Article
Chemistry, Inorganic & Nuclear
Guangying Fu, Eddy Dib, Qiaolin Lang, Haonuan Zhao, Songxia Wang, Ruiqin Ding, Xiaobo Yang, Valentin Valtchev
Summary: This paper explores the synthesis field of microporous zeolite-type materials and discusses the types of organic structure-directing agents (OSDA) that can be utilized for their crystallization. The study demonstrates the novelty of using hexamethylenetetramine (urotropine) as a structure-directing agent for open-framework silica polymorphs. By protonating urotropine in an acidic fluorine-containing medium, it becomes an efficient OSDA that leads to the formation of dodecasil 3C (MTN-type). The author also investigates OSDA-framework interactions in the MTN-type structure and proposes a unit cell model based on experimental data and Monte Carlo simulation.
DALTON TRANSACTIONS
(2022)
Review
Chemistry, Applied
Victor de Aguiar Pedott, Gustavo Henrique Moraes, Cintia Soares, Natan Padoin, Humberto Gracher Riella, Cristiano Jose de Andrade
Summary: Explored the potential application of biosurfactants in materials synthesis, highlighting their advantages over synthetic structure directing agents, such as lower concentration requirement, lower surface tension, and lower toxicity, making them a promising green synthesis approach.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Energy & Fuels
Jun-fei He, Zhi-bo Xiong, Yan-ping Du, Wei Lu, Su-le Tian
Summary: The study investigated the morphology effect of tungsten oxide on the NH3-SCR activity of the supported CeO2 catalyst by comparing WO3 in different morphologies. It was found that Ce/W-NP exhibited the best redox ability and NH3-SCR activity, attributed to the highest molar ratio of W5+/(W5++W6+) and Ce4+ concentration on the surface. The use of acidic structure-directing agents in impregnated Ce/W catalysts is crucial for improving the catalytic activity.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Multidisciplinary
Peng Lu, Supriya Ghosh, Matheus Dorneles de Mello, Huda Sharbini Kamaluddin, Xinyu Li, Gaurav Kumar, Xuekui Duan, Milinda Abeykoon, J. Anibal Boscoboinik, Liang Qi, Heng Dai, Tianyi Luo, Shaeel Al-Thabaiti, Katabathini Narasimharao, Zaheer Khan, Jeffrey D. Rimer, Alexis T. Bell, Paul Dauenhauer, K. Andre Mkhoyan, Michael Tsapatsis
Summary: A novel pentasil-type zeolite material, named FDP, has been synthesized with ultra-small few-unit-cell crystalline domains, which can be used for producing highly active and selective catalysts. FDP is prepared using a di-quaternary ammonium structure directing agent and can incorporate Al and Sn into its framework to produce catalysts for methanol-to-hydrocarbon and glucose isomerization reactions, respectively. X-ray diffraction analysis and electron microscopy imaging show that FDP has crystalline domains of around 10 nm with hierarchical micro-/meso-porous aggregates exhibiting mesoscopic order.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Acoustics
Ayoung Choe, David Qin, Anthony M. Yu, Euisuk Chung, Anamik Jhunjhunwala, Julian A. Rose, Stanislav Y. Emelianov
Summary: The cancer microenvironment has a lower pH than healthy tissues, which can be exploited for more accurate cancer biopsy. A needle coated with pH-responsive PANI nanoparticles is developed for minimally invasive and quantitative pH analysis using ratiometric PA imaging. The PANI-needle shows a linear response in the 850-700 nm wavelength range as pH changes from 7.5 to 6.5. Its high surface area allows for fast and reversible response in just a few seconds. The PANI-needle successfully differentiates local pH in a hydrogel phantom with different pH regions, making it a promising technology for malignant tissue detection during needle biopsy through quantitative pH analysis guided by ultrasound PA imaging.
Article
Chemistry, Applied
Saeedeh Soheili, Ali Nakhaei Pour, Ali Mohammadi
Summary: The study investigated the effect of different structure-directing agents on the structure and morphology of silicoaluminophosphate molecular sieves, with triethylamine template showing effective role in mesoporosity and surface area of the prepared samples. Monte Carlo simulations demonstrated that samples with triethylamine template had more non-bonding interactions with the SAPO-34 molecular sieves.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xianshu Cai, Yue Zhao, Jun Zhang, Wenwen Zi, Shuo Tao, Feng Jiao, Hongbin Du
Summary: In this study, the synthesis of pure silica and aluminosilicate large-pore zeolites using an organic structure-directing agent (OSDA) was reported. These zeolites exhibited excellent acid and hydrothermal stabilities, and showed potential for size-selective catalytic applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Palak Patel, Manoj Kumar Nandi, Ujjwal Kumar Nandi, Sarika Maitra Bhattacharyya
Summary: This study aims to describe systems with continuous size polydispersity in a way that avoids artificial softening of the structure, using an optimum number of pseudospecies M-0 depending on the degree and type of polydispersity. Interestingly, M-0 is independent of system size but the maximum width of polydispersity Δσ(0) shows stronger dependence on the type of interaction potential. Systems with softer interaction potentials have higher tolerance for polydispersity.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Huanhuan Yuan, Yunjie Liu, Ling Tong, Zhiwei Wang
Summary: A comparative investigation was conducted on the morphologies and structures of Au nanoparticles synthesized using different capping agents, revealing a synergistic effect of shape-directing agents on growth pathways and shape formation. Depending on the specific use of surfactants/polymers, iodide additives can promote or lead to the evolution of nanoparticle shapes.
Article
Chemistry, Inorganic & Nuclear
Gele Teri, Xin Liu, Na Li, Muge Shele, E. Namila, Liming Qi, Sagala Bai, Menghe Baiyin
Summary: In recent years, chalcogenides have gained significant attention due to their potential applications as photoelectric materials. This study presents the synthesis of quaternary seleniumstannates Cs2MnSnSe4 (1) and Rb2MnSnSe4 (2) using solvothermal methods. Compound 1 exhibits a one-dimensional (1D) anion [MnSnSe4](n)(2-) chain, while compound 2 possesses a unique two-dimensional (2D) anion [MnSnSe4](n)(2-) layer. Both compounds demonstrate a strong photocurrent response. Additionally, the photocatalytic degradation properties of methylene blue were investigated, and a theoretical study was conducted to analyze the relationship between optical properties and electronic structure.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Polymer Science
Yanlin Shi, Sung-Po R. Chen, George Fragkiadakis, Daniele Parisi, Virgil Percec, Dimitris Vlassopoulos, Michael J. Monteiro
Summary: The shape, breadth, and average molecular weight of the overall molecular weight distribution (MWD) are important for determining polymer properties. Traditional methods can only achieve desired Gaussian distribution through complex modeling, while living radical polymerization provides a simpler route. Blending low-reactive RAFT agents allows the construction of square, slanted, and chair-like MWDs, providing control over MWD shape and breadth. This blending method overcomes difficulties in producing unusual MWDs and offers a general synthetic strategy for studying structure-property relationships of polymers.
Article
Chemistry, Multidisciplinary
Tatyana Sergeevna Sazanova, Leonid Alexandrovich Mochalov, Alexander Alexandrovich Logunov, Mikhail Alexandrovich Kudryashov, Diana Georgievna Fukina, Maksim Anatolevich Vshivtsev, Igor Olegovich Prokhorov, Pavel Andreevich Yunin, Kirill Alexandrovich Smorodin, Artem Anatolevich Atlaskin, Andrey Vladimirovich Vorotyntsev
Summary: Zinc oxide nanoparticles were synthesized using plasma-enhanced chemical vapor deposition (PECVD) and their size, morphology, and structural properties were studied. The zinc source temperature and reactor temperature were found to affect the shape and size of the nanoparticles.
Article
Chemistry, Applied
Mukesh Kumar Meher, Krishna Mohan Poluri
Summary: This study synthesized heparinized silver nanoparticles using a chemical reduction method and found that the concentration of heparin plays a crucial role in determining the size and shape of the nanosilver. Different morphologies of heparin-coated nanosilver exhibited varying anticoagulation and antimicrobial activities, highlighting the potential for sustainable applications in nanotechnology.
CARBOHYDRATE POLYMERS
(2021)
Article
Materials Science, Multidisciplinary
Johannes Seidler, Victor Landgraf, Luciana Vieira, Daniel Van Opdenbosch, Siegfried R. Waldvogel
Summary: In this study, novel uniform cuprous oxide microcrystals were successfully synthesized using carboxylic acids and amino acids as structure directing agents under hydrothermal conditions. N,O-type complexing agents showed higher reduction ability than O,O-type ligands, and the choice of oxalate or citrate complexes influenced the morphology of Cu2O crystals.
Article
Chemistry, Physical
Carin C. S. Batista, Alessandro Jager, Brunno L. Albuquerque, Ewa Pavlova, Petr Stepanek, Fernando C. Giacomelli
Summary: This study successfully synthesized polymer-stabilized silver nanoparticles (AgNPs) using microfluidic devices, resulting in nanoparticles with improved homogeneity. By adjusting the concentrations of the silver precursor and reducing agent, the size and polydispersity of the nanoparticles can be controlled. The use of the block copolymer PEO-b-P2VP as a stabilizer led to larger nanoparticles compared to those stabilized by PVP.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Biotechnology & Applied Microbiology
Ruchika Chauhan, Jay Singh, Pratima R. Solanki, T. Basu, Richard O'Kenriedy, B. D. Malhotra
BIOCHEMICAL ENGINEERING JOURNAL
(2015)
Article
Nanoscience & Nanotechnology
Sheetal K. Bhardwaj, Premlata Yadav, Subhasis Ghosh, Tinku Basu, Ajit K. Mahapatro
ACS APPLIED MATERIALS & INTERFACES
(2016)
Review
Biophysics
Ruchika Chauhan, Jay Singh, Tushar Sachdev, T. Basu, B. D. Malhotra
BIOSENSORS & BIOELECTRONICS
(2016)
Article
Chemistry, Multidisciplinary
P. Romero-Hasler, A. E. Fierro-Armijo, E. A. Soto-Bustamante, A. Meneses-Franco
Article
Chemistry, Analytical
Ruchika Chauhan, Jay Singh, Pratima R. Solanki, T. Manaka, M. Iwamoto, T. Basu, B. D. Malhotra
SENSORS AND ACTUATORS B-CHEMICAL
(2016)
Article
Engineering, Electrical & Electronic
Sheetal K. Bhardwaj, Tinku Basu, Ajit K. Mahapatro
INTEGRATED FERROELECTRICS
(2017)
Article
Materials Science, Multidisciplinary
Sheetal K. Bhardwaj, Tinku Basu
Article
Chemistry, Analytical
Pragadeeshwara R. Rao, Shalini Sharma, Tithi Mehrotra, Rajashree Das, Ranjit Kumar, Rachana Singh, Indrajit Roy, Tinku Basu
ANALYTICAL CHEMISTRY
(2020)
Article
Engineering, Biomedical
Shreyas Vasantham, Ruby Alhans, Chaitali Singhal, Shalini Nagabooshanam, Sumaya Nissar, Tinku Basu, Sekhar C. Ray, Shikha Wadhwa, Jagriti Narang, Ashish Mathur
BIOMEDICAL MICRODEVICES
(2019)
Article
Chemistry, Analytical
Chansi, Rashi Bhardwaj, R. Pragadeeshwara Rao, Irani Mukherjee, Pawan Kumar Agrawal, Tinku Basu, Lalit M. Bharadwaj
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Chansi, Shikha Upreti, Punya, Jay Singh, Madhumita P. Ghosh, Tinku Basu
Summary: The major challenges in ophthalmic treatment include limited residence time of drugs in the ocular surface, poor bioavailability, and side effects. This study demonstrates the potential of using mucoadhesive FeMOF as a drug delivery system to enhance preocular retention of ophthalmic drugs. The results from in-vitro studies suggest that TM@FeMOF could be a successful biocompatible, biodegradable, and sustainable ophthalmic drug delivery system with enhanced drug release capabilities.
Article
Engineering, Environmental
Isha Fuletra, Chansi, Sumaya Nisar, Rashi Bhardwaj, Punya Saluja, Sheetal K. Bhardwaj, K. Asokan, Tinku Basu
Summary: The experiment successfully developed an electrochemical sensor for trace level arsenic detection in water by integrating gold nano islands with the substrate ITO surface, fixed with 1, 4-dithiothreitol (DTT). The sensor showed wide linearity, low detection limit, good selectivity against various interfering substances, and demonstrated sensitive, rapid, and reliable characteristics, with potential for commercialization.
GROUNDWATER FOR SUSTAINABLE DEVELOPMENT
(2021)
Article
Chemistry, Multidisciplinary
Chansi, R. Pragadeeshwara Rao, Irani Mukherjee, Tinku Basu, Lalit M. Bharadwaj
Article
Materials Science, Biomaterials
Sheetal K. Bhardwaj, Ruchika Chauhan, Premlata Yadav, Subhasis Ghosh, Ajit K. Mahapatro, Jay Singh, Tinku Basu
BIOMATERIALS SCIENCE
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
J. Gope, S. Bhadra, S. Chattopadhyay, S. Saha, S. Mukherjee, T. Basu, E. Roy, O. Ghosh, A. Chakraborty
2017 4TH INTERNATIONAL CONFERENCE ON OPTO-ELECTRONICS AND APPLIED OPTICS (OPTRONIX)
(2017)
