scholarly journals Self-Assembly of Metal Nanoclusters for Aggregation-Induced Emission

2019 ◽  
Vol 20 (8) ◽  
pp. 1891 ◽  
Author(s):  
Jianxing Wang ◽  
Xiangfang Lin ◽  
Tong Shu ◽  
Lei Su ◽  
Feng Liang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Self Assembly ◽  
The Self ◽  
Color Purity ◽  
Metal Nanoclusters ◽  
Aggregation Induced Emission ◽  
Synthetic Strategy ◽  
Emission Color ◽  
Optical Applications ◽  
First Time

Aggregation-induced emission (AIE) is an intriguing strategy to enhance the luminescence of metal nanoclusters (NCs). However, the morphologies of aggregated NCs are often irregular and inhomogeneous, leading to instability and poor color purity of the aggregations, which greatly limit their further potential in optical applications. Inspired by self-assembly techniques, manipulating metal NCs into well-defined architectures has achieved success. The self-assembled metal NCs often exhibit enhancing emission stability and intensity compared to the individually or randomly aggregated ones. Meanwhile, the emission color of metal NCs becomes tunable. In this review, we summarize the synthetic strategies involved in self-assembly of metal NCs for the first time. For each synthetic strategy, we describe the self-assembly mechanisms involved and the dependence of optical properties on the self-assembly. Finally, we outline the current challenges to and perspectives on the development of this area.

A dissipative particle dynamics simulation study on phase diagrams for the self-assembly of amphiphilic hyperbranched multiarm copolymers in various solvents

Soft Matter ◽  
2017 ◽  
Vol 13 (36) ◽  
pp. 6178-6188 ◽  
Author(s):  
Haina Tan ◽  
Chunyang Yu ◽  
Zhongyuan Lu ◽  
Yongfeng Zhou ◽  
Deyue Yan
Keyword(s):  
Phase Diagrams ◽  
Simulation Study ◽  
Self Assembly ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
The Self ◽  
Dynamics Simulation ◽  
Dynamics Simulations ◽  
First Time ◽  
Dissipative Particle Dynamics Simulation

This work discloses for the first time the self-assembly phase diagrams of amphiphilic hyperbranched multiarm copolymers in various solvents by dissipative particle dynamics simulations.

Size-tunable fluorescent dendrimersomes via aggregation-induced emission

2022 ◽  
Author(s):  
Marilyne Bélanger-Bouliga ◽  
Brandon Andrade-Gagnon ◽  
Diep Thi Hong Nguyen ◽  
Nazemi Ali
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Third Generation ◽  
Thermodynamic Control ◽  
Aggregation Induced Emission ◽  
Generation Number ◽  
Dendrimer Generation

Tetraphenylethylene-functionalized amphiphilic Janus dendrimers of up to third generation are synthesized. Their self-assembly has been studied under kinetic and thermodynamic control. By varying the dendrimer generation number and the self-assembly...

scholarly journals Development of the Morphology and the Band Gap Energy of Co–Si Nanofibers by Inserting Zirconium and Titanium with Dual Anions Intercalation Process

2019 ◽  
Vol 9 (22) ◽  
pp. 4775 ◽  
Author(s):  
Osama Saber ◽  
Nagih M. Shaalan ◽  
Aya Osama ◽  
Adil Alshoaibi
Keyword(s):  
Optical Properties ◽  
Band Gap ◽  
Optical Materials ◽  
Band Gap Energy ◽  
Gap Energy ◽  
Intercalation Process ◽  
Trivalent Cations ◽  
Optical Applications ◽  
Double Hydroxides ◽  
First Time

The plate-like structure is the most familiar morphology for conventional layered double hydroxides (LDHs) in case their structures consist of divalent and trivalent cations in their layers. In this study, nanofibers and nanoneedles of Co–Si LDHs were prepared for the first time. By the inclusion of zirconium inside the nanolayers of LDH structures, their plates were formed and transformed to nanofibers. These nanofibers were modified by the insertion of titanium to build again plate-like morphology for the LDH structure. This morphology controlling was studied and explained by a dual anions intercalation process. The optical properties of Co–Si LDHs indicated that the incorporation of zirconium within their nanolayers decreased the band gap energy from 4.4 eV to 2.9 eV. Following the same behavior, the insertion of titanium besides zirconium within the nanolayers of Co–Si LDHs caused a further reduction in the band gap energy, which became 2.85 eV. Although there is no data for the optical properties of Co–Si LDHs in the literature, it is interesting to observe the low band gap energy for Co–Si LDHs to become more suitable for optical applications. These results concluded that the reduction of the band gap energy and the formation of nanofibers introduce new optical materials for developing and designing optical nanodevices.

A self-assembly based on a hydrogel interface: facile, rapid, and large-scale preparation of colloidal photonic crystals

2020 ◽  
Vol 4 (8) ◽  
pp. 2409-2417
Author(s):  
Mengfan Wu ◽  
Chuyan Zhang ◽  
Fujing Wei ◽  
Huifang An ◽  
Xiaqing Wang ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Self Assembly ◽  
Large Scale ◽  
The Self ◽  
Colloidal Photonic Crystals ◽  
Large Scale Preparation ◽  
Scale Preparation ◽  
First Time

This is the first time that a hydrogel interface has been used as an assembly interface for the self-assembly of photonic crystals with excellent performances.

Directed arrangement of siRNA via polymerization-induced electrostatic self-assembly

2020 ◽  
Vol 56 (16) ◽  
pp. 2411-2414
Author(s):  
Liangliang Shen ◽  
Yahui Li ◽  
Qunzan Lu ◽  
Xiaoliang Qi ◽  
Xuan Wu ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Short Interfering Rna ◽  
Assembly Behavior ◽  
Interfering Rna ◽  
First Time

Polymerization-induced electrostatic self-assembly (PIESA) is conducted to mediate the self-assembly behavior of short interfering RNA (siRNA) for the first time.

scholarly journals Probing the self-assembly and stability of oligohistidine based rod-like micelles by aggregation induced luminescence

2016 ◽  
Vol 14 (24) ◽  
pp. 5574-5579 ◽  
Author(s):  
Hendrik Frisch ◽  
Daniel Spitzer ◽  
Mathias Haase ◽  
Thomas Basché ◽  
Jens Voskuhl ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Aggregation Induced Emission

The synthesis and self-assembly of a new C2-symmetric oligohistidine amphiphile equipped with an aggregation induced emission luminophore is reported.

Tuning Morphology and Fluorescence of Aggregated Nanostructures of Derived Perylene Diimide Molecules

2008 ◽  
Vol 8 (4) ◽  
pp. 2005-2010
Author(s):  
Xiaorong He ◽  
Weidong Zhou ◽  
Yuliang Li ◽  
Xiaofeng Liu ◽  
Cuihong Li ◽  
...  
Keyword(s):  
Optical Properties ◽  
Self Assembly ◽  
Water Soluble ◽  
The Self ◽  
Perylene Diimide ◽  
Confocal Raman Microscopy ◽  
Sem Images ◽  
Confocal Raman ◽  
Chloride Salts ◽  
Scanning Electron

In this paper, we report on the self-assembly of water-soluble N,N′-di(N,N′-dimethyl-dodecane-1,12-diamide)-perylene-3,4,9,10-tetracarboxylic diimide (PDDoAM) in formic acid and chloride salts for producing varied nano-aggregates with different optical properties. Interestingly, the self-assembly can lead to nanocubic, microsheet and “tower-like” nanostructures respectively, as demonstrated by Scanning Electron Microscopy (SEM) images. The optical properties of molecular aggregates were investigated by means of Confocal Raman Microscopy, indicating the morphologies and fluorescence of these nanomaterials are dependent on acids, acid concentrations and casting methods.

Noble metal nanoclusters-decorated NiFe layered double hydroxide superstructure as nanoreactors for selective hydrogenation catalysis

Nanoscale ◽  
2020 ◽  
Vol 12 (34) ◽  
pp. 17780-17785
Author(s):  
Hao Zhang ◽  
Xiaoying Guo ◽  
Xun Wang
Keyword(s):  
Selective Hydrogenation ◽  
Self Assembly ◽  
Building Blocks ◽  
The Self ◽  
Nanometer Scale ◽  
Metal Nanoclusters ◽  
The Core ◽  
Core Issue ◽  
Double Hydroxide ◽  
Noble Metal Nanoclusters

The ability to conduct the self-assembly of nanometer-scale building blocks is the core issue in achieving “bottom-up” fabrications of desired superstructures.

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