TY - JOUR
T1 - Chiral silicate zeolites
AU - Dryzun, Chaim
AU - Mastai, Yitzhak
AU - Shvalb, Ayelet
AU - Avnir, David
PY - 2009
Y1 - 2009
N2 - Chiral zeolites are porous materials of prime importance because of their enantioselective potential applications in catalysis, in separation-science and in chromatography. We report a surprising observation made: as many as many 20 chiral silicate zeolites, none of which were recognized as such in their original publication, exist. In other words, the "holy grail" of having a library of such silicates was right under our nose. To be of practical use, such zeolites must reveal molecular level enantioselectivity; we show, for the first time, that chiral silicate zeolites are capable of enantioselective recognition of enantiomers, as revealed from comparative adsorption calorimetry experiments with either D- or L-histidine. The question of how to assign handedness to a chiral zeolite is addressed.
AB - Chiral zeolites are porous materials of prime importance because of their enantioselective potential applications in catalysis, in separation-science and in chromatography. We report a surprising observation made: as many as many 20 chiral silicate zeolites, none of which were recognized as such in their original publication, exist. In other words, the "holy grail" of having a library of such silicates was right under our nose. To be of practical use, such zeolites must reveal molecular level enantioselectivity; we show, for the first time, that chiral silicate zeolites are capable of enantioselective recognition of enantiomers, as revealed from comparative adsorption calorimetry experiments with either D- or L-histidine. The question of how to assign handedness to a chiral zeolite is addressed.
UR - http://www.scopus.com/inward/record.url?scp=63049125808&partnerID=8YFLogxK
U2 - 10.1039/b817497k
DO - 10.1039/b817497k
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AN - SCOPUS:63049125808
SN - 0959-9428
VL - 19
SP - 2062
EP - 2069
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
IS - 14
ER -