Publications by authors named "Conghao Wu"
Photostimulus-responsive fluorescent materials are promising for anticounterfeiting and UV printing due to rapid response and simple preparation. In this paper, we propose a novel strategy to prepare photostimulus-responsive materials SP@HOF-olefin by integrating the photochromic molecule spiropyran (SP) with postsynthetic modified hydrogen-bonded organic frameworks (HOF-olefin). Compared to SP@HOF, the composites SP@HOF-olefin exhibit enhanced photochromic properties, such as a fast response speed, pronounced color contrast, and exceptional fatigue resistance.
View Article and Find Full Text PDFDynamic fluorescent switches with multiple light outputs offer promising opportunities for advanced security encryption. However, the achievement of dynamic emission, particularly when based on the timing of external stimuli, continues to present a significant challenge. Herein, a unique dynamic fluorescent switch was developed by integrating spiropyran molecules (SP) into a core-shell structure (SiO@Tb-MOF).
View Article and Find Full Text PDFArticle Synopsis
- - The excessive use of paper has harmed the environment, leading to a need for alternatives; rewritable paper made with hydrochromic covalent organic frameworks (COFs) offers a sustainable solution.
- - The COFs cause color changes in the paper from red to black when exposed to water or acidic solvents, allowing for reversible writing and potential in water-jet printing without degrading over multiple uses.
- - The researchers improved the paper's quality by using an interface polymerization strategy, resulting in highly crystalline membranes for more efficient printing applications.
Article Synopsis
- Traditional encryption technologies are becoming outdated due to advancements in forgery and decryption, prompting the need for more sophisticated multidimensional encryption methods.
- Researchers developed new photo-stimuli responsive materials by combining photochromic molecules called spiropyrans with naphthalimide-functionalized silica aerogels to create color-emitting materials.
- The study demonstrated a process where these materials change fluorescence colors under UV light due to energy transfer, enabling the development of dynamic encryption patterns and multiple codes for secure information encryption.