Articolo in rivista, 2016, ENG, 10.1002/sia.5979

Surface immobilization of functional molecules by reactive self-assembling

Mezzi A.; Kaciulis S.; Brucale M.; Gentili D.; Barbalinardo M.; Durso M.; Melucci M.; Cavallini M.

Institute for the Study of Nanostructured Materials, ISMN CNR Rome and Bologna Italy; Institute of Organic Synthesis and Photoreactivity, ISOF CNR Bologna Italy

Self-assembled monolayers (SAMs), combined with the lithography, were employed to fabricate functional surfaces. A new strategy in SAM technology, by using reiterated micro contact printing process, was proposed to produce a multi-level fluorescent TAG (multi-TAG), which consists of two overlapping micrometric patterns, made of a fluorescent oligothiophene SAM bonded with a Si/3-aminopropylthriethoxysilane substrate. The samples were characterized by fluorescence microscopy, X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). In particular, the process of chemical interaction occurring during the self-assembling was investigated. The obtained results showed that the SAM process occurred with the amidic bond formation. Moreover, the grazing-angle XPS measurements indicated that the horizontal arrangement of oligothiophene molecules on the substrate surface was preferred.

SIA. Surface and interface analysis 48 , pp. 626–629

Keywords

Chemical imaging, Micro-contact printing, RSAM, Surface functionalization, XPS

CNR authors

Durso Margherita, Barbalinardo Marianna, Kaciulis Saulius, Cavallini Massimiliano, Melucci Manuela, Mezzi Alessio, Brucale Marco, Gentili Denis

CNR institutes

ISOF – Istituto per la sintesi organica e la fotoreattività, ISMN – Istituto per lo studio dei materiali nanostrutturati, ISMN – ISMN - Sede secondaria di Bologna