Release behaviour and toxicity evaluation of levodopa from carboxylated single-walled carbon nanotubes

• Julia M. Tan,
• Jhi Biau Foo,
• Sharida Fakurazi and
• Mohd Zobir Hussein

Beilstein J. Nanotechnol. 2015, 6, 243–253, doi:10.3762/bjnano.6.23

• , 1358, 1250, 1204, 1121, 1063, 982, 943, 866, 816, 678 and 528 cm−1 (Figure 1B). The bands between 3383 and 3068 cm−1 can be assigned to the –OH (hydroxy group) stretch in the phenol, –COOH stretch and N–H stretch vibration. A broad absorption band observed at 1650–1395 cm−1 is due to the aromatic rings

Mammalian cell growth on gold nanoparticle-decorated substrates is influenced by the nanoparticle coating

• Christina Rosman,
• Sebastien Pierrat,
• Marco Tarantola,
• David Schneider,
• Eva Sunnick,
• Andreas Janshoff and
• Carsten Sönnichsen

Beilstein J. Nanotechnol. 2014, 5, 2479–2488, doi:10.3762/bjnano.5.257

• order to improve contrast for imaging, the cell culture medium was replaced by a version without a phenol red pH indicator or any nutrients. As soon as imaging was finished, the medium was changed back to the full culture medium and the samples were kept in a cell culture incubator. Electric cell

Carbon nano-onions (multi-layer fullerenes): chemistry and applications

• Juergen Bartelmess and
• Silvia Giordani

Beilstein J. Nanotechnol. 2014, 5, 1980–1998, doi:10.3762/bjnano.5.207

• -borondipyrromethenes (azaBODIPYs) were attached to the CNOs through an amidation reaction [40]. In another very recent study, we attached a meso-phenol-substituted borondipyrromethene (BODIPY) fluorophore on the same benzoic acid functionalized CNO nanomaterial through an esterification reaction [41]. These

Different endocytotic uptake mechanisms for nanoparticles in epithelial cells and macrophages

• Dagmar A. Kuhn,
• Dimitri Vanhecke,
• Benjamin Michen,
• Fabian Blank,
• Peter Gehr,
• Alke Petri-Fink and
• Barbara Rothen-Rutishauser

Beilstein J. Nanotechnol. 2014, 5, 1625–1636, doi:10.3762/bjnano.5.174

• phenol red pH indicator) was added with either 40 nm or 1 µm polystyrene particles alone or in combination with the inhibitor, and time lapse imaging was started. The live cell imaging ran over a time period of 60 minutes during which the cells were kept in a constant environmental at 37 °C and 5% CO2

Synthesis of hydrophobic photoluminescent carbon nanodots by using L-tyrosine and citric acid through a thermal oxidation route

• Venkatesh Gude

Beilstein J. Nanotechnol. 2014, 5, 1513–1522, doi:10.3762/bjnano.5.164

• and the weak signals appearing in the region of 168.87–170.08 ppm evidence the presence of carbonyl carbon atoms. From TEM, FTIR, 1H NMR analysis one can understand that the surface of the CNDs is covered by phenol moieties, which indicates a selective participation of L-tyrosine during the

Organic and inorganic–organic thin film structures by molecular layer deposition: A review

• Pia Sundberg and
• Maarit Karppinen

Beilstein J. Nanotechnol. 2014, 5, 1104–1136, doi:10.3762/bjnano.5.123

• the films had an excellent field effect mobility (>1.3 cm2·V−1·s). When TEM was used to observe structures obtained with 50 cycles of TiO2 and one cycle of TiCl4+HDD, individual nanolayers from each material could be seen [55][56]. Benzene-1,4-diol (hydroquinone, HQ), a phenol with two –OH groups in a

• to 1.6 Å per cycle at 310 °C [113]. Other organic precursors Only three organic precursors have been used that cannot be included in the alcohol/phenol, acid or amine categories, namely ethanetetracarbonitrile, which is, like the name indicates, a nitrile, 2-oxepanone, a cyclic ester, and 1,2-bis

DFT study of binding and electron transfer from colorless aromatic pollutants to a TiO₂ nanocluster: Application to photocatalytic degradation under visible light irradiation

• Corneliu I. Oprea,
• Petre Panait and
• Mihai A. Gîrţu

Beilstein J. Nanotechnol. 2014, 5, 1016–1030, doi:10.3762/bjnano.5.115

• level alignment between the pollutant and the catalyst as well as the charge transfer between the pollutants and the oxide. We compare our theoretical results with the experimental data available, particularly with the work of Wang et al. [14] on phenol (Ph), benzoic acid (BA), p-hydroxybenzoic acid

• on the catalyst, the electronic states were accurately computed by using DZVP basis sets [40]. The Gaussian03 package [41] was used in all calculations. Free pollutants – electronic structure and optical properties During the photocatalytic degradation the benzene derivatives (phenol, Ph, benzoic

Carbon dioxide hydrogenation to aromatic hydrocarbons by using an iron/iron oxide nanocatalyst

• Hongwang Wang,
• Jim Hodgson,
• Tej B. Shrestha,
• Prem S. Thapa,
• David Moore,
• Xiaorong Wu,
• Myles Ikenberry,
• Deryl L. Troyer,
• Donghai Wang,
• Keith L. Hohn and
• Stefan H. Bossmann

Beilstein J. Nanotechnol. 2014, 5, 760–769, doi:10.3762/bjnano.5.88

• suboxide. Trimerization of hydrogenated carbon suboxide on Fe3O4. Keto–enol tautomerism leads to aromatization. Reduction of the intermediate phenol derivative to mesitylene. Demethylation is at this stage of mechanistic research the most likely process explaining the formation of xylenes, toluene, and

Nanostructure sensitization of transition metal oxides for visible-light photocatalysis

• Hongjun Chen and
• Lianzhou Wang

Beilstein J. Nanotechnol. 2014, 5, 696–710, doi:10.3762/bjnano.5.82

• composite photocatalysts in the case of the photocatalytic degradation of phenol under visible light irradiation [95] (Figure 7b). In this photo-excitation process, carbon nanotubes are firstly excited by visible light and transfer electrons to the CB of a transition metal oxide for the reduction reaction

A catechol biosensor based on electrospun carbon nanofibers

• Dawei Li,
• Zengyuan Pang,
• Xiaodong Chen,
• Lei Luo,
• Yibing Cai and
• Qufu Wei

Beilstein J. Nanotechnol. 2014, 5, 346–354, doi:10.3762/bjnano.5.39

• laccase–Nafion–ECNFs/GCE exhibits a quite outstanding analytical performance and this new sensor could be useful in the detection of catechol. Interferences and biosensor stability Catechol and some other phenolic compounds, including catechin, epicatechin, gallic acid, guaiacol, phenol and aminophenol

• , phenol and aminophenol; 100 µM in 0.2 M acetate buffer (pH 5.5), respectively). Storage stability of the laccase–Nafion–ECNFs/GCE in 0.2 M acetate buffer (pH 4.0) at 4 °C. Performance comparison of different laccase modified electrodes. Recovery experiment of detection of catechol in real water samples

Spin relaxation in antiferromagnetic Fe–Fe dimers slowed down by anisotropic Dy^III ions

• Valeriu Mereacre,
• Frederik Klöwer,
• Yanhua Lan,
• Rodolphe Clérac,
• Juliusz A. Wolny,
• Volker Schünemann,
• Christopher E. Anson and
• Annie K. Powell

Beilstein J. Nanotechnol. 2013, 4, 807–814, doi:10.3762/bjnano.4.92

• = DyIII, L = N-(n-butyl)diethanolamine, solv = 3(MeCN), 1, see below in Figure 1) and Ln = YIII, L = N-methyldiethanolamine, solv = phenol, 2) are magnetically and spectroscopically studied and their properties are compared. Results and Discussion Compound 1 crystallizes in the triclinic space group P−1

• ·6H2O (0.22 g, 0.50 mmol), pivalic acid (0.41 g, 4.00 mmol) and phenol (0.05 g, 0.50 mmol),. The mixture was further stirred until it became clear. The solution was filtered and left for slow evaporation. After one week red crystals of 1 were obtained. Yield 34.7% (based on Fe); Anal. calcd for

Synthesis and catalytic applications of combined zeolitic/mesoporous materials

• Jarian Vernimmen,
• Vera Meynen and
• Pegie Cool

Beilstein J. Nanotechnol. 2011, 2, 785–801, doi:10.3762/bjnano.2.87

• similar to TS-1 [51], and which shows a strong oxidation ability in the (substituted-) phenol hydroxylation and exhibits a high hydrothermal stability. Also one-pot templating approaches have already given rise to promising materials, such as Ti-MMM-1 [52], which is a much more selective catalyst for the

• importance of TS-1 for oxidation catalysis (the three upper reactions in Figure 10) [171][172][182][183]: Hydroxylation of phenol: This reaction occurs in aqueous or aqueous-organic medium producing a mixture of hydroquinone (p-dihydroxybenzene) and catechol (o-dihydroxybenzene), which can be used as a

• examples have already been reported in the literature [51][52][58][59][78][79][82][122]. For example, MTS-9 [52] shows a high hydrothermal stability (over 120 hours in boiling water) and a high oxidation ability for small (phenol and styrene) as well as larger molecules (2,3,6-trimethylphenol) with 30

Magnetic nanoparticles for biomedical NMR-based diagnostics

• Huilin Shao,
• Tae-Jong Yoon,
• Monty Liong,
• Ralph Weissleder and
• Hakho Lee

Beilstein J. Nanotechnol. 2010, 1, 142–154, doi:10.3762/bjnano.1.17

• sequences produced by hTERT activity [54]. More recently, myeloperoxidase (MPO) sensors were generated by attaching phenol-containing molecules, such as dopamine or serotonin, to CLIO nanoparticles [41]. In the presence of peroxidase activity, tyroxyl radicals were formed to cross-link the nanoparticles