Article
Chemistry, Multidisciplinary
Shubham Sharma, Anjani, Mobina Kouser, Monika Gupta
Summary: The development of a graphene-based nanocatalyst (Pd@NGO) with large surface area offers potential as an efficient tool for various organic transformations. Characterization techniques confirmed the mesoporous texture of the nanocatalyst and its successful doping with nitrogen. The nanocatalyst showed high efficiency in Suzuki coupling reaction, reduction of nitro compounds, and photodegradation of methyl orange.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Themba D. Ntuli, Ludwe L. Sikeyi, Faria Dziike, Neil J. Coville, Edward N. Nxumalo, Manoko S. Maubane-Nkadimeng
Summary: Waste cooking oil was converted into onion-like nanocarbons (OLNCs) through flame pyrolysis and then combined with TiO2 to form TiO2/OLNC nanocomposites using hydrothermal treatment. The mass ratio of TiO2 to OLNCs was varied, while the mass of TiO2 was kept constant. The nanocomposites exhibited enhanced photocatalytic activity and degradation efficiency for methyl orange due to the high adsorption efficiency of OLNCs and the hindrance of electron-hole recombination.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Tesfaye Haile Habtemariam, V. J. T. Raju, Yonas Chebude
Summary: The photocatalytic performance of {[Cu-2(Fu)(2)(BPY)]center dot H2O}(n), a pillared-layer metal-organic framework (MOF), is studied for the degradation of methyl orange, a toxic and non-biodegradable dye. The MOF, in the presence of UV light, efficiently degrades 96% of 10-ppm methyl orange after 140 min irradiation at pH 5.2 with a MOF loading of 0.25 g L-1. The MOF can be recycled five times with maintained crystallinity and degradation efficiencies ranging from 96% to 53% in each cycle.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Myroslav Sprynskyy, Paulina Szczyglewska, Izabela Wojtczak, Izabela Nowak, Andrzej Witkowski, Boguslaw Buszewski, Agnieszka Feliczak-Guzik
Summary: A new catalyst based on biosilica doped with palladium(II) chloride nanoparticles was prepared and tested for efficient degradation of methyl orange in water solution under UV light excitation. The photocatalyst exhibited excellent photodegradation activity toward MO degradation under UV light irradiation, showing rapid photocatalytic degradation within one minute with an efficiency reaching over 98% after 75 min. The proposed mechanism of photodegradation involves the generation of strongly oxidizing species such as HO· and O2·- radicals from diatom biosilica under the influence of UV light excitation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Elena Madalina Mihai, Iuliana Mihalache, Anca-Ionela Istrate, Cristina Antonela Banciu, Cosmin Romanitan, Oana Brincoveanu, Eugenia Tanasa, Alexandra Banu, Lucia Monica Veca
Summary: By synthesizing and characterizing the TiO2/3D-GF/Ni hybrid, it was found that this nanomaterial could decolorize methyl orange dye by over 90% under simulated sunlight irradiance. Additionally, the efficiency reached 99.5% after three successive cycles.
Review
Energy & Fuels
Harish Kumar, Rahul Sharma, Ankita Yadav, Rajni Kumari
Summary: This review article discusses the advancements made in energy storage devices using reduced graphene oxide (rGO) coupled with different metal oxide nanoparticles, including their mechanisms of action and enhanced energy storage capacity.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Mehran Alavi, Pragathi Kamarasu, David Julian McClements, Matthew D. Moore
Summary: Metal-based nanoparticles can act as effective antiviral agents against various types of viruses. Their antiviral activities can be modulated by different preparation methods and surface modifications. These nanoparticles can be used as aqueous dispersions or incorporated into composite materials. The major antiviral mechanisms include disrupting viral attachment, generating reactive oxygen species, and inactivating viral glycoproteins. The physicochemical properties of the nanoparticles, such as size and surface modification, play a role in their antiviral efficacy.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Water Resources
Naseer Ahmad Khan, Khalid Saeed, Idrees Khan, Tamanna Gul, Muhammad Sadiq, Ala Uddin, Ivar Zekker
Summary: This study successfully synthesized nickel oxide nanoparticles and nickel oxide/nanoclay nanocomposites, and investigated their photodegradation effect on Orange II dyes in aqueous solution. The results showed that both materials exhibited high degradation efficiency for Orange II under certain conditions.
APPLIED WATER SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
A. R. Kuldeep, R. D. Waghmare, K. M. Garadkar
Summary: In this study, a simple, low-cost, and green method was used to synthesize a TiO2/CDs photocatalyst using kitchen waste product. It was found that the nanocomposite with size less than 20 nm can be produced by grafting carbon dots on TiO2 using sol-gel method. The CDT-2 composite showed enhanced photocatalytic activity compared to TiO2.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Mehran Alavi, Rajender S. Varma
Summary: Overcoming multidrug resistance mechanisms by smart application of metal nanoparticles and metal oxide nanoparticles is an attractive option. The use of plant sources for phytosynthesis and modification offers eco-friendly, biodegradable, and biocompatible alternatives.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2021)
Article
Materials Science, Multidisciplinary
Lili Li, Ke Jiang, Wei Li, Yanhua Suo, Jing Shu, Chunhong Nie
Summary: Polyaniline (PANI) modified carbon-containing SnO2 composites (SnO2/Carbon/PANI) were successfully synthesized via a simple liquid phase synthesis method. The compositions, structures, and properties of the synthesized samples were characterized, and the degradation mechanism of the photocatalysts was proposed. Photocatalytic tests showed that the SnO2/Carbon/PANI composites exhibited excellent photocatalytic activity for methyl orange (MO) degradation under visible light irradiation, with a degradation rate of 98% achieved within 10 minutes. The composites maintained their excellent photocatalytic activity after three cycles, making them a promising candidate for further industrial applications.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Nnabuk Okon Eddy, Unwana Edo Edet, Joseph Olusola Oladele, Herientta Ijeoma Kelle, Emeka Chima Ogoko, Anduang O. Odiongenyi, Paul Ameh, Richard Alexis Ukpe, Raphael Ogbodo, Rajni Garg, Rishav Garg
Summary: This study presents a method for synthesizing novel nanocomposites of Na-Ca-Al-Si oxides, which exhibit high surface area and unique crystal parameters. The synthesized nanocomposites are effective photocatalysts for degrading methyl orange dye in water, showcasing high efficiency and significant kinetic models.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Materials Science, Multidisciplinary
Reena Solanki, Marketa Jarosova, Waleed Khalid Al-Azzawi, Pavel Machek, Forat H. Alsultany, Aliakbar Dehno Khalaji, Zuhair Al Mashhadani
Summary: Facile and low-cost sonochemical-assisted route accompanied by calcination was used for the synthesis of α-Fe2O3 nanoparticles. The as-synthesized nanoparticles showed ferromagnetic properties and quasi-spherical shapes, and exhibited efficient photocatalytic degradation of dyes under visible light irradiation.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
S. Shafique, U. Munir, M. M. Ahmed, Kh. S. Karimov
Summary: Flexible, low-cost, simple design, and stable functionality humidity sensors have been developed. Two types of sensors were fabricated, one with resistive design and the other with OFET design. The impedance of the sensors decreases with increasing humidity, and the OFET type sensors exhibit a higher impedance change compared to the resistive design. These sensors offer stable response in a temperature range of 22-75 degrees C and for a time interval of 240 h, making them suitable for various applications including environmental monitoring and biomedical applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Shinichi Hata, Yuki Sakai, Nanami Tani, Sho Kitano, Hiroki Habazaki, Akari Hirakawa, Hinako Tanaka, Yusuke Inomata, Toru Murayama, Masatake Haruta, Yukou Du, Yukihide Shiraishi, Naoki Toshima
Summary: The preparation of uniformly alloyed bimetallic particles in the Pd-Rh system is difficult. However, we propose a method to accumulate Pd-Rh alloy particles on the ZIF-67 surface under mild conditions, and demonstrate their application as a heterogeneous catalyst for dye degradation.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shih-Hao Wang, Rathinam Raja, Chuen-Yo Hsiow, Farheen Khurshid, Hau-Ren Yang, Po-Wen Chung, Yu-Ying Lai, Ru-Jong Jeng, Leeyih Wang
Summary: This work demonstrates the efficient catalytic conversion of CO2 to CO using a fullerene derivative, DTBT-C-60, as a photocatalyst, which exhibits excellent solar absorption and durable catalytic activity.
Article
Polymer Science
Anshika Anjali, Predhanekar Mohamed Imran, Nattamai S. P. Bhuvanesh, Samuthira Nagarajan
Summary: This study investigates the performance of quinoline-based organic field-effect transistors with different aryl and ethynyl linkers and various pi-end-groups. The results show that the variation in end-groups can affect the charge transport properties, with compounds possessing D-π-A-π-D architecture exhibiting higher p-channel transistor characteristics.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Pitchaipillai Sankar Ganesh, Krishnamurthy Veena, Renganathan Senthil, Koneti Iswamy, Esaki Muthu Ponmalar, Vanitha Mariappan, A. S. Smiline Girija, Jamuna Vadivelu, Samuthira Nagarajan, Dinakar Challabathula, Esaki Muthu Shankar
Summary: The antibiofilm activity of Illicium verum and its constituent compound 3-hydroxybenzoic acid against multi-drug-resistant Staphylococcus aureus was evaluated. The study found that the methanolic extract of Illicium verum and 3-hydroxybenzoic acid inhibited biofilm formation, hemolytic and proteolytic activities of Staphylococcus aureus without affecting bacterial growth.
Article
Chemistry, Physical
Balu Balambiga, Paneerselvam Devibala, Predhanekar Mohamed Imran, Nattamai S. P. Bhuvanesh, Samuthira Nagarajan
Summary: New arylacetylene end-capped alkoxyphenanthrenes were synthesized and shown to be the best active layer for solution-processable p-channel organic field-effect transistors. The compounds with embedded alkoxy chains exhibited enhanced solubility and non-covalent interactions, leading to effective molecular packing. The devices demonstrated high charge carrier mobility and on/off ratio, supported by strong pi-pi interactions and crystallinity.
Article
Nanoscience & Nanotechnology
Panneerselvam Devibala, Predhanekar Mohamed Imran, Nattamai S. P. Bhuvanesh, Samuthira Nagarajan
Summary: A series of new tetraphenylbenzene-based triarylamines were synthesized by the Diels-Alder cycloaddition reaction. These molecules have good solubility and thermal stability, and exhibit potential for use in organic field-effect transistors.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Komal Kurlekar, Anshika Anjali, Predhanekar Mohamed Imran, Samuthira Nagarajan
Summary: The charge transport properties of newly synthesized zinc porphyrins were modified by introducing various groups. The introduction of triarylamine as an electron donor enhanced the charge carrier mobility. Zinc porphyrins fabricated by solution-processable technique resulted in diversely self-assembled films. The compound with trifluoromethyl substitution showed higher charge carrier mobility due to better molecular packing.
Article
Chemistry, Organic
Panneerselvam Devibala, Balu Balambiga, Predhanekar Mohamed Imran, Nattamai S. P. Bhuvanesh, Samuthira Nagarajan
Summary: A series of new anthracene/pyrene functionalized triarylamine-based D-pi-D' semiconductors have been shown to exhibit high hole mobility and high-lying HOMO for use in p-channel OFET materials.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Deivendran Harshini, Panneerselvam Devibala, Varghese Maria Angela, Samuthira Nagarajan
Summary: Organic light-emitting diodes (OLEDs) have shown excellent performance in terms of portability and affordability, but there is still room for improvement in efficiency and color variability. Research on aggregation-induced emission (AIE) has discovered efficient blue light emitters. Triphenylethene (TriPE) and tetraphenylethene (TPE) molecules exhibit outstanding solid-state emission and increased device efficiency by suppressing pi-pi stacking interactions. The presence of TriPE and TPE in non-donor-acceptor (non-D-A) and donor-acceptor (D-A) architectures enhances chemical and thermal stability. Different device architectures and potential electron donating/accepting molecules demonstrate diverse light emissions and the substitution effect on TriPE and TPE donor units has significance in OLEDs.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Varghese Maria Angela, Deivendran Harshini, Predhanekar Mohamed Imran, Samuthira Nagarajan
Summary: A series of D-A-D architectured molecules with quinoline as the central core and triarylamines (TAAs) at both terminals were synthesized and studied for their memory performance. The different terminal groups in the D-A-D molecules tend to influence the performance of the memory devices and are explained through photophysical, electrochemical, morphological, and memory characterizations of the compounds. The electron-donating terminals gave the highest on/off ratio (10(4)) and lowest threshold voltage (-1.10 V) owing to the balance of charge transport within the D-A-D system. These D-A-D compounds with feasible synthetic routes and efficient memory performance are superior in the field of organic electronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Ramesh Gayathri, Varghese Maria Angela, Panneerselvam Devibala, Predhanekar Mohamed Imran, Samuthira Nagarajan
Summary: In order to comprehend the relationship between structure and property as well as the significance of the donor-acceptor system in resistive memory devices, a series of new organic small molecules were designed and synthesized. The devices with A-N-D-N-A structures exhibited write-once-read-many memory behavior, while those based on D-N-D-N-D molecules only showed conductor property. The presence of donor/acceptor substituents significantly influenced the memory-switching behavior, suggesting that a D-A architecture is ideal for resistance switching characteristics in memory devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Deivendran Harshini, Varghese Maria Angela, Predhanekar Mohamed Imran, Samuthira Nagarajan
Summary: Introducing a different acceptor with definite acceptor strength into the same molecular backbone is crucial for developing multilevel memory devices. By designing and synthesizing a series of Y-shaped compounds, the influence of various donor and acceptor end-cap units on the photophysical, electrochemical, and memory performance was evaluated. The study demonstrates that slight modification in the molecular structure can switch the memory behavior from binary to ternary, offering a new pathway for updating multilevel storage devices.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Balu Balambiga, Panneerselvam Devibala, Deivendran Harshini, Predhanekar Mohamed Imran, Samuthira Nagarajan
Summary: A new class of triarylamine substituted alkoxyphenanthrenes connected by acetylene bridges have been synthesized for the fabrication of high-performance p-channel organic field-effect transistors (OFETs). These semiconductors possess high-lying HOMO energy levels, enabling efficient hole-transport properties and reduced energy barriers for charge injection. The OFET devices, fabricated in a bottom-gated top-contact architecture using electron-rich substituents, exhibit significantly improved device performances, with a maximum charge carrier mobility of up to 3.5 cm(2) V-1 s(-1), a high ON/OFF current ratio of 10(8), and a low threshold voltage of -3 V. Modification of the donor arms in the phenanthrene-based compounds strongly influences the molecular packing, thin film morphology, and charge transport properties, resulting in enhanced OFET performance. This is supported by GIXRD and SEM analyses, which confirm the efficient π-π interactions and crystalline nature of the films.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Varghese Maria Angela, Deivendran Harshini, Predhanekar Mohamed Imran, Nattamai. S. P. Bhuvanesh, Samuthira Nagarajan
Summary: The design and synthesis of ferrocene-functionalized organic small molecules using quinoline cores have been achieved to develop a ternary write-once-read-many (WORM) memory device. Introducing an electron-withdrawing group into the ferrocene system alters the compounds' photophysical, electrochemical, and memory behavior. The compounds show promising characteristics for ternary WORM memory with efficient oxidation of the ferrocene units and charge transfer. The devices exhibit high on/off ratios and low threshold voltages, demonstrating stability and reliability.
Article
Engineering, Electrical & Electronic
Deivendran Harshini, Varghese Maria Angela, Paneerselvam Devibala, Predhanekar Mohamed Imran, Nattamai S. P. Bhuvanesh, Samuthira Nagarajan
Summary: A series of push-pull compounds, soluble in common organic solvents, were designed and synthesized for nonvolatile memory applications. One of the compounds exhibited low threshold voltage, high ON/OFF current ratio, and long retention time. The effect of differently functionalized amines on memory behavior was explored through optical, electrochemical, and computational studies.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Anshika Anjali, Sambit Kumar Lenka, Predhanekar Mohamed Imran, Nattamai S. P. Bhuvanesh, Samuthira Nagarajan
Summary: Functionalized quinolines with a D/A-A-D architecture were studied as active layers for organic field-effect transistors. The influence of various substituents on the transistor performance was investigated, and compounds with methoxyphenyl terminal functionalized with a D-A-D architecture exhibited the best p-channel transistor characteristics.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
