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Amphiphilicity Regulation of Ag(I) Nanoclusters: Self-Assembly and its Application as Luminescent Probe
摘要： Research on the self-assembly of various amphiphilic molecules is relatively hot and of great significance. However, new kind of metal nanoclusters (NCs) based amphiphilic molecule has rarely been explored. Herein, hydrophobic cations 1-hexadecyl-3-methylimidazolium (C16mim+) were chosen to modify hydrophilic (NH4)6[Ag6(mna)6] (Ag6-NCs, H2mna = 2-mercaptonicotinic acid) and Ag6@C16mim-NCs were obtained. Ag6@C16mim-NCs performed a thermotropic liquid crystal and thermofluorescence property. Moreover, the Ag6@C16mim-NCs exhibits benign amphiphilicity which could self-assembly into ordered nanosheets and nanorods aggregates in water/dimethyl sulfoxide (DMSO) binary solvents while single Ag6-NCs does not. Meanwhile, the Ag6@C16mim-NCs also performs aggregation-induced emission (AIE) property owing to the restriction of intramolecular vibration of the capping ligands. Furthermore, it can be found that the luminescent aggregates could detect arginine selectively with the detection limit (DL) at 28 uM. This study introduced a new kind of metal NCs-based amphiphilic molecule in a supramolecular self-assembly field and make it a candidates as optical materials in applied research.
关键词： Silver (I) nanocluster,aggregation-induced emission,self-assembly,amphiphilicity,sensor
更新于2025-09-19 17:15:36
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Effect of surface amphiphilic property of azobenzene self-assembled electrode materials on properties of supercapacitors
摘要： In this report, novel azobenzene self-assembled complexes (azo-Cn, n = 8, 12, 16) were used as an electrode material for pseudo-capacitors. The as-prepared azo-Cn exhibited a good reversible redox process and possessed a specific capacitance as high as 221.0 F g?1 at 10 mV s?1. However, with the value n increased from 8 to 16, the specific capacitances of azo-Cn electrode materials decreased. In order to study the reasons, the effect of surface amphiphilic property of azobenzene self-assembled electrode materials on the properties of supercapacitors was studied and the results showed that the capacitive behaviors of azo-Cn could be greatly improved by better surface hydrophilic properties and azo-C8 with good supercapacitive characteristics could be the potential ideal electrode materials for low-cost and high-efficiency electrochemical supercapacitors.
关键词： Supercapacitors,Azobenzene,Amphiphilicity,Self-assembly
更新于2025-09-19 17:13:59
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Accumulated plasmonic effects of gold nanoparticlea??decorated PEGylated graphene oxides in organic light-emitting diodes
摘要： Amphiphilic Au nanoparticle-decorated PEGylated graphene oxides (Au@PEG-GO) are used to construct multiple plasmonic nanostructures for enhancing the performance of organic light-emitting diodes (OLEDs). Because of the long side-chains of the Au@PEG-GO nanocomposites, the nanoparticles can be well dispersed both in organic and aqueous solvents, allowing them to be incorporated readily into the buffer layers, such as poly(3,4-ethylenedioxythiophene) : polystyrenesulfonate (PEDOT:PSS) and the organic photoactive layers within OLEDs during the soultion processes. Herein, the Au@PEG-GO nanocomposites are blended into either the PEDOT:PSS or the emissive layer of OLEDs to trigger surface plasmonic effects, thereby improving the device efficiencies. The current efficiencies are improved by ca. 20% for both cases. More importantly, the simultaneous addition of the Au@PEG-GO nanocomposites into both layers leads to even pronounced plasmonic effects. Under the optimized condition, the current efficiency is enhanced by up to 38%, suggesting the plasmonic fields from both layers attributed to the device enhancement. We anticipate that the accumulated plasmonic effects originating from the multiple plasmonic nanostructures will open up new avenues for improving the performance of various solution-processed optoelectronic devices involving organic dyes.
关键词： Polymer,OLED,Graphene oxide,Amphiphilicity,Nanoparticle,Plasmonic
更新于2025-09-19 17:13:59