The dynamic and visually striking properties of thermochromic materials, which alter their color with temperature fluctuations, have ignited a wave of research interest, driving advancements in diverse applications from smart sensors to sustainable design solutions. Temperature-responsive thermochromic materials, which has attracted a lot of interest because of their many uses in industries like safety indicators, textiles, coatings for sustainable energy efficiency and sensors. These thermochromic colorants are of organic like liquid crystals, leuco dyes and inorganic like vanadium oxide. They function by altering their structural characteristics and their behaviours change at operating conditions. This paper reviews on basic principles, synthesis, performance traits of thermochromic colorants. Difficulties of several thermochromic systems such as liquid crystals, leuco dyes, and phase-change materials recent developments in enhancing the reversibility, stability, and response time of thermochromic materials are emphasized. It sheds light on the potential for combining thermochromic materials with other intelligent materials in the future for multipurpose uses. The application of nanotechnology to thermochromic materials (TCM) has improved their color-changing capabilities, stability, and sensitivity. The flexibility and durability of polymer-based materials have increased, and TCM lifespan is increased by microencapsulation techniques that shield them from external influences.
RAGAVI et al. (Sun,) studied this question.