Article
Chemistry, Multidisciplinary
Nini Xin, Dong Gao, Borui Su, Ting Zhou, Yuda Zhu, Chengheng Wu, Dan Wei, Jing Sun, Hongsong Fan
Summary: Mitochondria play significant roles in maintaining a stable internal environment for cell metabolism. Fluorescent probes provide powerful tools for visualizing dynamic processes. However, most mitochondria-targeted probes have poor photostability, making long-term monitoring challenging. In this study, a novel mitochondria targeted probe based on carbon dots with high performance for long-term tracking was designed.
Article
Computer Science, Artificial Intelligence
Agus Pratondo, Elfahmi Elfahmi, Astri Novianty
Summary: The study aims to build a model that can distinguish between turmeric and temulawak based on images captured from a mobile phone camera. By using transfer learning, the models achieved high accuracy rates.
PEERJ COMPUTER SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Junfang Zhang, Yuxin Liu, Christian Njel, Sebastian Ronneberger, Nadezda V. V. Tarakina, Felix F. F. Loeffler
Summary: Counterfeiting not only causes trillion-dollar economic losses annually, but also threatens human health, social equity, and national security. Researchers have developed a nanoprinting-assisted flash synthesis approach to create fluorescent nanofilms with physical unclonable function micropatterns in milliseconds. These unclonable patterns can be quickly and independently read out by fluorescence and topography scanning, greatly enhancing their security.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
M. Sumi, N. T. Nevaditha, B. Sindhu Kumari
Summary: Curcumin and isatin derivatives are synthesized to form potentially tridentate ligand, and its complexes with bivalent manganese, cobalt, nickel, copper and zinc are investigated. These complexes show significant biological activities, including antifungal, antibacterial, antioxidant and anticancer properties.
INORGANICA CHIMICA ACTA
(2023)
Article
Pharmacology & Pharmacy
Ann-Kathrin Widmann, Martin A. Wahl, Dietmar R. Kammerer, Rolf Daniels
Summary: The study investigated the extraction of Curcuma longa rhizomes using supercritical carbon dioxide at different pressure and temperature conditions, with the optimum yield achieved at 425 bar and 75 degrees C. A comparison was made between supercritical carbon dioxide extraction and solvent extraction using methanol and n-hexane, and the stability of the extracts under different storage conditions was monitored.
Article
Chemistry, Multidisciplinary
Ayse Tugca Yesilyurt, Xiaofei Wu, Kosti Tapio, Ilko Bald, Jer-Shing Huang
Summary: We observed hotspot-induced emitters and significant enhancement of photoluminescence in plasmonic dimer nanoantennas with the assistance of DNA origami upon excess polarized laser illumination. The alignment of DNA and laser polarization along the dimer axis is crucial for the generation of bright emitters and the observed increase in photoluminescence. The emission spectrum indicates the formation of carbon-based emitters due to plasmonic hotspots at the longitudinal antenna resonance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Anabela S. Lorenzetti, Ezequiel Vidal, Maria F. Silva, Claudia Domini, Federico J. Gomez
Summary: A new family of fluorescent eutectic systems was successfully prepared using a novel method, and the extraction and determination of curcuminoids were achieved with high efficiency. The methodology proved to be more environmentally friendly than previous studies, showing great potential for Green Analytical Chemistry.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Infectious Diseases
Jawaher J. Albaqami, Hamida Hamdi, Arunaksharan Narayanankutty, Naduvilthara U. Visakh, Anju Sasidharan, Aswathi Moothakoottil Kuttithodi, Ademola C. Famurewa, Berin Pathrose
Summary: This study extracted essential oils from the leaves of Curcuma species and evaluated their chemical composition, antioxidant properties, and antibacterial activity. The results showed that the essential oils from Curcuma exhibited high antioxidant and antibacterial activities, and demonstrated cytotoxicity against breast cancer cell lines.
Article
Chemistry, Multidisciplinary
Bohan Zhang, Bingzhe Wang, Elena Ushakova, Bingchen He, Guichuan Xing, Zikang Tang, Andrey L. Rogach, Songnan Qu
Summary: The luminescence mechanisms of carbon dots were investigated, revealing different emissions from different optical centers. The broad red emission was found to be sensitive to solvents, temperature, and UV-IR.
Article
Chemistry, Inorganic & Nuclear
Ai-Yun Ni, He Zhao, Pei-Pei Zhang, Bo-Lun Zhang, Jian-Jun Zhang, Shuqin Liu, Jun Chen, Chunying Duan
Summary: This study reports a one-dimensional coordination polymer (1) that acts as a switch compound with reversible conversion between room temperature phosphorescence (RTP) and delayed fluorescence (DF) triggered by solvent exchange. The DF emission (463 nm) of 1 can be converted to RTP emission (503 nm) via water vapor fumigation or exposure to wet air. The conversion is achieved by exchanging DMSO molecules with H2O molecules, thereby changing the singlet-triplet energy difference (ΔE-st). The reversible switch property of this compound can be used for advanced data encryption and decryption.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Physical
Kumar Sagar Jaiswal, Nila Nandha Kadamannil, Raz Jelinek
Summary: The spread of antimicrobial resistance and lesser development of new antibiotics have led to the search for new antimicrobial and diagnostic vehicles. Carbon nanomaterials (CNMs) have emerged as promising theranostic materials with potent antibacterial activities and diagnostic capabilities. This review discusses recent studies on innovative CNMs and their applications in bacterial theranostics, emphasizing the relationship between their structural parameters, chemical properties, and biological impact.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zhihong Wei, Boyang Wang, Mingcai Xie, Daocheng Hong, Xin Yang, Sushu Wan, Weiqing Yang, Siyu Lu, Yuxi Tian
Summary: This study investigates the luminescence properties and photostability of carbon dots (CDs) in different matrix environments and finds that these properties are highly sensitive to the local chemical environment. A better understanding of the dependence of CDs' spectroscopic properties on the complex chemical environment is crucial for controlling their optical properties and optimizing their applications.
CHINESE CHEMICAL LETTERS
(2022)
Article
Biochemistry & Molecular Biology
Yiping Lu, Wei Song, Zhiquan Tang, Wenru Shi, Shumei Gao, Jun Wu, Yuan Wang, Hu Pan, Yangang Wang, Hong Huang
Summary: In this study, the researchers developed a Golgi apparatus-targeted near-infrared fluorescent nanoprobe, Golgi-Pdots, for precise monitoring of the Golgi apparatus. They prepared hydrophobic carbon nanodots with bright NIR fluorescence and incorporated them into a polymer matrix modified with Golgi-targeting molecules to create water-soluble Golgi-Pdots. The Golgi-Pdots showed good biocompatibility and targeted the Golgi apparatus effectively. The researchers successfully used Golgi-Pdots for long-term tracking of the Golgi apparatus in live cells.
Article
Food Science & Technology
Justyna Zagorska, Wirginia Kukula-Koch, Marcin Czop, Katarzyna Ilowiecka, Wojciech Koch
Summary: The aim of this study was to compare how different types of thermal treatment affect the content of curcuminoids and the antioxidant properties of turmeric. The results revealed that traditional boiling process was the most beneficial in terms of curcuminoid content (204 mg/g of curcumin) and antioxidant activity of the samples.
Article
Chemistry, Multidisciplinary
Niall M. C. Mulkerns, William H. Hoffmann, Javier Ramos-Soriano, Noelia de la Cruz, Teodoro Garcia-Millan, Robert L. Harniman, Ian D. Lindsay, Annela M. Seddon, M. Carmen Galan, Henkjan Gersen
Summary: A practical method based on measuring the refractive index of nanoparticles in suspension is proposed for determining the ratio of functionalisation layer volume to particle volume. The method is successfully applied to different nanoparticles and shows the ability to detect differences in surface functionalisation or composition of nanosized particles. This non-destructive and rapid method is well-suited for industrial particle characterisation and biological applications.
Article
Nanoscience & Nanotechnology
Poushali Das, Sayan Ganguly, Ilana Perelshtein, Shlomo Margel, Aharon Gedanken
Summary: This study reports a simple and environmentally friendly method to synthesize gallium nanoparticles embedded in reduced graphene oxide under ambient conditions. The resulting material can be used to develop smart electronic textiles for electromagnetic radiation shielding and exhibits high thermal conductivity.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sayan Ganguly, Poushali Das, Arka Saha, Malachi Noked, Aharon Gedanken, Shlomo Margel
Summary: This study reports a preparation method of MXene-based magnetic nanohybrid coating for flexible electronic applications. The MXene and iron oxide hybrid coated with carbon dot-triggered photopolymerized polynorepinepherene (PNE) was deposited on cellulose microporous membrane using a vacuum-assisted filtration strategy. The coated membranes showed good flexibility and mechanical strength in tensile testing, along with excellent electrical conductivity and EMI shielding performance.
Review
Chemistry, Multidisciplinary
Trisita Ghosh, Tushar Kanti Das, Poushali Das, Pallab Banerji, Narayan Ch. Das
Summary: The serendipitous discovery of carbon dots (CQDs) as a potential carbonaceous nanomaterial has become a hot topic in material science and technology research. This review focuses on doped CQDs (D-CQDs), discussing their characteristic features, synthesis strategies, applications, and qualitative comparison with other methods. The review also briefly describes the recently developed understanding of the structure and optical properties of D-CQDs, as well as their use in bio-imaging and sensing applications, and speculates on their potential in various fields.
Article
Acoustics
Moorthy Maruthapandi, Akanksha Gupta, Arumugam Saravanan, Gila Jacobi, Ehud Banin, John H. T. Luong, Aharon Gedanken
Summary: Under ultrasonication, Cu2O microparticles are fragmented into NPs and strongly interact with alkali lignin to form a nanocomposite. The L-Cu nanocomposite exhibits enhanced antibiofilm activities against various pathogens. Experimental evidence reveals the destruction of bacterial cell walls by L-Cu, leading to the loss of structural morphology. The MICs for biofilm inhibition and bacterial eradication vary for different pathogens, highlighting the potential of L-Cu as an alternative to neutralize MDR pathogens.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Chemistry, Physical
Sengodan Prabhu, Moorthy Maruthapandi, Arulappan Durairaj, Srinivasan Arun Kumar, John H. T. Luong, Rajendran Ramesh, Aharon Gedanken
Summary: Ni(1-alpha)Co(alpha)MoO4 (alpha = 0, 0.1, 0.3, and 0.5 M) nanorods were successfully synthesized via a hydrothermal method and proved to be excellent electrode materials for a hybrid supercapacitor. The electrochemical properties of the nanorods were found to be dependent on the Ni/Co ratio, as shown by various electrochemical techniques. Ni0.5Co0.5MoO4 (alpha = 0.5 M) exhibited a specific capacity (Qg) of 354 Cg-1@1 Ag-1 with a notable retention capacity of 92% after 8000 repeated cycles at 10 Ag-1. Ni0.5Co0.5MoO4 with a high surface area outperformed mono-metallic (NiMoO4) and bimetallic (Ni0.9Co0.1MoO4 and Ni0.7Co0.3MoO4) nanostructures. The hybrid supercapacitor (Ni0.5Co0.5MoO4//activated carbon) delivered a maximum Qcell of 53 Cg-1 at 1 Ag-1 with an energy density of 16.2 Wh kg-1 and a power density of 725 W kg-1.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Poushali Das, Sayan Ganguly, Syed Rahin Ahmed, Masoomeh Sherazee, Shlomo Margel, Aharon Gedanken, Seshasai Srinivasan, Amin Reza Rajabzadeh
Summary: Flexible polymeric thin films, reinforced with heteroatom-doped carbon dots (CDs), have been fabricated with antioxidant and UV-resistant properties. The CDs showed stability in aqueous media and exhibited sustained release behavior in different food simulants. The films also demonstrated excellent water vapor impermeability and toughness.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Poushali Das, Sayan Ganguly, Arumugam Saravanan, Shlomo Margel, Aharon Gedanken, Seshasai Srinivasan, Amin Reza Rajabzadeh
Summary: Apium graveolens-derived carbon dots (ACDs) were synthesized via a one-step hydrothermal process and used to reinforce a polymer hydrogel. The resulting hydrogel exhibited mechanical robustness, fluorescent behavior, natural adhesivity, as well as self-healing, controlled release, and antibacterial properties. This material holds great potential as an alternative to soft biomaterials and soft robotics.
ACS APPLIED BIO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Poushali Das, Masoomeh Sherazee, Parham Khoshbakht Marvi, Syed Rahin Ahmed, Aharon Gedanken, Seshasai Srinivasan, Amin Reza Rajabzadeh
Summary: In this study, a pollution-free technique was developed to fabricate a heteroatom-doped carbon dot immobilized fluorescent biopolymer composite for functional textiles. The composite exhibited excellent antioxidant and antimicrobial properties, making it suitable for medical and healthcare applications. Hospital-acquired infections pose a significant financial burden on healthcare systems worldwide.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Sengodan Prabhu, Moorthy Maruthapandi, Arulappan Durairaj, John H. T. Luong, Aharon Gedanken
Summary: Capsule-like CuO/CDs (CuO@CDs) with a surface area of 33.12 m2 g-1 were synthesized through hydrothermal treatment, compared to 19.02 m2 g-1 for pristine CuO. A hybrid solid-state supercapacitor (HSSC) was fabricated using capsule-like CuO@CDs as the anode, activated carbon (AC) as the cathode, and PVA/1M KOH as the electrolyte. The three-electrode system exhibited a specific capacitance of 1208.88 F/g (at 2 A/g current density) and maintained a remarkable life cycle (retention) of 93% and Coulombic efficiency (CF) of 98% after 5000 charge-discharge cycles at 10 A/g. In terms of performance, the HSSC delivered 1.5 V and 102.60 F/g (50.74 C/g) at 2 A/g, with a power density of 8437.50 W/kg and an energy density of 36.90 Wh/kg. The HSSC retained 92% of cyclic stability and 83% of CF after 10,000 cycles.
Article
Nanoscience & Nanotechnology
Syed Rahin Ahmed, Ana Gomez Cardoso, Herlys Viltres Cobas, Poushali Das, Aicheng Chen, Seshasai Srinivasan, Amin Reza Rajabzadeh
Summary: This study presents a hydrothermal synthesis method for fluorescent graphdiyne quantum dots (GDY QDs) from graphdiyne sheets and reports, for the first time, the nanozymatic activity of GDY QDs. The GDY QDs catalyze the oxidation of H2O2 through peroxidase biomimetic nature and enable detection of H2O2 and dopamine. The findings of this study have important implications for the development of carbon-based nanocrystals with enzyme-mimicking nature for analytical approaches, particularly colorimetric nanobiosensors.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Environmental
Belal Abu Salha, Arumugam Saravanan, Moorthy Maruthapandi, Ilana Perelshtein, Aharon Gedanken
Summary: In this study, nitrogen-doped carbon dots (N-CDs) were prepared from Piper betle leaves using a simple hydrothermal method. The synthesized N-CDs were characterized and it was found that treating strawberry plants with N-CDs resulted in increased chlorophyll and carbohydrate content, as well as increased production of secondary metabolites. These findings suggest that biomass-based, betel leaf-derived N-CDs can be used as an effective fertilizer for global agricultural production.
ACS ES&T ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Syed Rahin Ahmed, Masoomeh Sherazee, Poushali Das, Jesse Dondapati, Seshasai Srinivasan, Amin Reza Rajabzadeh
Summary: Quantum dots with unconventional properties, such as borophene quantum dots (BQDs), have been synthesized and found to exhibit nanozymatic activity and antibacterial activity, in addition to their conventional fluorescence emission nature. Through an electrochemical process, the nanozymatic activity of BQDs was significantly enhanced, enabling the detection of H2O2 with exceptional sensitivity. The remarkable findings of this study have the potential to open a pathway for the future development of electroassisted nanozymatic detection methods.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Poushali Das, Sayan Ganguly, Andreas Rosenkranz, Bo Wang, Jinhong Yu, Seshasai Srinivasan, Amin Reza Rajabzadeh
Summary: MXenes are highly versatile materials that can compete with and outperform graphene in certain applications. The self-restacking issue can be addressed by hybridizing with low-dimensional nanostructures. This review highlights recent advancements and emerging applications in this field, as well as the challenges that need to be overcome.
MATERIALS TODAY NANO
(2023)
Article
Chemistry, Physical
Masoomeh Sherazee, Syed Rahin Ahmed, Poushali Das, Seshasai Srinivasan, Amin Reza Rajabzadeh
Summary: This paper reports a novel approach for the synthesis of carbon quantum dot-gold nanoparticles and demonstrates the enhancement of their catalytic activity through electrochemical means. The method enables rapid and sensitive detection in field applications and can be utilized to improve and exploit enzymatically dependent reactions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Nanoscience & Nanotechnology
Akanksha Gupta, Moorthy Maruthapandi, Poushali Das, Arumugam Saravanan, Gila Jacobi, Michal Natan, Ehud Banin, John H. T. Luong, Aharon Gedanken
Summary: This study developed a simple sonochemical method to coat Cu2O nanoparticles on flexible substrates, which can effectively inhibit the growth of planktonic and biofilm bacteria and prevent microbial contamination in hospitals and industrial environments.
ACS APPLIED BIO MATERIALS
(2022)