Preparation of L-Alanine Crystals Containing Gold Nanoparticles

Autor:	Kijiro Kon-No, Masako Koyama, Koji Sasaki, Masaharu Shiraishi
Rok vydání:	2008
Předmět:	Alanine chemistry.chemical_classification Supersaturation Polymers and Plastics Arginine Stereochemistry Chemistry Nanoparticle Crystal growth Surfaces Coatings and Films Amino acid Colloidal gold Dispersion stability Physical and Theoretical Chemistry Nuclear chemistry
Zdroj:	Journal of Dispersion Science and Technology. 29:1266-1271
ISSN:	1532-2351 0193-2691
DOI:	10.1080/01932690701857434
Popis:	Amino acids provide useful foods, medicines, health foods, and nutritional supplements. We studied the morphology control of alanine, an amino acid. We also studied the effects of amino acid addition on the dispersion stability of gold nanoparticles. We then studied hybridization between alanine crystals and arginine-capped gold nanoparticles. Alanine crystal growth in a supersaturated alanine solution was found to increase linearly over time, and alanine crystal growth stopped as supersaturation decreased. Alanine crystals with arginine grew toward the c-axis because arginine was adsorbed onto the face (120) of alanine crystals. Absorption wavelengths of colloidal solutions changed for gold nanoparticles with arginine, suggesting that arginine was adsorbed onto gold nanoparticles. The change in alanine crystal morphology was the same for alanine crystals with arginine-capped gold nanoparticles in that it grew toward the c-axis. Alanine crystals contained arginine-capped gold nanoparticles toward the c-axis.
Databáze:	OpenAIRE
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