A new cucurbit[10]uril-based AIE fluorescent supramolecular polymer for cellular imaging

Abstract

An AIE fluorescent supramolecular polymer (TPE-B@Q[10]) has been constructed from the newly synthesized AIE molecule TPE-B and the cucurbituril Q[10] via host-guest interactions. The molar ratio of Q[10]:TPE-B was found...

Supramolecular Polymeric Material Based on Twisted Cucurbit[14]uril: Sensitive Detection and Removal of Potential Cyanide from Water

“…Meanwhile, both SEM and TEM (Figure a,b) show that the precipitate (TPAP-Mb@ t Q­[14]-Fe­(CN) 6 3– ) after adsorption of Fe­(CN) 6 3– does not change significantly compared to the morphology of TPAP-Mb@ t Q­[14] and remains as a reticulated porous flocculent structure. It is known that the addition of electrolytes causes colloidal particles to aggregate into larger particles for precipitation. , Subsequently, ζ-potential experiments were used to study the charge of TPAP-Mb@ t Q­[14] to further investigate the adsorption mechanism in depth (Figures S19–S21). In deionized water, the ζ-potential of TPAP-Mb@ t Q­[14] was 24.17 mV, while that of Fe­(CN) 6 3– was −30.08 mV, which changes to −7.7 mV as Fe­(CN) 6 3– was gradually added to TPAP-Mb@ t Q­[14]. , The results indicate that the addition of Fe­(CN) 6 3– reduces or neutralizes the charge carried by TPAP-Mb@ t Q­[14], and the charge in the system is redistributed, leading to the occurrence of coagulation.…”

“…It is known that the addition of electrolytes causes colloidal particles to aggregate into larger particles for precipitation. 44,45 Subsequently, ζ-potential experiments were used to study the charge of TPAP-Mb@tQ [14] to further investigate the adsorption mechanism in depth (Figures S19−S21). In deionized water, the ζ-potential of TPAP-Mb@tQ [14] was 24.17 mV, while that of Fe(CN) 6 3− was −30.08 mV, which changes to −7.7 mV as Fe(CN) 6 3− was gradually added to TPAP-Mb@tQ [14].…”

“…), , and such new supramolecular polymer materials with AIE properties have been constructed using dynamically reversible noncovalent interactions, which not only have good optical properties but also have sensitive stimulus-responsive properties. In particular, the construction of supramolecular polymers with AIE properties based on macrocyclic compounds has received much attention in numerous fields, including biology, fluorescent sensors, and the field of stimuli-responsive materials. − Twisted cucurbit[14]­uril ( t Q­[14]) − is a rare macrocyclic compound of the Q­[ n ]­s family and possesses good water solubility. − Due to the two cavities of t Q­[14] can simultaneously bind two homologs or heterologous compounds, they can be further assembled to construct supramolecular polymers with different topologies.…”

Cucurbit [8] uril-based supramolecular fluorescent biomaterials for cytotoxicity and imaging studies of kidney cells

“…Therefore, a large number of supramolecular self-assembled materials have been applied in cellular imaging or other smart materials. Cucurbit [ n ]uril [Q ( n )s or CB ( n )s, n = 5–8, 10, 13–15], is usually used for designing supramolecular assemblies ( Kim et al, 2000 ; Cheng et al, 2013 ; Chen et al, 2021 ; Liu et al, 2021 ; Luo et al, 2022a ; Zhang et al, 2022a ; Luo et al, 2022b ; Zhang et al, 2022b ; Zhang et al, 2022c ). Cucurbit [n] urils are classical macrocyclic hosts formed by acid-catalyzed condensation of glycoluril and formaldehyde ( Figure 2 ) having cavity sizes within 2.4–11.0 Å and a common depth of 9.1 Å.…”

New Dual-Mode Orthogonal Tunable Fluorescence Systems Based on Cucurbit[8]Uril: White Light, 3d Printing and Anti-Counterfeit Applications

“…[11] The interest in PDI stems from its inherent desirable properties that include electron-accepting ability, enhanced thermal and optical properties, high extinction coefficients, and excellent quantum yields. [12][13][14][15][16][17][18][19] In water, the planar conjugated structure tends to promote π-π stacking and a lack of fluorescence.…”