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Optical Detection of Solid‐State Chiral Structures with Unpolarized Light and in the Absence of External Fields
Author(s) -
Ananias Duarte,
Almeida Paz Filipe A.,
Carlos Luís D.,
Geraldes Carlos F. G. C.,
Rocha João
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200602849
Subject(s) - microporous material , octahedron , photoluminescence , lanthanide , spectroscopy , molecule , ion , white light , materials science , solid state , crystallography , enantiomer , chemistry , optoelectronics , stereochemistry , physics , organic chemistry , quantum mechanics , composite material
Chiral microporous lanthanide silicates Na 3 [(Y,Ln)Si 3 O 9 ]⋅3 H 2 O ( 1 ; Ln=Eu, Tb, Er, Ce) have enantiomeric domains that can be discriminated by means of Eu 3+ photoluminescence spectroscopy. In the framework of 1 (see picture), (Si 3 O 9 ) ∞ spiral chains interconnect the {(Y,Ln)O 6 } octahedra, and channels along [100] contain Na + ions and water molecules. Color code: {(Y,Ln)O 6 } yellow; {SiO 4 } green; O red; Na purple; H white.