1,721,158 research outputs found
Light on Molecular Devices
No full textAlberto Credi is a Professor of Chemistry at the Universit di Bologna (Italy) and an Associate Research Director at the Consiglio Nazionale delle Ricerche. He is a current member of the ChemPhotoChem Editorial Board
Molecular machines
No full textThe design and construction of machines and motors of molecular size is a stimulating scientific challenge and a primary objective of nanotechnology. During the past thirty years, chemists have taken up this challenge and learned how to make and operate simple nanoscale machines. Although these tiny devices are not yet part of our everyday life, we are approaching a new industrial revolution that opens up radically new perspectives for applications in catalysis, smart materials, robotics, information technology, and medical diagnostics and therapy
Chemistry meets light
No full textNelle mani dell’uomo l’interazione luce-materia è
diventata una scienza, la fotochimica, che ha importanti
applicazioni in svariati settori, molti dei quali
sono stati affrontati nel WS4 del convegno CIS 2019 che ha visto la costante
presenza di una cinquantina di partecipanti
Chemistry meets light
No full textNelle mani dell’uomo l’interazione luce-materia è
diventata una scienza, la fotochimica, che ha importanti
applicazioni in svariati settori, molti dei quali
sono stati affrontati nel WS4 all'interno del Convegno CIS 2019 che ha visto la costante presenza di una cinquantina di partecipanti
Dethreading Processes of Rotaxanes -Supporting Information (article DOI: 10.1002/cphc.201501160)
No full textSupporting information for the article Dethreading of a photoactive azobenzene-containing molecular axle from a crown ether ring: a computational investigationby Gloria Tabacchi · Serena Silvi · Margherita Venturi · Alberto Credi ·Ettore FoisDOI: 10.1002/cphc.201501160</div
Macchine molecolari
Full text linkLa costruzione di macchine di dimensioni molecolari è uno straordinario risultato scientifico e un obiettivo primario della nanotecnologia. Nel corso degli ultimi trent’anni, i chimici in varie parti del mondo hanno imparato a realizzare delle semplici macchine nanometriche. Anche se questi minuscoli dispositivi non sono ancora divenuti parte integrante della nostra vita quotidiana, siamo ormai alle soglie di una nuova rivoluzione industriale, capace di cambiare il nostro futuro con applicazioni innovative nella tecnologia dei materiali, nell’informatica, nella robotica e nella medicina
Light-operated machines based on threaded molecular structures
No full textRotaxanes and related species represent the most common implementation
of the concept of artificial molecular machines, because the supramolecular nature of
the interactions between the components and their interlocked architecture allow a
precise control on the position and movement of the molecular units. The use of light
to power artificial molecular machines is particularly valuable because it can play the
dual role of “writing” and “reading” the system.Moreover, light-driven machines can
operate without accumulation of waste products, and photons are the ideal inputs to
enable autonomous operation mechanisms. In appropriately designed molecular
machines, light can be used to control not only the stability of the system, which
affects the relative position of the molecular components but also the kinetics of the
mechanical processes, thereby enabling control on the direction of the movements.
This step forward is necessary in order to make a leap from molecular machines to
molecular motors
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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