Well-controlled spiropyran functionalized polystyrenes via a combination of anionic polymerization and hydrosilylation for photoinduced solvatochromism

Stimuli responsive dynamic polymer networks with tunable toughness and elasticity through the regulation of covalent crosslinking and reversible hydrogen bonds

“…31 The -NO 2 group was introduced into SPM 2 to enhance the conjugation and improve the stability of MC. 32 Then, the functionalized SIS with tunable DE/DH can be obtained through reasonable design and controlling of feed ratio during the synthesis process as shown in Scheme S2 (ESI †). The molecular compositions of SIS and the calculation of DE/DH were demonstrated using the 1 H-NMR spectra shown in Fig.…”

“…In addition, the molecular interactions strengthen with the solvent polarity; thus a dynamically stable MC form needed the longest time to return to the SP form in methanol compared to other solvents as MC molecules showed a stronger interaction between MCs and MeOH. 32 Furthermore, we also conducted the color change experiment of SPM 2 in acetonitrile and acetone solvents and we found that the color change of SPM 2 in acetonitrile and acetone was similar to that in methanol and ethanol; thus the color change of SPM 2 in methanol and ethanol was shown as representatives in Fig. 5a.…”

Nickel-Ion-Coordinated Reversibly Solvatochromic Polydiacetylene Based on Tubular Assembly of Macrocyclic Diacetylene

“…The study on chromogenic materials has been an attractive topic because of their great potential for applications in devising and developing sensor systems. − Chromogenic materials possess adaptive properties and present the ability to respond reversibly or irreversibly to external stimuli with chromatic changes as signaling output. − The chromogenic family of materials is ever-expanding and appears in a wide range of material classes; however, the chromogenic conjugated polymers feature important advantages in terms of sensitivity, signal amplification, and feasibility in device fabrication. − …”