Article
Materials Science, Multidisciplinary
Puja Das Karmakar, Aniruddha Pal, Subhadip Bodhak, Sagar Pal
Summary: The study synthesized nanocomposites consisting of magneto-responsive gamma-Fe2O3 NPs and copolymers, with a regular core-shell morphology where the magnetic NPs act as the core and the copolymer as the shell. This developed nanocarrier has been found to be highly efficient in carrying a hydrophobic drug (naproxen).
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Materials Science, Composites
Zongqian Yuan, Aishun Ding, Binbin Xu, Xiaoyu Huang, Guolin Lu, Hao Guo
Summary: This study presents a new method for producing reactive composite nanofibers through polymerization-induced self-assembly (PISA). The method allows for the preparation of one-dimensional composite nanofibers with controlled molecular weights and narrow dispersities.
COMPOSITES COMMUNICATIONS
(2022)
Article
Polymer Science
Oleg Lebedev, Alexandra Grigoreva, Aleksandr Chicharov, Alexey Markin, Sergey Zaitsev
Summary: The copolymerization of HFIPA and OFPA with NVP was studied in the presence of BTC and polymeric RAFT agents based on fluoroacrylates. The copolymerization process proceeds in a control mode, confirmed by the first order of reaction by monomer and SEC curves. The influence of subphase composition and pH on the surface properties of copolymers was investigated, and the morphology of LB films of various compositions was studied by atomic force microscopy.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Polymer Science
Daniela de Morais Zanata, Maria Isabel Felisberti
Summary: In this study, thermo-responsive and pH-responsive triblock copolymers were synthesized, which can self-assemble into nanostructures and encapsulate hydrophobic molecules under specific conditions. The P4VP blocks can coordinate with Cu2+ to form a thermo- and pH-responsive nanogel, achieving size reduction through thermo- or pH-induced deswelling.
Article
Polymer Science
Farhad Jamali, Davood Hassanian-Moghaddam, Saeid Ahmadjo, Seyed Mohammad Mahdi Mortazavi, Yasaman Maddah, Mostafa Ahmadi
Summary: In this study, we successfully synthesized PE-PCL block copolymers containing both polar and non-polar segments through a two-step polymerization process. The block copolymers exhibit diverse crystal structures and phase separation between the PE and PCL segments. Additionally, the block copolymers act as compatibilizers in the blends. Rheology results show a high order-disorder transition temperature for the block copolymers.
EUROPEAN POLYMER JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Csilla Gyorgy, Steven P. Armes
Summary: It is well-known that polymerization-induced self-assembly (PISA) is a powerful technique for synthesizing colloidal dispersions of diblock copolymer nanoparticles. This review article aims to summarize the advances in PISA syntheses in non-polar media since the last review article in 2016. The article discusses PISA syntheses using RAFT polymerization in various non-polar solvents and examines the morphological transitions and rheological properties of the formed nanoparticles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Theiophile Pelras, Andras Eisenga, Gabor Ersek, Aldo Altomare, Giuseppe Portale, Marleen Kamperman, Katja Loos
Summary: Despite advancements in polymerization techniques, the synthesis of functional macromolecules can still be time-consuming, especially when incompatible chemistries are involved. In this study, one-pot synthesis of strong anionic/charge-neutral block copolymers is explored using a three-step process involving macroinitiator synthesis, chain extension through photomediated atom transfer radical polymerization, and in situ deprotection. The resulting block copolymers exhibit self-assembly properties in aqueous media and can be produced easily, demonstrating versatility in producing strong polymer amphiphiles.
Article
Polymer Science
Makoto Obata, Satoshi Masuda, Masaki Takahashi, Kohei Yazaki, Shiho Hirohara
Summary: The study investigated the impact of hydrophobic R groups on various properties of polymeric micelles loaded with ZnPc for photodynamic therapy. The presence of aromatic R groups led to larger micelles with loosely packed ZnPc aggregates, resulting in higher release and enhanced photodynamic effect compared to micelles with aliphatic R groups.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Sarthik Samanta, Shrabana Sarkar, Nikhil K. Singha
Summary: In this hi-tech world, smart coatings have attracted significant attention from materials scientists due to their versatile applications. The layer-by-layer (LbL) technique is commonly used to produce suitable smart coatings. In this study, a smart coating with healing, antifogging, and fluorescence properties was fabricated using the LbL assembly of an anionic amphiphilic block copolymer latex and cationic inorganic POSS nanoparticles. This finding provides a simple water-based LbL coating with low VOC and multifunctional properties, which can be potential material for various applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Svetlana V. Kurmaz, Evgenia O. Perepelitsina, Sergey G. Vasiliev, Irina A. Avilova, Igor I. Khodos, Vladimir A. Kurmaz, Dmitry A. Chernyaev, Yuliya V. Soldatova, Natalia V. Filatova, Irina I. Faingold
Summary: New amphiphilic VP-(di)methacrylate terpolymers of different monomer compositions and topologies were synthesized and their structures and properties were studied. The terpolymers showed amorphous structures and no cytotoxic effects. Encapsulation of hydrophobic D-alpha-tocopherol in terpolymer nanoparticles showed antioxidant activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Shannon M. North, Steven P. Armes
Summary: In this study, zwitterionic diblock copolymers were successfully synthesized using RAFT polymerization in a wholly aqueous environment, with the isoelectric point in aqueous solution tunable by varying monomer proportions. These copolymers show promise for potential applications.
Article
Materials Science, Multidisciplinary
Wenzhong Ma, Xiangyuan Song, Sicheng Yin, Hui Peng, Haicun Yang, Fanghong Gong, Chunlin Liu, Jing Zhong
Summary: In this study, a PMMA-b-P(PEGMA) copolymer was synthesized using RAFT polymerization, and different linear polymers were grafted onto mCNTs-SH surfaces through UV-initiated click chemistry to achieve a PVDF composite membrane containing oriented magnetic CNTs. Various analytical methods were used to verify the structures of the copolymers and analyze the magnetic response state and surface morphology of the magnetically functionalized CNTs. The composite membrane with oriented mCNTs showed improved pure water flux compared to a pure PVDF membrane.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Polymer Science
Kalyan Ramesh, Chelladurai Karthikeyan Balavigneswaran, Sonita A. P. Siboro, Vignesh Muthuvijayan, Kwon Taek Lim
Summary: Supramolecular micelles based on beta-cyclodextrin and adamantine-terminated linear-poly(lactic-co-glycolide) were successfully developed for on-demand drug release in cancer therapy. The micelles showed enhanced drug release in acidic environments, high cytotoxicity against cancer cells, and biocompatibility with non-cancerous cells, suggesting their potential as a robust and sustained anticancer drug delivery system.
Article
Polymer Science
Yuhan Jiang, Weijia Fan, Masatoshi Tosaka, Michael F. Cunningham, Shigeru Yamago
Summary: High molecular weight poly(butyl acrylate)s and diblock copolymers were successfully synthesized using water-soluble organotellurium chain transfer agents in water, achieving high monomer conversion rates and low viscosity due to stable latex formation. The presence of termination reactions in reversible deactivation radical polymerization has been a limiting factor for synthesizing HMW polymers, but high end group fidelity was confirmed through block copolymer synthesis under the current conditions.
Correction
Chemistry, Multidisciplinary
Kheyanath Mitra, Sumit Kumar Hira, Shikha Singh, Niraj Kumar Vishwakarma, Sambhav Vishwakarma, Uttam Gupta, Partha Pratim Manna, Biswajit Ray
Article
Biotechnology & Applied Microbiology
Hitaishi Khandal, Santosh Kumar Gupta, Vikas Dwivedi, Drishti Mandal, Nilesh Kumar Sharma, Niraj Kumar Vishwakarma, Lalita Pal, Megha Choudhary, Aleena Francis, Paheli Malakar, Nagendra Pratap Singh, Kapil Sharma, Senjuti Sinharoy, Narendra Pratap Singh, Rameshwar Sharma, Debasis Chattopadhyay
PLANT BIOTECHNOLOGY JOURNAL
(2020)
Article
Mathematics, Applied
Vijay Kumar Patel, Dhirendra Bahuguna
Summary: This article proposes an efficient numerical method combining matrix and Kronecker multiplication to solve a fractional partial differential equation arising from electromagnetic waves in dielectric media. The method transforms FPDE into an algebraic equation, and numerical algorithms and experiments are provided to demonstrate accuracy and efficiency. The simplicity and accuracy of the method make it highly effective with a small number of basis functions.
APPLIED NUMERICAL MATHEMATICS
(2021)
Article
Chemistry, Multidisciplinary
Niraj K. Vishwakarma, Shikha Singh, Sambhav Vishwakarma, Ajay Kumar Sahi, Vijay Kumar Patel, Shiva Kant, Sanjeev Kumar Mahto
Summary: By grafting DBU-ILs onto magnetically separable Fe3O4 nanoparticles, an accelerated platform for CO2 fixation was demonstrated. The method showed excellent recyclability and effectively fixed CO2 to synthesize important heterocyclic compounds such as quinazoline-2,4(1H,3H)-dione and benzimidazolone.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Neelima Varshney, Ajay Kumar Sahi, Suruchi Poddar, Niraj K. Vishwakarma, Gauri Kavimandan, Archisha Prakash, Sanjeev Kumar Mahto
Summary: In this study, scaffolds based on polyvinyl alcohol (PVA) and soy protein isolate (SPI) were prepared using the freeze-thaw method. The properties of the scaffolds were investigated, and it was found that the concentration of soy protein isolate significantly influenced the properties of the scaffolds. In vitro tests showed that the fabricated hydrogels had good compatibility and water vapor transmission rate suitable for wound dressing. The results demonstrated that the fabricated scaffolds had excellent biocompatibility, mechanical strength, porosity, stability, and degradation rate, indicating their potential for tissue engineering applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Multidisciplinary Sciences
Vijay Kumar Patel, Dhirendra Bahuguna
Summary: This paper presents the Legendre wavelet operational matrix method (LWOMM) for finding the numerical solution of two-dimensional hyperbolic telegraph equations (HTE), the proposed numerical scheme is accurate and efficient, validated through numerical experiments, convergence analysis of multidimensional Legendre wavelet approximation is investigated.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES
(2022)
Correction
Chemistry, Multidisciplinary
Karun Kumar Jana, Niraj Kumar Vishwakarma, Biswajit Ray, Saif A. Khan, Devesh K. Avasthi, Manjusri Misra, Pralay Maiti
Article
Biotechnology & Applied Microbiology
Jai Prakash, Himanshu Shekhar, Shyam Raj Yadav, Abhishek Kumar Dwivedy, Vijay Kumar Patel, Shikha Tiwari, Niraj Kumar Vishwakarma
Summary: This study demonstrates the green synthesis of AgNPs using aqueous leaves extract of E. pulchellum and their significant antifungal and antioxidant activities. Characterization methods such as FTIR spectroscopy and TEM were employed to determine the morphology and crystal structure of the synthesized AgNPs.
BIOMEDICAL AND BIOTECHNOLOGY RESEARCH JOURNAL
(2021)
Article
Polymer Science
Niraj Kumar Vishwakarma, Vijay Kumar Patel, Payel Mitra, K. Ramesh, Kheyanath Mitra, Sambhav Vishwakarma, Krishnendu Acharya, Nira Misra, Pralay Maiti, Biswajit Ray
Summary: The study successfully synthesized double hydrophilic ABA-type amphiphilic polyurethane-based triblock copolymers using a combination of polymerization techniques. The properties of the copolymers vary, with the critical micelle concentration of PNVP-b-PU-b-PNVP increasing with the length of the PNVP block, and the lower critical solution temperature of PNIPAM-b-PU-b-PNIPAM being 23.5 and 25.5 degrees Celsius, respectively.
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
(2021)
Article
Mathematics, Applied
Vijay Kumar Patel, Somveer Singh, Vineet Kumar Singh
Summary: This article discusses a new wavelets approximation scheme based on operational matrices for solving initial value complex partial differential equations arising from continuous wavelet transform. The algorithm developed converts CPDE into a system of PDEs, which is further converted into couple PDEs in terms of real and imaginary component. After implementation of wavelets scheme, the system of PIDEs is reduced into a system of algebraic equations.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2021)
Article
Chemistry, Multidisciplinary
N. Mallick, D. S. Pattanayak, R. K. Singh, V. K. Patel, U. K. Naik, M. Kumari, A. B. Soni, D. Pal
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Praveen Reddy Adiyala, Seungwook Jang, Niraj K. Vishwakarma, Yoon-Ho Hwang, Dong-Pyo Kim
Article
Chemistry, Analytical
Rajshree Singh, Kheyanath Mitra, Shikha Singh, Sudipta Senapati, Vijay Kumar Patel, Sambhav Vishwakarma, Archana Kumari, Jaydeep Singh, Susanta K. Sen Gupta, Nira Misra, Pralay Maiti, Biswajit Ray
