◾ Point Groups

Here is a molecule of pentacene, an organic semiconductor. is conductive plastic can be used in high-performance organic thin-lm transistors. Applications include smart cards, smart price, and inventory cards (Lin, 1997). is chapter studies point groups. Point groups use symmetry to classify the shapes of individual objects, such as a molecule of pentacene. e symmetries are color-coded red and purple according to change of handedness.