Stimuli-Responsive Polydiacetylene Based on the Self-Assembly of a Mercury-Bridged Macrocyclic Diacetylene Dimer

Bae, Kwangmin; Lee, Dong Geol; Khazi, Mohammed Iqbal; Kim, Jong−Man

doi:10.1021/acs.macromol.1c02583

Cited by 12 publications

(8 citation statements)

References 69 publications

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Section: Forces Inducing Self-assembly Of Macrocyclesmentioning

confidence: 99%

“…In another instance, macrocyclic diacetylene was substituted by cytosine ( 38 , Figure ). The system was then introduced to Hg ions and found to form a bridge between two macrocycles and allowed those to aggregate further . A covalent polymeric ene-yne backbone comprising the intercalated metal coordination is generated during UV-induced polymerization with robust tubular channel-like topologies.…”

Section: Forces Inducing Self-assembly Of Macrocyclesmentioning

confidence: 99%

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Self-assembled Macrocycles: Design Strategies and Emerging Functions

Talukdar,

Kumar,

Gole

2023

Crystal Growth & Design

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Molecular self-assembly is an essential process in biological systems to perform sophisticated functions. Along the same line, development of artificial self-assembled systems has considerable interest in emulating biological functions and developing new materials. While several small molecules have been used mainly as a building block for self-assembly to obtain a desirable function, very recently, shape-persistent, rigid macrocycles emerged as potential monomers due to their tunable cavity size that does not collapse upon self-assembly. This perspective focuses on emerging aspects of self-assembled macrocycles. First, we have highlighted some strategies and prominent noncovalent interactions that drive the self-assembly process. This overview concludes with a careful survey of the current trend and emerging applications of these kinds of systems with a focus on molecular recognition, catalysis, separation, transportation, soft materials, drug delivery, and sensing. It covers some of the most recent and important advances in the design and application of self-assembled macrocycles and provides a perspective for their further development.

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Section: Forces Inducing Self-assembly Of Macrocyclesmentioning

confidence: 99%

Section: Forces Inducing Self-assembly Of Macrocyclesmentioning

confidence: 99%

Self-assembled Macrocycles: Design Strategies and Emerging Functions

Talukdar,

Kumar,

Gole

2023

Crystal Growth & Design

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“…Reaching inner pore diameters that are smaller and better defined, more compatible with molecular dimensions, requires other strategies that make use of more sophisticated molecules and directional noncovalent interactions. For instance, covalent macrocycles can be made to orderly stack on top of each other, often aided by peripheral H-bonding units, to form cylindrical structures with well-defined pores (Figure a, left). − Alternatively, relatively flexible linear oligomers can be made to fold intramolecularly into helical structures ( i . e ., foldamers; Figure a, right), which can also present available internal channels.…”

Section: Introductionmentioning

confidence: 99%

Stacked or Folded? Impact of Chelate Cooperativity on the Self-Assembly Pathway to Helical Nanotubes from Dinucleobase Monomers

González-Sánchez,

Mayoral,

Vázquez-González

et al. 2023

J. Am. Chem. Soc.

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Self-assembled nanotubes exhibit impressive biological functions that have always inspired supramolecular scientists in their efforts to develop strategies to build such structures from small molecules through a bottom-up approach. One of these strategies employs molecules endowed with self-recognizing motifs at the edges, which can undergo either cyclization−stacking or folding−polymerization processes that lead to tubular architectures. Which of these self-assembly pathways is ultimately selected by these molecules is, however, often difficult to predict and even to evaluate experimentally. We show here a unique example of two structurally related molecules substituted with complementary nucleobases at the edges (i.e., G:C and A:U) for which the supramolecular pathway taken is determined by chelate cooperativity, that is, by their propensity to assemble in specific cyclic structures through Watson−Crick pairing. Because of chelate cooperativities that differ in several orders of magnitude, these molecules exhibit distinct supramolecular scenarios prior to their polymerization that generate self-assembled nanotubes with different internal monomer arrangements, either stacked or coiled, which lead at the same time to opposite helicities and chiroptical properties.

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“…1(a)), where m and n represent the spacer group and the terminal alkyl chain around the DA units, respectively. We showed that the columnar packing of HBC cores can help align the DA-containing side chains along the column and get polymerized [26][27][28][29][30] to give conjugated poly(eneyne) chains as conducting channels for transistor application. The position of the DA unit along the alkyl chain nevertheless appeared to affect the polymerization profoundly.…”

Section: Introductionmentioning

confidence: 99%