Preparation of metallosupramolecular single-chain polymeric nanoparticles and their characterization by Taylor dispersion,Polymer Chemistry

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Preparation of metallosupramolecular single-chain polymeric nanoparticles and their characterization by Taylor dispersion
Polymer Chemistry ( IF 4.1 ) Pub Date : 2019-11-19 , DOI: 10.1039/c9py01264h
Laura N. Neumann _{1,

2,

3,

4} , Dominic A. Urban _{1,

2,

3,

4} , Philipp Lemal _{1,

2,

3,

4} , Sushila Ramani _{1,

2,

3,

4} , Alke Petri-Fink _{1,

2,

3,

4} , Sandor Balog _{1,

2,

3,

4} , Christoph Weder _{1,

2,

3,

4} , Stephen Schrettl _{1,

2,

3,

4}

Affiliation

Intramolecular cross-linking of polymers can furnish single-chain polymeric nanoparticles (SCPNs), and the use of reversible non-covalent bonds for cross-linking can potentially provide such nanoparticles with stimuli-responsive properties. Here, we report the synthesis of acrylic polymers that carry pendant 2,6-bis(1′-methyl-benzimidazolyl)pyridine ligands, and use these for the preparation of SCPNs through the complex formation with different types of metal ions. The addition of the polymer to solutions containing Fe²⁺, Zn²⁺, or Eu³⁺ ions at low concentrations reliably furnishes the metal–ligand complexes. In order to demonstrate the formation of single-chain polymeric nanoparticles, conventional characterization techniques were complemented by Taylor dispersion analysis, which proved to be particularly useful to accurately measure the hydrodynamic radii of the dispersed particles, in spite of the formation of a small fraction of larger aggregates.

中文翻译：

金属超分子单链聚合物纳米粒子的制备及其泰勒分散体表征

聚合物的分子内交联可提供单链聚合物纳米颗粒（SCPN），使用可逆的非共价键进行交联可潜在地为此类纳米颗粒提供刺激响应特性。在这里，我们报告了丙烯酸树脂聚合物的合成，该聚合物带有2,6-双（1'-甲基-苯并咪唑基）吡啶侧基配体，并将其用于通过与不同类型金属离子的络合物形成来制备SCPN。将聚合物添加到含Fe 2 ⁺，Zn ²⁺或Eu ^3+的溶液中低浓度的离子能可靠地提供金属-配体络合物。为了证明单链聚合物纳米颗粒的形成，泰勒分散分析补充了传统的表征技术，尽管形成了少量的纳米颗粒，泰勒分散分析被证明对准确测量分散颗粒的流体动力学半径特别有用。较大的聚集体。

更新日期：2019-11-19

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