標題: Laser trapping-induced crystallization of L-phenylalanine through its high-concentration domain formation
作者: Yuyama, Ken-ichi
Wu, Chi-Shiun
Sugiyama, Teruki
Masuhara, Hiroshi
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
公開日期: 2014
摘要: We present the laser trapping-induced crystallization of L-phenylalanine through high-concentration domain formation in H2O and D2O solutions which is achieved by focusing a continuous-wave (CW) near-infrared laser beam at the solution surface. Upon laser irradiation into the H2O solution, laser trapping of the liquid-like clusters increases the local concentration, accompanying laser heating, and a single plate-like crystal is eventually prepared at the focal spot. On the other hand, in the D2O solution, a lot of the monohydrate needle-like crystals are observed, not at the focal spot where the concentration is high enough to trigger crystal nucleation, but in the 0.5-1.5 mm range from the focal spot. The dynamics and mechanism of the amazing crystallization behaviour induced by laser trapping are discussed from the viewpoints of the concentration increase due to laser heating depending on solvent, the large high-concentration domain formation by laser trapping of liquid-like clusters, and the orientational disorder of molecules/clusters at the domain edge.
URI: http://hdl.handle.net/11536/24058
http://dx.doi.org/10.1039/c3pp50276g
ISSN: 1474-905X
DOI: 10.1039/c3pp50276g
期刊: PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
Volume: 13
Issue: 2
起始頁: 254
結束頁: 260
顯示於類別:期刊論文


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