Stripy Nanoparticles Revisited

Cesbron, Yann; Shaw, Christopher P.; Birchall, James P.; Free, Paul; Lévy, Raphaël

doi:10.1002/smll.201001465

Cited by 48 publications

(106 citation statements)

References 33 publications

(43 reference statements)

Supporting

Mentioning

103

Contrasting

Order By: Relevance

“…Particularly promising are mixed shells of donor and acceptor ligands, and the possibility offered by the control of the spatial organization of the ligand shell, as was recently reported for Janus nanoparticles [36][37][38][39] and stripes [41][42][43] . Figure 10: Computed energy of the lowest optical transition as a function of the partial charge on the gold core for different families of clusters: blue and red points refer to the phosphine-chlorine capped Au13 clusters of section 3, green points correspond to the family of neutral Au13 clusters discusses in section 4, points in magenta represent the Au25 clusters of section 5 (partial charge is for the Au13 inner core) and the black points refer to the Au28 clusters of section 6 (partial charge is for the Au14 inner core, the phosphine protected cluster is not included).…”

Section: Discussionmentioning

confidence: 95%

Charge Redistribution Effects on the UV–Vis Spectra of Small Ligated Gold Clusters: a Computational Study

et al. 2015

View full text Add to dashboard Cite

We analyze and compare the UV-Visible absorption profiles, computed at the TD-DFT level, of several thiolate, chloride and phosphine ligand protected gold clusters with Au 13 , Au 25 and Au 28 metallic cores. We show by investigating several model clusters and experimentally reported ones that the charge redistribution between the gold core and the ligand shell can be controlled by the electron acceptor or electron donor character of the ligands and their spatial distribution around the metallic core. A correlation between the increase of electronic charge in the gold core and a shift of the optical absorption band toward lower transition energies is highlighted. The identified correlation between the partial charge on the metallic gold core and the position of the lowest electronic transition is robust and remains valid even for small clusters with little structural or electronic similarity.

show abstract

Section: Discussionmentioning

confidence: 95%

Charge Redistribution Effects on the UV–Vis Spectra of Small Ligated Gold Clusters: a Computational Study

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Based on the entropy‐driven principle, AuNPs coated with two types of immiscible thiolated ligands of different chain lengths were synthesized for a range of novel applications, such as membrane penetration, ion sensing, and antifouling . However, experimental evidences for the existence of striped patterns on NPs have been questioned lately, partly because of the limitations of the adopted experimental methodologies. Therefore, we proposed to re‐examine the entropy‐driven principle for the generation of striped NPs due to the vast potential applications at stake.…”

Section: Introductionmentioning

confidence: 99%

A Thermodynamics Model for the Emergence of a Stripe‐like Binary SAM on a Nanoparticle Surface

Davis

et al. 2015

Small

View full text Add to dashboard Cite

It has been under debate if a self-assembled monolayer (SAM) with two immiscible ligands of different chain lengths and/or bulkiness can form a stripe-like pattern on a nanoparticle (NP) surface. The entropic gain upon such pattern formation due to difference in chain lengths and/or bulkiness has been proposed as the driving force in literature. Using atomistic discrete molecular dynamics simulations we show that stripe-like pattern could indeed emerge, but only for a subset of binary SAM systems. In addition to entropic contributions, the formation of a striped pattern also strongly depends upon inter-ligand interactions governed by the physicochemical properties of the ligand constituents. Due to the interplay between entropy and enthalpy, we can categorize a binary SAM system into three different types depending on whether and under what condition a striped pattern can emerge. We hope our results help clarify the ongoing debate and our proposed principle can aid in the engineering of novel binary SAMs on a NP surface.

show abstract

“…With improvements to synthetic methodologies it is becoming possible to create nanoparticles [68] and polymers with increasingly complex structures. Notwithstanding recent controversy over stripy nanoparticles [69,70], it is becoming apparent that it is possible to create patterned surfaces with features on the nanometre length scale [71,72]. These increasingly complex particles will exhibit interesting behaviour at interfaces, with potential applications that extend beyond simple emulsion stabilisers or as templates for the formation of nanostructured materials.…”

Section: Discussionmentioning

confidence: 99%

Complex Molecules at Liquid Interfaces: Insights from Molecular Simulation

Cheung

2014

Advances in Chemistry

View full text Add to dashboard Cite

The behaviour of complex molecules, such as nanoparticles, polymers, and proteins, at liquid interfaces is of increasing importance in a number of areas of science and technology. It has long been recognised that solid particles adhere to liquid interfaces, which provides a convenient method for the preparation of nanoparticle structures or to modify interfacial properties. The adhesion of proteins at liquid interfaces is important in many biological processes and in a number of materials applications of biomolecules. While the reduced dimensions of these particles make experimental investigation challenging, molecular simulations provide a natural means for the study of these systems. In this paper I will give an overview of some recent work using molecular simulation to investigate the behaviour of complex molecules at liquid interfaces, focusing on the relationship between interfacial adsorption and molecular structure, and outline some avenues for future research.

show abstract

Stripy Nanoparticles Revisited

Cited by 48 publications

References 33 publications

Charge Redistribution Effects on the UV–Vis Spectra of Small Ligated Gold Clusters: a Computational Study

Charge Redistribution Effects on the UV–Vis Spectra of Small Ligated Gold Clusters: a Computational Study

A Thermodynamics Model for the Emergence of a Stripe‐like Binary SAM on a Nanoparticle Surface

Complex Molecules at Liquid Interfaces: Insights from Molecular Simulation

Contact Info

Product

Resources

About