Abstract
Photo (i.e., light) and temperature are recognized to serve as efficient stimuli to trigger luminescence changes. The photo- and thermo-responsive luminescence changes are known as photochromism and thermochromism of luminescence, respectively. Traditional photochromic and thermochromic luminescent systems inevitably suffer the problem of fluorescence quenching. Fortunately, the photochromic and thermochromic aggregation-induced emission (AIE) luminogens perform very well in addressing such issues. In this chapter, first the fundamentals of photochromism and thermochromism are briefly introduced. Subsequently, the discussion of photochromic AIE systems is divided into small sections according to their design principles, while the thermochromic AIE systems are discussed in terms of their components and structures. Their AIE feature, photochromism/thermochromism properties, and potential applications are highlighted. Last but not least, the existing challenges and future directions in this area are prospected.
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