Synthesis of Gold Nano- and Microplates by Tryptophan and 5-Hydroxy-Tryptophan

Abstract:

L-Tryptophan and 5-Hydroxy-Tryptophan were used to synthesis the plate-like gold particles. The morphology of gold plates can be tunable from several nanometers to dozens of micrometers by changing reaction conditions. High temperature was not only increased the reaction ratio, but also changed the morphology of gold products. The size of gold plate was determined by the molar ratio of tryptophan to HAuCl₄ . The pH value of HAuCl₄ also played an important role in the formation of gold plates. One more hydroxyl group in the tryptophan enhanced the reducing ability of tryptophan, which was not suitable for the anisotropic growth.

• Periodical: Advanced Materials Research (Volumes 194-196)
• Pages: 397-401
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.194-196.397
• Online since: February 2011
• Authors: Ya Nan Sun, Xi Yu Ding, Li Na Du, Zhen Jiang, Hui Xu, Ya Biao Yu, Yang Li, Qi Qing Zhang
• Keywords: 5-Hydroxy-Tryptophan, Gold Plate, Hydroxyl Group, L-Tryptophan, Reaction Condition

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