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Article: New findings reported from W. Hu and co-authors describe advances in physical chemistry.
- Article from:
- Chemicals & Chemistry
- Article date:
- November 13, 2009
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"A cholesteric liquid Crystal (Ch-LC) composite, made of it series of cholesteryl esters, a nematic LC, and a hydrogen bond (H-bond) chiral dopant (HCD), was prepared and filled into a planar treated cell. When the cell was heated, the selective reflection of the cell exhibited all Unusual blue shift," scientists in Beijing, People's Republic of China report.
"One of the reasonable mechanisms was that the helical twisting power (HTP) value of cholesteryl esters increased with In increasing temperature. The other one was that the H-bonds of HCD were ruptured when the temperature was above 60.0 degrees C and HCD was split into two kinds of new chiral dopants, which ...