Category: Publications

Exploring Dielectric Properties in Atomistic Models of Amorphous Boron Nitride

In this research paper, ESR 6 reported in the theoretical study of dielectric properties of models of amorphous Boron Nitride. She focused on analyzing the dielectric functions of complex models generated by inter-atomic potentials containing varying concentrations of sp, sp2 and sp3 bonds between B and N atoms. The full paper can be found here.

Dendri-LEC Family: Establishing the Bright Future for Dendrimer Emitters in Traditional and Graphene-Based Light-Emitting Electrochemical Cells

In this research paper, STiBNite ESRs 9 and 13 present the implementation of dendrimers as emitters in light-emitting electrochemical cells (LECs), which offers low-cost synthesis, easy upscaling, and comparable stabilities to state-of-the-art emitters. The molecular design focuses on exchanging peripheral substituents to tune photophysical and electrochemical features, leading to enhanced stability and ion conductivity, and excellent compatibility with biogenic electrolytes, even with graphene-based devices. This work establishes a bright future for dendrimers as sustainable lighting sources. The full paper can be found here.

Dual-Phosphorescent Heteroleptic Silver(I) Complex in Long-Lasting Red Light-Emitting Electrochemical Cells

In this research paper, STiBNite ESR 9 contributes to a thoughtful ligand/complex design strategy towards the first red-emitting Ag(I) complex, [Ag(xantphos)(deebq)]PF6, featuring (i) outstanding stabilities upon reduction and (ii) thermally equilibrated dual-phosphorescence. This achievement resulted in red light-emitting electrochemical cells with superior stabilities and irradiances compared to the prior art. The full paper can be found here.

peri-Acenoacene Ribbons with Zigzag BN-Doped Peripheries

In this research paper, STiBNite ESRs Marco Franceschini and Martina Crosta (UNIVIE) present the synthesis and the properties of a series of BN-doped molecular ribbons. The BN-graphenoids in this study show systematic red-shift of their UV−vis absorption and emission spectra, as well as a decrease in their oxidation potential, upon elongation of the fused aromatic backbone. In addition, the ribbons’ emission shows a Thermally-Activated Delayed Fluorescence (TADF) component. All these properties are highly desirable features to engineer p-type organic semiconductors. The full paper can be found here.

Heat-based transdermal delivery of a ramipril loaded cream for treating hypertension

In this collaborative work, Anna Voronova (Univ. Lille) and STiBNite ESR Diego Jaramillo (device fabrication, UCLouvain) present the delivery of an angiotensin-converting enzyme (ACE) inhibitor, ramipril, using an electrothermal actuator based on a gold nanowire array to increase the transdermal ramipril flux. Using rats as in vivo model, systolic and diastolic blood pressure were monitored, while heat activation in the electrothermal actuator provided full drug delivery. The full paper can be found here.

First-principles study of the structural and electronic properties of BN-ring doped graphene

In this research paper, STiBNite ESR Laura Caputo, using first-principles (ab initio) techniques, investigates the periodic doping of graphene with borazine-like rings. The theoretical calculations show that the properties are sensitive to the doping pattern and doping concentration, and therefore these materials could be interesting candidates for optoelectronic applications. The full paper can be found here.

Spatial segregation of substitutional B atoms in graphene patterned by the moiré superlattice on Ir(111)

In this collaborative work where the STiBNite ESR Sena Tömekçe (TUM) is involved, Marc G. Cuxart presents the fabrication of B-doped graphene by chemical vapor deposition (CVD), using borane tetrahydrofuran on iridium substrate, which templates the segregation of boron substitutional atoms. The resulting material has been characterized by scanning tunneling microscopy/spectroscopy (STM/STS), x-ray photoelectron spectroscopy (XPS), angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations. The full paper can be found here.

Merging Biology and Photovoltaics: How Nature Helps Sun-Catching

In this review, STiBNite ESR Luca Cavinato (TUM) presents an extensive overview of emerging bio-derived materials suitable for organic solar cells, dye-sensitized solar cells and perovskite solar cells. Their production, handling, characterization, and implementation as bio-hybrid components, such as substrates, electrodes, photoactive layers, carrier transporters, light-trapping layers and sealant films, are critically discussed. The full paper can be found here.

Versatile Biogenic Electrolytes for Highly Performing and Self-stable Light-emitting Electrochemical Cells

In this research paper, STiBNite ESR Luca Cavinato (TUM) presents a new family of green electrolytes in light-emitting electrochemical cells (LECs). Self-stable and highly performing LECs are achieved by combining novel biogenic cellulose-based electrolytes and archetypical emitters (i.e., conjugated polymers (CPs) and ionic transition metal complexes). For the first time in the field, green electrolytes do not jeopardize device performance. The full paper can be found here.