Bonding environment and electronic structure of Gd metallofullerene and Gd nanowire filled single‐wall carbon nanotubes

Abstract

Being single‐walled carbon nanotubes, archetypical 1D systems with peculiar anisotropic electronic properties, it is possible to infer modifications in a controlled manner by filling their inner hollow space. One successful approach was proposed for Gd, which regards filling with metallofullerenes and a successful transformation into different novelmetal nanowires by a versatile nanochemical reaction. In this contribution we report on a combined high resolution photoemission and X‐ray absorption study on Gd@C82 peapods and Gd nanowires.From a detailed analysis of the Gd 4d response and the valence band in photoemission we are able to elucidate the changes in the bonding environment and charge transfer in these 1D systems. We observe a clear modification of the low energy electronic properties of the SWCNT by the filling with Gd nanowires. Our findings provide important input to understand the interplay between charge transfer and hyridisation in the nanochemical processes in these hybrid systems and to elucidate their electronic transport properties regarding their application potential in nanoelectronic devices. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Electronic properties of pristine and modified single-walled carbon nanotubes

“…£ ÎËÕÇÓÂÕÖÓÇ ÑÒËÔÂÐÞ ÓÇÊÖÎßÕÂÕÞ ËÔÔÎÇAEÑÄÂÐËÌ C1s-ÔÒÇÍÕÓÑÄ ÐÂÐÑÕÓÖÃÑÍ, ÊÂÒÑÎÐÇÐÐÞØ ÏÑÎÇÍÖÎÂÏË Gd@C 82 [301], ×ÇÓÓÑÙÇÐÑÏ [324,326], ÙÇÓÑÙÇÐÑÏ [331,332], ÇÄÓÑÒËÇÏ [358], ØÎÑÓËAEÑÏ àÓÃËâ [359], ÅÂÎÑÅÇÐË-AEÂÏË ÔÇÓÇÃÓ [361], ÏÇAEË [362], ÉÇÎÇÊ [369], ÐËÍÇÎâ [366], ÏÂÓÅÂÐÙ [367], ÙËÐÍ [365,368] ²ËÔ. 14.…”

Advances in tailoring the electronic properties of single-walled carbon nanotubes

“…The encapsulation of fullerene C 60 [240,357], organic molecules (TCNQ and F 4 TCNQ [48]) and endohedral fullerene Gd@C 82 [49,256] [14,241,275,276] or supercritical СО 2 [297][298][299], and by the plasma filling method [335].…”

“…Nanochemical reactions inside the SWCNT channels open a way of fine tuning the SWCNT electronic structure by choosing a specific precursor and conditions for the reaction [49][50][51]. Thus, the electronic properties of SWCNTs can be engineered for particular applications.…”

“…Aside from interest of fundamental science, the possibility of modification of the SWCNT electronic properties by filling the channels [46][47][48] and conducting nanochemical reactions inside the nanotubes [49][50][51] was demonstrated. Starting from the aforementioned pioneer works, this topic got increasing attention in the last years, it is currently expanding and of large actuality.…”

“…In Refs. [49,250,256] The growth of inner tubes was also observed during the thermal treatment of SWCNTs filled with platinum acetylacetonate [266,270]. This chemical compound was introduced into the SWCNT channels using the methods from solution [266,270] or gas phase [270].…”