Luminescence Resonance Energy Transfer in a Multiple‐Component, Self‐Assembled Supramolecular Hydrogel

Abstract

Cascade energy transfer from a sensitizer to Tb then to fluorescent dyes was studied for the first time in a supramolecular hydrogel. Efficient energy transfer from Tb to the dyes was observed, as established by time-delayed emission and excitation spectral analysis, lifetime data, and microscopic studies.

Embedment of Quantum Dots and Biomolecules in a Dipeptide Hydrogel Formed In Situ Using Microfluidics

“…S7), indicating that organic TCPP and inorganic QDs both exist in the hydrogel and exhibit an overlay color. [28] Notably, especially when being repeatedly swollen in water, almost no QDs are detected via UV-spectroscopy in the supernatant of the hydrogel, which further confirms their containment by the Fmoc-FF hydrogel.…”

“…Focusing on the entrapment of CdTe QDs with a maximum emission at 520 nm (QD‐520) in Fmoc‐FF/TCPP hydrogels, distinct fluorescent colors can be detected under UV‐light irradiation ranging from green to orange depending to the concentration ratio between QD‐520 and TCPP (Figure S7), indicating that organic TCPP and inorganic QDs both exist in the hydrogel and exhibit an overlay color [28] . Notably, especially when being repeatedly swollen in water, almost no QDs are detected by UV spectroscopy in the supernatant of the hydrogel, which further confirms their containment by the Fmoc‐FF hydrogel.…”

Amino‐terminated Poly(ethylene glycol) (AT‐PEG) Polymer Hydrogels as Efficient Anionic Dye Adsorbents

“…The aggregation and network formation of cross‐linked polymer chains has become one of the most expanding filed in the current research, due to the great potential in energy devices, biosensors, medical electrodes, biomedical imaging,, shape‐memory materials, drug delivery systems, and etc. Generally, the polymer hydrogels are established through the self‐assembly of interconnected polymer chains driven by various noncovalent interactions including typically hydrogen bonding, π−π interactions, hydrophobic interaction, van der Waals interaction, and electrostatic interaction to form network structure with a lot of cavities insides, and under suitable conditions, water molecules are immobilized within the network structure to form gels ,,. The hydrogel formed by the mixing of polymer macromolecules and low molecular weight gelators (LMWGs) can not endow the gel responsiveness to external stimuli and degradability but higher mechanical strength …”

Tuning the Förster Resonance Energy Transfer through a Self‐Assembly Approach for Efficient White‐Light Emission in an Aqueous Medium

“…Improving the solubility of π‐conjugated hydrophobic organic dyes and achieving strong and tunable fluorescence in aqueous medium is highly desirable from an applications perspective. The water‐soluble fluorophores or organized chromophoric assemblies are promising materials for sensing, cellular imaging, and light harvesting . Thus, several approaches of covalent modifications are employed to improve the solubility of hydrophobic compounds in water .…”

“…The water-soluble fluorophores or organized chromophoric assemblies are promising materials for sensing,c ellularimaging, and light harvesting. [1][2][3][4][5][6][7][8][9][10] Thus, several approaches of covalent modificationsa re employed to improve the solubility of hydrophobic compoundsi nw ater. [2,11] Nevertheless, such strategies require tedious synthesis and often alter the properties of the pristine molecular systems.…”