AI Article Synopsis
- Spiropyran-based composites are receiving increased attention for their ability to respond to stimuli, particularly green photo stimuli, but their photoisomerization is limited due to the significant dipole moment change between the isomeric forms.
- Researchers propose a method to enhance photoisomerization by optimizing the states of spiropyran and the nanoparticles they are attached to, achieving effective grafting percentages and minimizing aggregation.
- The resulting composite demonstrates improved efficiency in removing heavy metals like Pb and Cr from water, suggesting potential applications in biotech, electronics, and environmentally friendly technologies.
Article Abstract
Recently, spiropyran-based composites have gained more attention on account of their stimuli-responsive essence, especially of the fascinating and green photo stimulus. However, the great dipole moment change between the ring-opened merocyanine and ring-closed spiropyran requires a large free volume available for isomerization, which significantly restrains the photoisomerization of spiropyran-based nanocomposites. Herein, a fascinating pathway by regulating the states both of spiropyran and the immobilized nanoparticle supports was put forward to facilitate the photoisomerization. The results demonstrated that the spiropyran grafting percentage of 5.18% and immobilized supports with less aggregation, high specific surface area, large pore size, and noncrystalline structure were suitable to fabricate spiropyran-based nanocomposites, which showed a significant improvement for Pb and Cr removal from aqueous solution on account of free photoisomerization of spiropyran on the support's surface. This work will pave the pathway to extend the exploitation of spiropyran-based nanocomposites in various fields such as biotechnology, physiology, and electronics to photonics and environmental-friendly fields.
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| http://dx.doi.org/10.1021/acsami.3c06774 | DOI Listing |
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Article Synopsis
- Spiropyran-based composites are receiving increased attention for their ability to respond to stimuli, particularly green photo stimuli, but their photoisomerization is limited due to the significant dipole moment change between the isomeric forms.
- Researchers propose a method to enhance photoisomerization by optimizing the states of spiropyran and the nanoparticles they are attached to, achieving effective grafting percentages and minimizing aggregation.
- The resulting composite demonstrates improved efficiency in removing heavy metals like Pb and Cr from water, suggesting potential applications in biotech, electronics, and environmentally friendly technologies.
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