Amphiphilic Block Copolymer Micelles in Selective Solvents: The Effect of Solvent Selectivity on Micelle Formation

Kumar, Labeesh; Horechyy, Andriy; Bittrich, Eva; Nandan, Bhanu; Uhlmann, Petra; Fery, Andreas

doi:10.3390/polym11111882

Cited by 24 publications

(35 citation statements)

References 30 publications

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“…The low solubility of P4VP favors aggregation of the P4VP blocks to define the dense core of the micelles, whereas the soluble PS blocks form the corona with a significantly lower segment density. [9,13] Empty micelles have been prepared from three different PS-b-P4VP BCPs with varying composition but comparable overall molecular weights (S 58 V 42 157 , S 65 V 35 131 , and S 85 V 15 154 ; subscripts: weight fraction of the respective block in wt %; superscript: number average molecular weight in kg mol À 1 ). [Zn(L)]@BCP micelles were prepared by heating the respective BCP and [Zn(L)] (100 : 1 (w/w)) for 2 h under reflux in toluene.…”

Section: Resultsmentioning

confidence: 99%

Self‐Assembled Fluorescent Block Copolymer Micelles with Responsive Emission

et al. 2022

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Responsive fluorescent materials offer a high potential for sensing and (bio-)imaging applications. To investigate new concepts for such materials and to broaden their applicability, the previously reported nonfluorescent zinc(II) complex [Zn(L)] that shows coordination-induced turn-on emission was encapsulated into a family of non-fluorescent polystyrene-block-poly(4vinylpyridine) (PS-b-P4VP) diblock copolymer micelles leading to brightly emissive materials. Coordinationinduced turn-on emission upon incorporation and ligation of the [Zn(L)] in the P4VP core outperform parent [Zn(L)] in pyridine solution with respect to lifetimes, quantum yields, and temperature resistance. The quantum yield can be easily tuned by tailoring the selectivity of the employed solvent or solvent mixture and, thus, the tendency of the PS-b-P4VP diblock copolymers to self-assemble into micelles. A mediumdependent off-on sensor upon micelle formation could be established by suppression of non-micelle-borne emission background pertinent to chloroform through controlled acidification indicating an additional pHdependent process.

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Section: Resultsmentioning

confidence: 99%

Self‐Assembled Fluorescent Block Copolymer Micelles with Responsive Emission

et al. 2022

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“…This soft‐templating strategy has also been employed in recent years for preparing a wide range of mesoporous materials, suitable for energy storage and conversion owing to their ability to absorb, store, and interact with guest species on their exterior/interior surfaces and in the pore space 215 . Finally, of equal interest is the BCP template‐assisted fabrication of nano‐catalysts, that have a broad field of promising applications 216 …”

Section: Applications Of Self‐assembled Bcpsmentioning

confidence: 99%

Block copolymer solution self‐assembly: Recent advances, emerging trends, and applications

Karayianni

Pispas

2021

Journal of Polymer Science

116

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The self‐assembly process of block copolymers (BCPs) in solution has been at the focus of extended scientific research over the past several decades owing to the astonishing morphological diversity and attainable complexity of the resulting nanoassemblies, including spheres, cylinders, lamellae, vesicles, and many other complex, bicontinuous or even hierarchical structures. The ever‐increasing sophistication in the development of synthetic chemistry methods and techniques has led to a myriad of available macromolecules with varying chemical compositions, architectures, features, and properties. This assortment of characteristics has led in turn to a plethora of intriguing self‐organized polymeric nanostructures, with countless possible applications in several nanotechnological fields relevant to physics, chemistry, material science, nanomedicine, and biomaterials. The present review aims to illuminate the importance and fascinating potential of BCPs solution self‐assembly by highlighting recent advances and emerging trends in the field, as well as significant application‐oriented progress, through characteristic contemporary examples.

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“…Hence, utilizing BCP micellar templates, periodic nanoparticle arrays can be generated on various substrates, whereas additional post-treatment strategies, like thermal or solvent vapor annealing or surface reconstruction, can be implemented to generate nanoparticle arrays with a long-range lateral order. Using the BCP micellar template approach, one can fabricate ordered arrays of nanoparticles (NPs) of desired size and control the interparticle spacing by selecting the BCP of suitable molecular weight, length of the block segments, or using different solvents [ 18 ]. Therefore, the choice of BCP determines the areal density of NPs on the substrate.…”

Section: Bcp Templates For Catalystsmentioning

confidence: 99%

Block Copolymer Template-Directed Catalytic Systems: Recent Progress and Perspectives

et al. 2021

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Fabrication of block copolymer (BCP) template-assisted nano-catalysts has been a subject of immense interest in the field of catalysis and polymer chemistry for more than two decades now. Different methods, such as colloidal route, on-substrate methods, bulk self-assembly approaches, combined approaches, and many others have been used to prepare such nano-catalysts. The present review focuses on the advances made in this direction using diblock, triblock, and other types of BCP self-assembled structures. It will be shown how interestingly, researchers have exploited the features of tunable periodicity, domain orientation, and degree of lateral orders of self-assembled BCPs by using fundamental approaches, as well as using different combinations of simple methods to fabricate efficient catalysts. These approaches allow for fabricating catalysts that are used for the growth of single- and multi-walled carbon nanotubes (CNTs) on the substrate, size-dependent electrooxidation of the carbon mono oxide, cracking of 1,3,5-triisopropylbenzene (TIPB), methanol oxidation, formic acid oxidation, and for catalytic degradation of dyes and water pollutants, etc. The focus will also be on how efficient and ease-of-use catalysts can be fabricated using different BCP templates, and how these have contributed to the fabrication of different nano-catalysts, such as nanoparticle array catalysts, strawberry and Janus-like nanoparticles catalysts, mesoporous nanoparticles and film catalysts, gyroid-based bicontinuous catalysts, and hollow fiber membrane catalysts.

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Amphiphilic Block Copolymer Micelles in Selective Solvents: The Effect of Solvent Selectivity on Micelle Formation

Cited by 24 publications

References 30 publications

Self‐Assembled Fluorescent Block Copolymer Micelles with Responsive Emission

Self‐Assembled Fluorescent Block Copolymer Micelles with Responsive Emission

Block copolymer solution self‐assembly: Recent advances, emerging trends, and applications

Block Copolymer Template-Directed Catalytic Systems: Recent Progress and Perspectives

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