Preparation of fluorescent ink using perylene-encapsulated silica nanoparticles toward authentication of documents

Abumelha, Hana M.; Alharbi, Haifa; Abualnaja, Matokah; Alsharief, Hatun H.; Ashour, Gadeer R. S.; Saad, Fawaz A.; El‐Metwaly, Nashwa M.

doi:10.1016/j.jphotochem.2023.114706

Cited by 6 publications

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nonetheless, significant efforts have recently focused on developing inorganic composite sensors or probes by incorporating various PDIs, although these sensors were designed primarily for bioimaging or monitoring of other analytes [38,39]. The common way to fabricate inorganic composite sensors of PDI would be via the functionalization or blending of PDI with organic [40], inorganic [41][42][43] or organic-inorganic [44][45][46][47][48][49] counterparts in the form of conjugates or nanoparticles, which are conducive to development of fluorescence bioimaging, NIR-absorbing photosensitizers for photodynamic therapy and environmental or health monitoring [50]. Surface immobilization of PDIs on inorganic nanoparticles, such as silica gels [51,52] and single-walled carbon nanotubes (SWCNTs) [53], has also been reported for fluorescent or colorimetric sensing.…”

Section: Ph Response With Pdi-involved Compositesmentioning

confidence: 99%

Architectures and Mechanisms of Perylene Diimide-Based Optical Chemosensors for pH Probing

et al. 2023

View full text Add to dashboard Cite

The precise control and monitoring of pH values remain critical for many chemical, physiological and biological processes. Perylene diimide (PDI)-based molecules and materials exhibit excellent thermal, chemical and photochemical stability, unique UV-vis absorption and fluorescent emission properties, low cytotoxicity, as well as intrinsic electron-withdrawing (n-type semiconductor) nature and impressive molecular assembly capability. These features combined enable promising applications of PDIs in chemosensors via optical signal modulations (e.g., fluorescent or colorimetric). One of the typical applications lies in the probing of pH under various conditions, which in turn helps monitor the extracellular (environmental) and intracellular pH change and pH-relying molecular recognition of inorganic or organic ions, as well as biological species, and so on. In this review, we give a special overview of the recent progress in PDI-based optical chemosensors for pH probing in various aqueous and binary water–organic media. Specific emphasis will be given to the key design roles of sensing materials regarding the architectures and the corresponding sensing mechanisms for a sensitive and selective pH response. The molecular design of PDIs and structural optimization of their assemblies in order to be suitable for sensing various pH ranges as applied in diverse scenarios will be discussed in detail. Moreover, the future perspective will be discussed, focusing on the current key challenges of PDI-based chemosensors in pH monitoring and the potential approach of new research, which may help address the challenges.

show abstract