Donor-Acceptor Core-Shell Nanoparticles and Their Application in Non-Volatile Transistor Memory Devices

Macromol Rapid Commun. 2019 Jun;40(12):e1900115. doi: 10.1002/marc.201900115. Epub 2019 Apr 25.

Abstract

Donor-acceptor crosslinked poly[poly(ethylene glycol) methyl ether-methacrylate]-block-poly[1,1'-bis(2-ethylpentyl)-6-methyl-6'-(5-methyl-3-vinylthiophen-2-yl)-[3,3'-biindoline]-2,2'-dione] (poly(PEGMA)m -b-poly(VTIID)n ) nanoparticles with various vinylthiophene donor/isoindigo acceptor ratios are synthesized successfully. The prepared nanoparticles have uniform sizes and well-defined core-shell nanostructures. The intramolecular charge transfer is effectively enhanced due to the incorporation of acceptor groups after the crosslinking reaction. A transistor memory device is assembled using the synthesized polymer and has nonvolatile flash-type memory and amphiphilic trapping behavior. The optimized devices exhibit a significant memory window of approximately 38 V, a retention ability of over 104 s, and an endurance of at least 100 cycles. This study examines multiple applications of crosslinked core-shell nanoparticles, which demonstrates their promise as charge-storage dielectric materials for use in organic memory devices.

Keywords: block copolymers; core-shell; donor-acceptor; nanoparticles; transistor memory.

MeSH terms

  • Cross-Linking Reagents / chemical synthesis
  • Cross-Linking Reagents / chemistry*
  • Molecular Structure
  • Nanoparticles / chemistry*
  • Particle Size
  • Polymers / chemical synthesis
  • Polymers / chemistry*
  • Surface Properties
  • Transistors, Electronic*

Substances

  • Cross-Linking Reagents
  • Polymers