Abstract
In this study, we report a novel three-component luminescent hydrogel, which is composed of amino acid derivatives (N,N′-di valine-3,4,9,10-perylenetetracarboxylic acid, NVPD), riboflavin (RF), and melamine (MM). The three-component hydrogel is attributed to multiple hydrogen bonds and the strong π-π stacking interaction between these molecules. Based on the strong hydrogen bonding of the gelator, when the reversible process between the gel and the solution take places it changes the pH of the system from 6.1 to 10.6. In addition, green fluorescence could be the emissive of the hydrogel under 498 nm and the conversion process of the aggregation state repeated reversibly by altering the value of ambient pH. This pH-responsive luminescent gel may display potential for use in nano pH sensors.
Highlights
Supramolecular hydrogels driven by non-covalent interactions of inter-molecules such as hydrogen bonding [1,2,3], host-guest recognition [4], electrostatic interaction [5], aromatic stacking [6,7], or metal-ligand coordination [8,9,10] have great applications in mechano-responsive sensor materials [11], drug delivery vehicles [12,13,14,15], biomedicine [16,17], cell culture [18,19], vitreous substitutes [20] and shape memory materials [21]
The dynamic nature of the non-covalent interactions can be exploited to design adaptive systems, because the environmental sensitivity of non-covalent bonds makes the systems willingly respond to external stimuli [22]
The supramolecular hydrogels are more sensitive to watch for their thermo-reversibility and stimuli-responsiveness
Summary
Supramolecular hydrogels driven by non-covalent interactions of inter-molecules such as hydrogen bonding [1,2,3], host-guest recognition [4], electrostatic interaction [5], aromatic stacking [6,7], or metal-ligand coordination [8,9,10] have great applications in mechano-responsive sensor materials [11], drug delivery vehicles [12,13,14,15], biomedicine [16,17], cell culture [18,19], vitreous substitutes [20] and shape memory materials [21]. One of the organic dyes, has been proven for an application prospect in organic light-harvesting systems, n-type channel field effect transistors, fluorescent emitters and biosensors, and in the construction of self-assembling nanostructures as an active components [41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56] Such as, Rybtchinski and co-workers have reported a stimuli-responsive supramolecular gel of perylene derivatives [57]. It can be reversible with the system’s pH change
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
