Heterometallic [2]Catenane‐Crosslinked Supramolecular Networks with Improved Antibacterial Activity DOI
Qian Feng, Rui Ding, Mingming Zhang

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract The construction of supramolecular networks with novel crosslinks is great significance in expanding their chemical structures and exploring advanced functions. Herein, we prepare a type [2]catenane‐cored based on the crosslinking polyethylene glycol (PEG) using heterometallic [2]catenane unit. By adjusting molecular weight PEG, solubility can be tuned gels are formed low PEG. introduction offers good antibacterial properties owing to synergistic antimicrobial activity Pt(II) Cu(I) ions [2]catenane. This study provides simple efficient strategy for constructing topological as materials, which will promote structural design biological applications networks.

Language: Английский

Guest‐Regulated Generation of Reactive Oxygen Species from Porphyrin‐Based Multicomponent Metallacages for Selective Photocatalysis DOI
Ke Gao, Ying Cheng, Zeyuan Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(14)

Published: Feb. 2, 2024

Abstract The development of novel materials for highly efficient and selective photocatalysis is crucial their practical applications. Herein, we employ the host‐guest chemistry porphyrin‐based metallacages to regulate generation reactive oxygen species further use them photocatalytic oxidation benzyl alcohols. Upon irradiation, sole metallacage ( 6 ) can generate singlet 1 O 2 effectively via excited energy transfer, while its complex with C 70 ⊃C opens a pathway electron transfer promote formation superoxide anion (O ⋅ − ), producing both . addition 4,4′‐bipyridine (BPY) forms more stable ⊃BPY) coordination Zn‐porphyrin faces BPY, which drives fullerenes out cavities restores ability generation. Therefore, alcohols are oxidized into aldehydes upon irradiation in presence or ⊃BPY, they benzoic acids when employed as photosensitizing agent. This study demonstrates strategy that utilizes photooxidation reactions, could utilization related complexes

Language: Английский

Citations

17
Multicomponent, Multicavity Metallacages That Contain Different Binding Sites for Allosteric Recognition DOI
Haifei Liu, Chenxing Guo, Luqi Li

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(23), P. 15787 - 15795

Published: May 13, 2024

The encapsulation of different guest molecules by their recognition domains proteins leads to selective binding, catalysis, and transportation. Synthetic hosts capable selectively binding guests in cavities mimic the function are highly desirable but challenging. Here, we report three ladder-shaped, triple-cavity metallacages prepared multicomponent coordination-driven self-assembly. Interestingly, porphyrin-based metallacage is heteroleptic fullerenes (C60 or C70) coronene using its cavities, allowing distinct allosteric upon addition C60 C70. Owing affinities one molecule central cavity two units side while encapsulating C70 cavity. rational design multicavity assemblies that enable will guide further advanced supramolecular constructs with tunable properties.

Language: Английский

Citations

10
Enhancing the Photosensitivity of Hypocrellin A by Perylene Diimide Metallacage-Based Host–Guest Complexation for Photodynamic Therapy DOI Creative Commons
Rongrong Li,

Tianfeng Yang,

Xiuhong Peng

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: June 25, 2024

The development of supramolecular hosts which can efficiently encapsulate photosensitizers to improve the photodynamic efficacy holds great promise for cancer therapy. Here, we report two perylene diimide-based metallacages that form stable host-guest complexes with planar conjugated molecules including polycyclic aromatic hydrocarbons and (hypocrellin A). Such complexation not only prevents aggregation in aqueous environments, but also offers fluorescence resonance energy transfer (FRET) from metallacage further singlet oxygen generation (Φ

Language: Английский

Citations

10
Guest‐Regulated Generation of Reactive Oxygen Species from Porphyrin‐Based Multicomponent Metallacages for Selective Photocatalysis DOI
Ke Gao, Ying Cheng, Zeyuan Zhang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(14)

Published: Feb. 2, 2024

Abstract The development of novel materials for highly efficient and selective photocatalysis is crucial their practical applications. Herein, we employ the host‐guest chemistry porphyrin‐based metallacages to regulate generation reactive oxygen species further use them photocatalytic oxidation benzyl alcohols. Upon irradiation, sole metallacage ( 6 ) can generate singlet 1 O 2 effectively via excited energy transfer, while its complex with C 70 ⊃C opens a pathway electron transfer promote formation superoxide anion (O ⋅ − ), producing both . addition 4,4′‐bipyridine (BPY) forms more stable ⊃BPY) coordination Zn‐porphyrin faces BPY, which drives fullerenes out cavities restores ability generation. Therefore, alcohols are oxidized into aldehydes upon irradiation in presence or ⊃BPY, they benzoic acids when employed as photosensitizing agent. This study demonstrates strategy that utilizes photooxidation reactions, could utilization related complexes

Language: Английский

Citations

8
Host–guest complexation‐induced chirality switching of pillararenes by perylene diimide‐based hexagonal metallacages DOI Creative Commons

Yali Hou,

Chaoqun Mu,

Yunzhi Shi

et al.

Aggregate, Journal Year: 2024, Volume and Issue: unknown

Published: June 27, 2024

Abstract Chirality in confined nanospaces has brought some new insights into chirality transfer, amplification, and chiroptical properties. However, switching, which is a common phenomenon biological systems, never been realized environments. Herein, we report type of hexagonal metallacages that shows good host–guest interactions with ethoxy pillar[5]arene pillar[6]arene, as confirmed by single‐crystal X‐ray analysis. Importantly, when chiral pillar[5]arene‐based molecular universal joint (MUJ) used the guest, complexation would drive alkyl ring MUJ flip from outside to inside cavity its unit, enables configuration change along inversion MUJ. Moreover, facilitates transfer guests hosts, giving circularly polarized luminescence system. This study provides unique metallacage‐pillararene recognition motif for switching planar pillararenes, will promote construction systems tunable advanced applications.

Language: Английский

Citations

4
Artificial Light Harvesting Systems Based on Novel AIEgen-branched Rotaxane Dendrimers for Photocatalyzed Functionalization of C-H Bonds DOI Creative Commons

Xiao‐Qin Xu,

Yi-Ru Song,

Junyu Cao

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Novel AIEgen-branched rotaxane dendrimers with up to 42 precisely distributed TPE units were synthesized, enabling the construction of artificial LHSs that exhibit generation-dependent photocatalytic performance in C–H bond functionalization.

Language: Английский

Citations

0
Metal‐Organic Frameworks (MOFs) and Metal‐Organic Cages (MOCs) for Photocatalytic Hydrogen Production DOI
Chaoqun Mu,

Shijin Jian,

Mingming Zhang

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(43)

Published: May 29, 2024

Abstract Metal‐organic frameworks (MOFs) and metal‐organic cages (MOCs) have garnered significant attention as promising photocatalysts due to their tunable chemical structures integrated multifunctionality. To increase the photocatalytic efficiency, strategies like ligand functionalization, introducing additional catalytic sites, doping or encapsulating photosensitizers been explored for both MOFs MOCs. This concept review focuses on recent advancements in utilizing MOCs hydrogen production, highlighting unique characteristics respective mechanisms this field. Moreover, it outlines current challenges prospects faced by MOCs, offering an outlook future domain.

Language: Английский

Citations

3
Terpyridine-based metallo-cuboctahedron nanomaterials for efficient photocatalytic degradation of persistent organic pollutants DOI
Qixia Bai, Yan Huang,

Zhihong Chen

et al.

Nano Research, Journal Year: 2024, Volume and Issue: 17(8), P. 6833 - 6840

Published: June 24, 2024

Language: Английский

Citations

3
Host–Guest Interactions Induced Enhancement in Oxidase-Like Activity of a Benzothiadiazole Dye Inside an Aqueous Pd8L4 Barrel DOI
Debsena Chakraborty, Navjot Kaur,

Jagabandhu Sahoo

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(36), P. 24901 - 24910

Published: Aug. 28, 2024

The effect of host–guest interactions on the chemistry encapsulated molecules is a fascinating field research that has gained momentum in recent years. Much work this been focused such catalysis and photoluminescence dyes. However, related photoinduced processes, as photoregulated oxidase-mimicking activity, not explored much. Herein, we report unique example enhancement oxidase-like activity benzothiadiazole dye (G1) water through encapsulation within M8L4 molecular barrel (1). Favorable helped guest G1 to have better electron transfer oxygen leading increased production superoxide radical anions activity. Furthermore, inside 1 also caused change redox potentials which after produced oxidizing agent than free G1. These phenomena combined enhance upon cage 1. present demonstrates processes.

Language: Английский

Citations

3
Cavity‐Partitioned Self‐Assembled Cage for Sequential Separation in Aqueous Solutions DOI
Lijuan Wang,

Zi-En Zhang,

Yanzhen Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 20, 2024

The concept of pore space partition has emerged as an effective strategy for developing improved coordination-based supramolecular porous materials with exceptional performance. Herein, we report that a water-soluble self-assembled tetrahedral cage 1 partitioned cavity shown excellent performance multifunctional extractant. results show this unique can efficiently separate halogenated adamantanes, adamantane isomers, and polycyclic aromatic hydrocarbons. Furthermore, the influence cavity-partitioned on electrochemical properties redox-active molecules electrochemically driven reversible host-guest process also been demonstrated. findings offer valuable insights into design development new type controlled phase separation tailored properties.

Language: Английский

Citations

2