Determination of molecular chirality is becoming increasingly importan
t due to the sophistication in mode of action studies of biological re
actions and the importance of chiral drugs. The exciton coupled CD, ba
sed on through space coupling, is a versatile microscale method with s
uperb sensitivity that can be applied to a variety of problems includi
ng biopolymers and clusters in lipids. Applications of the exciton cou
pled CD method to the following problems exemplify its versatility.