Investigation on the assembled structure–property correlation of supramolecular hydrogel formed from low-molecular-weight gelator

Wang, Yujiang; Tang, Li‐Ming; Yu, Jian

doi:10.1016/j.jcis.2007.11.017

Cited by 41 publications

(19 citation statements)

References 55 publications

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“…2, the formed gel is opaque opalescent colloid. The critical gelation concentrations for complex 3 in different solvents are also tested, and which are comparable with the reported gelators [39,40]. For alcohols, the critical gelation concentrations are almost the same around 20 mg ml À1 , but for aromatic solvents, they are varied from 19 (xylene) to 96 (toluene) mg ml À1 , which may be partially ascribed to the different solubility of the solvents.…”

Section: Gel Forming Propertiessupporting

confidence: 76%

Hydrogen-bonding A(LS)2-type low-molecular-mass gelator and its thermotropic mesomorphic behavior

Hou

Wang

Zang

et al. 2009

Journal of Colloid and Interface Science

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Section: Gel Forming Propertiessupporting

confidence: 76%

Hydrogen-bonding A(LS)2-type low-molecular-mass gelator and its thermotropic mesomorphic behavior

Hou

Wang

Zang

et al. 2009

Journal of Colloid and Interface Science

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“…85 As the cooling rate determines how fast the system deviates from the equilibrium state, it also affects the nucleation kinetics. 87 We note that as the pH and electrolyte have a strong influence on the Zeta potential of nano-crystallites, the equilibrium concentrations of hydrogels are also pH and/or electrolyte concentration dependent. 86 When the cooling rate was higher than this value, the nucleation and fiber growth was controlled by the chemical potential (thermodynamic driving force) between the crystalline phase and the solution phase.…”

Section: Engineering Of Single Crystal Networkmentioning

confidence: 86%

Crystal networks in supramolecular gels: formation kinetics and mesoscopic engineering principles

Lin

et al. 2015

CrystEngComm

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For many functional materials, the functionality that is critical to macroscopic behavior begins to manifest itself at the mesoscale. To control the macroscopic properties, knowledge of the structural characteristics in relation to the properties of the mesoscopic materials is crucial. To a large extent, the mesoscopic structure of the crystal networks in supramolecular materials determines the materials' macroscopic properties. This review therefore aims to provide a comprehensive survey of the structural characteristics of crystal networks in correlation with the macroscopic properties/performance and the formation mechanisms of supramolecular gels. In the mesoscopic engineering of soft materials, a strategy constituting a materials engineering triangle is typically adopted. This is applied to engineer soft materials based on a thorough understanding of the correlation between the structure and performance of the materials, as well as the formation kinetics. First, the hierarchy of the crystal network structures, such as the crystal network and domain network, determine the basic key features of crystal networks. Concerning the formation mechanism of the crystal networks, herein, the basic mechanisms of crystal nucleation and growth are first reviewed, and then the review is further extended to the formation of multi-level crystal networks. Consequently, the engineering of mesoscopic materials can be implemented by controlling the crystal network formation. Practical strategies include the application of various stimuli, such as additives, sonication, seeding, and thermodynamic driving force, which allow the tuning and reconstructing of the mesoscopic network structure of supramolecular gels, which leads to a controllable performance of the supramolecular materials. In general, gaining a comprehensive understanding of crystal networks will help in identifying new and robust approaches to engineer and functionalize supramolecular materials in the long term. CrystEngCommThis journal is

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“…In a recent work, wang et al also reported that the fibers of a gelator prepared from 1,2,4,5‐benzene tetracarboxylic acid and 4‐hydroxypyridine formed in water became thinner with increase in cooling rate. More interestingly, thinner fibers were obtained when ultrasonic treatment was applied during the gel formation 75…”

Section: Strategies For Engineering the Micro/nanostructure Of Fibmentioning

confidence: 99%

Architecture of Supramolecular Soft Functional Materials: From Understanding to Micro‐/Nanoscale Engineering

2010

Adv Funct Materials

163

246

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This article gives an overview of the current progress of a class of supramolecular soft materials consisting of fiber networks and the trapped liquid. After discussing the up‐to‐date knowledge on the types of fiber networks and the correlation to the rheological properties, the gelation mechanism turns out to be one of the key subjects for this review. In this concern, the following two aspects will be focused upon: the single fiber network formation and the multi‐domain fiber network formation of this type of material. Concerning the fiber network formation, taking place via nucleation, and the nucleation‐mediated growth and branching mechanism, the theoretical basis of crystallographic mismatch nucleation that governs fiber branching and formation of three‐dimensional fiber networks is presented. In connection to the multi‐domain fiber network formation, which is governed by the primary nucleation and the subsequent formation of single fiber networks from nucleation centers, the control of the primary nucleation rate will be considered. Based on the understanding on the the gelation mechanism, the engineering strategies of soft functional materials of this type will be systematically discussed. These include the control of the nucleation and branching‐controlled fiber network formation in terms of tuning the thermodynamic driving force of the gelling system and introducing suitable additives, as well as introducing ultrasound. Finally, a summary and the outlook of future research on the basis of the nucleation‐growth‐controlled fiber network formation are given.

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Investigation on the assembled structure–property correlation of supramolecular hydrogel formed from low-molecular-weight gelator

Cited by 41 publications

References 55 publications

Hydrogen-bonding A(LS)2-type low-molecular-mass gelator and its thermotropic mesomorphic behavior

Hydrogen-bonding A(LS)2-type low-molecular-mass gelator and its thermotropic mesomorphic behavior

Crystal networks in supramolecular gels: formation kinetics and mesoscopic engineering principles

Architecture of Supramolecular Soft Functional Materials: From Understanding to Micro‐/Nanoscale Engineering

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