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- Title
Fullerenols Revisited: Highly Monodispersed Photoluminescent Nanomaterials as Ideal Building Blocks for Supramolecular Chemistry.
- Authors
Zhou, Shengju; Zhang, Linwen; Feng, Yongqiang; Li, Hongguang; Chen, Mengjun; Pan, Wei; Hao, Jingcheng
- Abstract
Fullerenols have been known for decades; however, the photoluminescent (PL) properties and applications in supramolecular chemistry of these molecules have not been well addressed. Herein, a strategy has been developed to purify the as‐prepared fullerenols, and the photoluminescence and capabilities of these molecules to form supramolecular self‐assemblies were systematically studied. It was found that fullerenols show wavelength‐dependent emission with an absolute fluorescent quantum yield of approximately 3.5 %. The PL characteristics are reminiscent of carbon dots, especially those obtained by using the top–down method. The studied fullerenols can be used to detect Cu2+ ions with a limit of detection down to 3.50 μm. In addition, the amphiphilicity of the fullerenols can be readily tuned by ionic complexation with cationic surfactants, such as 1‐tetradecyl‐3‐methylimidazoliumbromide (C14mimB) and tetradecyltrimethylammonium bromide (TTAB). On increasing the concentration of the surfactant, the transition of aggregates was induced from highly ordered vesicles to honeycomb‐structured crystals and finally to giant micelles. After the formation of supramolecular self‐assemblies, enhancement of photoluminescence was observed, which can be ascribed to the suppression of intramolecular vibrations and motion combined with the loosely packed self‐assembly array. This study provides a facile way to generate PL nanoarchitectures, which may find applications in fluorescent sensing, drug delivery, and optoelectronics. Coming together: Highly pure fullerenols have been prepared by dialysis and show photoluminescence in water that is sensitive to the presence of Cu2+ ions. When mixed with a cationic surfactant, a transition between the aggregates was induced from highly ordered vesicles to honeycomb‐structured crystals (see picture; cs=concentration of the surfactant).
- Subjects
FULLERENES; PHOTOLUMINESCENCE; NANOSTRUCTURED materials; SUPRAMOLECULAR chemistry; FLUORESCENCE
- Publication
Chemistry - A European Journal, 2018, Vol 24, Issue 62, p16609
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201803612