Used as a key intermediate in the synthesis of functional dyes, particularly in the production of near-infrared (NIR) absorbing dyes for optical applications. Employed in electrochromic materials due to its electron-donating properties, enabling color change in response to electrical stimuli. Acts as a component in organic semiconductors and is explored in photovoltaic systems for enhancing light absorption. Also utilized in the development of sensors and nonlinear optical (NLO) materials owing to its strong electron delocalization and thermal stability.