scholarly journals Supramolecular structures of terbium(iii) porphyrin double-decker complexes on a single-walled carbon nanotube surface

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28135-28145
Author(s):  
Ahmed I. A. Abd El-Mageed ◽  
Takuji Ogawa

For the first time, using scanning probe microscopy, the supramolecular structures of terbium porphyrin double-decker complexes were observed on single-walled carbon nanotubes surfaces, where the molecules formed a well-ordered self-assembled array.

2010 ◽  
Vol 1258 ◽  
Author(s):  
Oleg Kononenko ◽  
S I Bozhko ◽  
V N Matveev ◽  
V T Volkov ◽  
M A Knyazev ◽  
...  

AbstractPd is widely used in producing electrodes to single-walled carbon nanotubes (SWNT). However up to now its ability to form ohmic contacts to SWNTs was not employed in scanning probe microscopy (SPM). Here we present a study of SWNTs with Pd electrodes by SPM using Pd-coated tips. SWNTs were selectively grown on oxidized silicon substrates by low pressure CVD method. Pd electrodes were prepared to SWNTs to fabricate two terminal structures for SWNTs resistance measurements. It is shown that SPM Kelvin mode is a reliable technique for SWNT detection on insulating substrate. Contact potential difference between Pd electrode and SWNT is measured using the Kelvin mode.


2019 ◽  
Vol 21 (7) ◽  
pp. 4063-4071 ◽  
Author(s):  
Ana Santidrián ◽  
José M. González-Domínguez ◽  
Valentin Diez-Cabanes ◽  
Javier Hernández-Ferrer ◽  
Wolfgang K. Maser ◽  
...  

The effect of doping on the electronic properties in bulk single-walled carbon nanotube (SWCNT) samples is studied for the first time using a new in situ Raman spectroelectrochemical method, and further verified by DFT calculations and photoresponse.


Author(s):  
Keiichi Katoh ◽  
Junya Sato ◽  
Ryo Nakanishi ◽  
Ferdous Ara ◽  
Tadahiro Komeda ◽  
...  

In this study, terbium(III) bis-phthalocyaninato single-molecule magnets (TbPc2 SMMs) were encapsulated in the internal nano space of single-walled carbon nanotubes (SWCNTs) for the first time. The magnetic and electronic properties...


2019 ◽  
Vol 4 (5) ◽  
pp. 1158-1163 ◽  
Author(s):  
Stepan A. Romanov ◽  
Ali E. Aliev ◽  
Boris V. Fine ◽  
Anton S. Anisimov ◽  
Albert G. Nasibulin

We present the state-of-the-art performance of air-coupled thermophones made of thin, freestanding films of randomly oriented single-walled carbon nanotubes (SWCNTs).


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Bo Han ◽  
Mingming Zhang ◽  
Ting Tang ◽  
Qiusheng Zheng ◽  
Keyu Wang ◽  
...  

Oxidized single-walled carbon nanotubes (o-SWNTs) was modified by covalently and noncovalently linking PEG to the o-SWNTs. The influence of oxidation time, PEG molecular weight, and type of PEG linkage on the blood clearance time of PEG-modified single-walled carbon nanotubes (SWNTs) was investigated. The toxicity profile of SWNTs covalently linked to PEG (c-PEG-o-SWNTs) in rats has also been determined. The pharmacokinetics of c-PEG-o-SWNTs in rats and their distribution in vital organs were monitored by Raman spectroscopy, and the blood clearance of homogenate isoliquiritigenin (ISL) was determined by HPLC. Photos of tissue and tissue sections were taken to evaluate the toxicity of c-PEG-o-SWNTs. We found that SWNTs which were covalently modified with PEG and have a molecular weight of 3500 had the longest blood clearance half-lives. However, SWNTs were toxic to the kidneys and the hearts. The high renal clearance of long-term fate SWNTs may occur because of impaired kidney filtration function. Therefore, we assume that while researchers study the long-term fate of SWNTs, the toxicity of SWNTs also needs to be taken into account.


2015 ◽  
Vol 2 (1) ◽  
pp. 81-85 ◽  
Author(s):  
Aron Pekker ◽  
Mingguang Chen ◽  
Elena Bekyarova ◽  
Robert C. Haddon

The linkage of single-walled carbon nanotube junctions by the photochemistry of organometallic chromium reagents produces dramatic increases in network conductivity.


MRS Bulletin ◽  
2004 ◽  
Vol 29 (4) ◽  
pp. 272-275 ◽  
Author(s):  
Paul L. McEuen ◽  
Ji-Yong Park

AbstractSingle-walled carbon nanotubes (SWNTs) are emerging as an important new class of electronic materials. Both metallic and semiconducting SWNTs have electrical properties that rival or exceed the best metals or semiconductors known. In this article, we review recent transport and scanning probe experiments that investigate the electrical properties of SWNTs.We address the fundamental scattering mechanisms in SWNTs, both in linear response and at high bias.We also discuss the nature and properties of contacts to SWNTs. Finally, we discuss device performance issues and potential applications in electronics and sensing.


2017 ◽  
Vol 5 (32) ◽  
pp. 6511-6522 ◽  
Author(s):  
Jing Pan ◽  
Feiran Li ◽  
Jong Hyun Choi

A review on the applications of single-walled carbon nanotube photoluminescence in biomolecular sensing and biomedical imaging.


2016 ◽  
Vol 18 (3) ◽  
pp. 1422-1428 ◽  
Author(s):  
Qiong He ◽  
Xiangdong Xu ◽  
Meng Wang ◽  
Minghui Sun ◽  
Yadong Jiang ◽  
...  

A series of vanadium oxide (VOx)–single-walled carbon nanotube (SWCNT) composite films with different SWCNT concentrations were prepared and systematically investigated. The critical SWCNT concentrations for modification of VOx films were experimentally deduced.


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