Optical Activity
What is Optical Activity?
Optical activity is the ability of a chiral substance to rotate the plane of polarization of plane-polarized light. Enantiomers rotate light by equal amounts in opposite directions: the dextrorotatory (+) isomer rotates the plane clockwise, and the levorotatory (−) isomer counterclockwise. Optical activity is measured using a polarimeter and is fundamental to stereochemistry, with significant implications in pharmaceuticals, biochemistry, and the food industry.
Key Facts
Frequently Asked Questions
Optical activity is the ability of a chiral substance to rotate the plane of polarization of plane-polarized light. Enantiomers rotate light by equal amounts in opposite directions: the dextrorotatory (+) isomer rotates the plane clockwise, and the levorotatory (−) isomer counterclockwise. Optical activity is measured using a polarimeter and is fundamental to stereochemistry, with significant implications in pharmaceuticals, biochemistry, and the food industry.