Accurate control of the covalent functionalization of single-walled carbon nanotubes for the electro-enzymatically controlled oxidation of biomolecules

• Naoual Allali,
• Veronika Urbanova,
• Mathieu Etienne,
• Xavier Devaux,
• Martine Mallet,
• Brigitte Vigolo,
• Jean-Joseph Adjizian,
• Chris P. Ewels,
• Sven Oberg,
• Alexander V. Soldatov,
• Edward McRae,
• Yves Fort,
• Manuel Dossot and
• Victor Mamane

Beilstein J. Nanotechnol. 2018, 9, 2750–2762, doi:10.3762/bjnano.9.257

• surface of the CNTs. This system can be applied to biosensing, as exemplified for glucose detection. The well-controlled and well-characterized functionalization of essentially clean SWCNTs enabled us to establish the maximum level of impurity content, below which the f-SWCNT intrinsic electrochemical

• application of these f-SWCNTs in biosensing, the electrode was further modified with HIPCO-H2SO4-FcEtG2, diaphorase, NADH and glucose dehydrogenase (GDH). Upon addition of glucose into the solution, the molecules were oxidized by GDH in gluconolactone and NADH cofactor was simultaneously produced. NADH was

• then oxidized by diaphorase, mediated by ferrocene moieties. Figure 11C shows the electrochemical response in the absence of glucose (dashed curve, 0 mM of glucose). The reversible electrochemical signal of ferrocene can be distinguished as in curve a) of Figure 11B. After addition of glucose, the

Nanoantenna structures for the detection of phonons in nanocrystals

• Alexander G. Milekhin,
• Sergei A. Kuznetsov,
• Ilya A. Milekhin,
• Larisa L. Sveshnikova,
• Tatyana A. Duda,
• Ekaterina E. Rodyakina,
• Alexander V. Latyshev,
• Volodymyr M. Dzhagan and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2018, 9, 2646–2656, doi:10.3762/bjnano.9.246

• substances of extremely low concentrations. For example, Adato et al. demonstrated the detection of a concentration as low as 145 protein molecules per nanoantenna [19]. SEIRA has been extended to the far-IR spectral range for which special nanoscale slot-antenna arrays were designed to determine glucose and

SERS active Ag–SiO₂ nanoparticles obtained by laser ablation of silver in colloidal silica

• Cristina Gellini,
• Francesco Muniz-Miranda,
• Alfonso Pedone and
• Maurizio Muniz-Miranda

Beilstein J. Nanotechnol. 2018, 9, 2396–2404, doi:10.3762/bjnano.9.224

• adhere to silica can be stabilized in colloidal suspensions far better than in pure metal colloids, providing improved reproducibility of the SERS data. The second motivation is to exploit the adsorption capability of the colloidal silica for various organic ligands, for example glucose, formaldehyde

Hydrothermal-derived carbon as a stabilizing matrix for improved cycling performance of silicon-based anodes for lithium-ion full cells

• Mirco Ruttert,
• Florian Holtstiege,
• Jessica Hüsker,
• Markus Börner,
• Martin Winter and
• Tobias Placke

Beilstein J. Nanotechnol. 2018, 9, 2381–2395, doi:10.3762/bjnano.9.223

• of silicon/carbon composites and of the pure hydrothermal carbon matrix Silicon/carbon (Si/C) composites and the pure carbon matrix were synthesized in a hydrothermal process using a solution of anhydrous D-glucose (Fisher Scientific) in water (0.75 mol L−1) as the carbon source in the presence or

• absence of commercially available Si-NPs (100 nm, NANO Si, Creavis) with D-glucose:Si weight ratios of 77.5:1 and 45.5:1, respectively. Therefore, D-glucose was dissolved in deionized (DI) water by stirring for 15 min. At the same time, in the case of Si-containing samples, Si-NPs were dispersed in a

• small amount of DI water and added to the D-glucose solution. A specific volume was set to obtain a glucose concentration of 0.75 mol L−1. The (combined) solution was treated in an ultrasonic bath for 45 min in order to break agglomerates and obtain a homogeneous suspension. For the hydrothermal

The structural and chemical basis of temporary adhesion in the sea star Asterina gibbosa

• Birgit Lengerer,
• Marie Bonneel,
• Mathilde Lefevre,
• Elise Hennebert,
• Philippe Leclère,
• Emmanuel Gosselin,
• Peter Ladurner and
• Patrick Flammang

Beilstein J. Nanotechnol. 2018, 9, 2071–2086, doi:10.3762/bjnano.9.196

• the presence of various sugar moieties (N-acetylgalactosamine, N-acetylglucosamine, galactose, mannose and glucose residues) within the adhesive material [28]. Among sea stars, the protein and carbohydrate composition of the adhesive material has been solely investigated in the species A. rubens. Yet

Closed polymer containers based on phenylboronic esters of resorcinarenes

• Tatiana Yu. Sergeeva,
• Rezeda K. Mukhitova,
• Irek R. Nizameev,
• Marsil K. Kadirov,
• Polina D. Klypina,
• Albina Y. Ziganshina and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 1594–1601, doi:10.3762/bjnano.9.151

• resorcinarene (SRA) with phenylboronic acid. p(SRA-B) shows good stability in water and can be used as a nanocontainer for the pH- and glucose-controlled substrate release. Fluorescent dyes (fluorescein, pyrene and 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt) were successfully loaded into p(SRA-B). The

• release of dye is achieved by lowering the pH value to 3 or by adding glucose. Keywords: boronic acid; polymer nanocontainer; resorcinarene; responsive release; Introduction Boronic acids effectively interact with diols [1][2][3][4] that have found application in various fields: in the recognition and

• . The container (p(SRA-B)) consists of sulfonated resorcinarenes (SRA) interconnected by phenylboronic ester bonds. The decrease of the pH value or the addition of glucose affects the boronate bond causing its dissociation and disintegration of the container. Herein, we report the synthesis of p(SRA-B

Cr(VI) remediation from aqueous environment through modified-TiO₂-mediated photocatalytic reduction

• Rashmi Acharya,
• Brundabana Naik and
• Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 1448–1470, doi:10.3762/bjnano.9.137

• (pH 2) exhibited higher photoreduction due to the interfacial charge transfer by RGO [135]. A maximum of 96% Cr(VI) reduction was achieved. An RGO–TiO2 composite photocatalyst was prepared by a wet impregnation route followed by surface complexation with a simple glucose molecule. The prepared

• photocatalyst reduced 100% of 30 mg L−1 Cr(VI) within 60 minutes under illumination with visible light. The role of glucose is to enhance the light absorption and separation of charge carriers through complex formation with RGO/TiO2. This leads to the increase in photocatalytic reduction of Cr(VI) [136]. Chen

Electrodeposition of reduced graphene oxide with chitosan based on the coordination deposition method

• Mingyang Liu,
• Yanjun Chen,
• Chaoran Qin,
• Zheng Zhang,
• Shuai Ma,
• Xiuru Cai,
• Xueqian Li and
• Yifeng Wang

Beilstein J. Nanotechnol. 2018, 9, 1200–1210, doi:10.3762/bjnano.9.111

• electrochemical detection of glucose, NH3 gas, NO2 gas, ethanol and acetone [40][41][42][43]. Besides, graphene-based sensors have been used to detect phenolic compounds which are aromatic pollutants to the environment and human health [44][45]. These graphene-based sensors exhibit the high detection performance

Noble metal-modified titania with visible-light activity for the decomposition of microorganisms

• Maya Endo,
• Zhishun Wei,
• Kunlei Wang,
• Baris Karabiyik,
• Kenta Yoshiiri,
• Paulina Rokicka,
• Bunsho Ohtani,
• Agata Markowska-Szczupak and
• Ewa Kowalska

Beilstein J. Nanotechnol. 2018, 9, 829–841, doi:10.3762/bjnano.9.77

• (IIT&EE ZUT collection). The antimicrobial activity of the photocatalysts was tested by using disc diffusion [80]. Culture plates were prepared with 20 mL of two solid media: Sabouraud Glucose Agar SGA (BIOCORP, Poland) for C. albicans and Malt Extract Agar (Merck, Germany) for mould fungi. Sterilized

Cyclodextrin-assisted synthesis of tailored mesoporous silica nanoparticles

• Fuat Topuz and
• Tamer Uyar

Beilstein J. Nanotechnol. 2018, 9, 693–703, doi:10.3762/bjnano.9.64

• ], while HP-functionalized CDs are highly water-soluble (according to the manufacturer “Wacker Chemie AG”, the solubility of HP-β-CD and HP-γ-CD is, respectively, 2300 g/L and 800 g/L). In water, pristine CDs form aggregates in the size range of 200–300 nm depending on the number of glucose units in the

Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation

• Ashish Kumar,
• Christian Schuerings,
• Suneel Kumar,
• Ajay Kumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2018, 9, 671–685, doi:10.3762/bjnano.9.62

• pollutants from water very effectively. Experimental Materials Both titanium diisopropoxide bis(acetylacetonate) and dicyandiamide were purchased from Sigma-Aldrich, India. Calcium nitrate (Ca(NO3)2·4H2O), acrylamide and D-glucose were supplied by MP Biomedicals, India. Ammonia solution (NH3 about 25

• g of glucose and 0.135 mol of acrylamide were successively added with constant stirring. The thus-obtained viscous solution was made up to 100 mL by adding distilled water, and aqueous ammonia was added dropwise to get a final pH of 2. This solution was heated at 70 °C on a hot plate to initiate the

Mechanistic insights into plasmonic photocatalysts in utilizing visible light

• Kah Hon Leong,
• Azrina Abd Aziz,
• Lan Ching Sim,
• Pichiah Saravanan,
• Min Jang and
• Detlef Bahnemann

Beilstein J. Nanotechnol. 2018, 9, 628–648, doi:10.3762/bjnano.9.59

• electrocatalytic oxidation adopting glucose accelerated by Au NPs upon LSPR excitation under a suitable voltage bias. The hot electrons injected from Au NPs can be driven into the external circuit to deliver appreciable current, while the holes facilitate the electrocatalytic oxidation of glucose owing to their

Green synthesis of fluorescent carbon dots from spices for in vitro imaging and tumour cell growth inhibition

• Nagamalai Vasimalai,
• Vânia Vilas-Boas,
• Juan Gallo,
• María de Fátima Cerqueira,
• Mario Menéndez-Miranda,
• José Manuel Costa-Fernández,
• Lorena Diéguez,
• Begoña Espiña and
• María Teresa Fernández-Argüelles

Beilstein J. Nanotechnol. 2018, 9, 530–544, doi:10.3762/bjnano.9.51

• (DMEM) with high glucose content and all other chemicals were purchased from Sigma-Aldrich (Spain). Ultrapure water (18.2 MΩ·cm at 25 °C, Millipore USA) was used throughout the experiments. Dulbecco’s modified Eagle’s medium with nutrient mixture F-12 (DMEM/F-12) and GlutaMAX-I™, trypsin 0.25%–EDTA

• glucose, supplemented with 10% FBS and 100 U·mL−1 penicillin/100 μg·mL−1 streptomycin. Both cell lines (passages 5 to 12) were maintained in a humidified atmosphere with 5% CO2, at 37 °C. Cell viability test Cells were seeded in 96-well plates at a density of 10,000 cells per well. On the following day

Colloidal solution of silver nanoparticles for label-free colorimetric sensing of ammonia in aqueous solutions

• Alessandro Buccolieri,
• Antonio Serra,
• Gabriele Giancane and
• Daniela Manno

Beilstein J. Nanotechnol. 2018, 9, 499–507, doi:10.3762/bjnano.9.48

• other hand, the presence of glucose acting as reducing agent promotes the synthesis of silver nanoparticles [25]. The addition of ammonia can change the kinetics of the synthesis of silver nanoparticles improving oxidation of hydroxy groups in glucose, and giving rise to an accelerated reduction of

• compared to physiological systems of ammonia in organic fluids (blood or urine). However, this study is preliminary to address the problem of interfering species, e.g., proteins, enzymes and mineral salts. We highlighted that colloidal AgNPs solutions synthesized using both glucose and sucralose as

• concentrations of ammonia, such as for example the work of Detsri and Popanyasak [38], which discussed the effect of HN3 in a concentration varying between 10 and 800 mM, corresponding to the range from 1.8·102 to 1.4·104 ppm. Conclusion Sucralose–glucose silver nanoparticles have been successfully synthetized

Liquid-crystalline nanoarchitectures for tissue engineering

• Baeckkyoung Sung and
• Min-Ho Kim

Beilstein J. Nanotechnol. 2018, 9, 205–215, doi:10.3762/bjnano.9.22

• [36] and drug delivery systems [37]. For tissue regeneration, the mostly studied biomaterials are collagen and chitin, which are, respectively, protein-based and glucose-based biopolymers [38][39]. When denatured, collagen and chitin can be transformed into gelatin and chitosan, respectively, which

Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels

• Stefanie Krüger,
• Michael Schwarze,
• Otto Baumann,
• Christina Günter,
• Michael Bruns,
• Christian Kübel,
• Dorothée Vinga Szabó,
• Rafael Meinusch,
• Verónica de Zea Bermudez and
• Andreas Taubert

Beilstein J. Nanotechnol. 2018, 9, 187–204, doi:10.3762/bjnano.9.21

• authors also showed that methanol is the most efficient sacrificial agent when compared to isopropanol, glycerol, and glucose [25]. A further study by Jose et al. focused on the effect of TiO2 modification (anatase and/or rutile). These authors observed that TiO2 P25/Au mixed systems performed best in the

Co-reductive fabrication of carbon nanodots with high quantum yield for bioimaging of bacteria

• Jiajun Wang,
• Xia Liu,
• Gesmi Milcovich,
• Tzu-Yu Chen,
• Edel Durack,
• Sarah Mallen,
• Yongming Ruan,
• Xuexiang Weng and
• Sarah P. Hudson

Beilstein J. Nanotechnol. 2018, 9, 137–145, doi:10.3762/bjnano.9.16

• decrease in QY. The results indicated that it acquired a highest reduced atmosphere when the molar ratio of urea to thiourea is about 3. To demonstrate the rationale of co-reduced C-dot production method, glucose and xylose were used as the model carbon source references. Glucose and xylose were selected

• glucose were purchased from Aladdin Ltd. (Shanghai, China). Nutrient broth (NB) medium (1 g L−1 yeast extract, 3 g L−1 beef extract, 5 g L−1 poly peptone, 10 g L−1 sucrose) was purchased from Sigma-Aldrich. All other chemicals were of analytical grade and used as received. Double distilled water was used

Hyperthermic intracavitary nanoaerosol therapy (HINAT) as an improved approach for pressurised intraperitoneal aerosol chemotherapy (PIPAC): Technical description, experimental validation and first proof of concept

• Daniel Göhler,
• Stephan Große,
• Alexander Bellendorf,
• Thomas Albert Falkenstein,
• Mehdi Ouaissi,
• Jürgen Zieren,
• Michael Stintz and
• Urs Giger-Pabst

Beilstein J. Nanotechnol. 2017, 8, 2729–2740, doi:10.3762/bjnano.8.272

• same aqueous glucose solution (Glucosterile® 5%, Fresenius Kabi GmbH, Germany) at a similar distance of ≤5 mm between aerosol outlet and laser beam (laser wavelength of 632.8 nm) and with equal signal evaluation (i.e., Fraunhofer theory). The LAU was operated with compressed air at system pressures of

• aqueous glucose solution (Glucosterile® 5%, Fresenius Kabi GmbH, Germany) at 28 °C. Cross-check analyses concerning possible vaporization effects within the experimental setup were performed with silicon oil (Elbesil-Oil B10, Böwing GmbH, Germany). The HINAT-LAU aerosol was characterised for a 1 bar and a

The role of ligands in coinage-metal nanoparticles for electronics

• Ioannis Kanelidis and
• Tobias Kraus

Beilstein J. Nanotechnol. 2017, 8, 2625–2639, doi:10.3762/bjnano.8.263

• hexadecylamine (Figure 2) as ligand and glucose as reducing agent. The amine showed good selectivity towards the {100} facets and prevented multiply twinned seeds from being etched, leading to copper nanowires by the reduction of CuCl2 in an aqueous dispersion. At lower amine concentrations, twinned seeds were

Bi-layer sandwich film for antibacterial catheters

• Gerhard Franz,
• Florian Schamberger,
• Hamideh Heidari Zare,
• Sara Felicitas Bröskamp and
• Dieter Jocham

Beilstein J. Nanotechnol. 2017, 8, 1982–2001, doi:10.3762/bjnano.8.199

• influence on the porosity, and the influence of the above properties on the release rate of antibacterial Ag+ ions. Experimental Silver film Deposition The deposition of metallic silver is an electroless reaction in aqueous solution. Silver ions are reduced by a saccharide (glucose or maltose) at elevated

• + solution (AgNO3 dissolved in a surplus of aqueous ammonia (type TL, Medorex, Nörten-Hardenberg, Germany), to which a certain amount of a monosaccharide (glucose) or a disaccharide (maltose) is added (denoted as Tollens’ reagent) and air (Figure 9), by which a chain of bubbles is generated, consisting of

A biofunctionalizable ink platform composed of catechol-modified chitosan and reduced graphene oxide/platinum nanocomposite

• Peter Sobolewski,
• Agata Goszczyńska,
• Małgorzata Aleksandrzak,
• Karolina Urbaś,
• Joanna Derkowska,
• Agnieszka Bartoszewska,
• Jacek Podolski,
• Ewa Mijowska and
• Mirosława El Fray

Beilstein J. Nanotechnol. 2017, 8, 1508–1514, doi:10.3762/bjnano.8.151

• probe function and that the ink itself does not yield substantial non-specific binding of DNA. Further studies will be conducted to evaluate the potential of this ink platform for other biosensing systems, including electrochemical detection and/or glucose biosensing. Experimental Preparation of reduced

Characterization of ferrite nanoparticles for preparation of biocomposites

• Urszula Klekotka,
• Magdalena Rogowska,
• Dariusz Satuła and
• Beata Kalska-Szostko

Beilstein J. Nanotechnol. 2017, 8, 1257–1265, doi:10.3762/bjnano.8.127

• with a bioparticle was studied. In subsequent steps, the nanoparticles were immobilized with enzymes such as albumin, glucose oxidase, lipase and trypsin as a test bioparticles. The characterization of the nanoparticles was acheived by transmission electron microscopy, X-ray diffraction, energy

• dispersive X-ray and Mössbauer spectroscopy. The effect of the obtained biocomposites was monitored by Fourier transform infrared spectroscopy. The obtained results show that in some cases the use of glutaraldehyde was crucial (albumin). Keywords: albumin; EDX; glucose oxidase; IR spectroscopy; lipase

• , we have used nanoparticles with or without attached glutaraldehyde that served as a linker between the nanoparticle and enzymes and gives more space for interaction. The enzymes tested in this paper were: albumin, glucose oxidase, lipase, and trypsin. This study is a continuation of our previous

Nanoantenna-assisted plasmonic enhancement of IR absorption of vibrational modes of organic molecules

• Alexander G. Milekhin,
• Olga Cherkasova,
• Sergei A. Kuznetsov,
• Ilya A. Milekhin,
• Ekatherina E. Rodyakina,
• Alexander V. Latyshev,
• Sreetama Banerjee,
• Georgeta Salvan and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2017, 8, 975–981, doi:10.3762/bjnano.8.99

• , corresponding to only 145 molecules per antenna [20]. A similar approach is used for the terahertz (or far-IR) spectral range for which special nanoscale slot-antenna arrays were designed to determine glucose and fructose in solutions, including market beverages [21]. Terahertz transmittance measurements were

• and in several tissues and regulates blood glucose levels. Cortisol production disorders lead to the development of diabetes, Cushing's syndrome and other pathologies [36]. Therefore, the determination of the cortisol concentration in blood and tissue is important. The immunoassay methods are

Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields

• Arpita Jana,
• Elke Scheer and
• Sebastian Polarz

Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74

• results in an improved electrochemical performance [172]. Symmetric supercapacitors are based on Co3O4 NPs on vertically aligned graphene. This hybrid has also been used for nonenzymatic glucose detection in microdroplets [173]. Wang et al. fabricated graphene–Co3O4 hybrid electrodes constructed on a

• micropipette tip which can detect nonenzymatic glucose [173]. N-doped graphene/Co3O4 has been used for selective oxidation of olefins and alcohols [174], LIBs [175], and oxygen reduction [176], and as a water electrolysis catalyst [177]. Co3O4 NPs were anchored on conducting graphene and used as an anode for

• used for enzymeless glucose detection [191] and determination of carbofuran and carbaryl in fruits and vegetables [192]. Instead of using cobalt oxide–graphene hybrids, Yao et al. have synthesised a cobalt hydroxide nanoflake–rGO hybrid by a one-pot hydrothermal method using glucose as a reducing agent

Association of aescin with β- and γ-cyclodextrins studied by DFT calculations and spectroscopic methods

• Ana I. Ramos,
• Pedro D. Vaz,
• Susana S. Braga and
• Artur M. S. Silva

Beilstein J. Nanotechnol. 2017, 8, 348–357, doi:10.3762/bjnano.8.37

• with six (α-CD), seven (β-CD) and eight (γ-CD) units of α-D-glucose, which occur in nature from bacterial degradation of starch [13]. Their particular shape – a truncated cone with a hydrophobic cavity and a large number of hydroxy groups at the rims – enables them to include a variety of hydrophobic

• << complex γ3. The most stable geometry is found with complex γ1 and it involves inclusion of the triterpenic moiety of aescin into γ-CD. Nonetheless, the difference in energy to that of complex γ2 is only +27.1 kJ/mol. This means that this second geometry, in which γ-CD docks at one of the glucose residues

• the two β-CD molecules interact with aescin at one of the glucose fragments to form a complex stabilised by an extensive network of hydrogen bonds. Inclusion of aescin into γ-CD is favoured by the larger diameter of its cavity, where aescin fits more adequately. This results in the occurrence of