Cage‐To‐Cage Transformations in Self‐Assembled Coordination Cages Using “Acid/Base” or “Guest Binding‐Induced Strain” as Stimuli DOI
Vellaiyadevan Sivalingam,

Minaz Parbin,

Shobhana Krishnaswamy

и другие.

Angewandte Chemie, Год журнала: 2024, Номер 136(23)

Опубликована: Апрель 3, 2024

Abstract Controlling supramolecular systems between different functional forms by utilizing acids/bases as stimuli is a formidable challenge, especially where labile coordination bonds are involved. A pair of acid/base responsive, interconvertible 1,5‐enedione/pyrylium based Pd 2 L 4 ‐type cages prepared that exhibit differential guest binding abilities towards disulfonates varied sizes. three‐state switch has been achieved, (i) weakly coordinating base induced cage‐to‐cage transformation in the first step, (ii) strongly triggered cage disassembly second and (iii) third step shows acid(strong) promoted generation initial cage, thereby completing cycle. To our surprise, specific disulfonate facilitated transformations inducing strain on assembly opening pyrylium rings cage. Through competitive study, we demonstrated superior capability octacationic pyrylium‐based over similar‐sized tetracationic These results provide reliable approach to reversibly modulate properties acid/base‐responsive self‐assembled cages.

Язык: Английский

Near-infrared metal agents assisting precision medicine: from strategic design to bioimaging and therapeutic applications DOI

Chonglu Li,

Yida Pang,

Yuling Xu

и другие.

Chemical Society Reviews, Год журнала: 2023, Номер 52(13), С. 4392 - 4442

Опубликована: Янв. 1, 2023

Metal agents have made incredible strides in preclinical research and clinical applications, but their short emission/absorption wavelengths continue to be a barrier distribution, therapeutic action, visual tracking, efficacy evaluation.

Язык: Английский

Процитировано

93

When near-infrared fluorescence meets supramolecular coordination complexes: Challenges and opportunities of metallacycles/metallacages in precision biomedicine DOI
Yuling Xu,

You Dou,

Qian Li

и другие.

Coordination Chemistry Reviews, Год журнала: 2023, Номер 493, С. 215320 - 215320

Опубликована: Июль 7, 2023

Язык: Английский

Процитировано

24

Responsive materials based on coordination bonds DOI Creative Commons
Shi‐Yi Chen, Zihan Zhao, Cheng‐Hui Li

и другие.

Deleted Journal, Год журнала: 2023, Номер 1(2)

Опубликована: Сен. 4, 2023

Abstract Responsive materials can respond to different external stimuli by changing their chemical or/and physical properties, thus being useful for various applications such as drug delivery, bioimaging, actuators, and sensors. A common strategy constructing responsive is introduce dynamic covalent bonds or noncovalent interactions into polymer systems. Compared with other bonds, coordination have the peculiarity that bond strength dissociation rate be tuned a greater extent. Such tunability makes uniquely advantageous in stimuli‐responsive materials. Herein, we summarize recent progress of based on are classified seven categories, is, thermo‐responsive, photo‐responsive, electro‐responsive, mechano‐responsive, chemo‐responsive, pH‐responsive, materials, according type stimuli. The corresponding mechanism, design strategy, research status each category comprehensively summarized. Finally, prospects challenges development discussed.

Язык: Английский

Процитировано

24

Cage‐To‐Cage Transformations in Self‐Assembled Coordination Cages Using “Acid/Base” or “Guest Binding‐Induced Strain” as Stimuli DOI
Vellaiyadevan Sivalingam,

Minaz Parbin,

Shobhana Krishnaswamy

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(23)

Опубликована: Апрель 3, 2024

Abstract Controlling supramolecular systems between different functional forms by utilizing acids/bases as stimuli is a formidable challenge, especially where labile coordination bonds are involved. A pair of acid/base responsive, interconvertible 1,5‐enedione/pyrylium based Pd 2 L 4 ‐type cages prepared that exhibit differential guest binding abilities towards disulfonates varied sizes. three‐state switch has been achieved, (i) weakly coordinating base induced cage‐to‐cage transformation in the first step, (ii) strongly triggered cage disassembly second and (iii) third step shows acid(strong) promoted generation initial cage, thereby completing cycle. To our surprise, specific disulfonate facilitated transformations inducing strain on assembly opening pyrylium rings cage. Through competitive study, we demonstrated superior capability octacationic pyrylium‐based over similar‐sized tetracationic These results provide reliable approach to reversibly modulate properties acid/base‐responsive self‐assembled cages.

Язык: Английский

Процитировано

10

Controlled Self-Assembly, Isomerism, and Guest Uptake/Release of Charge-Reversible Lanthanide–Organic Octahedral Cages DOI
Li‐Peng Zhou,

Xiaoshan Feng,

Shao‐Jun Hu

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(32), С. 17845 - 17855

Опубликована: Авг. 7, 2023

Charge plays a crucial role in the function of molecular and supramolecular systems, but coordination hosts capable orthogonal charge regulation remain elusive so far. In this study, we report condition-dependent self-assembly charge-reversible lanthanide–organic tetra-capped octahedral cages, i.e., [Ln6(H3L)4]6+ [Ln6L4]6–, from series lanthanide ions (Ln3+; Ln = Lu, Yb, Eu) tritopic tetradentate acylhydrazone ligand (H6L) featuring multiple deprotonation states propeller conformations. While direct under basic conditions produced mixture various ΔxΛ6–x-[Ln6L4]6– (x 0–6) stereoisomers, racemic Δ6- Λ6-[Ln6L4]6– could be exclusively obtained first Λ6-[Ln6(H3L)4]6+ neutral followed by post-assembly deprotonation. Rich isomerism on cages arising coupling between metal-centered Δ/Λ chirality conformations has been discussed based X-ray single-crystal structures C3-symmetric Δ3Λ3-Ln6L4 T-symmetric Δ6/Λ6-Ln6L4 complexes. Host–guest studies confirmed that positively charged rac-Δ6/Λ6-[Ln6(H3L)4]6+ bind anionic sulfonates, negatively rac-Δ6/Λ6-[Ln6L4]6– exhibited strong encapsulation ability toward ammonium guests, where acid/base-triggered guest uptake/release realized taking advantage reversibility cage. Moreover, photophysical revealed visible-light-sensitized guest-encapsulation-enhanced NIR emissions rac-Δ6/Λ6-Yb6L4 This work not only enriches library functional also provides promising candidate with for development smart materials.

Язык: Английский

Процитировано

19

Light-Controlled Macrocyclic Supramolecular Assemblies and Luminescent Behaviors DOI Creative Commons

Shuangqi Song,

Hengzhi Zhang,

Yu Liu

и другие.

Accounts of Materials Research, Год журнала: 2024, Номер 5(9), С. 1109 - 1120

Опубликована: Авг. 1, 2024

ConspectusIntelligent supramolecular assemblies can respond well to external stimuli such as pH, temperature, light, electricity, magnetism, and enzymes achieve not only reversible topological morphology changes assembly/disassembly processes but also special physical chemical properties, which are successfully applied biological imaging, cancer treatment, luminescent materials, anticounterfeiting, sensing, molecular switch in chemical, research fields. Among all stimuli-responsive assemblies, light-controlled have always attracted intense attention because light is a kind of clean eco-friendly energy. In this Account, we focus on formed by four types photoresponsive molecules macrocyclic hosts cucurbit[n]urils, cyclodextrins, crown ethers, their regulations materials bioimaging. The cascade between photoisomerization or photoreaction mainly include: 1) based macrocycles diarylethene. As switches, the open-ring closed-ring configurations diarylethenes be reversibly controlled tunable fluorescence resonance energy transfer (FRET) process further regulate behaviors construct intelligent response cell-imaging, multicolor luminescence systems. 2) Light-controlled spiropyran. Different from diarylethenes, spiropyran converse positive charges ring-open merocyanie (MC) state, amphiphilic easy bond with like neutral/negative ring-closed (SP) more likely self-assemble. Therefore, differentiation bonding affinities MC SP light-driven machines. 3) azobenzene, whether azobenzene modified functional guests, through host–guest interactions, behavior regulated apply catalytic activity modulation, induction microtubule (MT) assembly/disassembly, drug delivery, others. 4) anthracene, different anthracene before after photooxidation hosts, dimerization, change morphologies drive phosphorescence dual imaging construction photostimuli-driven lanthanide switch. With creation novel building units modifications molecules, consider that innovation growth should widely used material conversion, real-time cell targeted organic optoelectronic machines, photocatalysis reactions.

Язык: Английский

Процитировано

8

Constructing Ultrastable Metallo-Cages via In Situ Deprotonation/Oxidation of Dynamic Supramolecular Assemblies DOI

Pingru Su,

Wenjing Zhang, Chenxing Guo

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(33), С. 18607 - 18622

Опубликована: Авг. 11, 2023

Coordination-driven self-assembly enables the spontaneous construction of metallo-supramolecules with high precision, facilitated by dynamic and reversible metal-ligand interactions. The nature coordination, however, results in structural lability many metallo-supramolecular assembly systems. Consequently, it remains a formidable challenge to achieve reversibility stability simultaneously To tackle this issue, herein, we incorporate an acid-/base-responsive tridentate ligand into multitopic building blocks precisely construct series cages through coordination-driven self-assembly. These cagelike assemblies can be transformed their static states mild situ deprotonation/oxidation, leading ultrastable skeletons that withstand temperatures, metal ion chelators, strong acid/base conditions. This transformation provides reliable powerful approach manipulate kinetic features allows for modulation encapsulation release behaviors metallo-cages when utilizing nanoscale quantum dots (QDs) as guest molecules.

Язык: Английский

Процитировано

14

Size-controlled synthesis and near-infrared photothermal response of Cp* Rh-based metalla[2]catenanes and rectangular metallamacrocycles DOI
Ying Zhao,

Yin‐Hang Chai,

Tian Chen

и другие.

Chinese Chemical Letters, Год журнала: 2023, Номер 35(6), С. 109298 - 109298

Опубликована: Ноя. 13, 2023

Язык: Английский

Процитировано

14

Hierarchically Assembled Gigantic Fe/Co Cyanometallate Clusters Exhibiting Electron Transfer Behavior Above Room Temperature DOI Creative Commons
Ziyi Chen,

Kai‐Ping Xie,

Yue Cheng

и другие.

Advanced Science, Год журнала: 2024, Номер 11(30)

Опубликована: Июнь 14, 2024

The construction of large and complex supramolecular architectures through self-assembly is at the forefront contemporary coordination chemistry. Notwithstanding great success in various systems using anionic bridges (e.g., O

Язык: Английский

Процитировано

3

Visible light-mediated supramolecular framework for tunable CO2 adsorption DOI
Yang Tao, Chunyi Yu, Chen Gu

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 486, С. 150254 - 150254

Опубликована: Март 8, 2024

Язык: Английский

Процитировано

2