Nanotubes

Rao, C. N. R.; Satishkumar, B. C.; Govindaraj, A.; Nath, Manashi

doi:10.1002/1439-7641(20010216)2:2<78::aid-cphc78>3.0.co;2-7

Cited by 610 publications

(118 citation statements)

References 288 publications

(261 reference statements)

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“…[16][17][18][19][20][21] Several other polycationic dendrimers such as poly(amidoamine) and poly(propyleneimine) have been synthesised. [22][23][24] Due to their unique one-dimensional structure and remarkable mechanical, thermal, optical and electronic properties, carbon nanotubes (CNTs), [25][26][27][28][29][30] can be considered as attractive candidates in diverse nanotechnological applications ranging from molecular electronics and quantum computing to materials science and biomedicine. [31][32][33][34] Although some of the applications discussed above can be realised through in situ growth or by the use of pristine single-walled CNTs (SWCNTs), many other uses require either solution phase processing/manipulations to achieve homogeneous dispersions within host materials or controlled surface modification with a variety of organic functionalities.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of mesitylene-based polyamine dendrimer for functionalisation of single-walled carbon nanotubes

Singh

2013

Journal of Experimental Nanoscience

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We have synthesised first generation (G1) of mesitylene-based polyamine dendrimer by following the convergent approach. The polyamine dendrimer was characterised by the usual spectroscopic techniques including liquid chromatography coupled with mass spectrometry. To develop polycationic functionalised carbon nanotubes (f-CNTs) as advanced systems for the delivery of nucleic acid, we attached G1 polyamine dendrimer onto the surface of single-walled CNTs (SWCNTs). The f-SWCNTs were characterised by thermogravimetric analysis and transmission electron microscopy. The nanotubes after functionalisation with polyamine dendrimer showed good dispersibility in highly polar solvents.

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Section: Introductionmentioning

confidence: 99%

Synthesis of mesitylene-based polyamine dendrimer for functionalisation of single-walled carbon nanotubes

Singh

2013

Journal of Experimental Nanoscience

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“…[1][2][3][4] In recent years, CNT have been proved to be a potential material for future nanodevice applications, such as nanoprobes, bioelectronics and biosensors. [5][6][7][8][9] There have been reports applying CNT in electrochemical catalysis of H2O2 and O2 through lowering the overpotentials of electrode processes.…”

Section: Introductionmentioning

confidence: 99%

Layer-by-layer Assembly of Prussian Blue and Carbon Nanotube Composites with Poly(diallyldimethylammonium chloride) for the Sensitive Detection of Hydrogen Peroxide

Yao

Shiu

2010

ANAL. SCI.

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Recently, there have been several reports integrating PB and CNT for hydrogen peroxide detection. [24][25][26] In this report, a simple procedure for the deposition of PB on the sidewalls of multi-walled carbon nanotubes (MWCNT) is explained. The resulting MWCNT-PB composite was used as a building block for the fabrication of multilayer structures on glassy carbon electrodes by the layer-by-layer technique. [27][28][29][30][31] Multilayer assemblies of MWCNT-PB composites were obtained by alternative dipping the electrode in separate solutions containing positively charged poly(diallyldimethylammonium chloride) (PDDA) and negatively charged MWCNT-PB composites. The multi-layered film showed sensitive detection for the reduction of hydrogen peroxide. The amount of MWCNT-PB deposits can be easily controlled, and the resulting material affects the sensitivity of the detection. This approach can be applied for the construction of high-performance biosensors and biofuel cells. Experimental Chemicals and reagentsMulti-walled carbon nanotubes were purchased from Nanoport Co. Ltd. (Shenzhen, China), and were treated in a 1:3 (v:v) mixture of concentrated HNO3-H2SO4 at 50 C for 24 h. The CNT materials were then thoroughly washed with doubly distilled water. The functionalized MWCNT materials were obtained by drying in vacuum at 70 C overnight. PDDA with a molecular weight range of 200000 -350000 was purchased 2010 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. Prussian blue (PB) was deposited on multi-walled carbon nanotubes (MWCNT) in an aqueous solution. Multi-layer composites of the MWCNT-PB hybride material were obtained by layer-by-layer assembly with poly(diallyldimethylammonium chloride) (PDDA). The resulting {PDDA/MWCNT-PB}n multilayer films immoblized on glassy carbon electrodes showed sensitive detection for the reduction of hydrogen peroxide. A sensor based on the {PDDA/MWCNT-PB}n multilayer structure was fabricated and showed excellent sensitivity to the electrochemical reduction of hydrogen peroxide. Its response sensitivity increased with the number of the multilayers. A high response sensitivity of 0.83 mA M -1 cm -2 was obtained for a seven-layer sensor. This redox active multilayer structure offers potential applications in the development of high performance biosensors and biofuel cells.

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“…However, up to now, the CNTs prepared by all currently known methods are mixtures of different tubes with a broad distribution in diameter and chirality, and often contaminated by impurities (mainly including amorphous carbon and catalyst particles). Various methods have been developed to purify CNTs, such as oxidation of contaminants [23][24][25][26][27][28], microfiltration [29], chromatographic procedures [30,31] and microwave irradiation [32][33][34].…”

Section: Introductionmentioning

confidence: 99%