A Novel Approach to the Facile Growth and Organization of Photothermal Prussian Blue Nanocrystals on Different Surfaces.

Jean-Marie Devoisselle,Yannick Guari,Joël Chopineau,Pierre-Emmanuel Milhiet,Joulia Larionova,Gautier Félix,Giang Ngo,Luca Costa,Christophe Dorandeu

doi:10.3390/nano11071749

Abstract

We report here a novel “one-pot” approach for the controlled growth and organization of Prussian blue nanostructures on three different surfaces: pure Au0, cysteamine-functionalized Au0, and SiO2-supported lipid bilayers with different natures of lipids. We demonstrate that fine control over the size, morphology, and the degree and homogeneity of the surface coverage by Prussian Blue (PB) nanostructures may be achieved by manipulating different parameters, which are the precursor concentration, the nature of the functional groups or the nature of lipids on the surfaces. This allows the growth of isolated PB nanopyramids and nanocubes or the design of thin dense films over centimeter square surfaces. The formation of unusual Prussian blue nanopyramids is discussed. Finally, we demonstrate, by using experimental techniques and theoretical modeling, that PB nanoparticles deposited on the gold surface exhibit strong photothermal properties, permitting a rapid temperature increase up to 90 °C with a conversion of the laser power of almost 50% for power source heat.

Highlights

Nanomaterials 2021, 11, 1749 use of reverse micellar systems for the synthesis and stabilization of cubic nanoparticles of Cu3[Fe(CN)6]2-PBA and PB itself
The stirring rate, temperature, and time of the ay be achieved by manipulatinBgludeif(fPerBe)nntapnaorsatmruectteurrse, swmhiacyhbaereacthheiepvreed- by manipulating different parameters, which are the preature of the fuNnancotmioantearilaglsr2o0u21p,s11oc,ruxtrFhsOoerRncPaoEtunEcrReRnoEtfrVlaiItpEiWoidns, othnetnhaetsuurrefaocfetsh.eTfhuinsctional groups or the nature of lipids on the surfaces
We have demonstrated that this process leads to the formation of well-defined isolated PB nanopyramids epitaxially grown on the bare Au surfaces

Summary

Introduction

Nanomaterials 2021, 11, 1749 use of reverse micellar systems for the synthesis and stabilization of cubic nanoparticles of Cu3[Fe(CN)6]2-PBA and PB itself. The SLB can be obtained on various supports, such as silica, gold, titanium or polymer cushions using a variety of top-down approaches They offer the possibility to have soft interfaces with interesting physico–chemical properties and the possibility to modulate the surface charge by using different lipids or their mixture [41,50,51] and are usually used as model membrane systems for the reconstitution/interactions of proteins and for the studies of nanoparticle interactions with membranes [50,52]. We took advantage of these different potentialities and investigate the in-situ growth of PB nano-objects on gold and SLB surfaces, demonstrating for the first time the possibility of direct nanoparticles growth on the latter

Methods

Results

Conclusion