Synthesis, characterization and surface properties of star-shaped polymeric surfactants with polyhedral oligomeric silsesquioxane core

Uner, Ahmet; Doğancı, Erdinç; Taşdelen, Mehmet Atilla; Yılmaz, Faruk; Gürek, Ayşe Gül

doi:10.1002/pi.5420

Cited by 21 publications

(27 citation statements)

References 54 publications

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“…poly(ethylene glycol) methyl ether (PEG-alkyne) Synthesis procedure of alkyne functionalized poly(ethylene glycol) methyl ether was performed according to previous literatures [48][49][50]. Briefly, the mPEG (3 g, 0.6 mmol) solution in 25 mL CH 2 Cl 2 , 4-pentyonic acid (0.22 g, 2.25 mmol), DMAP (0.09 g, 0.75 mmol) and DCC (0.45 g, 2.25 mmol) solution in 10 mL CH 2 Cl 2 were added into a 250 mL one necked flat bottomed flask, equipped with magnetic stirrer bar.…”

Section: Synthesis Of Alkyne-end Functionalizedmentioning

confidence: 99%

Polypropylene-based graft copolymers via CuAAC click chemistry

Açık¹,

Sey²,

Taşdelen³

2018

Express Polym. Lett.

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Abstract. Graft copolymers from commercial chlorinated polypropylene (PP-Cl) possessing either poly(ethylene glycol) (PEG) or poly(ɛ-caprolactone) (PCL) grafts are synthesized by copper (I)-catalyzed azide-alkyne cycloaddition 'click' reaction (CuAAC). For this purpose, azido-functional polypropylene is prepared by nucleophilic substitution of chlorine groups of PP-Cl with azidotrimethylsilane-tetrabutylammonium fluoride. Whereas, the clickable alkyne end-functional PEG and PCL are independently synthesized by esterification reaction of poly(ethylene glycol) methyl ether with 4-pentyonic acid at room temperature and ring-opening polymerization of ε-caprolactone using stannous octoate as catalyst and propargyl alcohol as initiator. Finally, the corresponding graft copolymers, PP-g-PEG and PP-g-PCL, with different surface properties were successfully synthesized by CuAAC 'click' reaction under mild condition. Spectral, chromatographic and thermal analyses at various stages prove the formation of desired polypropylene-based graft copolymers with well-defined properties. Furthermore, the water contact angle values of PP-Cl, PP-g-PEG and PP-g-PCL are found as 90±1°, 78±1.8° and 83±2.1°, respectively.

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Section: Synthesis Of Alkyne-end Functionalizedmentioning

confidence: 99%

Polypropylene-based graft copolymers via CuAAC click chemistry

Açık¹,

Sey²,

Taşdelen³

2018

Express Polym. Lett.

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“…and diameter ranging from 1 to 3 nm [ 23 ]. The size of POSSs depends on the surrounding R groups, where R could be a hydrogen atom or organic functional groups which could be precisely functionalized via the living/controlled polymerization techniques [ 24 ]. POSSs have been reported to construct hybrid polymers with well-defined structures, including telechelic-shaped [ 25 , 26 , 27 ] and star-shaped [ 28 , 29 , 30 ] polymers, dendrimers [ 31 , 32 , 33 ], block copolymers [ 34 , 35 , 36 ], and alternative copolymers [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly and Applications of Amphiphilic Hybrid POSS Copolymers

et al. 2018

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Understanding the mechanism of molecular self-assembly to form well-organized nanostructures is essential in the field of supramolecular chemistry. Particularly, amphiphilic copolymers incorporated with polyhedral oligomeric silsesquioxanes (POSSs) have been one of the most promising materials in material science, engineering, and biomedical fields. In this review, new ideas and research works which have been carried out over the last several years in this relatively new area with a main focus on their mechanism in self-assembly and applications are discussed. In addition, insights into the unique role of POSSs in synthesis, microphase separation, and confined size were encompassed. Finally, perspectives and challenges related to the further advancement of POSS-based amphiphilics are discussed, followed by the proposed design considerations to address the challenges that we may face in the future.

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“…Polyhedral oligomeric silsesquioxane (POSS) is a new class of multifunctional hybrid compound that can be simply incorporated with polymer chain or network through polymerization or grafting . Its cubic structure with eight corner functional groups makes it an ideal core building block for the preparation of hybrid star polymer …”

Section: Introductionmentioning

confidence: 99%

Non‐covalent interactions of pyrene end‐labeled star poly(ɛ‐caprolactone)s with fullerene

Uner

Doğancı

Taşdelen

2018

J of Applied Polymer Sci

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Pyrene end-labeled star poly(E-caprolactone)s (PCLs) with polyhedral oligomeric silsesquioxane (POSS) core were prepared by combination of copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) click chemistry and ring-opening polymerization techniques. First, E-caprolactone (E-CL) is polymerized by using 1-pyrene methanol as initiator and stannous octoate as catalyst to obtain a-pyrene-x-hydroxyl telechelic PCL with different chain lengths. Then, its hydroxyl group is converted to acetylene functionality by esterification reaction with propargyl chloroformate. Finally, the CuAAC click reaction of a-pyrene-x-acetylene telechelic PCL with POSS-(N 3 ) 8 leads to corresponding pyrene end-labeled star-shaped PCLs. The successful synthesis of pyrene end-labeled star polymers is clearly confirmed by 1 H-nuclear magnetic resonance, Fourier transform infrared, gel permeation chromatograph, differential scanning calorimeter, and thermogravimetric analysis. Furthermore, non-covalent interactions of obtained star polymers with fullerene are investigated in liquid media. Based on Raman spectroscopy and visual investigations, the star polymer having shorter chain length exhibited better and more stable dispersion with fullerene. The amount of pyrene units present per polymer chains can directly influence the dispersion stability of fullerene.

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Synthesis, characterization and surface properties of star-shaped polymeric surfactants with polyhedral oligomeric silsesquioxane core

Cited by 21 publications

References 54 publications

Polypropylene-based graft copolymers via CuAAC click chemistry

Polypropylene-based graft copolymers via CuAAC click chemistry

Self-Assembly and Applications of Amphiphilic Hybrid POSS Copolymers

Non‐covalent interactions of pyrene end‐labeled star poly(ɛ‐caprolactone)s with fullerene

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