Article
Chemistry, Physical
Gurpreet Kaur, Preeti Garg, Navpreet Kaur, Mehak Mittal, Ganga Ram Chaudhary, Santosh L. Gawali, P. A. Hassan
Summary: This research prepared metallosomes using different metallosurfactants and studied their structure and stability using various analytical methods. The metallosomes showed high encapsulation efficiency towards fluorescein dye and formed ground state complexation with the protein Lyz, causing structural damage to the protein.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Azra Sourjah, Colin S. M. Kang, Cara M. Doherty, Durga Acharya, Luke A. O'Dell, Jennifer M. Pringle
Summary: This study reports on a new type of organic ionic plastic crystal (OIPC) based on morpholinium, and investigates the effects of cation and anion choice on the electrolyte properties. The results show significant differences in phase transition temperature, conductivity, and vacancy volume for different morpholinium-based OIPCs. These insights are important for developing new electrolytes with optimized thermal and transport properties for clean energy applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Bo Kyeong Yoon, Gamaliel Junren Ma, Hyeonjin Park, Abdul Rahim Ferhan, Nam-Joon Cho, Joshua A. Jackman
Summary: The adsorption behavior of lysozyme proteins strongly depends on the ethanol fraction in a non-monotonic fashion, influenced by competing effects of water and ethanol solvation on protein size and conformational stability. The degree of protein conformational flexibility has a greater impact on the hydrodynamic properties of lysozyme adlayers than solvation effects alone.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Alejandro B. Rodriguez-Navarro, Christian Grenier, Antonio G. Checa, Concepcion Jimenez-Lopez, Purificacion Sanchez-Sanchez, Diego Bertone, Nelson A. Lagos
Summary: This study provides a detailed analysis of the micro-nano-structure of giant barnacle shells and the interaction between the organic matrix and the mineral component. It reveals that incorporating organic matter into the mineral influences the morphology and orientation of calcite crystals, inducing isotropic straining of the calcite crystal lattice. Insoluble organic matrices primarily consist of chitin-rich membranes that promote the nucleation of calcite crystals, while soluble organic matter composed of proteins and polysaccharides affects calcium carbonate precipitation, leading to the formation of calcite with modified morphology.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Biochemistry & Molecular Biology
Mohd Basheeruddin, Sheeza Khan, Neesar Ahmed, Shazia Jamal
Summary: This study investigated the effect of diclofenac on the structure and stability of lysozyme. The results showed that diclofenac destabilized lysozyme and had a greater impact at physiological pH compared to acidic pH. Additionally, diclofenac induced structural changes in lysozyme and this destabilization process was entropy-driven.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2022)
Article
Chemistry, Applied
Jiaman Hu, Kaiyu Jiang, Caihuan Huang, Jie Zheng, Hua Zhou, Juanying Ou, Shiyi Ou
Summary: The study revealed that L-glycine and L-serine have low scavenging capacity for methylglyoxal individually, but can efficiently eliminate methylglyoxal and formaldehyde when the two aldehydes co-exist by generating imidazole salt. The formation of imidazole salts not only reduces the cytotoxicity of the precursors, but also can be utilized in food processing to scavenge harmful aldehydes.
Article
Chemistry, Physical
Zheng Shen, Jian Chen, Jilong Ge, Zhuoer Cai, Xiu-Ni Hua, Baiwang Sun
Summary: Three novel paliperidone sulfonate salts were successfully synthesized, showing enhanced thermal stability compared with paliperidone. Interactions of intermolecular hydrogen bonds were observed, resulting in increased solubility and dissolution rate. The formation and purity of the salts were confirmed by PXRD and IR analysis. This study provides valuable insights for improving paliperidone pharmaceutical formulations.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Xiangrong Li, Xiaoyi Ma, Congxiao Zhang, Ruonan Xu
Summary: In this study, the interaction between gold nanoparticles (AuNPs) of different sizes and trypsin/pepsin was comprehensively investigated. The results show that there is a strong binding ability between AuNPs and trypsin/pepsin, with 17 nm AuNPs exhibiting a higher binding ability. The presence of AuNPs also affects the structure and activity of trypsin and pepsin.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Maria Teresa Caccamo, Salvatore Magazu
Summary: In this study, infrared spectroscopy measurements were conducted on Lysozyme aqueous solutions in the presence of PolyEthylene Glycol (PEG 400) at different temperatures. The results showed the bioprotectant effectiveness of low molecular weight PEG and highlighted its role in thermal treatment.
Article
Chemistry, Multidisciplinary
Sabrina Hanafi, Djalal Trache, Abderrahmane Mezroua, Hani Boukeciat, Redha Meziani, Ahmed Fouzi Tarchoun, Amir Abdelaziz
Summary: The research aimed to find the optimal molar ratio of HNTO and AN to produce an energetic co-crystal, resulting in the development of a novel HNTO/AN co-crystal with enhanced properties compared to other co-crystals. Additionally, the catalytic activity of two energetic coordination polymers on the thermolysis of the developed co-crystal was evaluated, revealing significant decreases in decomposition temperature and increased heat release. The kinetic parameters of the systems were also determined, showing strong catalytic action on the decomposition of the co-crystal AN/HNTO, potentially making them key ingredients for future composite solid propellant formulations.
Article
Biochemistry & Molecular Biology
Lucia Gigli, Enrico Ravera, Vito Calderone, Claudio Luchinat
Summary: This study examines the interaction between lysozyme and silica and titania precursors. While no structural information is available for the interaction with the silica precursor, the interaction with a mononuclear titanium(IV) species is observed in a region rich in positive charges.
Article
Materials Science, Multidisciplinary
Jianxiao Bian, Yingtang Sun, Jinchang Guo, Xin Liu, Yang Liu
Summary: This study found that using MOT as a post-treatment additive can significantly improve the performance and stability of perovskite solar cells. MOT-doped PSCs retain 23.83% of the initial PCE after 2000 hours of continuous illumination, opening up prospects for high-performing and durable perovskite photovoltaic devices.
Article
Biochemistry & Molecular Biology
Mohammed J. Hakeem, Javed Masood Khan, Ajamaluddin Malik, Fohad Mabood Husain, Vivek Ambastha
Summary: Several food dyes, including sunset yellow, can induce amyloid fibrillation in proteins such as hen egg white lysozyme (HEWL). This study found that sunset yellow dye induced fast aggregation in HEWL without a lag phase, following an isodesmic pathway. The aggregates had a cross-beta secondary structure and were affected by salts and solvents. The results suggest that electrostatic and hydrophobic interactions play a role in sunset yellow-induced amyloid fibrillation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Multidisciplinary
Ravi A. A. Viradiya, Niraj Patel, Vinod K. K. Aswal, Vaibhav K. K. Patel, Sanjay H. H. Panjabi
Summary: The aggregation behavior of two morpholinium-based surface-active ionic liquids (SAILs) with aromatic counterions in aqueous solutions was systematically investigated through electrical conductivity, small-angle neutron scattering (SANS), surface tension (ST), and UV-vis spectroscopy measurements. The incorporation of aromatic counterions significantly enhanced the micellization properties compared to conventional halogenated SAILs. SANS analysis revealed a transition in structure from prolate ellipsoidal micelles to large unilamellar vesicles upon changing the counterion from salicylate to 3-hydroxy-2-naphthoate.
Article
Engineering, Chemical
Anusuya Pal, Amalesh Gope, Germano S. Iannacchione
Summary: Biological systems are complex and extracting information from them is challenging. This study examines the drying kinetics of drops containing protein, buffer saline, and liquid crystal, and finds that textural parameters can identify salt phase separation and birefringence activities during drying. Additionally, by tuning the concentration of protein and salt, the morphological patterns can be controlled.
Article
Chemistry, Physical
Tasnim Ahmed, Apurba De, Sumanta Paul, Anunay Samanta
Summary: By employing a combination of techniques, this study reveals individual particle-level understanding of charge carrier recombination pathways and dynamics in Bi-doped CsPbBr3 nanocrystals. The results show the heterogeneity of the system in terms of photoluminescence brightness/ efficiency of the individual nanocrystals in doped samples, with bright, dim, and dark types identified. The weak photoluminescence of the doped systems is mainly attributed to an ultrafast trapping process that turns a majority of the Bi-doped nanocrystals into dark ones.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Navendu Mondal, Apurba De, Sudipta Seth, Tasnim Ahmed, Somnath Das, Sumanta Paul, Rajesh Kumar Gautam, Anunay Samanta
Summary: The recent emergence of metal halide perovskites as triplet sensitizers has opened up new possibilities in optoelectronics. Understanding the band-edge energetics of perovskite nanocrystals, characterizing excitons, and investigating sensitization mechanisms of long-lived triplets are crucial in this area. Modulating deactivation processes in sensitized triplets for photon upconversion or room-temperature phosphorescence is also explored.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Physical
Sk Saddam Hossain, Sneha Paul, Anunay Samanta
Summary: The study investigates how deep eutectic solvents (DESs) affect the structural stability and conformational dynamics of cytochrome c, with a particular focus on the influence of trimethylglycine (TMG) combined with ethylene glycol (EG) or glycerol (GL). Single-molecule-based fluorescence correlation spectroscopy (FCS) and ensemble-based biophysical methods were employed to analyze the protein's behavior in hydrated DESs. The results suggest that the interaction strengths between DES constituents and water molecules play a crucial role in determining the behavior of cytochrome c in DESs.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Chemistry, Physical
Sumanta Paul, Tasnim Ahmed, Somnath Das, Anunay Samanta
Summary: This study demonstrates the direct synthesis of highly luminescent perovskite nanocrystals with PLQY as high as 80-99% by selecting appropriate halide precursors and optimizing the Pb:X precursor ratio. Time-resolved PL and ultrafast pump-probe studies reveal the impact of the Pb:X precursor ratio on carrier recombination processes. By using excess halide precursor, the carrier trapping effect that impairs PLQY can be effectively alleviated.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Rajesh Kumar Gautam, Somnath Das, Anunay Samanta
Summary: Studies have shown that cesium lead halide perovskite nanocrystals treated with sodium thiosulfate not only improve the photoluminescence quantum yield but also increase stability under different environmental stresses. This enhancement is achieved through the formation of Pb-S bonds between undercoordinated surface Pb and thiosulfate.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Rajesh Kumar Gautam, Somnath Das, Anunay Samanta
Summary: The treatment of blue-emitting, cyan-emitting, and green-emitting perovskite nanocrystals improves their photoluminescence quantum yield and stability, making them suitable for various lighting and display applications.
Article
Chemistry, Physical
Tasnim Ahmed, Sumanta Paul, Anunay Samanta
Summary: Lead halide perovskites are crucial for solar photovoltaic applications, and understanding the hole transfer process is essential for their performance. This study investigates the influence of hole transfer from FAPbBr(3) to phenothiazine on the photoluminescence blinking dynamics of nanocrystals. The results reveal the heterogeneous nature of the hole transfer dynamics and the formation of a short-lived charge-separated state.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Sumanta Paul, Anunay Samanta
Summary: In this study, stable and highly luminescent CsPbI3 nanocrystals were successfully obtained by modifying the conventional hot-injection method with NH4I as an additional precursor. The excellent characteristics of these nanocrystals, such as the suppression of photoluminescence blinking, could be attributed to the replacement of surface Cs+ with NH4+ ions. These CsPbI3 nanocrystals show great potential for optoelectronic and solar photovoltaic applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Sumanta Paul, Gautam Kishore, Anunay Samanta
Summary: In this study, the photoluminescence blinking phenomenon of quantum confined CsPbBr3 nanocrystals with different sizes was investigated. The recombination pathways and dynamics of the photogenerated charge carriers were analyzed in both immobilized and fluid conditions. The results showed that smaller nanocrystals had a higher carrier trapping rate and a more difficult detrapping process. These findings provide valuable information for designing photoluminescent samples of CsPbBr3 nanocrystals for optoelectronic applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Chemistry, Physical
Madushmita Hatimuria, Plabana Phukan, Soumabha Bag, Jyotirmoy Ghosh, Krishna Gavvala, Ashok Pabbathi, Joydeep Das
Summary: Carbon dots, as one of the most promising nanomaterials, have a wide range of applications in bioimaging, sensing, and biomedicine due to their small size, photostability, tunable fluorescence, and electrical properties. Green carbon dots synthesized from natural and renewable sources have additional advantages such as favorable biocompatibility, wide availability, low production cost, and eco-friendliness. This review provides an update on the latest research of green carbon dots in cancer therapy and electrochemical sensors, as well as discusses the toxicity assessment, challenges, and future directions of research on their anticancer and sensing applications.
Article
Chemistry, Multidisciplinary
Madushmita Hatimuria, Joydeep Das, Krishna Gavvala, Soumabha Bag, Ashok Pabbathi
Summary: This review discusses the activity and stability of laccase in various deep eutectic solvents (DESs), as well as the correlation between laccase interaction with different types of DESs components and descriptors that regulate laccase activity. It highlights the need for future research on laccase-DESs systems to develop green and sustainable methods for a wide range of applications.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Nanoscience & Nanotechnology
Somnath Das, Modasser Hossain, Anunay Samanta
Summary: A direct method of obtaining CsPbCl3 NCs with exceptional characteristics is reported using diphenylphosphoryl chloride as an efficient chloride precursor and preventing protonation of the amine ligand. High PLQY and remarkable stability of these NCs are attributed to the strong L-type coordination of the unprotonated amine ligand with Pb2+ on the surface. Using these NCs as emitting materials, a high-performance violet LED with ultrapure PL at 410 nm and narrow bandwidth is achieved.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ramavath Babu, Anunay Samanta, Seelam Prasanthkumar, Lakshminarayana Polavarapu
Summary: In this study, hybrid Mn(II) halide (Cl, Br, and I) single crystals with near-unity photoluminescence quantum yield (PLQY) were prepared using the organic cation DMAPH and controlled Zn2+ doping/alloying. The PLQY of these crystals was stable for more than 60 days and could be improved by selective organic cations and doping/alloying strategies.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Somnath Das, Anunay Samanta
Summary: Direct synthesis of high-quality APbCl(3) and APbBr(3) nanocrystals has been achieved using the chloro- and bromo-analog of DIDMH, providing a generic approach for the synthesis of all APbX(3) nanocrystals. These nanocrystals exhibit excellent stability, high photoluminescence quantum yields, and remarkable performance under various conditions.
Article
Chemistry, Physical
Sumanta Paul, Anunay Samanta
Summary: By adding NH4I as a precursor, stable and highly luminescent CsPbI3 nanocrystals were successfully synthesized in this study, with significantly suppressed PL blinking. These CsPbI3 nanocrystals can be used as promising materials for single-photon emitters and optoelectronic and solar photovoltaic applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)