Orientation-dependent photonic bandgaps in gold-dust weevil scales and their titania bioreplicates

• Norma Salvadores Farran,
• Limin Wang,
• Primoz Pirih and
• Bodo D. Wilts

Beilstein J. Nanotechnol. 2025, 16, 1–10, doi:10.3762/bjnano.16.1

• }-oriented domains exhibits polarization conversion, rotating the angle of linearly polarized light. The overall coloration, resulting from the reflections from many scales, is close to uniformly diffuse because of the random orientation of the domains. Using titania sol–gel chemistry, we produced negative

• exposed photonic crystals using a sol–gel chemistry approach [14][24]. The increased refractive index contrast and the increased fill fraction of the replicas resulted in a redshift, which was confirmed with full-wave modeling. Full-wave modeling further suggested that the titania replicated from a 3D

• weevils is quite good at reducing the specular surface reflections, especially when compared with multilayered cuticles [21]. We employed biotemplating to create negative replicas of weevil scales using well-established titania sol–gel chemistry [37]. These replicas, while maintaining the intricate

Nanoarchitectonics to entrap living cells in silica-based systems: encapsulations with yolk–shell and sepiolite nanomaterials

• Celia Martín-Morales,
• Jorge Fernández-Méndez,
• Pilar Aranda and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2023, 14, 522–534, doi:10.3762/bjnano.14.43

• protocol combining self-assembly of silica nanoparticles and sol–gel chemistry has been developed here. It allows one to fine-tune the nanoarchitecture, leading to novel silica-based biohybrid systems that are able to retain the biological activity of the encapsulated cells while providing protection from

Advanced hybrid nanomaterials

• Andreas Taubert,
• Fabrice Leroux,
• Pierre Rabu and
• Verónica de Zea Bermudez

Beilstein J. Nanotechnol. 2019, 10, 2563–2567, doi:10.3762/bjnano.10.247

• into a broad scientific and technological subject including important fields such as sol–gel chemistry [4][5], polymer nanocomposites [6][7], and hybrid nanomaterials [8][9]. Nowadays, hybrid materials are almost everywhere and provide a wide range of applications from biology and health, to photonic

Block copolymers for designing nanostructured porous coatings

• Roberto Nisticò

Beilstein J. Nanotechnol. 2018, 9, 2332–2344, doi:10.3762/bjnano.9.218

• concerning the principles behind sol–gel chemistry, please refer to [4]. In order to enhance the structural control in oxidic systems (and in particular by modulating the porosity organization), one possibility is to exploit the templating action of amphiphilic BC supramolecular structures working as

Controllable one-pot synthesis of uniform colloidal TiO₂ particles in a mixed solvent solution for photocatalysis

• Jong Tae Moon,
• Seung Ki Lee and
• Ji Bong Joo

Beilstein J. Nanotechnol. 2018, 9, 1715–1727, doi:10.3762/bjnano.9.163

• Abstract This study reports on the controllable synthesis of uniform colloidal titanium dioxide (TiO2) particles and their photocatalytic applications toward rhodamine B (RhB) degradation. The monodispersed TiO2 particles were synthesized under mixed solvent conditions by sol–gel chemistry in a one-pot

• colloidal particles with controllable properties and enhanced photocatalytic activity towards RhB degradation. The particle synthesis was conducted in mixed solvent conditions by sol–gel chemistry through a one-pot process followed by calcination. This study allowed for the systematic investigation of the

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

• additives in a simple, one-pot reaction system for a wide range of applications. Keywords: cyclodextrin; faceted particles; mesoporous silica nanoparticles (MSN); microporous; Introduction With the availability of several types of surfactants and the increased understanding of sol–gel chemistry, numerous

Preparation of thick silica coatings on carbon fibers with fine-structured silica nanotubes induced by a self-assembly process

• Benjamin Baumgärtner,
• Hendrik Möller,
• Thomas Neumann and
• Dirk Volkmer

Beilstein J. Nanotechnol. 2017, 8, 1145–1155, doi:10.3762/bjnano.8.116

• on the surface of carbon fibers and a subsequent silicification on the basis of sol–gel chemistry. In the first approach, a covalent linkage of the short-chain polyamine tetraethylenepentamine to carbon fibers via amide functional groups was achieved. Owing to the small size of the TEPA molecule, the

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

• not reactive enough, or they contain irremovable water, which leads to an undesired reaction of the heterocubane precursor to ZnO via sol–gel chemistry [66][67]. Elemental fluorine and anhydrous HF have not been tested yet, because of security issues handling these compounds. Materials synthesis and

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

• monolayers fabricated through sol–gel chemistry were used to grow isolated particles of Prussian blue analogues (PBA). The elaboration of the TiO2/CoFe PBA nanocomposites involves five steps. The samples were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), infrared

• to sol–gel chemistry combined with organic templating agents. Coordination chemistry allowing for the controlled assembly of a large variety of transition metal building units is preferred to build the functional compound. Prussian blue analogs (PBAs) are interesting for the design of bistable

Template-directed synthesis and characterization of microstructured ceramic Ce/ZrO₂@SiO₂ composite tubes

• Jörg J. Schneider and
• Meike Naumann

Beilstein J. Nanotechnol. 2014, 5, 1152–1159, doi:10.3762/bjnano.5.126

• the surface of the silica host structure and determination of the O, Zr and Ce elemental distribution with nm precision. Keywords: electrospinning; exotemplating; nanostructured solid solution; sol–gel chemistry; Stoeber process; ternary oxide; Introduction Ceria, CeO2, is well-known for its unique

Inorganic–organic hybrid materials through post-synthesis modification: Impact of the treatment with azides on the mesopore structure

• Miriam Keppeler,
• Jürgen Holzbock,
• Johanna Akbarzadeh,
• Herwig Peterlik and
• Nicola Hüsing

Beilstein J. Nanotechnol. 2011, 2, 486–498, doi:10.3762/bjnano.2.52

• solvent (N,N-dimethylformamide, 1,1,3,3-tetramethylurea, 1,3-dimethyl-2-imidazolidinone) or a protic solvent that can form hydrogen bonds, such as water, was used. Keywords: inorganic–organic hybrid materials; mesoporous materials; nucleophilic substitution; silica; sol–gel chemistry; Introduction