Spatial variations of conductivity of self-assembled monolayers of dodecanethiol on Au/mica and Au/Si substrates

• Julian Skolaut,
• Jędrzej Tepper,
• Federica Galli,
• Wulf Wulfhekel and
• Jan M. van Ruitenbeek

Beilstein J. Nanotechnol. 2023, 14, 1169–1177, doi:10.3762/bjnano.14.97

• , including many studies performed recently on SAMs of helical oligopeptides studying chiral-induced spin-selectivity [12][13][14][15]. Here, we re-examine the information that is obtained from CAFM, and we demonstrate that the nature of the metallic substrate is of critical importance. The lateral variation

• /mica substrate. Additional measurements on SAMs of sulfur-bound oligopeptides (SH–(CH2)2NH–(Ala-Aib)5–COOH) [12] on Au/mica substrates yielded no measurable currents and are therefore omitted in this report. Our observations show that, when studying the conductive properties of DDT SAMs on Au/Si, the

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

• Yinglin Ma,
• Xiangyun Xiao and
• Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

• chiral molecules may allow for the separation of enantiomers such as oligopeptides. Y. Lu et al. investigated the enantiospecific interaction between a magnetized surface and a chiral amino acid by using electrochemical quartz crystal microbalance (EQCM) and Cys as a chiral model [146]. The

Chiral nanostructures self-assembled from nitrocinnamic amide amphiphiles: substituent and solvent effects

• Hejin Jiang,
• Huahua Fan,
• Yuqian Jiang,
• Li Zhang and
• Minghua Liu

Beilstein J. Nanotechnol. 2019, 10, 1608–1617, doi:10.3762/bjnano.10.156

• , amino acids [9][10][11], oligopeptides [12][13], saccharides [14][15][16], steroids [17][18] and diaminocyclohexane derivatives [19][20] have been reported to self-assemble into helical structures, mimicking the natural helical structures found in biological systems. Generally speaking, the common

Materials nanoarchitectonics at two-dimensional liquid interfaces

• Katsuhiko Ariga,
• Michio Matsumoto,
• Taizo Mori and
• Lok Kumar Shrestha

Beilstein J. Nanotechnol. 2019, 10, 1559–1587, doi:10.3762/bjnano.10.153

Strategy to discover full-length amyloid-beta peptide ligands using high-efficiency microarray technology

• Clelia Galati,
• Natalia Spinella,
• Lucio Renna,
• Danilo Milardi,
• Francesco Attanasio,
• Michele Francesco Maria Sciacca and
• Corrado Bongiorno

Beilstein J. Nanotechnol. 2017, 8, 2446–2453, doi:10.3762/bjnano.8.243

• peptide to be used at very low concentrations. By keeping the Aβ peptide below the critical concentration at which aggregations begin to occur [22][23], the study of the interaction between oligopeptides and Aβ peptide in monomeric form can be possible. In addition, due to the use of HESs, low

• neurodegenerative disorders can be evaluated. Prior to assay development, Aβ40 aggregation was evaluated by transmission electron microscopy (TEM) and binding conditions of the peptides under investigation were optimized on the coated silicon oxide surface. Finally, incubation tests between oligopeptides and

Early breast cancer screening using iron/iron oxide-based nanoplatforms with sub-femtomolar limits of detection

• Dinusha N. Udukala,
• Hongwang Wang,
• Sebastian O. Wendel,
• Aruni P. Malalasekera,
• Thilani N. Samarakoon,
• Asanka S. Yapa,
• Gayani Abayaweera,
• Matthew T. Basel,
• Pamela Maynez,
• Raquel Ortega,
• Yubisela Toledo,
• Leonie Bossmann,
• Colette Robinson,
• Katharine E. Janik,
• Olga B. Koper,
• Ping Li,
• Massoud Motamedi,
• Daniel A. Higgins,
• Gary Gadbury,
• Gaohong Zhu,
• Deryl L. Troyer and
• Stefan H. Bossmann

Beilstein J. Nanotechnol. 2016, 7, 364–373, doi:10.3762/bjnano.7.33

• characterization of the nanoplatforms for protease detection is described in detail in [19]. In short, water-dispersible Fe/Fe3O4 nanoparticles featuring dopamine ligands [47], TCPP [48], and cyanine 5.5 [49] were synthesized according to established procedures. The oligopeptides used as consensus sequences, which

• were synthesized in the Bossmann group by means of solid-supported peptide synthesis [20], are summarized in Table 1. TCPP was connected to the N-terminal end of the oligopeptides while it was still on the resin. The TCPP-oligopeptide was then cleaved off the resin and linked to the primary amine

Biopolymer colloids for controlling and templating inorganic synthesis

• Laura C. Preiss,
• Katharina Landfester and
• Rafael Muñoz-Espí

Beilstein J. Nanotechnol. 2014, 5, 2129–2138, doi:10.3762/bjnano.5.222

• , biopolymers have also been used as controlling agents or additives in the precipitation/crystallization of other inorganic systems, such as ZnO [34], metal particles [13], silica [35], or Fe2O3 [15]. To investigate the effects of proteins in mineralization, synthetic oligopeptides with sequences of defined

• to the surface of colloidal particles. In this sense, Krattiger et al. [44] reported the morphogenesis of CaCO3 and DL-alanine crystals in the presence of polystyrene beads functionalized with synthetic peptides with different amino acids and oligopeptides. B. Biopolymers as “supports” B1. Molecular

Self-organizing bioinspired oligothiophene–oligopeptide hybrids

• Alexey K. Shaytan,
• Eva-Kathrin Schillinger,
• Elena Mena-Osteritz,
• Sylvia Schmid,
• Pavel G. Khalatur,
• Peter Bäuerle and
• Alexei R. Khokhlov

Beilstein J. Nanotechnol. 2011, 2, 525–544, doi:10.3762/bjnano.2.57

• effort to reveal the structure of the fibrils at the nanoscale. Based on the combined theoretical and experimental analysis, the most likely models of fibril formation and aggregation are suggested. Keywords: amyloid-like fibrils; bioinspired conjugates; molecular dynamics simulations; oligopeptides

• ; oligothiophenes; self-assembly; Introduction Amyloid and amyloid-like fibrillar aggregates, formed by natural proteins or oligopeptides, have attracted much attention both due to their involvement in medical pathologies (such as Alzheimer’s disease, Parkinson’s disease, etc. [1][2][3]) and their possible