Light-driven molecular motion modifying the electronic structure and spin properties of solid organic superstructure

The polarized light acted as one of the non-contacted media could effectively tune the crystal structure to improve the physical properties. In this work, under polarized laser excitation, the molecular motion is driven inside the crystals, where the electronic structure of the crystal is affected to further change the spin and optical properties. However, decreasing the temperature to 77 K, the external polarized laser cannot produce direct molecular motion. Moreover, switching the incident laser from the linearly to circularly polarized state, the dependence of the molecular motion on the spin and optical properties show pronounced difference.

Automated summary

The study demonstrates that polarized light can effectively tune the crystal structure by driving molecular motion and affecting the electronic structure, hence improving physical properties. At low temperatures, external polarized laser is unable to directly influence molecular motion, while changing the polarization state of incident light shows pronounced effects on molecular motion.