Interfacing transition metal dichalcogenides with carbon dots for managing photoinduced energy and charge-transfer processes

Exfoliated semiconducting MoS2 and WS2 were covalently functionalized with 1,2-dithiolane-modified carbon nanodots (CNDs). Based on electronic absorption and fluorescence emission spectroscopy, modulation of the optoelectronic properties of transition metal dichalcogenides (TMDs) by interfacing with CNDs was accomplished. Advertisements

Electrostatic Association of Ammonium-Functionalized Layered-Transition-Metal Dichalcogenides with an Anionic Porphyrin

Ammonium modified MoS2 and WS2 were prepared and characterized by complementary spectroscopic, thermal and microscopic means. The positive charges on functionalized MoS2 and WS2, owed to the presence of ammonium units, were exploited to electrostatically bring in contact an anionic porphyrin bearing a carboxylate moiety, yielding porphyrin/MoS2 and porphyrin/WS2 nanoensembles, respectively.

Aqueous batteries

Aqueous batteries are an emerging candidate for low‐cost and environmentally friendly grid storage systems. Designing such batteries from inexpensive, abundant, recyclable, and nontoxic organic active materials provides a logical step toward improving both the environmental and economic impact of these systems.

Chemical tuning MoS2 for energy applications: living on the edge

A new interdisciplinary study from groups at NHRF, IMN, INA, and Chimie des Interactions Plasma-Surface, University of Mons, Belgium, proves that 1,2-dithiolane derivatives can covalently anchored preferentially at the MoS2 sheet edges. This key result presents an important piece to the puzzle of 2D materials’ chemistry.

Gap and Van Hove measurements

Using low-loss electron energy loss spectroscopy (EELS), in a scanning transmission electron microscope (STEM), it has been confirmed, following previous experimental (photoluminescence) and theoretical (DFT) studies, that the band gap of atomically thin nanoflakes of MoxW(1-x)S2 does shift with the alloying degree of the sample.

Ice-covered C60 crystals, an interstellar birthplace for early life?

C60, the football shaped molecule whose discovery led to the Nobel Prize in 1996, has recently been proven to exist in space. A new study from EnEx groups at the IMN, NHRF and colleagues in seven other laboratories across Europe, Turkey and Canada suggests that ice layers can form spontaneously on the surface of crystals of C60 molecules, and that these water layers should be stable even under the extreme conditions of interstellar space.