Results 31 to 40 of about 32,903 (264)

Synthesis and physicochemical characterization of carbon quantum dots produced from folic acid

Scientific Reports, 2023
The rising interest in carbon dots (c-dots) is driven by their remarkable potential in the field of biomedical applications. This is due to their distinctive and adjustable photoluminescence characteristics, outstanding physicochemical properties ...
Walaa Fawaz, Jameela Hasian, Ibrahim Alghoraibi   +2 more
doaj   +1 more source

Fluorescent carbon quantum dots for effective tumor diagnosis: A comprehensive review

Biomedical Engineering Advances, 2023
The Fluorescent Carbon Quantum Dots (FCQDs) have been extensively explored for medical applications. Primarily, the research concentrated on diagnosis, imaging, and alternative therapeutics for various diseases.
B. Divya Latha, Kondi Soumya, Namdev More, Choppadandi Mounika, Aditya Teja Guduru, Gajendar Singh, Govinda Kapusetti   +6 more
doaj   +1 more source

Full-color fluorescent carbon quantum dots [PDF]

Science Advances, 2020
Efficient full-color fluorescent carbon quantum dots are synthesized by acid reagent engineering for white light–emitting devices.
Liang Wang, Weitao Li, Luqiao Yin, Yijian Liu, Huazhang Guo, Jiawei Lai, Yu Han, Gao Li, Ming Li, Jianhua Zhang, Robert Vajtai, Pulickel M. Ajayan, Minghong Wu   +12 more
openaire   +3 more sources

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Nanocomposites of Carbon Quantum Dots and Graphene Quantum Dots: Environmental Applications as Sensors

Chemosensors, 2022
Carbon-based quantum dots and their nanocomposites have sparked immense interest for researchers as sensors due to their attractive physico-chemical properties caused by edge effects and quantum confinement.
Ajaypal Kaur, Komal Pandey, Ramandeep Kaur, Nisha Vashishat, Manpreet Kaur   +4 more
doaj   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Quantum Dot Modified Multiwall Carbon Nanotubes [PDF]

The Journal of Physical Chemistry B, 2006
A novel strategy for the fabrication of multiwall carbon nanotube-nanocrystal heterostructures is shown. Different quantum dots (QDs) with narrow size distributions were covalently coupled to carbon nanotubes (CNTs) and silica-coated CNTs in a simple, uniform, and controllable manner. The structural and optical properties of CNT/QD heterostructures are
Maciej, Olek, Thomas, Büsgen, Michael, Hilgendorff, Michael, Giersig   +3 more
openaire   +2 more sources

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Clustering of carbon quantum dots from polysaccharides (Cellulose, Alginate, Chitosan) versus heterocyclic compounds: Synthesis, characterization and medical applications

Carbohydrate Polymer Technologies and Applications
Carbon quantum dots are special class of carbon nanostructures with spherical size of one to ten nanometers. Synthesis techniques of carbon quantum dots are diverse from top-down to bottom-up techniques but most of them are complicated, energy consuming,
Hanan B. Ahmed, Mary M. Mikhail, Mahmoud El-Shahat, Hossam E. Emam   +3 more
doaj   +1 more source