AI Article Synopsis
- The study addresses the challenge of creating long-wavelength fluorescent polymer hydrogels without traditional harmful compounds, focusing on the effects of spatial interactions in water-rich environments.
- The researchers developed a new strategy inspired by the color change of the protein astaxanthin, using boiling to trigger fluorescence changes in poly(N-acryloylsemicarbazide) hydrogels.
- The resulting hydrogels exhibit red fluorescence, strong stability, and customization potential for 3D printing, offering a novel approach to soft fluorescent devices without pre-existing fluorescent materials.
Article Abstract
The development of unconventional long-wavelength fluorescent polymer hydrogels without using polycyclic aromatic hydrocarbons or extended π-conjugation is a fundamental challenge in luminescent materials owing to a lack of understanding regarding the spatial interactions induced inherent clustering-triggered emission under water-rich conditions. Inspired by the color change of protein astaxanthin as a result of heat-induced denaturation, we propose a thermodynamically driven strategy to develop red fluorescence (~610 nm) by boiling multiple hydrogen-bonded poly(N-acryloylsemicarbazide) hydrogels in a water bath. We reveal that thermodynamically driven conformational changes of polymer chains from isolated hydrogen bonding donor-acceptor structures to through-space interaction structures induce intrinsic fluorescence shifts from blue to red during clustering-triggered emission. The proposed multiple hydrogen-bonding supramolecular hydrogel shows good fluorescence stability, mechanical robustness, and 3D printability for customizable shaping. We provide a viable method to prepare nonconventional long-wavelength fluorescent hydrogels towards soft fluorescent devices without initially introducing any fluorescent components.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11045767 | PMC |
| http://dx.doi.org/10.1038/s41467-024-47880-7 | DOI Listing |
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