- S1 - Synthesis and Characterization of Organometallic Coordination Polymer Nano- Shells of Prussian Blue using MiniEmulsion Periphery Polymerization (MEPP) Guodong Liang, Junting Xu and Xiaosong Wang* Department of Colour Science, School of Chemistry, University of Leeds, Leeds, UK LS2 9JT Experimental section Materials. Poly(ethylene glycol)-b-poly(propylene glycol)-b-poly(ethylene glycol) triblock copolymers (M n = 14,000g/mol, PDI = 1.10), 4-(dimethylamino)-pyridine, sodium pentacyanoaminoferrate, triethylenamine, bromoacetyl chloride, iron (III) chloride were purchased from Aldrich (United Kingdom) and used without further purification, unless otherwise indicated. Characterization. A transmission electron microscope (TEM) (JEOL-1200) with an acceleration voltage of 80 kV was used to examine particle morphologies. A field emission gun TEM microscope (Philips CM200 FEGTEM) equipped with an Oxford instruments UTW ISIS EDX system was used to carry out element mapping of the particle samples. Acceleration voltage is 200 kV. The sample was prepared by drying a drop of colloidal solution on a carbon-coated copper grid. The grid was then rinsed with distilled water to remove excess ferric ions. The specimens were directly observed without staining due to the presence of iron elements. SEM micrographs were obtained using LEO 1530 Gemini FEGSEM. The sample were mounted on freshly polished aluminum stoppers and rinsed with distilled water to remove excess Fe 3+ . The specimens were coated with a gold/platinum alloy thin film prior to observation. Tapping mode AFM to investigate 3-dimentional morphology of the particles was performed using a commercial atomic force microscopy (DI 3100 AFM, Digital Instruments) with a silicon micro-cantilever (spring constant 45 N/m and resonance frequency ~170 kHz). The scan rate was from 0.5 to 2.0 Hz to optimize the image quality. The set-point ratio, the ratio between the set-point amplitude and the free vibration amplitude, was chosen to be ~ 1. Dynamic light scattering (DLS) was performed at room temperature on a Brookheven’s light scattering system (BI-200SM Laser Light Scattering Goniometer) with a BI-APD detector using a He-Ne laser at