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Tuesday, August 14, 2018

Pseudopolymorph Control of l-Phenylalanine Achieved by Laser Trapping

Chi-Shiun Wu, Pei-Yun Hsieh, Ken-ichi Yuyama, Hiroshi Masuhara, and Teruki Sugiyama

The pseudopolymorphism of l-phenylalanine, monohydrate and anhydrous crystals, was arbitrarily controlled by laser trapping with a focused continuous-wave near-infrared laser beam. Crystallization was realized even from unsaturated solution, when laser trapping always produced the anhydrous crystal. Contrarily, the monohydrate crystal was constantly formed from supersaturated solution. In saturated solution, the pseudopolymorphism strongly depended on laser power and polarization.

DOI

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