Publications by authors named "G Pavan"
Cycloparaphenylenes (CPPs) represent a significant challenge for the synthesis of mechanically interlocked architectures, because they lack heteroatoms, which precludes traditional active and passive template methods. To circumvent this problem and explore the fundamental and functional properties of CPP rotaxanes and catenanes, researches have resorted to unusual non-covalent and even to labor-intensive covalent template approaches. Herein, we report a ring-in-ring non-covalent template strategy that makes use of the surprisingly strong non-covalent inclusion of crown ethers into suitably sized CPPs.
View Article and Find Full Text PDFArticle Synopsis
- The study investigated the sound patterns of a newly examined dolphin population in the Mediterranean, focusing on how environmental and social factors influence their vocalizations.
- Findings showed that dolphins emitted more whistles and clicks when in larger groups or with calves present, with specific acoustic features changing based on behavior and environmental conditions.
- The research revealed that dolphins have a flexible acoustic communication system, affected by social interactions and habitat conditions, highlighting the need for more localized studies on their communication.
Article Synopsis
- Multilayer vesicles, or nano onions, can be formed through the self-assembly of amphiphilic gold(pyrazolate) complexes in water, showcasing a new approach distinct from typical organic amphiphiles.
- Characterization techniques like electron microscopy and dynamic light scattering confirmed the unique structures, highlighting that the presence of Au(I) is crucial compared to similar silver and copper complexes.
- Molecular dynamics simulations helped explain how these nano onions form through interactions between stacked complexes, providing a deeper understanding of their assembly in solution.
The acoustic repertoires of long-finned pilot whales () in the Mediterranean Sea are poorly understood. This study aims to create a catalogue of calls, analyse acoustic parameters, and propose a classification tree for future research. An acoustic database was compiled using recordings from the Alboran Sea, Gulf of Lion and Ligurian Sea (Western Mediterranean Basin) between 2008 and 2022, totalling 640 calls.
View Article and Find Full Text PDFAn acoustic metamaterial (AMM) consisting of a porous material (melamine foam) layer above a symmetrical labyrinthine metamaterial, incorporating a micro-hole and micro-slit cover plate, is proposed to simultaneously mitigate low and high frequency noise from industrial machineries. Theoretical model of sound absorption by this AMM is developed and validated numerically and experimentally. Sensitivity analysis indicates that increasing the length of the labyrinthine pathway and cover plate thickness and decreasing the slit width, slit length, and hole diameter shifts the peak sound absorption to lower frequencies.
View Article and Find Full Text PDF