Photocontrolled Light‐Harvesting Supramolecular Assembly Based on Aggregation‐Induced Excimer Emission

Li, Jingjing; Zhang, Heng‐Yi; Liu, Guoxing; Dai, Xiujuan J.; Chen, Lei; Liu, Yu

doi:10.1002/adom.202001702

Cited by 37 publications

(36 citation statements)

References 47 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on aggregation-induced excimer emissions, DAE derivatives and CD can also participate in the construction of photocontrolled light-harvesting supramolecular assemblies that exhibit broad-spectrum multicolor photoluminescence, with DAE providing the basis for light controllability. Liu et al [100] assembled polyanionic γ-CD, a pyrene derivative (PYC12), Nile red, and a DAE derivative into nanoparticles in an aqueous solution. The polyanionic γ-CD significantly promoted the aggregation-induced excimer emission properties of the PYC12 and a high-efficiency (up to 83%) energy transfer process from the PYC12 to the Nile red.…”

Section: Host-guest Complexes Based On Daementioning

confidence: 99%

“…[186] DAE units can be loaded within an energy donor/acceptor assembly, which allows the energy transfer process to be controlled through the reversible photoisomerization of DAE and thereby provides an effective method for regulating the emission characteristics of the supramolecular assembly. Liu et al [100] reported a multicolor, tunable, luminescent, supramolecular light-harvesting assembly formed by the self-assembly of polyanionic γ-cyclodextrin (COONaγ-CD), a pyrene derivative (denoted as PYC12 in the original text), Nile red, and a DAE derivative in an aqueous solution. Pyrene derivatives exhibit aggregation-induced excimer emission enhancement.…”

Section: Changes In Fluorescencementioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Future‐Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems

et al. 2022

View full text Add to dashboard Cite

cycloreversion of DAE under light irradiation produces many exciting functional effects, such as changes in photophysical and photochemical properties, [12] changes in the shape or mechanical properties of the solid, [13] electrical conductivity, [7b,14] and the generation of reactive oxygen species (ROS). [15] This type of photochromic compound can be considered a stilbene derivative. At this time, the most widely known and systematically studied DAE derivative structure contains two aryl groups and a benzene ring (usually two identical or different thiophene units with low aromatic stabilization energy [16] ) and a five-membered ring of perfluorocyclopentene and cyclopentene units [17] where the ethene bridge is located, which significantly improve photochromism. [18] In essence, the DAE photoisomerization process is a reversible electrocyclic reaction of the central 6π-electron systems. [2] Under light irradiation, DAE can rapidly and reversibly transform between its open and closed forms, and that transformation is accompanied by a color change caused by a change in the π-conjugation distribution. [2] The important thing is that the colorless opened-and colored closed-ring isomers are both thermally stable; that is, cyclization and cycloreversion do not proceed spontaneously in the dark; they need to be driven by external light irradiation at specific wavelengths. [2,19] Compared with classic lightresponsive molecules such as azobenzene, [20] the light intensity required to drive the isomerization of DAE is relatively low. Moreover, even after multiple cycles, the photochromic performance does not show significant fatigue in either the solution or solid state. [2,18b,21] DAE research to this point can be roughly divided into three stages in chronological order: early exploration of DAE's molecular structure and theory, nearly two decades of purpose-oriented molecular structure modification research, and about ten years of research into practical applications of DAE in assembly systems. Research before about 2000 focused mainly on developing more abundant DAE-derivative structures and advancing the systematic understanding of DAE's physical and chemical properties and switching performance. To regulate its switching performance and give it new functionality, many strategies for modifying the ethene bridge and aryl groups of DAE have been proposed. [22] In the first two research stages, the mechanisms and structural modification of DAE isomerization were thoroughly and systematically explored, and countless important Diarylethene (DAE) photoswitch is a new and promising family of photochromic molecules and has shown superior performance as a smart trigger in stimulus-responsive materials. During the past few decades, the DAE family has achieved a leap from simple molecules to functional molecules and developed toward validity as a universal switching building block. In recent years, the introduction of DAE into an assembly system has been an attractive strategy that enables the photochromic behavior of the b...

show abstract

Section: Host-guest Complexes Based On Daementioning

confidence: 99%

Section: Changes In Fluorescencementioning

confidence: 99%

See 1 more Smart Citation

Future‐Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Sustained by [π•••π] interactions, hydrogen bonding, hydrophobic forces, electrostatic interactions, and/or other noncovalent bonding interactions, the superstructures associated with these assemblies can be modulated, giving rise to tunable photophysical properties. [39,40] Moreover, in contrast with emission in the solution state, emission in the solid state-especially in the crystalline state-is highly dependent on the noncovalent bonding interactions between molecules and their geometrical arrangements with respect to each other. Consequently, altering the molecular arrangement in the crystalline state serves as an alternative approach to tuning solid-state luminescence.…”

Section: Introductionmentioning

confidence: 99%

Color‐Tunable Supramolecular Luminescent Materials

Wang

et al. 2021

Advanced Materials

108

View full text Add to dashboard Cite

Constructing multicolor photoluminescent materials with tunable properties is an attractive research objective on account of their abundant applications in materials science and biomedical engineering. By comparison with covalent synthesis, supramolecular chemistry has provided a more competitive and promising strategy for the production of organic materials and the regulation of their photophysical properties. By taking advantage of dynamic and reversible noncovalent bonding interactions, supramolecular strategies can, not only simplify the design and fabrication of organic materials, but can also endow them with dynamic reversibility and stimuli responsiveness, making it much easier to adjust the superstructures and properties of the materials. Occasionally, it is possible to introduce emergent properties into these materials, which are absent in their precursor compounds, broadening their potential applications. In an attempt to highlight the state‐of‐the‐art noncovalent strategies available for the construction of smart luminescent materials, an overview of color‐tunable materials is presented in this Review, with the emphasis being placed on the examples drawn from host–guest complexes, supramolecular assemblies and crystalline materials. The noncovalent synthesis of room‐temperature phosphorescent materials and the modulation of their luminescent properties are also described. Finally, future directions and scientific challenges in the emergent field of color‐tunable supramolecular emissive materials are discussed.

show abstract

“…The components of the chosen dyad (carbazole derivative and pyrene) were selected because they play a pivotal role in many areas of photophysics and optoelectronics. − These popular polycyclic aromatic hydrocarbons and their various derivatives (including silicon-based carbazole ,− and pyrene-containing compounds − ) have found application in optoelectronics, solar cells, TADF and organic light-emitting diode (OLED) materials, or fluorescent probes for elucidation of the geometries of various biomolecules. , There are also interesting studies that report white-light emission from pyrene-based compounds, − and many of them are related to aggregation-induced emission. Furthermore, there are known examples of carbazole–pyrene hybrid compounds for dye-sensitized solar cell applications, OLEDs, − and electroluminescent devices …”

Section: Introductionmentioning

confidence: 99%

White Light from Dual Intramolecular Charge-Transfer Emission in a Silylene-Bridged Styrylcarbazole and Pyrene Dyad

et al. 2021

View full text Add to dashboard Cite

Styrylcarbazole linked to pyrene by a dimethylsilyl bridge was synthesized in the search for new charge-transfer active materials for LED applications. In the course of a photophysical study, it turned out that such a donor-bridge-acceptor compound displayed three completely different types of emission depending on solvent polarity. The most attractive emission properties were found in acetonitrile in which two broad emission bands were observed. The resolved mechanism of the excited-state processes in acetonitrile was supported by singular value decomposition with self-modeling treatment of time-resolved emission spectra (ns-TCSPC). The data analysis revealed that there were two excited-state processes, that is, charge transfer within styrylcarbazole and electron transfer from styrylcarbazole to pyrene through a silylene bridge that was responsible for a broad dual emission. The general idea of designing compounds that display emission from more than one excited state covering a wide range of the visible spectrum can be a powerful tool in designing new white-light-emitting materials.

show abstract

Photocontrolled Light‐Harvesting Supramolecular Assembly Based on Aggregation‐Induced Excimer Emission

Cited by 37 publications

References 47 publications

Future‐Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems

Future‐Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems

Color‐Tunable Supramolecular Luminescent Materials

White Light from Dual Intramolecular Charge-Transfer Emission in a Silylene-Bridged Styrylcarbazole and Pyrene Dyad

Contact Info

Product

Resources

About