Ultrasound Stimulated Nucleation and Growth of a Dye Assembly into Extended Gel Nanostructures (Abstract/Poster in atti di convegno)

Type
Label
  • Ultrasound Stimulated Nucleation and Growth of a Dye Assembly into Extended Gel Nanostructures (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • Vakayil K. Praveen,a Joanna M. Malicka,a Anjamkudy Sandeep,b Filippo Monti,a Elisa Bandini, a Massimo Gazzano,a Choorikkat Ranjith,c Ayyappanpillai Ajayaghosh,b Nicola Armaroli,a (2013)
    Ultrasound Stimulated Nucleation and Growth of a Dye Assembly into Extended Gel Nanostructures
    in Suprachem 2013 - XI Congresso Nazionale Di Chimica Supramolecolare, Padova (Italy), September 24-27, 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Vakayil K. Praveen,a Joanna M. Malicka,a Anjamkudy Sandeep,b Filippo Monti,a Elisa Bandini, a Massimo Gazzano,a Choorikkat Ranjith,c Ayyappanpillai Ajayaghosh,b Nicola Armaroli,a (literal)
Pagina inizio
  • OC24 (literal)
Pagina fine
  • OC24 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Suprachem 2013 - PROCEEDINGS (literal)
Note
  • Abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via Gobetti 101, 40129 Bologna (Italy) b Photosciences and Photonics Group, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, 695019 Trivandrum (India) c Dipartimento di Chimica Organica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano (Italy) (literal)
Titolo
  • Ultrasound Stimulated Nucleation and Growth of a Dye Assembly into Extended Gel Nanostructures (literal)
Abstract
  • Self-assembly of functional organic dyes to form extended nanostructures is a topic of current interest due to possible applications in electronic and optoelectronic devices. Continuous research in this field has developed a number of methods to construct nanostructures with desired shape, function and uses.2 We present the unique behavior of a squaraine derivative GA-SQ, which forms a ill-defined assembly under normal conditions, whereas it generates extended nanostructures and gels upon application of ultrasound .3 With the help of spectroscopic (absorption, emission, FT-IR, XRD) and microscopic (SEM, AFM, TEM) techniques, we demonstrate a nucleation and growth mechanism for the observed self-assembly. Furthermore, the addition of a minuscule amount of single wall carbon nanotubes (SWCNTs) as a nanoscale substrate is found to considerably influence the morphological properties of the GA-SQ sonogel by promoting a heterogeneous nucleation process. This study demonstrates that self-assembly of functional dyes can be manipulated by an external stimulus and can be further controlled by the addition of carbon nanostructures as dopants. 1 A. Ajayaghosh, V. K. Praveen, C. Vijayakumar, Chem. Soc. Rev. 2008, 37, 109. 2 K. Yoosaf, A. Llanes-Pallas, T. Marangoni, A. Belbakra, R. Marega, E. Botek, B. Champagne, D. Bonifazi, N. Armaroli, Chem. -Eur. J. 2011, 17, 3262. 3 J. M. Malicka, A. Sandeep, F. Monti, E. Bandini, M. Gazzano, C. Ranjith, V. K. Praveen, A. Ajayaghosh, N. Armaroli, Chem. -Eur. J. 2013, DOI: 10.1002/chem.201301539. (literal)
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