Multi stimuli-responsive photoluminescent nanocomposite of silver nanoclusters with hyperbranched polyethylenimine derivatives

Zhu, Jiali; Liu, Yi; Liu, Xunyong; Liu, Hua‐Ji; Chen, Yu

doi:10.1039/c4ra14020f

Cited by 7 publications

(2 citation statements)

References 35 publications

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“…[25] Thermoresponsive PEIs with amide end groups were also prepared, but they exhibit a relative broad phase transitions. [26,27] In our previous work, we found that introduction of oligoethylene glycol (OEG)-based dendrons to the side chain of linear polymers (polymethacrylate, polyphenylacetylene, and polypeptide) can afford them unprecedented thermoresponsiveness. [28][29][30] These dendronized polymers also exhibit advantages in forming confined microenvironments on molecular levels for efficient encapsulating and shielding of dye, proteins, and metal ions.…”

Section: Introductionmentioning

confidence: 99%

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Dendronized Hyperbranched Polyethyleneimines with Switchable Thermoresponsiveness and Encapsulation

Yao,

Liu,

Song

et al. 2023

Macro Chemistry & Physics

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Hyperbranched polyethyleneimines (PEIs) with multiple layered structures and high density of terminal amino groups have shown great potentials for applications in biomedicine, sensors, and catalysis. In this work, a kind of dendronized hyperbranched PEIs (DHPs) was synthesized by modification of PEIs with dendritic oligoethylene glycols (OEGs). These DHPs not only inherit the characteristic thermoresponsive behavior from the OEG dendrons, but also show low cytotoxicity and switchable encapsulation capacities. Their thermoresponsive behavior was found to be mainly dependent on the coverage and amphiphilicity of dendritic OEGs, solution pH, and NaCl concentration. Moreover, DHPs exhibit advantages in thermally‐switchable complexation with guest molecules because of their adjustable crowding effect from the densely packed OEG chains. In addition, these DHPs can also be used as nanoreactors, which can reduce metal ions into metal nanoparticles in a convenient way. In virtue of these peculiarities, we believe these dendronized hyperbranched PEIs with smart properties can be used as promising scaffolds in drug‐controlled release and nanoreactors.This article is protected by copyright. All rights reserved

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Section: Introductionmentioning

confidence: 99%

“…[ 25 ] Thermoresponsive PEIs with amide end groups were also prepared, but they exhibit a relative broad phase transitions. [ 26,27 ]…”

Section: Introductionmentioning

confidence: 99%

Dendronized Hyperbranched Polyethyleneimines with Switchable Thermoresponsiveness and Encapsulation

Yao,

Liu,

Song

et al. 2023

Macro Chemistry & Physics

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Stimuli‐Responsive Hybridized Nanostructures

Guan

Han

2019

Adv Funct Materials

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Through innovative nanosynthesis techniques and advanced surface‐passivation methods, diversified luminescent nanocrystals, like quantum dots, metal nanoclusters, carbon dots, and upconversion nanoparticles, are produced successfully to exhibit greatly improved performance in various applications, due to their color tunability and resistance to photobleaching. Their further hybridization with stimuli‐responsive polymers endows the resultant nanohybrids with unique smart functions, which can reversibly respond to external stimuli or environmental changes via alternation in luminescence. Due to their multifunctional properties, these responsive luminescent nanohybrids are attracting more and more interest in foundation research and promising applications recently. Here, important developments and achievements made in this emerging field are summarized to highlight the integration concepts and fabrication methods for luminescent nanohybrids, and their special responsive functions to temperature, pH, fields, and analytes. At the same time, their smart applications are also overviewed for demonstrating novel actions of responsive nanohybrids via various intelligent operations. The aim is to understand and accelerate more advanced developments in creating varied and intelligent nanosystems, and provide perspectives to promote a further revolution of smart materials and technology.

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Advances of peptides for antibacterial applications

Yan

Zhang

et al. 2021

Colloids and Surfaces B: Biointerfaces

148

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Multi stimuli-responsive photoluminescent nanocomposite of silver nanoclusters with hyperbranched polyethylenimine derivatives

Abstract: A photoluminescent nanocomposite of AgNC–PEI–TMA was multi stimuli-responsive, including toward temperature, salt, pH, and organic guest.

Cited by 7 publications

References 35 publications

Dendronized Hyperbranched Polyethyleneimines with Switchable Thermoresponsiveness and Encapsulation

Dendronized Hyperbranched Polyethyleneimines with Switchable Thermoresponsiveness and Encapsulation

Stimuli‐Responsive Hybridized Nanostructures

Advances of peptides for antibacterial applications

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