Frank C. Peiris

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We report a bottom-up synthesis of a photochemically and thermally active azobenzene-based polyelectrolyte multilayer (PEM) planar defect embedded in a colloidal photonic crystal (CPC). Both photoisomerization and thermal cycling lead to a precise tuning of an intragap transmitting state induced by the PEM structural defect.
IO N We describe herein the fi rst example of an electrochromic Bragg mirror (ECBM), combining nanoporous multilayers made of NiO and WO 3 nanoparticles. Because NiO and WO 3 are complementary in their coloration effects (e.g. cathodic coloration for WO 3 and anodic coloration for NiO) [ 1 ] and their corresponding change in refractive index, tunability can(More)
Facile synthetic routes have been developed that provide access to cationic and anionic water-soluble polyferrocenylsilane (PFS) polyelectrolytes with controlled molecular weight and narrow polydispersity. Living photolytic ring-opening polymerization of amino-functionalized [1]ferrocenophane (fc) monomers [fcSiMe{C[triple chemical(More)
The mechanical properties of colloidal nanocrystal superlattices can be tailored through exposure to low-pressure plasma. The elastic modulus and hardness of the ligand-free 3.7 nm ZrO2 superlattice are found to be similar to bulk yttria-stabilized tetragonal polycrystals of the same relative density but without any doping.
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