Template Synthesis of One-Dimensional Au, Au− Poly (Pyrrole), and Poly (Pyrrole) Nanoparticle Arrays (original) (raw)

Research involving metal and semiconductor nanoparticles is expanding rapidly into the assembly and characterization of well-ordered 2-and 3-dimensional (2D and 3D) superstructures. Recent advances in nanoparticle organization include the 3D CdSe supercrystals synthesized by Bawendi's group, 1 Mirkin and co-workers' 2D and 3D DNA-linked Au colloid arrays, 2 and the closest-packed surface-confined monolayers of Ag, Au, and CdS colloids studied by Natan, 3 Murray, 4 Cotton, 5 Kubiak, 6 Whetten, 7 and others. 8 These novel structures have revealed electronic and optical properties distinctly different from those of individual nanoparticles (that is, ensemble average measurements on well-spaced particles) or their macroscopic equivalents; practical applications are foreseeable in optical and electronic based chemical sensing, 2,8 nanoscale electronics, 8,9 and catalysis. 5 Despite their potential for fundamental studies on electron and energy transfer in nanoscopic solid-state materials and for applications involving single-electron devices, 8,9 few reports have appeared regarding the synthesis of coupled 1D nanoparticle systems. Notable Scheme 1. Synthetic Protocols for the Synthesis of Coupled 1D Nanoparticle Arrays: Procedures for (A) Ppy-linked Au Colloids and (B) Alkyldithiolate-Linked Au Colloids

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