Confined cooperative self-assembly and synthesis of optically and electrically active nanostructures : final LDRD report

[摘要] In this project, we developed a confined cooperative self-assembly process to synthesize one-dimensional (1D) j-aggregates including nanowires and nanorods with controlled diameters and aspect ratios. The facile and versatile aqueous solution process assimilates photo-active macrocyclic building blocks inside surfactant micelles, forming stable single-crystalline high surface area nanoporous frameworks with well-defined external morphology defined by the building block packing. Characterizations using TEM, SEM, XRD, N{sub 2} and NO sorption isotherms, TGA, UV-vis spectroscopy, and fluorescence imaging and spectroscopy indicate that the j-aggregate nanostructures are monodisperse and may further assemble into hierarchical arrays with multi-modal functional pores. The nanostructures exhibit enhanced and collective optical properties over the individual chromophores. This project was a small footprint research effort which, nonetheless, produced significant progress towards both the stated goal as well as unanticipated research directions.

[发布日期] 2011-10-01

[学科分类] 纳米科学和纳米技术

[关键词] AQUEOUS SOLUTIONS;ASPECT RATIO;FLUORESCENCE;FUNCTIONALS;ISOTHERMS;MORPHOLOGY;NANOSTRUCTURES;OPTICAL PROPERTIES;SORPTION;SPECTROSCOPY;SURFACE AREA;SURFACTANTS;SYNTHESIS;X-RAY DIFFRACTION