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Hybridized electronic states between CdSe nanoparticles and conjugated organic ligands： A theoretical and ultrafast photo-excited carrier dynamics study

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Nano Research 2018年第1期11卷 142-150页

作者： Tersilla Virgili Arrigo Calzolarit Inma Suarez Lopez Alice Ruini Alessandra Catellani1 Barbara Vercelli francesco tassone IFN -CNR c o Dipartimento di Fisica Politecnico di Milano 20132 Milano Italy Istituto Nanoscienze CNR-NANO-S3 Via Campi 213/A I-41125 Modena Italy Dipartimento di Scienze Fisiche Informatiche e Matematiche Universit# di Modena e Reggio Emilia Via Campi 213/a I-41125 Modena Italy Istituto di Chimica della Materia Condensata e di Tecnologie per I'Energia ICMATE-CNR SS di Milano Via Cozzi 53 20125 Milano Italy Center for Nano Science and Technology @Polimi Istituto Italiano di Tecnologia Via Pascoli 70/3 20133 Milano Italy

Formation of densely packed thin films of semiconductor nanocrystals is advantageous for the exploitation of their unique optoelectronic properties for real-world applications. Here we investigate the fundamental role of the structure of the bridging ligand on the optoelectronic properties of the resulting hybrid film. In particular, we considered hybrid films formed using the same CdSe nanocrystals and two organic ligands that have the same bidentate dithiocarbamate bInding moiety, but differ in their bridging structures, one bridged by ethylene, the other by phenylene that exhibits conjugation. Based on the results of photo- excited carrier dynamics experiments combined with theoretical calculations on the electronic states of bridged CdSe layers, we show that only the phenylene- based ligand presents a strong hybridization of the molecular HOMO state with CdSe layers, that is a marker of formation of an effective bridge. We argue that this hybridization spread favors the hopping of photo-excited carriers between nanocrystals, which may explain the reported larger photo-currents in phenylene-based hybrid films than those observed in ethylene-based ones.

关键词： hybrid layer-by-layer film ultrafast spectroscopy CdSe nanoparticles molecular orbitals density functional theory

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Effects of a short-term alirocumab administration on the aortic stiffness: preliminary results

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Journal of Geriatric Cardiology 2019年第10期16卷 782-784页

作者： Feola Mauro Ferreri Cinzia Rossi Arianna Testa Marzia Ruocco Gaetano francesco tassone Cardiology Division Ospedale Regina Montis Regalis Mondovi' Italy School of Geriatry Università degli Studi di Torino TorinoItaly Division of Endocrinology Ospedale S. Croce-carleCuneoItaly

Arterial stiffness and wave reflections are widely used in observational studies to analyse the determinants of haemodynamic changes observed in various clinical conditions and to understand the pathogenesis of their cardiovascular complications. A large number of publications and several reviews documented the changes in arterial stiffness and wave reflections after various interventions, either non-pharmacological or pharmacological.

关键词： Alirocumab Aortic stiffness Pulse wave velocity

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