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In this work, single walled carbon nanotubes (SWNTs) have been chemically functionalized at their walls with a membrane protein, namely the mutated bacteriorhodopsin D96N, integrated in its native archaeal lipid membrane. The modification of the SWNT walls with the mutant has been carried out in different buffer solutions, at pH 5, 7.5 and 9, to investigate the anchoring process, the typical chemical and physical properties of the component materials being dependent on the pH. The SWNTs modified by interactions with bacteriorhodopsin membrane patches have been characterized by UV-vis steady state, Raman and attenuated total reflection Fourier transform infrared spectroscopy and by atomic force and transmission electron microscopy. The investigation shows that the membrane protein patches wrap the carbon walls by tight chemical interactions undergoing a conformational change; such chemical …
Royal Society of Chemistry
Publication date: 
1 Jan 2012

Chiara Ingrosso, Giuseppe Valerio Bianco, Patrizia Lopalco, Michela Tamborra, Maria Lucia Curri, Angela Corcelli, Giovanni Bruno, Angela Agostiano, Pietro Siciliano, Marinella Striccoli

Biblio References: 
Volume: 4 Issue: 20 Pages: 6434-6441