Determination of structural chirality of berlinite and quartz using resonant x-ray diffraction with circularly polarized x-rays

被引：36

作者：

Tanaka, Yoshikazu ^{[1
]}

Kojima, Taro ^{[1
,2
]}

Takata, Yasutaka ^{[1
,2
]}

Chainani, Ashish ^{[1
]}

Lovesey, Stephen W. ^{[3
,4
]}

Knight, Kevin S. ^{[3
]}

Takeuchi, Tomoyuki ^{[1
,5
]}

Oura, Masaki ^{[1
]}

Senba, Yasunori ^{[5
]}

Ohashi, Haruhiko ^{[5
]}

Shin, Shik ^{[1
]}

机构：

[1] RIKEN SPring 8 Ctr, Sayo, Hyogo 6795148, Japan

[2] Univ Tokyo, Dept Complex Sci & Engn, Chiba 2778561, Japan

[3] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[4] Rutherford Appleton Lab, Diamond Light Source, Didcot OX11 0QX, Oxon, England

[5] Japan Synchrotron Radiat Res Inst JASRI, Sayo, Hyogo 6795198, Japan

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 14期

关键词：

REFLECTIONS; DICHROISM; ABSOLUTE; CRYSTAL;

D O I：

10.1103/PhysRevB.81.144104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Many proteins, sugars, and pharmaceuticals crystallize into two forms that are mirror images of each other (enantiomers) such as our right and left hands (chiral). Berlinite (AlPO(4)) and low quartz (SiO(2)) have enantiomers belonging to a space-group pair, P3(1)21 (right-handed screw) and P3(2)21 (left-handed screw). We use circularly polarized resonant x-ray diffraction to study structural chirality. Our results demonstrate that positive and negative circularly polarized x-rays at the resonant energy of berlinite (Al 1s edge) and low quartz (Si 1s edge) can distinguish the absolute structure (right or left-handed screw) of an enantiomer. The advantage of our method is that the measurement of only one space-group forbidden reflection is enough to determine the chirality. This method is applicable to chiral motifs that occur in biomolecules, liquid crystals, ferroelectrics and antiferroelectrics, multiferroics, etc.

引用

页数：9

共 22 条

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[Anonymous], 1982, QUANTUM ELECTRODYNAM

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