED OPTICAL MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Pankaj B. Agarwal, Rishi Sharma, Dharmesh Mishra, Navneet Kumar Thakur, Ajay Agarwal, Ayyappanpillai Ajayaghosh
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Anjali Nirmala, Indulekha Mukkatt, Sreejith Shankar, Ayyappanpillai Ajayaghosh
Summary: The study demonstrates a method to use a mixture of iron (II) chloride and bipyridine as a reversible thermochromic switch and logic operator, showing generality. It also proves the concept of an optically readable multi-state volatile memory with temperature as a precision input.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
P. R. Nitha, V. Jayadev, Sourava C. Pradhan, Velayudhan V. Divya, Cherumuttathu H. Suresh, Jubi John, Suraj Soman, Ayyappanpillai Ajayaghosh
CHEMISTRY-AN ASIAN JOURNAL
(2020)
Article
Nanoscience & Nanotechnology
Indulekha Mukkatt, Anjali Nirmala, Nayan Dev Madhavan, Sreejith Shankar, Biswapriya Deb, Ayyappanpillai Ajayaghosh
Summary: The study designed three tetraterpyridine ligands with variations in their core architecture to create spray-coated electrochromic assemblies of iron(II)-based metallosupramolecular polymer network films. These assemblies exhibited high coloration efficiencies and optical contrast, suitable for electrochromic devices. The ligand-structure induced differential metal coordination led to porosity and spectroelectrochemical diversification, enabling the creation of electrochromic patterns and images through a simple spray-coating technique.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Gourab Das, Sandeep Cherumukkil, Akhil Padmakumar, Vijay B. Banakar, Vakayil K. Praveen, Ayyappanpillai Ajayaghosh
Summary: In this study, the creation and control of distinct supramolecular energy landscapes for reversible control of excited-state emission processes were demonstrated through cascade energy transfer in chromophore assemblies. Enhanced near-infrared emission was achieved by manipulating morphology and excitation energy transfer with variable solvent composition and ultrasound stimulation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Sandeep Cherumukkil, Gourab Das, Ravi P. N. Tripathi, G. V. Pavan Kumar, Sunil Varughese, Ayyappanpillai Ajayaghosh
Summary: Bodipy-PE-2 self-assembly forms a layered photonic structure upon thermal annealing, exhibiting angle-dependent iridescence of green and pink with a luminescence shift from yellow to red. The properties are attributed to the micro- and nano-periodicity associated with the layered structure and the phase transformation due to annealing. The material shows active and passive waveguiding properties when excited with 532 and 633 nm laser sources.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
C. K. Vipin, Atul Shukla, Kavya Rajeev, Monirul Hasan, Shih-Chun Lo, Ebinazar B. Namdas, Ayyappanpillai Ajayaghosh, K. N. Narayanan Unni
Summary: Pure white light emission was achieved by combining the exciplex emission with field-induced electromer emission. Electromer emission has significantly long-lived components, indicating possible utilization of triplet excitons in radiative recombination.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Anjali K. Sajeev, Nishkarsh Agarwal, Anjaly Soman, Shilpi Gupta, Monica Katiyar, A. Ajayaghosh, K. N. Narayanan Unni
Summary: The study demonstrates the use of an external light extraction layer made of polydimethylsiloxane and zinc oxide nanoparticles to enhance the efficiency of OLEDs. The layer significantly improves light outcoupling, with white OLEDs showing the highest enhancement of 80%. Green OLEDs also exhibit substantial improvement, followed by red and blue OLEDs.
ORGANIC ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Reethu Haridas, Jayadev Velore, Sourava Chandra Pradhan, Asarikal Vindhyasarumi, Karuvath Yoosaf, Suraj Soman, K. N. Narayanan Unni, Ayyappanpillai Ajayaghosh
Summary: Two new molecularly engineered D-pi-A sensitizers, YK 8 and YK 9, based on carbazole have been developed for indoor photovoltaic applications. The efficient power output achieved under various illumination conditions demonstrates the potential of these sensitizers for powering low-power sensors and actuators on the Internet of Things network. The study also explores the role of pi-spacer in recombination and device performance through extensive interfacial studies.
MATERIALS ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Sarah K. M. McGregor, Chinju Govind, Michael K. R. Wood, Atul Shukla, Hyunsoo Lim, Romain J. Lepage, Elizabeth H. Krenske, Narayanan K. N. Unni, Ayyappanpillai Ajayaghosh, Venugopal Karunakaran, Ebinazar B. Namdas, Shih-Chun Lo
Summary: A new solution-processable N-styrylcarbazole-linked tetraphenylethylene derivative with green-orange emission was synthesized and characterized, showing significant photoluminescence enhancement in neat-film. The excited-state dynamics and enhanced PLQYs in the solid state were attributed to the restriction of structural relaxations, not aggregation effects commonly associated with TPE materials.
ADVANCED PHOTONICS RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Sandip Chakraborty, Manu M. Joseph, Sunil Varughese, Samrat Ghosh, Kaustabh K. Maiti, Animesh Samanta, Ayyappanpillai Ajayaghosh
Article
Chemistry, Multidisciplinary
I Mukkatt, P. M. Anjana, A. Nirmala, R. B. Rakhi, S. Shankar, A. Ajayaghosh
MATERIALS TODAY CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Samrat Ghosh, Sreejith Shankar, Divya Susan Philips, Ayyappanpillai Ajayaghosh
MATERIALS TODAY CHEMISTRY
(2020)
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.
