Polarization switching of crystal structure in the nonphotochemical laser-induced nucleation of supersaturated aqueous l-histidine

Xiaoying Sun, Bruce Garetz, Allan S. Myerson

Research output: Contribution to journalArticle

Abstract

Polarization switching of polymorphs has been observed in the nonphotochemical laser-induced nucleation of aqueous L-histidine in the supersaturation range 1.40-1.60. Exposure of solutions to 0.24 GW/cm 2, 7 ns pulses of 532 nm light induced the nucleation of different polymorphs of L-histidine depending on polarization state of the light. Circularly polarized laser pulses tended to nucleate the orthorhombic A polymorph, whereas linearly polarized pulses tended to nucleate a mixture of the orthorhombic A and monoclinic B polymorphs. Higher supersaturation also favors the formation of mixed polymorphs. These observations support the hypothesis that the laser is organizing hydrogen-bonded groups of histidine molecules through an optical Kerr alignment.

Original languageEnglish (US)
Pages (from-to)1720-1722
Number of pages3
JournalCrystal Growth and Design
Volume8
Issue number5
DOIs
StatePublished - May 2008

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histidine
Polymorphism
Histidine
Nucleation
Crystal structure
nucleation
Polarization
supersaturation
crystal structure
Lasers
polarization
pulses
Supersaturation
lasers
organizing
alignment
hydrogen
Hydrogen
Laser pulses
molecules

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Polarization switching of crystal structure in the nonphotochemical laser-induced nucleation of supersaturated aqueous l-histidine. / Sun, Xiaoying; Garetz, Bruce; Myerson, Allan S.

In: Crystal Growth and Design, Vol. 8, No. 5, 05.2008, p. 1720-1722.

Research output: Contribution to journalArticle

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