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Graphene quantum dot (GQD) is one of the youngest superstars of the carbon family. Since its emergence in 2008, GQD has attracted a great deal of attention due to its unique optoelectrical properties. Non‐zero bandgap, the ability to accommodate functional groups and dopants, excellent dispersibility, highly tunable properties, and biocompatibility are among the most important characteristics of GQDs...
Nitrogen oxide (NOx) is a family of poisonous and highly reactive gases formed when fuel is burned at high temperatures during anthropogenic behavior. It is a strong oxidizing agent that significantly contributes to the ozone and smog in the atmosphere. Thus, NOx removal is important for the ecological environment upon which the civilization depends. In recent decades, metal–organic frameworks (MOFs)...
Multi‐emission materials have come to prominent attention ascribed to their extended applications other than single‐emission ones. General and robust design strategies of a single matrix with multi‐emission under single excitation are urgently required. Metal–organic frameworks (MOFs) are porous materials prepared with organic ligands and metal nodes. The variety of metal nodes and ligands makes MOFs...
Pollution‐induced degradation of the environment is a serious problem for both developing and developed countries. Existing remediation methods are restricted, necessitating the development of novel remediation technologies. Nanomaterials with unique characteristics have recently been developed for remediation. Quantum dots (QDs) are semiconductor nanoparticles (1–10 nm) with optical and electrical...
Plasmonics
In article number 2200975, Liam Collard, Massimo De Vittorio, Ferruccio Pisanello, and co‐workers use wavefront engineering to harness the resonant properties of plasmonic nanostructures on the tip of a multimode fiber and spotlight specific resonances across the dispersion diagram to enable spatially‐resolved surface enhanced Raman spectroscopy and reconfigurable beam steering. [Cover...
Integration of plasmonic structures on step‐index optical fibers is attracting interest for both applications and fundamental studies. However, the possibility to dynamically control the coupling between the guided light fields and the plasmonic resonances is hindered by the turbidity of light propagation in multimode fibers (MMFs). This pivotal point strongly limits the range of studies that can...
Heavy Metal Detection
In article number 2201003 by Aristides Bakandritsos, Michal Otyepka, and co‐workers, recyclable fluorescent nanographenes with high‐affinity pockets for toxic metals enable selective and highly effective decontamination of natural water and quality monitoring with sub‐nanomolar sensitivity for lead and cadmium via photoluminescence quenching or optical lateral‐flow sensors.
Access to clean water for drinking, sanitation, and irrigation is a major sustainable development goal of the United Nations. Thus, technologies for cleaning water and quality‐monitoring must become widely accessible and of low‐cost, while being effective, selective, sustainable, and eco‐friendly. To meet this challenge, hetero‐bifunctional nanographene fluorescent beacons with high‐affinity pockets...
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