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Updated: Feb 12, 2026

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
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由聚合物矩阵支持的可回收IPN光催化剂:从可溶性共聚物到核心聚合物刷纳米结构

Elena Avanzini1, Alessio Lo Bocchiaro1, Agata Checcozzo2

  • 1Laboratory for Macromolecular and Organic Chemistry, Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy.

Journal of the American Chemical Society
|February 11, 2026
PubMed
概括

研究人员开发了有机光催化剂 (PC) 的高级聚合物支. 在纳米颗粒上的纳米结构聚合物刷显著改善了催化剂的回收和再利用,提高了小分子激活的效率和可持续性.

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Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Polymer Classification: Crystallinity

Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
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Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
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Unlike small molecules with definite molecular weights, polymers are a mixture of individual polymer chains of varying lengths, each with a unique molecular weight.  So, the molecular weight of a polymer is expressed as an average value based on the average size of the polymer chains. The two most common forms of averages used for polymers are the number average molecular weight and weight average molecular weight.
The number average molecular weight (Mn) is the summation of the number...
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