Organogelating and narcissistic self-sorting behaviour of non-preorganized oligoamides

Zheng, Kun; Wang, Huai-Zhen; Chow, Hak‐Fun

doi:10.1039/c9sc00861f

Cited by 9 publications

(5 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When different molecules self-assemble, one of three outcomes may result: social sorting, , where a statistical distribution of products is observed, narcissistic sorting, − where components self-recognize and generate homoleptic architectures, or integrative self-sorting, − during which all components are assimilated into a single product. Other sorting modes have recently been discovered, including biased sorting regimes and those driven by kinetic trapping, stereochemical differences, , or template-induced sorting …”

mentioning

confidence: 99%

Narcissistic, Integrative, and Kinetic Self-Sorting within a System of Coordination Cages

Rizzuto

Nitschke

2020

J. Am. Chem. Soc.

View full text Add to dashboard Cite

Many useful principles of self-assembly have been elucidated through studies of systems where multiple components combine to create a single structure. More complex systems, where multiple product structures self-assemble in parallel from a shared set of precursors, are also of great interest, as biological systems exhibit this behavior. The greater complexity of such systems leads to an increased likelihood that discrete species will not be formed, however. Here we show how the kinetics of self-assembly govern the formation of multiple metal−organic architectures from a mixture of five building blocks, preventing the formation of a discrete structure of intermediate size. By varying ligand symmetry, denticity, and orientation, we explore how five distinct polyhedraa tetrahedron, an octahedron, a cube, a cuboctahedron, and a triangular prismassemble in concert around Co II template ions. The underlying rules dictating the organization of assemblies into specific shapes are deciphered, explaining the formation of only three discrete entities when five could form in principle.

show abstract

mentioning

confidence: 99%

Narcissistic, Integrative, and Kinetic Self-Sorting within a System of Coordination Cages

Rizzuto

Nitschke

2020

J. Am. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…However, this increasing M w effect rapidly levels off once the DP value is >20. 30,31 Hence, in the case of isomeric polymers where the DP value is normally >50, the difference in the gelation strength is not due to their M w difference but originated from the difference in their molecular structure. The polydispersity index values were also determined to be 3.3 and 2.0, respectively, for P-1 and P-2.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Differential Metal Ion-Sensing Properties of Isomeric Crystalline Polyacylhydrazone Organogelators

Wang

Chow

2020

ACS Appl. Polym. Mater.

Self Cite

View full text Add to dashboard Cite

Two isomeric polyacylhydrazones P-1 and P-2 were prepared by dynamic covalent chemistry. Due to the presence of aromatic moieties and intramolecular hydrogen bonds in the backbone, both polymers exhibited very high crystallinity. Furthermore, they had shown to be very strong physical gelators for aromatic solvents. Upon interacting with metal ions, the two polymers demonstrated different yet specific metal ion-responsive properties such as gel-to-sol transition, gel strength reinforcement, and/or quenching/enhancement of fluorescence intensity. Based on solid-state NMR and powder X-ray diffraction data, the metal ion binding mechanisms were elucidated and a model was proposed to rationalize the differences in their metal ion-responsive properties. This work showed that these crystalline polyacylhydrazone polymers possess very rich supramolecular and stimuliresponsive properties and can be used for metal ion-sensing applications via visual sol−gel transitions.

show abstract

“…[18,19] In synthetic polymers, careful design DOI: 10.1002/macp.202300151 and systematic placements of the interacting functional groups within the polymer structures have been shown to enable highfidelity self-sorting. [20] Polysiloxanes (Si─O─Si backbone containing polymers) are highly valued synthetic polymers used across many specialty applications such as Cosmetics, Agriculture, Industrial, Automotive, Aerospace, Healthcare, and Constructions, amounting to ≈15b US $ market size globally. [21][22][23] Many of these applications rely on the controlled segmental mobilities at range of different application temperatures, shear, and processing conditions.…”

Section: Introductionmentioning

confidence: 99%

“…[ 18,19 ] In synthetic polymers, careful design and systematic placements of the interacting functional groups within the polymer structures have been shown to enable high‐fidelity self‐sorting. [ 20 ]…”

Section: Introductionmentioning

confidence: 99%

Microstructure‐Driven Self‐Sorting of Chemically Indistinguishable Side Chains in Pre‐Programmed Alkyl Siloxanes Leading to Amplification of Mechanical Properties

Negi,

Hebbar,

Dalavoy

et al. 2023

Macro Chemistry & Physics

View full text Add to dashboard Cite

A unique microstructure‐driven self‐sorting of chemically indistinguishable side chains in alkyl siloxanes is reported for the first time. The difference in cooperativity among the side alkyl chains caused by the variation in backbone microstructure is the key to drive this self‐sorting. The study also reveals that while alkyl chains of random and fully blocked siloxane discriminate each other, the alkyl chains of partially blocked siloxane can form crystals with both polymers resulting in reinforcement of the mechanical property of the blends.This article is protected by copyright. All rights reserved

show abstract

Organogelating and narcissistic self-sorting behaviour of non-preorganized oligoamides

Abstract: Depending on the length (n) and the nature of the end group (X), structurally flexible oligoamides OAT and OATe were found to be good organogelators and their mixtures showed narcissistic self-sorting in both the xerogel and wet gel states.

Cited by 9 publications

References 37 publications

Narcissistic, Integrative, and Kinetic Self-Sorting within a System of Coordination Cages

Narcissistic, Integrative, and Kinetic Self-Sorting within a System of Coordination Cages

Differential Metal Ion-Sensing Properties of Isomeric Crystalline Polyacylhydrazone Organogelators

Microstructure‐Driven Self‐Sorting of Chemically Indistinguishable Side Chains in Pre‐Programmed Alkyl Siloxanes Leading to Amplification of Mechanical Properties

Contact Info

Product

Resources

About