Construction and Humidity Response of a Room‐Temperature‐Phosphorescent Hybrid Xerogel Based on a Multicharge Supramolecular Assembly

Fan, Wentao; Chen, Yong; Niu, Jie; Su, Ting; Li, Jingjing; Yu, Liu

doi:10.1002/adpr.202000080

Cited by 4 publications

(4 citation statements)

References 24 publications

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“…In addition, we constructed hybrid xerogel based on electrostatic interactions (Figure 11). 48 After incorporation into a cationic amino clay (AC), supramolecular assembly 7-[6-deoxy-6-(2-sulfonic)]-β-…”

Section: Humidity Sensor Mediated By Supramolecular Assemblymentioning

confidence: 99%

“…In addition, we constructed hybrid xerogel based on electrostatic interactions (Figure ). After incorporation into a cationic amino clay (AC), supramolecular assembly 7-[6-deoxy-6-(2-sulfonic)]-β-cyclodextrin (SCD) with the phosphor bromophenyl-methyl-pyridinium chloride (PYCl) could be coagulated in situ. Bound by electrostatic interactions, AC/SCD⊃PYCl could lead to fluorescence–phosphorescence dual emission.…”

Section: Macrocycles Enhance Guest’s Phosphorescencementioning

confidence: 99%

Section: Macrocycles Enhance Guest’s Phosphorescencementioning

confidence: 99%

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Supramolecular Purely Organic Room-Temperature Phosphorescence

2021

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Conspectus In recent years, purely organic room-temperature phosphorescence (RTP) has aroused wide concern and promotes the development of the supramolecular phosphorescence. Different from organic crystallization, polymerization, or matrix rigidification, supramolecular strategy mainly takes advantage of the synergy between supramolecular co-assembly and strong binding by macrocyclic host compounds (cucurbit[n]urils, cyclodextrins, etc.) to overcome deficiencies such as poor processability and water solubility and improves RTP materials’ quantum efficiency and lifetime in the solid state or in an aqueous solution. Meanwhile, it expands application, especially in aqueous solution, in cell imaging. Therefore, supramolecular phosphorescence will become a new growth point and will have broad application prospects in chemistry, biology, and material science. This Account focuses on the uniquely synergetic advantages of co-assembly and host–guest interaction from macrocyclic hosts for enhancing RTP. This Account starts with a brief introduction of the recent development of organic RTP materials as well as the host–guest interaction and co-assembly. Then, we introduce a supramolecular solid-state RTP strategy involving an ultrahigh phosphorescent quantum yield via the tight encapsulation of macrocyclic host cucurbit[6]uril, an ultralong lifetime via changing the substituents of phosphors, and long-lived and bright RTP by the synergy of host–guest interaction and polymerization. Meanwhile, the applications of solid-state RTP materials for anti-counterfeiting and data encryption are presented. The third part will be the water-phase supramolecular phosphorescence systems constructed by water-soluble macrocyclic host cucurbit[8]uril. Host–guest interaction and polymerization worked together toward efficient phosphorescence in aqueous solution, and the multi-stage assembly promoted phosphorescent applications such as cell targeted imaging and energy transfer. A humidity sensor and data encryption by the conversion of supramolecular hydrogels and xerogels are also involved. In the summary section, we present perspectives and possible research directions for supramolecular phosphorescence. Furthermore, on the basis of previous research, we would like to conclude and propose the developing concept of “macrocycles enhance guest’s phosphorescence”, and this concept not only means that the macrocyclic host limits the movement of the guest compound or promotes interactions between guest compounds but also involves the synergetic enhancement centered on macrocyclic compounds via multi-stage supramolecular assembly which further improves the efficiency of RTP, water solubility, and biocompatibility. And we believe that this concept will be able, together with theory of “assembly-induced emission” and “aggregation-induced emission”, to accelerate the development of purely organic RTP materials.

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Section: Humidity Sensor Mediated By Supramolecular Assemblymentioning

confidence: 99%

Section: Macrocycles Enhance Guest’s Phosphorescencementioning

confidence: 99%

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Supramolecular Purely Organic Room-Temperature Phosphorescence

2021

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“…Organic luminescent compounds are important in many fields, such as optoelectronic devices, − molecular sensing, − and biological probes, − as a result of their advantages of easy structure modification, high sensitivity, environmental response, etc. Although with good biocompatibility, they are not comparable to inorganic quantum dots in quantum yield and stability.…”

Section: Introductionmentioning

confidence: 99%

Highly Emissive Organic Cage in Single-Molecule and Aggregate States by Anchoring Multiple Aggregation-Caused Quenching Dyes

Sun

Wang

Ren

et al. 2022

ACS Appl. Mater. Interfaces

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It remains a great challenge to design and synthesize organic luminescent molecules with strong emission in both dilute solution and aggregate state. Herein, an organic cage with dodecadansyl groups (D-RCC1) from an easy sulfonation reaction displays strong emissive behavior in dilute organic solution with a quantum yield of 42%. Moreover, D-RCC1 exhibits an ultrahigh quantum yield of 92% in the solid state, which is more than 3 times that of 27% for the model compound D-DEA. The results of the experiment and theoretical calculation show that the threedimensional symmetrical skeleton of the organic cage anchored evenly by multiple dye molecules effectively satisfies both high local density and a symmetrical distribution of chromophores, which prevents the interaction of dye molecules and ensures that dye molecules have strong emission in both single-molecule and aggregate states.

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Thermal Activated Reversible Phosphorescence Behavior of Solid Supramolecule Mediated by β‐Cyclodextrin

Zhou,

Zhao,

Bai

et al. 2024

Adv Funct Materials

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A reversible solid thermally responsive deep‐blue pure organic room temperature phosphorescent material is constructed by terephthalic acid (PPA), β‐cyclodextrin (β‐CD), and poly(vinylalcohol) (PVA). Attributed to the host‐guest interaction of β‐CD to isolate PPA chromophore and the rigid environment offered by hydrogen bonds to suppress the nonradiative decays, amorphous supramolecular assembly PPA‐CD/PVA not only induces a deep‐blue phosphorescence at 410 nm that differing from traditional PPA derivatives with green emission but also enhances the quantum yield up to 30.52%. Uncommonly, this film exhibits a unique reversible thermal stimulation response property with blue and cyan phosphorescence color transitions because heating can destroy the binding behavior between β‐CD and PPA, resulting in redshift phosphorescence emission from PPA stacking. Additionally, with the incorporation of Rhodamine B (RhB) or Sulforhodamine 101 (SR101) into the supramolecular film, color‐tunable phosphorescence from blue to white, yellow, and red relying on the thermal stimulation is realized through triplet‐to‐singlet Förster resonance energy transfer (TS‐FRET) platform. These thermochromic phosphorescence materials are successfully applied in multilevel anticounterfeiting and information encryption, which provides a new simple approach for temperature‐responsive TS‐FRET multicolor luminescence supramolecular materials.

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Construction and Humidity Response of a Room‐Temperature‐Phosphorescent Hybrid Xerogel Based on a Multicharge Supramolecular Assembly

Cited by 4 publications

References 24 publications

Supramolecular Purely Organic Room-Temperature Phosphorescence

Supramolecular Purely Organic Room-Temperature Phosphorescence

Highly Emissive Organic Cage in Single-Molecule and Aggregate States by Anchoring Multiple Aggregation-Caused Quenching Dyes

Thermal Activated Reversible Phosphorescence Behavior of Solid Supramolecule Mediated by β‐Cyclodextrin

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