Chemiresistive/SERS dual sensor based on densely packed gold nanoparticles

• Sanda Boca,
• Cosmin Leordean,
• Simion Astilean and
• Cosmin Farcau

Beilstein J. Nanotechnol. 2015, 6, 2498–2503, doi:10.3762/bjnano.6.259

• (C19H19N7O6) were purchased from Sigma-Aldrich. Gold interdigitated electrodes (IDE) were purchased from Dropsens. Gold nanoparticle synthesis and stabilization: Colloidal gold nanoparticles (AuNPs) were synthesized by the aqueous reduction of HAuCl4 with trisodium citrate. An amount of 100 mL of 10−3 M

Self-organization of gold nanoparticles on silanated surfaces

• Htet H. Kyaw,
• Salim H. Al-Harthi,
• Azzouz Sellai and
• Joydeep Dutta

Beilstein J. Nanotechnol. 2015, 6, 2345–2353, doi:10.3762/bjnano.6.242

• of Oman Functional Materials Division, School of Information and Communication Technology, KTH Royal Institute of Technology, Isafjordsgatan 22, SE-164 40 Kista Stockholm, Sweden 10.3762/bjnano.6.242 Abstract The self-organization of monolayer gold nanoparticles (AuNPs) on 3

• deposition of APTES molecules [7]. Thus, NH2-terminated APTES deposition on any substrate is extremely important for further surface modification. Gold nanoparticles (AuNPs) have unique physical, chemical and electrical properties that differ from the bulk due to the quantum confinement effects in small

• (DI) water (18.2 MΩ·cm) was used for preparation of solutions, synthesis and cleaning glass substrate. All the chemicals were used without further purification. Synthesis of gold nanoparticles (AuNPs). 2 mL of 5 mM HAuCl4·3H2O in 50 mL of DI water was boiled under constant stirring. Upon boiling, 2.8

Electrochemical behavior of polypyrrol/AuNP composites deposited by different electrochemical methods: sensing properties towards catechol

• Celia García-Hernández,
• Cristina García-Cabezón,
• Cristina Medina-Plaza,
• Fernando Martín-Pedrosa,
• Yolanda Blanco,
• José Antonio de Saja and
• María Luz Rodríguez-Méndez

Beilstein J. Nanotechnol. 2015, 6, 2052–2061, doi:10.3762/bjnano.6.209

• effects are not so pronounced on stainless steel, but acceptable LOD are attained with lower price sensors. Keywords: catechol; conducting polymers; electropolymerization; gold nanoparticles (AuNPs); polypyrrole; Introduction Polypyrrole (Ppy) is one of the most extensively studied, conducting polymers

• the appropriate selectivity, reproducibility and sensibility towards a particular application. Recently, composite nanomaterials based on conducting polymers and metal nanoparticles (NPs) of different metals have been developed. Gold nanoparticles (AuNPs) have attracted considerable interest because

Protein-coated pH-responsive gold nanoparticles: Microwave-assisted synthesis and surface charge-dependent anticancer activity

• Dickson Joseph,
• Nisha Tyagi,
• Christian Geckeler and
• Kurt E.Geckeler

Beilstein J. Nanotechnol. 2014, 5, 1452–1462, doi:10.3762/bjnano.5.158

• biomedicine. Eight different proteins were examined in the preparation of gold nanoparticles (AuNPs) in aqueous medium under microwave irradiation. Six of the proteins resulted in the formation of AuNPs. The intrinsic pH of the proteins played an important role in AuNPs with strong surface plasmon bands. The

Guided immobilisation of single gold nanoparticles by chemical electron beam lithography

• Patrick A. Schaal and
• Ulrich Simon

Beilstein J. Nanotechnol. 2013, 4, 336–344, doi:10.3762/bjnano.4.39

• interest. In this paper we present a straight-forward three-step procedure based on chemical electron beam lithography, which is capable of producing such arrays with gold nanoparticles (AuNPs). Preformed 6 nm AuNPs are immobilised on thiol patterns with a pitch of 100 nm by guided self-assembly