Transfer and Dynamic Inversion of Coassembled Supramolecular Chirality through 2D-Sheet to Rolled-Up Tubular Structure

Choi, Heekyoung; Cho, Kang Jin; Seo, Hee Jin; Ahn, Jin-Ho; Liu, Jinying; Lee, Shim Sung; Kim, Hyungjun; Feng, Chuanliang

doi:10.1021/jacs.7b09760

Cited by 63 publications

(43 citation statements)

References 28 publications

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“…The distribution of the chiral FeS 2 QDs under the chiral template of the hydrogel is the key to chirality transfer. Hydrogen bonds form between the nitrogen atoms of the capping reagent (Cys) of the FeS 2 QDs and the –COOH groups of the gelators, and are the main force driving the coassembly …”

mentioning

confidence: 99%

Tailoring Chiroptical Activity of Iron Disulfide Quantum Dot Hydrogels with Circularly Polarized Light

Hao

Gao

et al. 2019

Advanced Materials

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Chiral inorganic nanomaterials have recently attracted significant attention because of their many important applications, such as in asymmetric catalysis and chiral sensing. Here, chiral iron disulfide quantum dots (FeS2 QDs) are synthesized via chirality transfer using l/d‐cysteine (Cys) as chiral ligands. The chiral FeS2 QDs are coassembled with two gelators to produce a cogel (l‐ or d‐[Gel+FeS2]) with a g‐factor value of ±0.06. Interestingly, the cogels display intense circularly polarized luminescence. More significantly, the degree of twisting (twist pitch) and the diameter of the cogels can be markedly regulated by illumination with circularly polarized light (CPL) in the ranges of 120–213 and 37–65 nm, respectively, which is caused by the CPL‐induced electron transfer. This research opens the way for the design of chiroptical devices with a wide range of functions and applications.

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confidence: 99%

Tailoring Chiroptical Activity of Iron Disulfide Quantum Dot Hydrogels with Circularly Polarized Light

Hao

Gao

et al. 2019

Advanced Materials

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“…In addition to undergoing interesting morphological transitions, the DA-containing PDIs experience remarkable changes in absolute configurations at the supramolecular stereogenic centers during self-assembly 52,53 . This feature was probed by monitoring time-dependent circular dichroism (CD) spectra of 10% CHCl 3 / EtOH solutions (27 μM) of 1-R and 1-S (Fig.…”

Section: Resultsmentioning

confidence: 99%

Light-directed trapping of metastable intermediates in a self-assembly process

et al. 2020

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Self-assembly is a dynamic process that often takes place through a stepwise pathway involving formation of kinetically favored metastable intermediates prior to generation of a thermodynamically preferred supramolecular framework. Although trapping intermediates in these pathways can provide significant information about both their nature and the overall self-assembly process, it is a challenging venture without altering temperature, concentrations, chemical compositions and morphologies. Herein, we report a highly efficient and potentially general method for “trapping” metastable intermediates in self-assembly processes that is based on a photopolymerization strategy. By employing a chiral perylene-diimide possessing a diacetylene containing an alkyl chain, we demonstrated that the metastable intermediates, including nanoribbons, nanocoils and nanohelices, can be effectively trapped by using UV promoted polymerization before they form thermodynamic tubular structures. The strategy developed in this study should be applicable to naturally and synthetically abundant alkyl chain containing self-assembling systems.

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“…Supramolecular macrocycles, such as cyclodextrins, cucurbiturils, and calixarenes, have played a very important role in supramolecular chemistry (Moghaddam et al, 2011; Zhang and Wang, 2011; Jie et al, 2015; Choi et al, 2017). Compared with these traditional macrocycles, pillar[n]arenes have attracted more attention due to their unique planar chirality (Ogoshi et al, 2011b).…”

Section: Introductionmentioning

confidence: 99%

β-D-Galactose-Functionalized Pillar[5]arene With Interesting Planar-Chirality for Constructing Chiral Nanoparticles

Sun

Pangannaya

et al. 2019

Front. Chem.

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Planar-chiral pillar[5]arenes bearing β-D-galactose substituents on both rims have been successfully synthesized and effectively separated by silica gel chromatography with a high yield. The obtained (Sp)- and (Rp)-β-D-galactose functionalized pillar[5]arenes [(Sp-D)-GP5 and (Rp-D)-GP5] exhibit the Sp and Rp planar chirality. Furthermore, (Sp-D)-GP5 and (Rp-D)-GP5 can not racemize according to dynamic 1H NMR and CD spectra. Notably, GP5 is able to capture a guest molecule (DNS-CPT) to form a host-guest supramolecular amphiphile, which can further self-assemble into chiral nanoparticles with the Sp and Rp planar chirality of (Sp-D)-GP5 and (Rp-D)-GP5 still being retained, suggesting GP5 could be as reliable chiral sources to transfer the Sp and Rp planar chirality.

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Transfer and Dynamic Inversion of Coassembled Supramolecular Chirality through 2D-Sheet to Rolled-Up Tubular Structure

Cited by 63 publications

References 28 publications

Tailoring Chiroptical Activity of Iron Disulfide Quantum Dot Hydrogels with Circularly Polarized Light

Tailoring Chiroptical Activity of Iron Disulfide Quantum Dot Hydrogels with Circularly Polarized Light

Light-directed trapping of metastable intermediates in a self-assembly process

β-D-Galactose-Functionalized Pillar[5]arene With Interesting Planar-Chirality for Constructing Chiral Nanoparticles

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