A Doubly Alkynylpyrene‐Threaded [4]Rotaxane That Exhibits Strong Circularly Polarized Luminescence from the Spatially Restricted Excimer

Inoûye, Masahiko; Hayashi, Koichiro; Yonenaga, Yuki; Itou, Tatsuya; Fujimoto, Kazuhisa; Uchida, Taka-aki; Iwamura, Michiko; Nozaki, Koichi

doi:10.1002/ange.201408193

Cited by 62 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CPL was also observed from spatially restricted excimer of pyrene molecules within the γ-CD cavity. 30,31 The strong CPL signal (g lum = −1.5 × 10 −2 ) is believed to arise from the two stacked pyrenes existing in the rotaxane in an asymmetrically twisted manner (Figure 2c). From the above discussions it is clear that creation of excimer is a suitable method to enhance the g lum in organic molecular systems.…”

Section: The Journal Of Physical Chemistry Lettersmentioning

confidence: 97%

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

Kumar

Nakashima

Kawai

2015

J. Phys. Chem. Lett.

621

373

View full text Add to dashboard Cite

Circularly polarized luminescence, or CPL, is a luminescence phenomenon that provides the differential emission intensity of right and left circularly polarized light, thereby providing information on the excited state properties of the chiral molecular systems. In recent years, there has been a growing interest toward the development of organic chromophores capable of circularly polarized emission due to their potential applications in sensors, asymmetric synthesis as well as display and optical storage devices. The major drawback with organic molecules is the low dissymmetric factors exhibited by these systems. One of the recent strategies adopted for the improvement in luminescence dissymmetry of organic systems is through the controlled self-assembly of chromophores. In this Perspective, we highlight the recent experimental and theoretical developments in the field of chiral organic chromophoric systems and their self-assembly, that has produced promising results toward the enhancement of glum values in CPL.

show abstract

Section: The Journal Of Physical Chemistry Lettersmentioning

confidence: 97%

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

Kumar

Nakashima

Kawai

2015

J. Phys. Chem. Lett.

621

373

View full text Add to dashboard Cite

show abstract

“…CPL can reportedly be generated from fluorescent dyes spatially fixed in cyclodextrin. 78,79 There are reports of CPL from chiral metal complexes, helical polymers, chiral liquid crystals and other chiral organic systems. [80][81][82][83][84][85] Chirality produced from supramolecular gels differs from molecular chirality.…”

Section: Development Of Optical Modulatorsmentioning

confidence: 99%

Polymer functionalization by luminescent supramolecular gels

Ihara

Takafuji

Kuwahara

2016

Polym J

View full text Add to dashboard Cite

In this review, we describe luminescent supramolecular gels that are formed by the self-assembly of low-molecular-weight compounds, focusing specifically on glutamide-based derivatives. We have developed various glutamides as supramolecular gel-forming compounds, and their unique features are characterized by the fact that most of the derivatives can form nanofibrils based on highly ordered aggregation in aqueous and organic solutions. The aggregated states are often accompanied by supramolecular functions. For example, when the glutamide has an optically functional group, such as a fluorophore, the produced aggregates show unique optical functions such as enhanced chirality (circular dichroism), fluorescence with a large Stokes shift and circularly polarized luminescence. Interestingly, these functions can be achieved in polymer-mixed systems. Because the glutamides form nanofibrillar networks even in polymers, the obtained polymer composites remain transparent because of low light scattering. Supramolecular functions are introduced in the presence of glutamide aggregates. This paper also describes polymer functionalization with glutamide-based supramolecular gels and their applications in light management technologies.

show abstract

“…26 In recent years, the system based on chiral rotaxane has been developed rapidly. [27][28][29][30][31][32][33] Generally, the construction of a chiral rotaxane requires the introduction of a chiral wheel or a chiral axis and the binding site between the wheel and the axis. [28][29][30][31] Such chiral rotaxane could be regulated by external stimuli to change the conformation of the rotaxane molecule, thus rendering the switching in the chiroptical properties.…”

Section: Introductionmentioning

confidence: 99%

Chiroptical switching in the azobenzene‐based self‐locked [1]rotaxane by solvent and photoirradiation

Song

Zhu

et al. 2023

Chirality

View full text Add to dashboard Cite

Because of its dynamic reversible nature and simple regulation properties, rotaxane systems provided a good route for the construction of responsive supramolecular chiral materials. Here, we covalently encapsulate the photo‐responsive guest molecule azobenzene (Azo) in a chiral macrocycle β‐cyclodextrin (β‐CD) to prepare self‐locked chiral [1]rotaxane [Azo‐CD]. On this basis, the self‐adaptive conformation of [Azo‐CD] was manipulated by solvent and photoirradiation; meanwhile, dual orthogonal regulation of the [1]rotaxane chiroptical switching could also be realized.

show abstract

A Doubly Alkynylpyrene‐Threaded [4]Rotaxane That Exhibits Strong Circularly Polarized Luminescence from the Spatially Restricted Excimer

Cited by 62 publications

References 47 publications

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

Polymer functionalization by luminescent supramolecular gels

Chiroptical switching in the azobenzene‐based self‐locked [1]rotaxane by solvent and photoirradiation

Contact Info

Product

Resources

About