Article
Chemistry, Physical
Asyraf Hanim Ab Rahim, Noraini Abd Ghani, Noorhafizah Hasanudin, Normawati M. Yunus, Ninna Sakina Azman
Summary: This work presents an in-depth kinetic thermal degradation comparison between traditional monocationic and the newly developed dicationic ionic liquid (IL), both coupled with a bromide (Br-) anion by using non-isothermal thermogravimetric analysis. Thermal analyses of 1-butyl-1-methylpyrrolidinium bromide [C(4)MPyr][Br] and 1,4-bis(1-methylpyrrolidinium-1-yl)butane dibromide [BisC(4)MPyr][Br-2] were conducted at a temperature range of 50-650 degrees C and subjected to various heating rates, which are 5, 10, 15, 20 and 25 degrees C/min. Thermogravimetric analysis revealed that dicationic IL, [BisC(4)MPyr][Br-2] is less thermally stable compared to monocationic [C(4)MPyr][Br]. A detailed analysis of kinetic parameters, which are the activation energy (E-a) and pre-exponential factor (log A), was calculated by using Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO) and Starink. This study revealed that the average E-a and log A of [BisC(4)MPyr][Br-2] are lower than [C(4)MPyr][Br], which may be contributed to by its low thermal stability. Conclusively, it proved that the E-a and log A of ILs are strongly related to the thermal stability of ILs.
Article
Chemistry, Physical
Marta Wojcieszak, Aneta Lewandowska, Agnieszka Marcinkowska, Lukasz Palkowski, Maciej Karolak, Andrzej Skrzypczak, Anna Syguda, Katarzyna Materna
Summary: A series of monocationic and dicationic surface-active ionic liquids (SAILs) were synthesized and characterized. The structures of SAILs were confirmed by spectral analyses of 1H NMR and 13C NMR. The relationship between the structure, surface activity, and biological action of newly SAILs on bacteria and fungi was investigated.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Jean C. B. Vieira, Marcos A. Villetti, Clarissa P. Frizzo
Summary: This study investigates the thermal stability and decomposition mechanisms of dicationic ionic liquids through experimental and kinetic analysis. The results show that [Bis(C4MIM)][C6COO](2) is the most stable among the DILs, and an increase in the cation's spacer chain leads to a decrease in stability. Additionally, multiple reactions were found to occur during the decomposition process.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Trupti C. Nirmale, Nageshwar D. Khupse, Ramchandra S. Kalubarme, Milind Kulkarni, Anjani J. Varma, Bharat B. Kale
Summary: Ionic liquids as next-generation electrolytes have high ionic conductivity and electrochemical stability at high temperatures. Subtle structural changes can improve diffusion and enhance cyclability and performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
E. P. Kovalev, A. S. Shalygin, A. A. Shubin, I. Kozhevnikov, S. A. Prikhod'ko, N. Yu Adonin, S. G. Kazarian, O. N. Martyanov
Summary: In this study, the interaction between light hydrocarbons and a series of 1-alkyl-3-methylimidazolium tetrafluoroborate [CnMIM][BF4] ILs was investigated using in situ ATR-FTIR spectroscopy. The results showed that an increase in the alkyl chain length of the ILs led to an increase in the solubility of both ethane and ethylene. There was a significant interaction between ethylene and IL, resulting in a higher dissolution of ethylene compared to ethane. The absorption bands of sorbed ethylene exhibited a blue-shift compared to liquid ethylene. It was also found that two hydrogen atoms of ethylene can form a hydrogen bond with the anion of the IL.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Ayman M. Atta, Hamad A. Al-Lohedan, Abdelrahman O. Ezzat
Summary: The new geminal dicationic ionic liquids (ILs) showed promising demulsification performance for stable sea water-in-heavy petroleum crude oil emulsions, with lower melting and glass transition temperatures. Their surface activity, micellization behavior, and adsorption at various interfaces were investigated, showing effective interactions with asphaltenes.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Sara Fallah Ghasemi Gildeh, Hossein Roohi, Morteza Mehrdad, Kurosh Rad-Moghadam, Khatereh Ghauri
Summary: A new type of dication ionic liquids (DILs) and their corresponding monocation ionic liquids (MILs) were synthesized in this study. Thermal decomposition analysis showed that the DILs and MILs containing [NTf2]- anions were more stable than those containing [OTF]-, in line with the greater dispersion energy calculated for [NTf2]- based ILs. Additionally, cation-anion interactions were investigated using DFT-M06-2X functional, revealing stronger hydrogen bonding in ILs containing [OTF]- anions.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Review
Chemistry, Physical
Fabiana Pandolfi, Martina Bortolami, Marta Feroci, Anastasia Fornari, Vincenzo Scarano, Daniele Rocco
Summary: Imidazolium-based dicationic ionic liquids have gained significant attention in the field of organocatalysis due to their structural variations and potential to improve physical and chemical properties. They are considered as possible alternatives to common catalysts in organic synthesis, especially when their bidentate nature can positively affect catalytic activity.
Article
Environmental Sciences
Yu Xing, Jing Li, Jingjing Yang, Junyi Li, Weiyi Pang, Francis L. Martin, Li Xu
Summary: This study used spectrochemical techniques to investigate the cytotoxicity of nanoplastics with different surface charges in HepG2 cells. The results showed that all three types of nanoplastics caused biomolecular alterations in cells, affecting cellular lipids, proteins, amino acids, and genetic material. Surface modifications were found to lead to cellular biochemical changes and adverse biological effects, with PS-NH2 exhibiting higher toxicity compared to PS or PS-COOH.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Multidisciplinary
Huijie Zuo, Xiangjian Chen, Yingli Ding, Liang Cui, Baomin Fan, Li Pan, Kunyu Zhang
Summary: Novel mPEG-ILs were synthesized and studied as green plasticizers for PLA material. Characterization results showed that mPEG-ILs have a significant plasticizing effect on PLA, greatly enhancing its ductility.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Spectroscopy
Daniel Martin, Tercia Lopes, Sandra Correia, Jorge Canhoto, Maria Paula M. Marques, Luis A. E. Batista de Carvalho
Summary: This study presents the first complete vibrational analysis of tamarillo fruit, revealing the location and amount of important nutraceutical compounds. Different chemical components were found in different parts of the fruit, especially phenolic compounds, unsaturated fatty acids/esters, and polymeric chains. This valuable information provides insights into the nutritional value of tamarillo fruit.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Review
Chemistry, Multidisciplinary
Qiuqi Zhang, Lei Zhao, Guoliang Qi, Xiaoru Zhang, Cheng Tian
Summary: The coronavirus pandemic poses a significant threat to human health, and early detection and prevention of further escalation are of utmost importance. The current method of sample collection and RNA testing using the nasopharyngeal swab method and real-time polymerase chain reaction has limitations. Optical techniques, such as optical sensing, spectroscopy, and imaging, show promise in virus detection due to their speed, accuracy, and cost-effectiveness. This mini review summarizes the development of vibrational spectroscopy techniques for the detection of the SARS-CoV family, highlighting their advantages and future possibilities in the field of photonics-based devices for COVID-19 detection.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Physical
E. P. Kovalev, A. S. Shalygin, S. A. Prikhod'ko, N. Yu Adonin, O. N. Martyanov
Summary: In this study, the absorption of acetylene by ionic liquids (ILs) was investigated using in situ ATR-FTIR spectroscopy. The analysis revealed a correlation between the spectral changes of absorbed acetylene and the nature of ILs.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Yuval Simha, Gil Daniels, Amalya Goldman, Elihay Kuniavsky, Dmitry Tsvelikhovsky
Summary: A new strategy for direct access to fully substituted polycyclic imidazolium salts using alpha-enaminones and proline as the reagents is reported. This open-flask operation is a catalyst-, metal-, and Lewis acid-free green process, which does not require an ion-exchange step. It can produce good yields with minimal formation of side products, and is not limited to aryl substituents.
Article
Environmental Sciences
Li-Xin Hu, Qian Xiong, Wen-Jun Shi, Guo-Yong Huang, You-Sheng Liu, Guang-Guo Ying
Summary: This study evaluated the cytotoxicity of [C(10)mim]Cl and elucidated its main toxic mechanism in human cervical carcinoma cells, revealing that it can damage cellular membrane structure, affect cell ultrastructure and cause oxidative damage leading to inhibition of cell proliferation. The findings demonstrate that membrane structure is the key target, and membrane damage is involved in [C(10)mim]Cl induced cytotoxicity.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Physical
Boumediene Haddad, Silvia Antonia Brandan, Mohammed Amin Assenine, Annalisa Paolone, Didier Villemin, Serge Bresson
JOURNAL OF MOLECULAR STRUCTURE
(2020)
Article
Chemistry, Physical
Tayeb Zaoui, Mansour Debdab, Boumediene Haddad, El Habib Belarbi, Yassine Chaker, Mustapha Rahmouni, Serge Bresson, Vincent Baeten
Summary: In this study, a new hydroxyl-functionalized ionic liquid was synthesized and characterized through spectroscopic analysis, vibrational spectroscopy, and thermal property investigations.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Mohammed Amin Assenine, Boumediene Haddad, Annalisa Paolone, Silvia Antonia Brandan, Mimanne Goussem, Didier Villemin, Mostefa Boumediene, Mustapha Rahmouni, Serge Bresson
Summary: In this study, an ionic liquid based on Aliquat(+) with the fluorinated anion NTf2- was successfully prepared through anionic exchange. The structure of the obtained ionic liquid was characterized using various spectroscopic techniques, and its thermal properties were investigated. Theoretical calculations predicted a hexadentate coordination mode between the cation and anion in the IL.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Mohammed Amin Assenine, Boumediene Haddad, Annalisa Paolone, Silvia Antonia Brandan, Didier Villemin, Mostefa Boumediene, Mustapha Rahmouni, Serge Bresson
Summary: The structure and vibrational characteristics of the Aliquat(+)Cl- ionic liquid were analyzed using experimental and theoretical methods, revealing the significant influence of the chloride ion on the properties of the cation. The IL containing chloride showed higher reactivity compared to the one containing NTf2-, indicating a strong dependence of IL properties on the anion.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Bekhaled Fetouhi, Boumediene Haddad, Silvia Antonia Brandan, Annalisa Paolone, Didier Villemin, Mostefa Boumediene, Mustapha Rahmouni, Serge Bresson
Summary: In this study, a new ionic liquid was successfully synthesized and characterized using various spectroscopic techniques. The influence of Br on the properties of the ionic liquid was observed through changes in dipole moment vector orientation and direction, resulting in a higher reactivity of the IL. Theoretical calculations and experimental data showed reasonable correlations, indicating the stability and characteristics of the synthesized IL.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Boumediene Haddad, Silvia Antonia Brandan, Bekhaled Fetouhi, Mostefa Boumediene, Annalisa Paolone, Didier Villemin, Mustapha Rahmouni, Serge Bresson
Summary: A new ionic liquid [C-8 DABCO(+)][PF6-] was synthesized and its structure was confirmed by various spectroscopic techniques. Theoretical studies revealed high solvation energy of the IL in aqueous solution, indicating possible cation-anion interactions.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Multidisciplinary
Sabrina Bouriche, Mourad Makhlouf, Mohamed Kadari, Hind Bakli, Yacine Hamoumi, Bouabdellah Benaicha, Aicha Taibi, Zoubir Benmaamar
Summary: The rapid proliferation and intensive use of electronic devices have led to an increase in electronic pollution, and the emergence of flexible polymer composites, such as graphene, shows promise in electromagnetic shielding. This study focuses on developing a scalable and industrially viable G/PVC composite with low percolation threshold and high electromagnetic interference shielding efficiency.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Mustapha El Hadri, Serge Bresson, Albane Lecuelle, Fatiha Bougrioua, Vincent Baeten, Van Hung Nguyen, Vincent Faivre, Matthieu Courty
Summary: The effects of the proportion of cocoa butter, cocoa butter equivalent, and milk fatty acid on the structural organization of the final mixtures were determined. Analysis using various techniques revealed the structural features and vibrational modes of different mixtures.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
M. Belhocine, A. Ammari, A. Haouzi, F. Dergal, M. Debdab, H. Belarbi
Summary: This study investigates the properties of the [VBmim+, Cl-]/montmorillonite nanocomposite, showing good thermal stability and conductivity characteristics.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
M. Kadari, M. Makhlouf, M. Kaid, Z. Benmaamar, D. Villemin
Summary: Amino phosphonic acids can be incorporated into solid supports to solve the problem of using organic solvents in liquid-liquid extraction. In this study, Amino-Cyclo-Hexyl Phosphonic Acid was incorporated into the interlayer space of Ni/Al-LDH to synthesize a new hybrid material, Ni/Al-ACHPA. The material showed good adsorption performance for Ce+3 ions, with a high recovery rate achieved under optimal conditions.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2022)
Article
Spectroscopy
Boumediene Haddad, Deepak K. Pandey, Dheeraj K. Singh, Annalisa Paolone, Mokhtar Drai, Didier Villemin, Serge Bresson
Summary: In this study, four branched methylated and protonated ionic liquids were synthesized and investigated using NMR, IR, and Raman spectroscopy. The vibrational spectra were found to be largely unaffected by methylation but showed significant frequency changes with varying anions. Quantum chemical calculations were performed to determine the electronic structure, energetic stability, and vibrational properties, and the results were analyzed using the quantum theory of atoms in molecules. The calculations showed that the most energetically stable configuration for all ionic pairs was with the anions located close to the C-2 position of the imidazolium cation.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Taqiyeddine Moumene, Mohamed Kadari, El-habib Belarbi, Noureddine Boudali, Mohamed Said Benyahia, Albert Nguyen Van Nhien, Loic Dupont, Serge Bresson
Summary: In this study, the influence of an ionic liquid (IL) on the structural, optical and morphological properties of ZnO nanoparticles (NPs) is investigated through a comparative study with NPs synthesized by a conventional method. Characterization techniques including X-ray diffraction, infrared spectroscopy, UV-Visible spectrometry and transmission electron microscopy are employed. The results show that the IL reduces the crystallite size as observed by XRD, influences the energy gap of ZnO NPs as evidenced by UV-Vis spectra, and reduces the size of the nanoparticles as observed by TEM. These findings suggest that the IL can be utilized to control the size and properties of ZnO NPs.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Boumediene Haddad, Silvia Antonia Brandan, Bekhaled Fetouhi, Annalisa Paolone, Mostefa Boumediene, Didier Villemin, Mustapha Rahmouni, Serge Bresson
Summary: A novel ionic liquid was successfully synthesized and characterized in terms of its structure and thermal stability. The intermolecular interactions within the ionic liquid were also investigated. This study provides important insights for the design and application of ionic liquids.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Rana Kadri, Serge Bresson, Thierry Aussenac
Summary: Among natural polymers, alginate extracted from algae is well known for its remarkable properties, such as biocompatibility, biodegradability and low toxicity. In this study, the physicochemical properties of alginate and starch-based biofilms reinforced by glycerol were optimized by Raman spectroscopy. The vibrational study showed a link between the mass proportion of alginate in water and hydrogen bond contributions in the alginate-based biofilms.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
M. Kadari, M. Makhlouf, O. Ould Khaoua, M. Kesraoui, S. Bouriche, Z. Benmaamar
Summary: The modified Hummer method was used to prepare graphene oxide (GO) and magnetic graphene oxide (α-Fe2O3/GO) in this study. The adsorptive capacity of GO and α-Fe2O3/GO towards Cd2+ and Pb2+ was studied, and the adsorption process and mechanism were explored. The results showed that α-Fe2O3/GO is a promising adsorbent for Cd2+ and Pb2+, with a high adsorption rate and the ability to be recovered and reused through magnetism.
CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Xinlei Chen, Shiyi Chen, Xuele Lin, Jingxuan Zhou, Xingjun Gao, Yaoqi Zhen, Xiaodan Ma, Shouwen Jin, Linfang Shi, Hui Liu, Daqi Wang
Summary: Nine mixed-ligand Cd2+ complexes with different geometric structures were synthesized and characterized. The complexes exhibit various coordination modes and form both intra- and intermolecular hydrogen bonds.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Rupali Mahajan, Abhishek Sharma, Bhagyashree Patra, Lijo Mani, Parul Grover, Sandeep Kumar, Santosh Kumar Guru, Gananadhamu Samanthula, Amol G. Dikundwar, Amit Asthana
Summary: This research article provides a comprehensive characterization and toxicological assessment of a photoisomeric impurity of the antianemic drug Roxadustat. The impurity has a distinct structure compared to the drug and its formation due to light exposure is a concern. Through various experiments, including single crystal XRD, physicochemical characterization, and in vitro cytotoxicity assays, the researchers confirmed the structure of the impurity, evaluated its conversion with Roxadustat, and assessed its toxicological activity. These findings contribute to the understanding of drug stability, safety, and formulation development.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Laila S. Alqarni, Azzah M. Alghamdi, Nuha Y. Elamin, A. Rajeh
Summary: The solution casting method was used to produce a new type of nanocomposites made of chitosan, gelatin, and co-doped ZnO nanoparticles. The addition of 3.5% co-doped ZnO nanoparticles improved the physicochemical characteristics and antimicrobial effects of the nanocomposites, indicating their significant potential in food packaging and energy storage.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Ruchi Gaur
Summary: The structure and intermolecular interactions of a newly synthesized bis-chalcone THXA were studied using experimental and computational methods. The importance of non-covalent interactions such as pi center dot center dot center dot pi, C-H center dot center dot center dot S, and C-H center dot center dot center dot pi was revealed.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Andrii Bazylevich, Leonid Patsenker, Sarit Aviel-Ronen, Gary Gellerman
Summary: Drug combination therapy is commonly used for treating various skin disorders, but its effectiveness is often limited. In this study, researchers synthesized conjugates of anti-pigmenting drugs and hyaluronic acid (HA) to improve treatment efficacy. These HA-drug conjugates exhibited measurable drug release profiles and demonstrated superior depigmentation effects compared to control groups in a swine model.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Xiaodan Ma, Xinlei Chen, Yaoqi Zhen, Xunjie Zheng, Chengzhe Shi, Shouwen Jin, Bin Liu, Bin Chen, Daqi Wang
Summary: Cocrystallization experiments between minoxidil and aryl acids coformers resulted in the successful formation of multi-component samples. The nature of these samples was determined using various techniques and their structural and supramolecular aspects were investigated. The outcomes revealed the importance of nonbonding contacts and different types of interactions in stabilizing and expanding the crystal structures.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Najla A. Alshaye, Magdy A. Ibrahim, Al-Shimaa Badran
Summary: The chemical behavior of 3-substituted-6,8-dimethylchromones towards phenylhydrazine was examined. Different reaction conditions produced various products, and the molecular geometries and reactivity descriptors of the compounds were also investigated. The results suggest that these compounds are suitable for nonlinear optical applications.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Hayette Alliouche, Houria Bouria, Rafik Bensegueni, Mounia Guergouri, Abdelmalek Bouraiou, Ali Belfaitah
Summary: In this paper, a combined experimental and theoretical study was conducted to synthesize and characterize new 2-quinolone-piperidine and -morpholine hybrids. The results from experiments were validated using computational calculations, and the affinity between these compounds and Acetylcholinesterase/Butyrylcholinesterase was estimated through molecular docking.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Wei-Min Chen, Juan-Juan Shao, Yi Zhang, Zhen-Dong Xue, Peng-Lai Liu, Jian-Ling Ni, Li-Zhuang Chen, Qiang Gao, Fang-Ming Wang
Summary: This study synthesized and characterized a novel Mn-based LMOF, and achieved good results in detecting heavy metal Al3+ in water, showing good stability, high selectivity and sensitivity. This provides new insights into the potential applications of Mn-based MOFs in chemical sensing.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Jun-Xia Li, Yi-Jing Lu, Ke-Ying Quan, Li-Bing Wu, Xun Feng, Wei-Zhou Wang
Summary: This study synthesized two cobalt(II) complexes and analyzed their crystal structures using single-crystal X-ray diffraction. The results showed that the crystal structures of these complexes were different, and they exhibited different crystal packing and magnetic properties.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Yang Li, Yan Zhang, Hong Xu, Min Li, Zhen Li, Zi-yu Song, Ji-shi Chen, Yan-Jun Liu, Yong Sun, Zhao Yang
Summary: This study reports the synthesis and solid-state characterization of a new pharmaceutical cocrystal, PRO-BPE, which can enhance the solubility of the highly water-insoluble prodrug probenecid. The PRO-BPE cocrystals were found to have superior water solubility compared to pure PRO. This research provides valuable insights into improving the solubility of poorly soluble drugs.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Lucas G. B. Felicio, Bianca B. M. Vieira, Ivana S. Lula, Renata Diniz, Frank Alexis, Flavio B. Miguz, Frederico B. De Sousa
Summary: A novel spiropyran derivative was synthesized for heavy metals sensing in water. The results demonstrated that the new derivative can serve as a rapid, sensitive, and simple tool for detecting Hg2+ ions in water with high selectivity.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Junqing Meng, Jie Wang, Lijuan Wang, Chunhui Lyu, Haiyan Chen, Yingpei Lyu, Baisheng Nie
Summary: Material modification with low surface energy can achieve lower surface free energy on micro-and nano-rough structures, which is crucial for developing superhydrophobic surfaces. In this study, attapulgite (APT) was modified with alkylamine, alkylammonium salt, and stearic acid, and the interaction between low surface materials and attapulgite was explained. The results showed that the hydrophobicity of APT was significantly modified by the modifiers, and the surface free energy of the composites first decreased and then increased with increasing molecular number of low surface energy monomers.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Karan Goswami, Dipak Das, Parthasarathi Bera, Sounak Roy, Md. Motin Seikh, Prasanta Kumar Sinha, Arup Gayen
Summary: This work presents the development of a simple and highly active heterogeneous Pd catalyst for Suzuki-Miyaura carbon-carbon cross-coupling reaction. The NiPdFe-1 catalyst shows the best activity and stability among the prepared catalysts. It efficiently promotes the coupling reaction between aryl bromide and phenyl boronic acid under mild reaction conditions with high isolated yields.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Ekta Pardhi, Devendra Singh Tomar, Rahul Khemchandani, Gananadhamu Samanthula, Pankaj Kumar Singh, Neelesh Kumar Mehra
Summary: The main aim of this study was to prepare a drug-drug coamorphous system to improve the physiochemical properties, solubility and stability of Apremilast and Indomethacin. Various solid-state characterization techniques were used to characterize the prepared system. Molecular level interactions were studied using molecular modeling and ATR-FTIR and 1H NMR. Solubility and dissolution studies showed the benefits of the coamorphous system. The system was found to be stable for a period of five months. Permeation study also demonstrated improved flux for both drugs compared to their crystalline forms. The coamorphous system showed anti-psoriatic and anti-melanogenic activity based on molecular docking results. Overall, the developed CAM-based supersaturated system exhibited improved physicochemical properties and physical stability.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
