Supramolecular Assembly with Multiple Preorganised π‐Electronic Cages

Abstract

Kept in a cage: Complexation of phthalocyanine-grafted cyclodextrins and a sulfonated porphyrin leads to the formation of supramolecular nanowires through multivalent binding. These complexes contain multiple, preorganised π-electronic cages that efficiently capture C(60) in water.

Loading Photochromic Molecules into a Luminescent Metal–Organic Framework for Information Anticounterfeiting

“…These observations jointly indicated the occurrence of the FRET from the Eu 3+ donor in ZJU-88 to the CF-DAE acceptor.T he FRET efficiency (E)was calculated to be 88 % according to the reported methods. [25] Notably,t he confinement of DAE within the ZJU-88 is essential to draw the donor and acceptor in close proximity,which plays avital role in facilitating high-efficiency FRET. [26] Non-porous Eu/2,6pyridinedicarboxylic acid complex [27] Eu(PDA) 3 ,w hich also has spectral overlap with CF-DAE,w as chosen as am odel compound and mixed with OF-DAE in ethanol.…”

Mechanical Behaviors of Highly Swollen Supramolecular Hydrogels Mediated by Pseudorotaxanes

“…As expected, luminescent supramolecular hydrogels with bright red and green emission were obtained in TCPPNa- and pyranine-doped hydrogels, respectively. Generally, the fluorescence of aromatic chromophores was seriously quenched at high concentrations because of the self-aggregation via hydrophobic interactions and π–π stackings. − In contrast, the characteristic fluorescence of both dyes was still observed in our PPR-based supramolecular hydrogels, which may be originated from the rigidified 3D gel network that can inhibit the intrachromophoric interaction in the self-aggregation . Moreover, the introduction of chromophores could not affect the self-healing behaviors of the supramolecular hydrogels (Figure ).…”

“…43−45 In contrast, the characteristic fluorescence of both dyes was still observed in our PPRbased supramolecular hydrogels, which may be originated from the rigidified 3D gel network that can inhibit the intrachromophoric interaction in the self-aggregation. 19 Moreover, the introduction of chromophores could not affect the selfhealing behaviors of the supramolecular hydrogels (Figure 4). Since the desired luminescent properties of resultant hybrids can be easily tailored by an appropriate choice of different chromophores, this strategy is believed to be a new choice for the design and preparation of flexible optical devices and selfrepairable luminescent devices.…”

“…In our case, the guanidinium cations are evenly distributed along the axial direction of PPG chain, which makes it more conducive to realize the multivalent interactions between the molecular glue and Laponite matrix. 18,19 More significantly, different from the covalently chemical synthesis, the number of CD units and the amount of guanidinium cations can be fine-tunable by alternating the molecular weight of PPG polymers, thus leading to the different types of supramolecular hydrogels with controlled mechanical performance. Thus, we can envision that the rational design of PPRinvolved hydrogels may provide a feasible way in the fabrication of ultrastrong and moldable organic−inorganic hybrid materials.…”

Loading Photochromic Molecules into a Luminescent Metal–Organic Framework for Information Anticounterfeiting

“…These observations jointly indicated the occurrence of the FRET from the Eu 3+ donor in ZJU‐88 to the CF‐DAE acceptor. The FRET efficiency ( E ) was calculated to be 88 % according to the reported methods . Notably, the confinement of DAE within the ZJU‐88 is essential to draw the donor and acceptor in close proximity, which plays a vital role in facilitating high‐efficiency FRET .…”