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15.101 Aktuelle Fachpublikationen zum Thema temperature

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Sensitive impedimetric biosensor based on duplex–like DNA scaffolds and ordered mesoporous carbon nitride for silver(I) ion detection

22.10.2014 | Yaoyu Zhou; Lin Tang; Xia Xie; Guangming Zeng; Jiajia Wang; Yaocheng Deng; Guide Yang; Chen Zhang; Yi Zhang; Jun Chen, Analyst, 2014

This study demonstrates a new unlabeled immobilized DNA–based biosensor with ordered mesoporous carbon nitride material (MCN) for detection of Ag+ by electrochemical impedance spectroscopy (EIS) with [Fe(CN)6]4–/3– as redox couple. The unlabeled immobilized DNA initially formed the hairpin ...

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In vitro HER2 protein-induced affinity dissociation of carbon nanotube-wrapped anti-HER2 aptamers for HER2 protein detection

22.10.2014 | Javed H. Niazi; Sandeep Kumar Verma; Sarfaraj Niazi; Anjum Qureshi, Analyst, 2014

A new in vitro assay was developed to detect human epidermal growth factor receptor 2 (HER2) protein based on affinity dissociation of carbon nanotube (CNT)-wrapped anit-HER2 ssDNA aptamers. First, we selected an anti-HER2 ssDNA aptamer (H2) using an in vitro Serial Evolution of Ligands by ...

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Platinum nanoparticles strongly associated with graphitic carbon nitride as efficient co-catalysts for photocatalytic hydrogen evolution under visible light

21.10.2014 | Yasuhiro Shiraishi; Yusuke Kofuji; Shunsuke Kanazawa; Hirokatsu Sakamoto; Satoshi Ichikawa; Shunsuke Tanaka; Takayuk ..., Chemical Communication, 2014

Platinum (Pt) nanoparticles with <4 nm diameter loaded on graphitic carbon nitride (g-C3N4) by reduction at 673 K behave as efficient co-catalysts for photocatalytic hydrogen evolution under visible light (λ

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Catalytic methylation of aromatic amines with formic acid as the unique carbon and hydrogen source

21.10.2014 | Solène Savourey; Guillaume Lefèvre; Jean-Claude Berthet; Thibault Cantat, Chemical Communication, 2014

A novel methodology is presented for the direct methylation of amines, using formic acid as a unique source of carbon and hydrogen. Based on ruthenium(ii) catalysts, the formation of the N–CH3 group proceeds via an efficient formylation/transfer hydrogenation pathway.

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Direct exfoliation of carbon allotropes with structural analogues of self-assembled nanostructures and their photovoltaic applications

21.10.2014 | Woochul Lee; Dong-Woo Lee; Myongsoo Lee; Jong-In Hong, Chemical Communication, 2014

Aromatic amphiphiles were self-assembled into 2-D nanosheets and 1-D nanofibers by systematically varying the volume fraction of the hydrophilic coils, which enabled the direct exfoliation of carbon allotropes with high quality and quantity. A 2-D nanosheet structure was introduced as the hole ...

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Concluding Remarks: There's Nowt so Queer as Carbon Electrodes

21.10.2014 | P R Unwin, Faraday Discussions, 2014

(I believe that no abstract is required for 'Concluding remarks')

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Carbon quantum dots and their applications

21.10.2014 | Shi Ying Lim; Wei Shen; Zhiqiang Gao, Chemical Society Reviews, 2014

Fluorescent carbon nanoparticles or carbon quantum dots (CQDs) are a new class of carbon nanomaterials that have emerged recently and have garnered much interest as potential competitors to conventional semiconductor quantum dots. In addition to their comparable optical properties, CQDs have the ...

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Isotope Ratio Analysis of Carbon and Nitrogen by Elemental Analyser Continuous Flow Isotope Ratio Mass Spectrometry (EA-CF-IRMS) without the Use of a Reference Gas

21.10.2014 | Lian Jie Bay; Joanne Sheot Harn Chan; Thomas Walczyk, Journal of Analytical Atomic Spectrometry, 2014

A new approach to normalize measured isotope ratios (carbon and nitrogen) in elemental analyser continuous flow isotope ratio mass spectrometry (EA-CF-IRMS) was evaluated. Isotope ratios of the sample are altered during the IRMS measurement and must be corrected for instrumental isotope ...

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The Direct Electrophilic Cyanation of [small beta]-Keto Esters and Amides with Cyano Benziodoxole

21.10.2014 | Yao-Feng Wang; Jiashen Qiu; Dejie Kong; Yongtao Gao; Feipeng Lu; Pran Gopal Karmaker; fuxue chen, Organic & Biomolecular Chemistry, 2014

The direct electrophilic α-cyanation of β-keto esters and amides has been developed using hypervalent iodine benziodoxole-derived cyano reagent. It accomplishes within 10 min without any catalyst in DMF at room temperature. Thus, the highly functionallized quaternary carbon-centered nitriles were ...

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Facile synthesis of carbon-doped mesoporous anatase TiO2 for the enhanced visible-light driven photocatalysis

21.10.2014 | Juming Liu; Qiancheng Zhang; Jucai Yang; Huiyan Ma; Moses O. Tade; Shaobin Wang; Jian Liu, Chemical Communication, 2014

Here we report a low-cost and facile synthesis approach for carbon-doped mesoporous anatase TiO2 by using Ti(BuO)4 as a source for both Ti and carbon through xerogel carbonization in a hypoxic atmosphere. The resultant mesoporous C-TiO2 with high crystallinity exhibits excellent photocatalytic ...

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