Interfacing porphyrins and carbon nanotubes through mechanical links. Issue 33 (18th July 2018)

• Record Type: Journal Article
• Authors: de Juan-Fernández, Leire; Münich, Peter W.; Puthiyedath, Arjun; Nieto-Ortega, Belén; Casado, Santiago; Ruiz-González, Luisa; Pérez, Emilio M.; Guldi, Dirk M.
• Is Part Of: Chemical science. Volume 9:Issue 33(2018)
• Page Start: 6779
• Page End: 6784
• Publication Date: 2018-07-18
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8sc02492h
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : U-shaped bisporphyrin molecules are clipped around SWCNTs using ring-closing metathesis yielding rotaxane-type derivatives, in which porphyrins and SWCNTs are connected through mechanical links. Abstract : We describe the synthesis of rotaxane-type species composed of macrocyclic porphyrin rings mechanically interlocked with SWCNT threads. The formation of mechanically interlocked SWCNTs (MINTs) proceeds with chiral selectivity, and was confirmed by spectroscopic and analytical techniques and adequate control experiments, and corroborated by high-resolution electron microscopy. From a thorough characterization of the MINTs through UV-vis-NIR absorption, fluorescence, Raman, and transient absorption spectroscopy we analyse in detail the electronic interactions of the porphyrins and the SWCNTs in the ground and excited states.