Trans-4-Bromostilbene is primarily utilized in organic synthesis as a key intermediate for the preparation of various stilbene derivatives. It is often employed in the development of organic light-emitting diodes (OLEDs) due to its photophysical properties, which contribute to the efficiency and stability of these devices. Additionally, it serves as a building block in the synthesis of liquid crystals, which are essential components in display technologies. The compound is also explored in medicinal chemistry for the creation of potential pharmaceutical agents, particularly in the study of anti-inflammatory and anticancer compounds. Its ability to undergo photoisomerization makes it valuable in research related to photoresponsive materials.