General Considerations. All reaction operations were performed under an anhydrous Ar atmosphere. Anhydrous toluene and tetrahydrofuran (THF) were distilled over Na and benzophenone. Dichloromethane was dried over CaH 2 . All chemicals were used as received without any further treatment. 1 H NMR and 13 C NMR spectra were recorded on Varian 600 NMR or Bruker 400 NMR spectrometers with tetramethylsilane (TMS) as an internal standard. High resolution ESI-MS were obtained on a Bruker APEX II FT-MS

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... ss spectrometer. DLS measurements were performed on a Brookhaven BI-200SM spectrometer. TEM images were performed with a FEI Tecnai F30 operating at 300 kV. UV-vis Absorption spectra were recorded by using a Shimadzu 2550 spectrophotometer. Luminescence measurements were made on a Hitachi F-7000 spectrofluorimeter with a xenon lamp as the excitation source. 4: 255 mg (0.50 mmol) of 3 1 was dissolved in acetone of 20 mL. 217 mg (0.50 mmol) cis-[Pt(DMSO) 2 Cl 2 ] 2 was added to the solution and the mixture was stirred in dark for 12 h at 20 o C. Evaporation of the yellow solution gave the pale yellow microcrystalline precipitate. After filtration, 0.25 g of yellow crystal was obtained by washing with acetone, ether and then drying in the air atmosphere at 20 °C.