Black Gold: Plasmonic Colloidosomes with Broadband Absorption Self‐Assembled from Monodispersed Gold Nanospheres by Using a Reverse Emulsion System |
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| Authors: | Dilong Liu Dr. Fei Zhou Cuncheng Li Tao Zhang Honghua Zhang Prof. Weiping Cai Prof. Yue Li |
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| Affiliation: | 1. Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (P.R. China);2. University of Science and Technology of China, Hefei 230026 (P.R. China);3. School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong (P.R. China) |
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| Abstract: | A facile approach for the fabrication of novel black plasmonic colloidosomes assembled from Au nanospheres is developed by an emulsion‐templating strategy. This self‐assembly process is based on a new reverse water‐in‐1‐butanol emulsion system, in which the water emulsion droplets can dissolve into 1‐butanol (oil) phase at an appropriate rate. These Au colloidosomes possess hexagonal close‐packed multilayer shells and show a low reflectivity and intense broadband absorption owing to the strong interparticle plasmonic coupling, which is further investigated by a finite‐difference time‐domain method. This method is universal and is suitable for self‐assembly of different noble‐metal nanoparticles into different colloidosomes. These colloidosomes have important applications in photothermal therapy, biosensors, and drug delivery. |
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| Keywords: | colloidosomes gold plasmonics reverse emulsion systems self‐assembly |
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