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Coherent coupling between plasmons and transition dipole moments in emitters can lead to two distinct spectral effects: vacuum Rabi splitting at strong strengths, induced transparency (also known as Fano interference) intermediate strengths. Achieving either or a single emitter localized plasmon resonance has the potential enable single-photon nonlinearities other extreme light-matter interactions, room temperature on nanometer scale. Both effects produce peaks spectrum of scattering from...

Measurement of the redox potentials (E 1/2 ) ferrocene (1), decamethylferrocene (2), decamethylcobaltocene (3), and [Fe I Cp*(η 6 -C Me )] (4) (Cp* = η 5 in DMF, CH 3 CN, THF, DME, 2 Cl , DMSO were recorded vs. saturated calomel electrode (SCE), showing that E value 1 was more solvent dependent than those 2–4, difference values among 2–4 independent, unlike found between 2–4. This shows are much reliable internal references for determining 1, but using data from this article, one can convert...

This study concerns the self-assembly of virus-like particles (VLPs) composed an icosahedral virus protein coat encapsulating a functionalized spherical nanoparticle core. The recent development efficient methods for VLP has opened way to structural studies. Using electron microscopy with image reconstruction, structures several VLPs obtained from brome mosaic capsid proteins and gold nanoparticles were elucidated. Varying core diameter provides control over structure. number subunits...

Molecule-based solids represent a rare opportunity to combine, adjust, and interrelate structural physical functionalities develop multifunctional materials. Here we report on series of porous supramolecular magnets whose magnetic properties are related their sorption state. A family the formula [{Mn(HL)(H2O)}2Mn{Mo(CN)7}2]·2H2O have been obtained by assembling heptacyano-metalate building unit {Mo(CN)7}4- with Mn(II) in presence protonated N,N-dimethylalaninol (L) as ligand, latter being...

Tri- and nonaferrocenyl thiol dendrons have been synthesized used to assemble dendronized gold nanoparticles either by the ligand-substitution method from dodecanethiolate−gold (AB3 units) or Brust-type direct synthesis a 1:1 mixture of dodecanethiol (AB9 units). The colloids are new type dendrimers with colloidal core. Two containing nonasilylferrocenyl dendron made; they bear respectively 180 360 ferrocenyl units at periphery. These selectively recognize anions H2PO4-...

Self-assembly of regular protein surfaces around nanoparticle templates provides a new class hybrid biomaterials with potential applications in medical imaging and bioanalytical sensing. We report here the first example efficiently self-assembled virus-like particles (VLPs) having brome mosaic virus coat functionalized gold core. The present study indicates that can initiate VLP assembly by mimicking electrostatic behavior nucleic acid component native virus. These constructs are symmetric,...

Incorporation of CdSe/ZnS semiconductor quantum dots (QDs) into viral particles provides a new paradigm for the design intracellular microscopic probes and vectors. Several strategies incorporation QDs capsids were explored; those functionalized with poly(ethylene glycol) (PEG) can be self-assembled minimal release photoreaction products enhanced stability against prolonged irradiation.

Dendrimers, alkylthiol-gold nanoparticles and gold-nanoparticle-cored dendrimers containing tethers terminated by a redox group (typically an iron sandwich) attached to hydrogen-bonding (amido, amino, silyl) are selective efficient exo-receptors for the recognition, sensing titration of oxo-anions, including ATP(2-), or halogens, mostly using cyclic voltammetry. Various positive dendritic effects were disclosed (in contrast catalysis), large this type that contain several hundred equivalent...

The Turkevich–Frens synthesis starting conditions are expanded, ranging the gold salt concentrations up to 2 mM and citrate/gold(III) molar ratios 18:1. For each concentration of initial solution, systematically varied from 2:1 18:1 both size distribution resulting nanoparticles compared. This study reveals a different nanoparticle evolution for solutions below 0.8 compared case above mM. In [Au3+] < mM, vary substantially with ratio, displaying plateaux that evolve inversely at larger...

Self-assembling icosahedral protein cages have potencially useful physical and chemical characteristics for a variety of nanotechnology applications, ranging from therapeutic or diagnostic vectors to building blocks hierarchical materials. For application-specific functional control cage assemblies, deeper understanding the interaction between its payload is necessary. Protein-cage encapsulated nanoparticles, with their well-defined surface chemistry, allow systematic over key parameters...

Lisinopril was used as the targeting moiety to prepare gold nanoparticle-based functional CT contrast agents. Pure lisinopril, thioctic acid–lisinopril conjugate, and reduced conjugate were obtain GNP-Lis, GNP-TA-Lis, GNP-RTA-Lis, respectively, via ligand exchange reaction on citrate-coated nanoparticles (GNPs). These lisinopril-decorated GNPs fully characterized, their chemical stabilities in biological relevant media high salt concentration compared. Their relative toward lyophilization...

The DSM polyamine dendrimers dend-DAB-(NH2)x of generations 1 (x = 4) to 4 32) form H-bonded dendritic assemblies with the phenol AB3 units p-HOC6H4C(CH2CHCH2)3 and p-HOC6H4C{(CH2)3SiCH2NHCOFc}3 (Fc ferrocenyl), as shown by shifts NH2 OH signals giving a concentration-dependent common signal between 2.4 4.1 ppm in CDCl3. supramolecular efficiently recognize H2PO4- anions positive unusual effects upon electrochemical titration involving half-stoichiometry for G1, sudden cyclovoltammetry wave...

Abstract A family of five metallodendrimers with pentamethylamidoferrocenyl termini were synthesized from the DSM dendrimers G n ‐DAB‐dend‐(NH 2 ) x ( =4, 8, 16, 32, 64) and characterized by standard techniques, including prominent molecular peaks (broad for =64) in their MALDI‐TOF mass spectra. Oxidation 4 ‐DAB‐dend‐(NHCOFc*) (Fc*=C 5 H FeCp*, Cp*= η ‐C Me SbCl CH Cl yields stable 17‐electron pentamethylferrocenium analogue, which can be ESR Mössbauer spectroscopy reduced back to initial Fe...

Gold nanoparticles have been functionalized with thiol dendrons containing three redox active amidoferrocenyl or silylferrocenyl units; using cyclic voltammetry, these dendronized gold recognize H2PO4-.

Two poly(propyleneimine) dendrons (PPI dendrons) of third generation, containing eight branches (nitriles or primary amines) and having tyramine as the focal point, were prepared. A tetraethylene glycol spacer (TEG), terminated by a protected thiol group, was attached to their points. The obtained TEG–PPI successfully used cap 18 nm spherical gold nanoparticles, with no need for intermediate thioctic acid exchange citrate, previously reported non-anionic ligands. novel nanoparticle-cored PPI...

Characterizing biomolecular interactions is crucial to the understanding of biological processes. Existing characterization methods have low spatial resolution, poor specificity, and some lack capability for deep tissue imaging. We describe a novel technique that relies on small-angle X-ray scattering signatures from high-contrast molecular probes correlate with presence interactions. proof-of-concept study uses model system consisting mixtures monomer solutions gold nanoparticles (GNPs) as...

Abstract The assembly of inorganic nanoparticles often leads to collective properties that are different from the combined individual components. In particular, coupling plasmonic and excitonic has been shown modify their optical properties, including absorption, emission, scattering. Because this, these coupled assemblies have potential applications in a wide range areas, sensing, light harvesting, photocatalysis. More recently, unique Fano interference Rabi splitting, observed by...

Cysteamine has a concentration-dependent dual-role of ligand and etchant which leads to controlled etching/tapering gold nanorods with silica coating.