Facile synthesis of morphology- and size-controllable polythiophene/gold composites in aqueous medium
Source abstract
Abstract
Polythiophene (PTh) nanomaterials and polythiophene/gold (PTh-Au) composites were successfully fabricated using chloroaurate acid (HAuCl4) as an oxidant in aqueous medium without using any templates or structure-directing agents. With increasing thiophene (Th) concentration from 0.5 to 50 mM at a fixed molar ratio of thiophene and HAuCl4 of 3:1, Au@PTh core–shell nanoparticles (~36 nm in diameter) and fibers, AuNPs-modified PTh nanospheres (~270 nm in diameter), flower-like gold microparticles, and gold microsheets were obtained. At a fixed thiophene concentration of 5.0 or 50 mM, the molar ratio of thiophene/HAuCl4 also affected the morphology and size of PTh–Au composites. The morphology of obtained nanostructures was determined by scanning electron microscope and transmission electron microscope. Furthermore, characterization experiments including FT-IR, UV–Vis spectrometry, energy-dispersive X-ray spectroscopy, and selected-area electron diffraction were utilized to investigate the chemical and electronic structures of PTh nanostructures and PTh–Au composites. The photoluminescent (PL) properties of PTh–Au composites have also been investigated to clarify the effectiveness of the morphology and composition of composites on the PL emission peaks. In addition, the formation mechanism of PTh nanostructures and PTh–Au composites is also proposed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Conducting polymers and applications · Organic Electronics and Photovoltaics · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
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