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Structure and Function of Platelets01:18

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The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
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Related Experiment Video

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Morphologically Tunable Rectangular Platelets Self-Assembled from Diblock Molecular Brushes Containing Azopyridine

Yuan Yao1, Lu Zhang1, Sen Zhang2

  • 1Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China.

Langmuir : the ACS Journal of Surfaces and Colloids
|December 12, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method to create tunable 2D rectangular platelets using polymer self-assembly. This advance in materials science enables precise control over platelet morphology for advanced optical and electrical devices.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Two-dimensional (2D) platelet structures are crucial for optical and electrical devices.
  • Creating morphologically tunable rectangular platelets via polymer self-assembly remains a significant challenge.

Purpose of the Study:

  • To develop a rational strategy for fabricating 2D rectangular platelets with controlled morphology.
  • To explore the self-assembly behavior of novel diblock molecular brushes.

Main Methods:

  • Synthesis of amphiphilic PEG-co-(PtBA-g-PAzoPy) diblock molecular brushes (DMBs) using sequential polymerization techniques.
  • Solution self-assembly of DMBs via a heating-cooling-aging process in selective solvents.
  • Investigation of metal chelation and H-bonding-assisted co-assembly.

Main Results:

  • Fabrication of 2D rectangular platelets with tunable morphology and size by controlling DMB composition and solvent polarity.
  • Demonstration of metal chelation leading to 2D hybrids.
  • Formation of flower-like platelets through H-bonding-assisted co-assembly.

Conclusions:

  • An efficient method for fabricating tunable 2D rectangular platelets has been established.
  • The self-assembly strategy offers precise control over platelet morphology.
  • The developed materials show potential for creating advanced 2D nanostructures.