Blue and white light emission from zinc oxide nanoforests

• Nafisa Noor,
• Luca Lucera,
• Thomas Capuano,
• Venkata Manthina,
• Alexander G. Agrios,
• Helena Silva and
• Ali Gokirmak

Beilstein J. Nanotechnol. 2015, 6, 2463–2469, doi:10.3762/bjnano.6.255

• after a DC test showing evidence of melting and recrystallization of the material under electrical stress. Optical microscope images showing two tungsten probes placed on a continuous ZnO nanoforest before (left) and after (right) a DC measurement test. The melting of the micrometer-sized probe tips

A single-source precursor route to anisotropic halogen-doped zinc oxide particles as a promising candidate for new transparent conducting oxide materials

• Daniela Lehr,
• Markus R. Wagner,
• Johanna Flock,
• Julian S. Reparaz,
• Clivia M. Sotomayor Torres,
• Alexander Klaiber,
• Thomas Dekorsy and
• Sebastian Polarz

Beilstein J. Nanotechnol. 2015, 6, 2161–2172, doi:10.3762/bjnano.6.222

• leads to a mixture of the starting compound 1, containing the monosubstituted product [I(CH3)3Zn4(OiPr)4] (2a) (55%) and the twofold-substituted product [I2(CH3)3Zn4(OiPr)4] (3a) (10%) (Figure 1a). Purification via recrystallization for several times is able to remove substantial parts of the starting

Transformation of hydrogen titanate nanoribbons to TiO₂ nanoribbons and the influence of the transformation strategies on the photocatalytic performance

• Melita Rutar,
• Nejc Rozman,
• Matej Pregelj,
• Carla Bittencourt,
• Romana Cerc Korošec,
• Andrijana Sever Škapin,
• Aleš Mrzel,
• Srečo D. Škapin and
• Polona Umek

Beilstein J. Nanotechnol. 2015, 6, 831–844, doi:10.3762/bjnano.6.86

• formed through a dissolution–recrystallization process, as suggested by Zhu et al. [14]. The shape of these crystallites strongly depends on the pH of the reaction medium since different ions act as capping agents [31]. Published results [14][20][21] suggest that the stability of HTiNRs in aqueous

Nanoporous Ge thin film production combining Ge sputtering and dopant implantation

• Jacques Perrin Toinin,
• Alain Portavoce,
• Khalid Hoummada,
• Michaël Texier,
• Maxime Bertoglio,
• Sandrine Bernardini,
• Marco Abbarchi and
• Lee Chow

Beilstein J. Nanotechnol. 2015, 6, 336–342, doi:10.3762/bjnano.6.32

• Discussion 340 nm thick Ge layers were deposited on the native oxide layer of a silicon substrate at room temperature (RT), under high vacuum, by magnetron sputtering. Recrystallization was then performed by rapid thermal annealing at 600 °C under vacuum (P ≈ 3 × 10−5 mbar) and the Ge layer was implanted

Synthesis and characterization of fluorescence-labelled silica core-shell and noble metal-decorated ceria nanoparticles

• Rudolf Herrmann,
• Markus Rennhak and
• Armin Reller

Beilstein J. Nanotechnol. 2014, 5, 2413–2423, doi:10.3762/bjnano.5.251

• months. We observed the formation of super-agglomerates, together with wires and sheets of crystalline CeO2 in the micrometer range, obviously formed by recrystallization, but not in all samples. The presence of traces of water in the solvent may be the reason for this instability; a related observation

• probably are part of the recrystallization process, since this behaviour has not been observed for pure CeO2 NP and agglomerates. Attempts to stabilize the decorated NP by annealing at 400 °C were only partially successful. Increased agglomeration of the ceria part was observed in some cases, but even more

Influence of stabilising agents and pH on the size of SnO₂ nanoparticles

• Olga Rac,
• Patrycja Suchorska-Woźniak,
• Marta Fiedot and
• Helena Teterycz

Beilstein J. Nanotechnol. 2014, 5, 2192–2201, doi:10.3762/bjnano.5.228

• recrystallization. However, nano-sized dimensions are still observed after heating the sample to 450 °C. The influence of surfactant on the average nanoparticle diameter In the first stage of the study, the use of two stabilising agents, namely, both a polymer (PEI) as well as a surfactant (Triton X-100) was

Towards bottom-up nanopatterning of Prussian blue analogues

• Virgile Trannoy,
• Marco Faustini,
• David Grosso,
• Sandra Mazerat,
• François Brisset,
• Alexandre Dazzi and
• Anne Bleuzen

Beilstein J. Nanotechnol. 2014, 5, 1933–1943, doi:10.3762/bjnano.5.204

• –recrystallization phenomena during the PBA growth step: during the successive immersions of the functionalized film, the particles or a few of the particles formed during the first cycles can dissolve and the released precursors reform new particles. The size of the PBA particles ranges from 20 to 100 nm. The size

• in half-spherical particles of 16 nm in diameter. The formation of particles of bigger size can be explained by the occurrence of dissolution–recrystallization phenomena. Effect of the chemical nature of the anchoring function for PBA: The TiO2/CoFe PBA nanocomposites NC02 synthesized by using 4-MPy

• shape is systematically obtained when the reaction medium is BuOH or the 1:1 mixture EtOH/H2O whereas the half-spherical or spherical shape is obtained in aqueous solutions. PBA particles are less soluble in BuOH and in the EtOH/H2O mixture than in H2O and therefore the dissolution–recrystallization

An insight into the mechanism of charge-transfer of hybrid polymer:ternary/quaternary chalcopyrite colloidal nanocrystals

• Parul Chawla,
• Son Singh and
• Shailesh Narain Sharma

Beilstein J. Nanotechnol. 2014, 5, 1235–1244, doi:10.3762/bjnano.5.137

• recrystallization. The quaternary chalcopyrites, particularly CZTSe nanocrystals, facilitate an increased crystallinity and thus an increased local order, which provides better steric stability against coagulation, homogeneity and photostability to their respective polymer (P3HT):CZTS composites. The TOPO/TOP

Dimer/tetramer motifs determine amphiphilic hydrazine fibril structures on graphite

• Loji K. Thomas,
• Nadine Diek,
• Uwe Beginn and
• Michael Reichling

Beilstein J. Nanotechnol. 2012, 3, 658–666, doi:10.3762/bjnano.3.75

• under a nitrogen atmosphere. The reaction mixture was filtered hot and concentrated on a rotary evaporator. After recrystallization from 600 mL MeOH/EtOH (2/1), a white wax-like solid was obtained. Yield: 24.3 g (83%); mp 45 °C (lit.: 44–45 °C); 1H NMR (CDCl3) δ 0.916 (t, 3H, -CH3), 1.337 (m, 12H, -CH2

• added and heated under reflux at 180 °C for 6 h; the mixture was poured into 200 mL cold MeOH and filtered. The precipitate was washed two times with 50 mL cold MeOH. Afterwards recrystallization in MeOH, 5.3 g (53%) of a white solid was obtained. IR ν: 3319, 3221, 3168, 3066, 3022, 2957, 2920, 2872

• 16.0284 g (72.468 mmol) 1-bromooctane, 13.658 g (98.82 mmol) potassium carbonate and 0.2 g potassium iodide were added and heated under reflux for 5 h under a nitrogen atmosphere. The reaction mixture was filtered hot and concentrated on a rotary evaporator. After recrystallization from 200 mL MeOH/EtOH

The oriented and patterned growth of fluorescent metal–organic frameworks onto functionalized surfaces

• Jinliang Zhuang,
• Jasmin Friedel and
• Andreas Terfort

Beilstein J. Nanotechnol. 2012, 3, 570–578, doi:10.3762/bjnano.3.66

• ), the aqueous phase was separated. Diluted sulfuric acid (H2SO4, 3%, 40 mL) was added and an immediate precipitation of yellow crystals was observed. The crude product was collected by filtration and washed with cold water, and then dried overnight in an oven. Recrystallization in diluted ethanol (10

A facile approach to nanoarchitectured three-dimensional graphene-based Li–Mn–O composite as high-power cathodes for Li-ion batteries

• Wenyu Zhang,
• Yi Zeng,
• Chen Xu,
• Ni Xiao,
• Yiben Gao,
• Lain-Jong Li,
• Xiaodong Chen,
• Huey Hoon Hng and
• Qingyu Yan

Beilstein J. Nanotechnol. 2012, 3, 513–523, doi:10.3762/bjnano.3.59

• diffraction peaks using Scherrer’s equation. This grain size is much smaller than that of Mn2O3, which is possibly due to a recrystallization process. No impurity phase is detectable using XRD. After the lithiation process, the TGA results (see Supporting Information File 1, Figure S2b) indicate that the

An NC-AFM and KPFM study of the adsorption of a triphenylene derivative on KBr(001)

• Antoine Hinaut,
• Adeline Pujol,
• Florian Chaumeton,
• David Martrou,
• André Gourdon and
• Sébastien Gauthier

Beilstein J. Nanotechnol. 2012, 3, 221–229, doi:10.3762/bjnano.3.25

• under argon was added HHTP (200 mg, 0.62 mmol). The mixture was then stirred under argon at RT for 55 h and then poured into water (150 mL) under stirring. Neutralization by H2SO4 (5 M) gave a beige precipitate, which was filtered and dried under vacuum. Recrystallization from ethyl acetate (300 mL) or

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

• desilication treatment. A few studies on detitanation [69][70] and deboronation [71][72] have also been reported. Recrystallization: Recrystallization is a typical top-down approach since it starts from a full-grown zeolite or a purely mesoporous structure, which is then impregnated by either a mesotemplate

• altered by changing the reaction conditions. In general, recrystallization will give rise to composite zeolitic/mesoporous materials rather than true hierarchical materials [50]. In the case of recrystallization of a mesoporous material, it is important to start from a structure with thick walls (such as

• SBA-15) or to fill the mesopores with a support material (such as the mesotemplate [77]) in order to prevent a collapse of the mesopores during zeolitization. An example of a combined zeolitic/mesoporous material synthesized by the recrystallization route is UL-TS-1, which is formed by heating TPAOH

Recrystallization of tubules from natural lotus (Nelumbo nucifera) wax on a Au(111) surface

• Sujit Kumar Dora and
• Klaus Wandelt

Beilstein J. Nanotechnol. 2011, 2, 261–267, doi:10.3762/bjnano.2.30

• glass, mica, and HOPG, we also observed on a Au(111) surface the recrystallization of tubular structures after application of a solution of natural lotus wax in chloroform. AFM images showed that most of the tubules with a polar orientation parallel to the surface reached their final length after

• pixels. In order to minimize interaction between tip and sample, the set point was chosen close to the upper limit. All experiments were performed at room temperature (20–24 °C). For real time observations of wax recrystallization by AFM, a 10 µL droplet of wax molecules dissolved in chloroform was

• . Supporting Information Supporting Information File 11: Natural nonacosan-10-ol wax crystallization on Au(111) surface. Supporting Information File 12: Parallel orientation of 3-dimensional structures of octacosan-1-ol on HOPG by recrystallization from chloroform solution. Acknowledgements The authors are

Biomimetics inspired surfaces for drag reduction and oleophobicity/philicity

• Bharat Bhushan

Beilstein J. Nanotechnol. 2011, 2, 66–84, doi:10.3762/bjnano.2.9

• substrates following the procedure described earlier in this section. Hydrophilic surface was produced without any recrystallization (rather flat surface) whereas to produce a superhydrophobic surface, the wax was recrystallized to produce a tubular nanostructure [13]. The data presented in Table 2 shows

Structure, morphology, and magnetic properties of Fe nanoparticles deposited onto single-crystalline surfaces

• Armin Kleibert,
• Wolfgang Rosellen,
• Mathias Getzlaff and
• Joachim Bansmann

Beilstein J. Nanotechnol. 2011, 2, 47–56, doi:10.3762/bjnano.2.6

• particular, it turns out that upon impact the particles are temporarily disordered. The subsequent recrystallization happens on a ps time scale and may result in partial or full epitaxy of the particles. Thereby, the alignment with the substrate is achieved by a thermally activated ejection of dislocations