Aqueous Circularly Polarized Luminescence Induced by Homopolypeptide Self-Assembly

Jiang, Jinhui; Ma, Fulong; Dong, Ruihua; Zhang, Siwei; Zhang, Zicong; Tan, Haozhe; Cai, Xumin; Qiu, Zijie; Xiong, Yu; Han, Wei; Zhao, Zheng; Tang, Ben Zhong

doi:10.1021/jacs.3c06769

Cited by 17 publications

(1 citation statement)

References 75 publications

(133 reference statements)

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“…Nolte et al found that polystyrene- block -poly(isocyano- l -alanine- l -alanine) are able to self-assemble into superhelices, which possess an opposite chirality to the poly(isocyano- l -alanine- l -alanine) blocks . It is essential to further explore the rules behind governing the chirality transition from polymers to assemblies, which is crucial for advancing the controlled preparation and application of chiral nanostructures. − …”

Section: Introductionmentioning

confidence: 99%

Regulating the Chirality of the Superhelices Self-Assembled from Block Copolymer/Homopolymer Binary Systems by the Mixing Ratio of the Polymers

Cao,

Du,

Lin

et al. 2024

Macromolecules

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Chirality control is one of the fundamental aspects of the research of chiral nanostructures. Currently, there are a few reports regarding the chirality variation of polymer nanostructures induced by ambient preparation conditions without changing the chiral sense of the polymer backbones. Herein, we report findings that the chirality of the superhelices self-assembled by a binary polymer system containing rodlike core-forming poly(γ-benzyl-L-glutamate) (PBLG) homopolymers and helical screw-forming poly(γ-benzyl-L-glutamate)-block-poly(ethylene glycol) (PBLG-b-PEG) block copolymers can be varied by the mixture ratio of the polymers. It was found that the chirality of the PBLG-b-PEG/PBLG superhelices can change from right-handed to left-handed by decreasing the fraction of the block copolymers. In such a process, the PBLG backbone of polymers retains their right-handed helical conformation, while the arrangement of the pendant phenyl groups varies from a contracted left-handed form to an extended righthanded form, which leads to the chirality evolution behaviors of the superhelices. This work presents a novel route regulating the chirality of chiral nanostructures formed by chiral polymers and enriches our knowledge for chirality evolution behaviors from polymers to nanostructures.

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Section: Introductionmentioning

confidence: 99%

Regulating the Chirality of the Superhelices Self-Assembled from Block Copolymer/Homopolymer Binary Systems by the Mixing Ratio of the Polymers

Cao,

Du,

Lin

et al. 2024

Macromolecules

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Concentration‐Switchable Assembly of Carbon Dots for Circularly Polarized Luminescent Amplification in Chiral Logic Gates and Deep‐Red Light‐Emitting Diodes

Ai,

Wang,

Wang

et al. 2024

Advanced Materials

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Stimuli‐responsive circularly polarized luminescent (CPL) materials are expected to find widespread application in advanced information technologies, such as 3D displays, multilevel encryption, and chiral optical devices. Here, using R‐/S‐α‐phenylethylamine and 3,4,9,10‐perylenetetracarboxylic dianhydride as precursors, chiral carbon dots (Ch‐CDs) exhibiting bright concentration‐dependent luminescence are synthesized, demonstrating reversible responses in both their morphologies and emission spectra. By adjusting Ch‐CD concentration, the switchable wavelength is extended over 180 nm (539–720 nm), with the maximum quantum efficiency reaching 100%. Meanwhile, upon increasing Ch‐CD concentration, the emission wavelength red‐shifts, while the chirality of the assembled nanoribbons is synchronously amplified, ultimately achieving CPL at 709 nm and a maximum luminescence asymmetry factor of 2.18 × 10−2. These values represent the longest wavelength and the largest glum reported for CDs. Considering the remarkable optical properties of the synthesized Ch‐CDs, multilevel chiral logic gates are designed, and their potential practical applications are demonstrated in multilevel anti‐counterfeiting encryption, flexible electronic printing, and solid‐state CPL. Furthermore, deep‐red chiral electroluminescence light‐emitting diodes (EL‐LEDs) are prepared using these Ch‐CDs, achieving an external quantum efficiency of 1.98%, which is the highest value reported to date for CDs in deep‐red EL‐LEDs, and the first report of chiral electronic devices based on CDs.

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Aggregate Science: from Molecules, beyond Molecules

Ma,

Zhang,

Jiang

et al. 2024

Advanced Materials

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Over the past centuries, molecular science has played a dominant role in the advancement of physical science by exploring the structure–property relationships at a single molecular level. However, when molecules form aggregates, a dilemma arises as the structures and properties often differ significantly from those of molecular constituents. To address this, the concept of aggregate science emphasizes a holistic approach to understanding the structures–properties relationship of substances. Despite the recognition of holism in aggregate research, there are still challenges in investigating the complex operations and interplays, particularly in understanding the newly emergent structures and properties in the macroscopic world. Therefore, there is a need to further advance the concept and methodology. In this regard, this perspective highlights three types of influences that aggregation exerts on substance properties: activation, transformation, and emergence. Furthermore, examples from aggregation‐induced emission research and related fields are provided to illustrate how aggregate science can be studied. This perspective emphasizes that the molecule is of significance and the structures and properties are also dramatically influenced by aggregation. Additionally, potential research methodologies, such as focusing on intra‐ and intermolecular interactions, adjusting aggregates morphology, and regulating the constituents, along with directions, and implications are offered for future studies.

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Aqueous Circularly Polarized Luminescence Induced by Homopolypeptide Self-Assembly

Cited by 17 publications

References 75 publications

Regulating the Chirality of the Superhelices Self-Assembled from Block Copolymer/Homopolymer Binary Systems by the Mixing Ratio of the Polymers

Regulating the Chirality of the Superhelices Self-Assembled from Block Copolymer/Homopolymer Binary Systems by the Mixing Ratio of the Polymers

Concentration‐Switchable Assembly of Carbon Dots for Circularly Polarized Luminescent Amplification in Chiral Logic Gates and Deep‐Red Light‐Emitting Diodes

Aggregate Science: from Molecules, beyond Molecules

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