“…21,22 SP, known for its photo-/mechano-responsive properties, has been widely incorporated into stimuli-responsive materials, enabling changes, enhancements, or even complete innovations in functionality, and it has demonstrated extraordinarily versatile responsivity and great potential in various applications. 23,24 The diverse range of SP derivatives highlight the importance of substituent structures and crosslinked network configurations in determining the switching activity in response to external stimuli. In some cases, a mechano-responsive colour change can be observed when substituents are crosslinked in different directions around the spiral ring.…”