Supramolecular self-assembly of three-dimensional polyaniline and polypyrrole crystals
21
Citation
19
Reference
10
Related Paper
Citation Trend
Abstract:
Herein, we first report a novel approach for preparing 3D π-π stacked crystals of polyaniline and polypyrrole and show how they self-assemble in a suitable solution environment. 3D crystals of polyaniline and polypyrrole show high charge-transport properties of 130 S cm(-1) and 150 S cm(-1), respectively. Remarkably, the 3D crystals of polyaniline obtain excellent anisotropic conductivity.Keywords:
Polypyrrole
Self-assembly is a powerful tool for constructing supramolecular materials for many applications, ranging from energy harvesting to biomedicine. Among the methods to prepare supramolecular materials for biomedical applications, enzyme-instructed self-assembly (EISA) has several advantages. Herein, the unique properties and advantages of EISA in preparing biofunctional supramolecular nanomaterials and hydrogels from peptides are highlighted. EISA can trigger molecular self-assembly in situ. Therefore, using overexpression enzymes in disease sites, supramolecular materials can be formed in situ to improve the selectivity and efficacy of the treatment. The precursor may be involved during the EISA process, and it is actually a two-component self-assembly process. The precursor can help to stabilize the assembled nanostructures of hydrophobic peptides formed by EISA. More importantly, the precursor may determine the outcome of molecular self-assembly. Recently, it was also observed that EISA can kinetically control the peptide folding and morphology and cellular uptake behavior of supramolecular nanomaterials. With the combination of other methods to trigger molecular self-assembly, researchers can form supramolecular nanomaterials in a more precise mode and sometimes under spatiotemporal control. EISA is a powerful and unique methodology to prepare supramolecular biofunctional materials that cannot be generated from other common methods.
Cite
Citations (252)
Nanomaterials
Cite
Citations (45)
Self-healing materials emerge as a fascinating class of materials important for various technological applications. However, achieving the synergistic characteristics of high conductivity, room-temperature self-healing ability, and decent mechanical properties still remains a critical challenge. Here we develop for the first time a hybrid gel based on self-assembled supramolecular gel and nanostructured polypyrrole that synergizes the dynamic assembly/disassembly nature of metal–ligand supramolecule and the conductive nanostructure of polypyrrole hydrogel and exhibits features of high conductivity (12 S m–1), appealing mechanical and electrical self-healing property without any external stimuli, and enhanced mechanical strength and flexibility. The attractive characteristics of the hybrid gel are further demonstrated by a flexible yet self-healable electrical circuit. Our work shows the great potential of self-healing hybrid gel system in flexible electronics and provides a useful strategy to design multifunctional self-healing materials.
Polypyrrole
Self-healing material
Cite
Citations (389)
Fabricating well-defined and stable nanoparticle arrays and crystals in a controlled fashion receives growing attention in nanotechnology owing to the potential application in optoelectronic devices, biological sensors, and photonic structures. The research described in this thesis aims to construct stable, ordered and functional 2D and 3D nanoparticle structures. Molecular recognition abilities have been exploited by using a combination of supramolecularly directed self-assembly of receptor-functionalized nanoparticles and top-down nanofabrication techniques. Noncovalent host-guest nanoparticle assembly is highly versatile. It involves specific multivalent interactions, in which the nanoparticle-surface or the inter-particle binding strength can be fine-tuned by introducing competitive interactions. The additional advantage is the possibility for error correction. Host or guest molecules are attached to the surface of the nanoparticles to control the assembly of functionalized nanoparticles to self-assembled monolayers (SAMs) via specific host-guest interactions in a layer-by-layer (LbL) assembly methodology. Top-down nanofabrication schemes were combined with supramolecular nanoparticle assembly to form stable and ordered nanoparticle architectures on surfaces, other interfaces, and as free-standing structures.
Molecular Recognition
Cite
Citations (0)
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Regenerative Medicine
Cite
Citations (0)
Abstract During the past few decades, the construction of macrocyclic molecules/complexes has attracted considerable attention because of their wide applications in sensing, catalysis, molecular machine, drug delivery, etc. Coordination‐driven self‐assembly has proven to be a simple yet highly efficient approach for the preparation of various supramolecular metallacycles with the predetermined shapes and sizes as well as the distribution and total number of functional groups. Since the significant progress has been made during the last few years in the field of coordination‐driven self‐assembly, it is time to summarize the recent development in coordination‐driven self‐assembly of functionalized supramolecular metallacycles. In this review, we will highlight some recent advances concerning the preparation of functionalized supramolecular metallacycles via coordination‐driven self‐assembly between the year 2010–2018. In addition, the properties and the applications of these metallacycles in the areas of photo‐ and electrochemistry, sensing, supramolecular gel, biological applications, etc. will be also discussed.
Coordination complex
Cite
Citations (17)
In reality, magnetic interactions always compete with van der Waals forces (and possibly other types of forces), which become increasingly important with decreasing particle size. Self-assembly also poses a number of substantial intellectual challenges. Molecular self-assembly can be achieved by using three common approaches which includes self-assembly through physiosorption (patterned organic monolayers), self-assembly through chemisorption, and self-assembly through metal ion-ligand interactions. This chapter briefly outlines the important applications specific to the supramolecules and self-assembled nanostructures. Supramolecular chemistry and molecular self-assembly processes, in particular, have been applied to the development of new materials. It is revealed using analytical modelling that the fundamental electrical, mechanical, and magnetic interactions at the nanoscale level in the nanomotor system excellently agrees with experimental results and provides critical understanding for designing metallic nanoelectro-mechanical systems. The chapter also discusses the applications of self-assembled/supramolecular structures in following fields: catalysis, medicine, data storage, green chemistry, and sensors.
Nanomaterials
Chemisorption
Nanomechanics
Cite
Citations (0)
Past decades have witnessed rapidly growing interest in nanometer-sized structures, which have great potential to be used in a variety of applications, such as electronics, sensors, coatings, and biomaterials. Supramolecular chemistry in particular has been actively applied to the development of such materials. Nanostructures can readily be accessed using bottom-up supramolecular approaches as they are composed of small molecules (supramolecular building blocks) requiring fewer steps to synthesize. Among various types of supramolecular building blocks, rod–coil molecules, due to their anisotropic molecular shape, are well-suited for tailoring nanostructural properties such as size and shape. This Feature Article highlights the self-assembly of rod–coil molecules in aqueous solution and introduces an emerging approach to the application of rod–coil nanostructures in biomaterials applications.
Nanometre
Cite
Citations (122)
The recent progress in functionalized LB films and supramolecular gels varies and occupies various fields. Self-assembly technique is playing an important role in preparing well-defined multilevel nanostructures and the functionalized nanomaterials with the designed and controlled properties. In this chapter, various kinds of functionalized LB films and supramolecular gels, including gold nanoparticles, inorganic-organic hybrid composites, and graphene oxide nanocomposites, have been demonstrated and analyzed. We show main research contributions in recent years in two sections: preparation and self-assembly of some functionalized LB films and preparation and self-assembly of some functionalized supramolecular gels. The above research work may give the potential perspective for the design and preparation of new self-assembly nanomaterials. Future research on preparation of LB films and supramolecular gels will depend on the novel applications and special nanostructures in order to produce novel functional nanomaterials and devices.
Nanomaterials
Supramolecular assembly
Cite
Citations (2)
Fabrication of nano-sized objects is one of the most important issues in nanoscience and nanotechnology. Soft nanomaterials with flexible properties have been given much attention and can be obtained through bottom-up processing from functional molecules, where self-assembly based on supramolecular chemistry and designed assembly have become crucial processes and techniques. Among the various functional molecules, dyes have become important materials in certain areas of nanotechnology and their self-assembling behaviors have been actively researched. In this short review, we briefly introduce recent progress in self-assembly of optical molecules and dyes, based mainly on supramolecular concepts. The introduced examples are classified into four categories: self-assembly of (i) low-molecular-weight dyes and (ii) polymeric dyes and dye self-assembly (iii) in nanoscale architectures and (iv) at surfaces.
Nanomaterials
Supramolecular assembly
Cite
Citations (22)