An Artificial Light‐Harvesting System with Controllable Efficiency Enabled by an Annulene‐Based Anisotropic Fluid

Yu, Zhen; Bisoyi, Hari Krishna; Chen, Xu‐Man; Nie, Zhen‐Zhou; Wang, Meng; Yang, Hong; Li, Quan

doi:10.1002/ange.202200466

Cited by 9 publications

(1 citation statement)

References 67 publications

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“…(IV) DES can be designed with inherent chirality, which may transfer to self-assembled structures. Nevertheless, investigation of supramolecular chiral self-assemblies as well as the fabrication of CPL-active soft materials in DES is still premature. − …”

Section: Introductionmentioning

confidence: 99%

Eutectogels as Matrices to Manipulate Supramolecular Chirality and Circularly Polarized Luminescence

2022

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Solvent is regarded as a factor in tuning the supramolecular chirality of self-assemblies. Deep eutectic solvents (DESs) show diverse properties in contrast to other common solvents, which are emerging in fabricating functional aggregates and nanoarchitectures. Nevertheless, the emergence and manipulation of supramolecular chirality in DES still remain mysterious. Exploring supramolecular chirality in DES would produce tunable chiroptical materials considering their feasible preparation process and abundant hydrogen bonding sites. In this work, we explored the occurrence and manipulation of supramolecular chirality in DES. Transfer from inherent chiral DES to solutes in either aggregated or monomeric building units is blocked. However, the chiral assembly of π-conjugated amino acids was realized. Compared to aqueous media, self-assembly in DES hinders the spontaneous structural and chirality evolution that benefit from efficient solvation, where the π-conjugated amino acids were involved as hydrogen bonding donors. DES performs as a dye-friendly matrix to afford chiroptical eutectogels with tunable circularly polarized luminescence, whereby a large dissymmetry g-factor of up to 0.015 was realized. DES behaves as feasible and flexible solvents to fabricate and stabilize functional soft chiral self-assemblies with controllable chiroptical properties.

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Section: Introductionmentioning

confidence: 99%

Eutectogels as Matrices to Manipulate Supramolecular Chirality and Circularly Polarized Luminescence

2022

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Noncovalent Polymerization‐Activated Ultrastrong Near‐Infrared Room‐Temperature Phosphorescence Energy Transfer Assembly in Aqueous Solution

et al. 2022

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Noncovalent macrocycle‐confined supramolecular purely organic room‐temperature phosphorescence (RTP) is a current research hotspot. Herein, a high‐efficiency noncovalent polymerization‐activated near‐infrared (NIR)‐emissive RTP‐harvesting system in aqueous solution based on the stepwise confinement of cucurbit[7]uril (CB[7]) and β‐cyclodextrin‐grafted hyaluronic acid (HACD), is reported. Compared with the dodecyl‐chain‐bridged 6‐bromoisoquinoline derivative (G), the dumbbell‐shaped assembly G⊂CB[7] presents an appeared complexation‐induced RTP signal at 540 nm via the first confinement of CB[7]. Subsequently, benefitting from the stepwise confinement encapsulation of the β‐cyclodextrin cavity, the subsequent noncovalent polymerization of the binary G⊂CB[7] assembly enabled by HACD can contribute to the further‐enhanced RTP emission intensity approximately eight times in addition to an increased lifetime from 59.0 µs to 0.581 ms. Moreover, upon doping a small amount of two types of organic dyes, Nile blue or tetrakis(4‐sulfophenyl)porphyrin as an acceptor into the supramolecular confinement assembly G⊂CB[7] @ HACD, efficient RTP energy transfer occurs accompanied by a long‐lived NIR‐emitting performance (680 and 710 nm) with a high donor/acceptor ratio. Intriguingly, the prepared RTP‐harvesting system is successfully applied for targeted NIR imaging of living tumor cells by utilizing the targeting ability of hyaluronic acid, which provides a new strategy to create advanced water‐soluble NIR phosphorescent materials.

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Self‐Assembled Artificial Light‐Harvesting System Constructed Using Electrostatic Interactions in Aqueous Solution for the Sensing of Heavy Metal Cations

Shi

Song

et al. 2023

Advanced Optical Materials

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A supramolecular artificial light‐harvesting system (LHS) is successfully constructed in an aqueous environment using carbon dots (CDs) and α, β, γ, δ‐Tetrakis(1‐methylpyridinium‐4‐yl) porphyrin p‐Toluenesulfonate (TMPyP) via electrostatic interactions. Specifically, the CDs act as a donor, and TMPyP, which is loaded to the surface of the CDs, acts as an acceptor for the LHS. Energy transfer occurs from the CDs to the TMPyP in the assembled CDs‐TMPyP upon UV excitation. To demonstrate the applicability, the CDs‐TMPyP system is used as a sensor for Hg(II) in an aqueous solution. Subsequently, a functional material suitable for the detection and removal of Hg(II) is fabricated by integrating the CDs‐TMPyP into a polymer network.

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An Artificial Light‐Harvesting System with Controllable Efficiency Enabled by an Annulene‐Based Anisotropic Fluid

Cited by 9 publications

References 67 publications

Eutectogels as Matrices to Manipulate Supramolecular Chirality and Circularly Polarized Luminescence

Eutectogels as Matrices to Manipulate Supramolecular Chirality and Circularly Polarized Luminescence

Noncovalent Polymerization‐Activated Ultrastrong Near‐Infrared Room‐Temperature Phosphorescence Energy Transfer Assembly in Aqueous Solution

Self‐Assembled Artificial Light‐Harvesting System Constructed Using Electrostatic Interactions in Aqueous Solution for the Sensing of Heavy Metal Cations

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