Hyperbranch-polyethyleniminated functional polymers II

Effect of polyethyleniminated polyoxypropylenediamines on copper nanoparticle formation in aqueous solution

Ping-Lin Kuo, Wuu Jyh Liang, Fu Yu Wang

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7 Citations (Scopus)

Abstract

Colloidal aqueous solution of zerovalent copper (Cu(0)) nanoparticles were prepared from the Cu2+ ions coordinated with polyethyleniminated polyoxypropylenediamines (D400(EI)x) followed by chemical reduction of NaBH4. Aqueous solution of copper clusters formed in the presence of D400(EI)8 with a loading ratio of [EI]/[Cu2+] = 3 were stable without precipitation for standing more than 1 month. The protective effects of D400(EI)x and the particle size of the resulted Cu nanoparticle are regulated by the attachments of ethylenimine (EI) groups per polymer backbone and the normality ratio of [EI]/[Cu2+] used. It is found that the more EI-content per polymer backbone results in the smaller particle size and the narrower size dispersity of the colloidal Cu(0) particles, and the average particle size of 5.07 nm with standard deviation of 0.86 nm was obtained in the presence of D400(EI)8 with the ratio of [EI]/[Cu2+] = 3. As the polymer concentration of D400(EI)8 increases (the increase of [EI]/[Cu2+]), the average particle size of the prepared Cu(0) nanoparticle slightly changes, but interestingly, the size dispersity gradually decreases, where the standard deviation for the concentration at [EI]/[Cu2+] = 5 is 0.82 nm approaching that for monodispersed nanoparticles (0.5nm).

Original languageEnglish
Pages (from-to)435-442
Number of pages8
JournalColloid and Polymer Science
Volume284
Issue number4
DOIs
Publication statusPublished - 2006 Jan 1

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Functional polymers
Copper
Particle size
Nanoparticles
aqueous solutions
copper
nanoparticles
polymers
Polymers
standard deviation
normality
attachment
aziridine
Ions
ions

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

Cite this

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title = "Hyperbranch-polyethyleniminated functional polymers II: Effect of polyethyleniminated polyoxypropylenediamines on copper nanoparticle formation in aqueous solution",
abstract = "Colloidal aqueous solution of zerovalent copper (Cu(0)) nanoparticles were prepared from the Cu2+ ions coordinated with polyethyleniminated polyoxypropylenediamines (D400(EI)x) followed by chemical reduction of NaBH4. Aqueous solution of copper clusters formed in the presence of D400(EI)8 with a loading ratio of [EI]/[Cu2+] = 3 were stable without precipitation for standing more than 1 month. The protective effects of D400(EI)x and the particle size of the resulted Cu nanoparticle are regulated by the attachments of ethylenimine (EI) groups per polymer backbone and the normality ratio of [EI]/[Cu2+] used. It is found that the more EI-content per polymer backbone results in the smaller particle size and the narrower size dispersity of the colloidal Cu(0) particles, and the average particle size of 5.07 nm with standard deviation of 0.86 nm was obtained in the presence of D400(EI)8 with the ratio of [EI]/[Cu2+] = 3. As the polymer concentration of D400(EI)8 increases (the increase of [EI]/[Cu2+]), the average particle size of the prepared Cu(0) nanoparticle slightly changes, but interestingly, the size dispersity gradually decreases, where the standard deviation for the concentration at [EI]/[Cu2+] = 5 is 0.82 nm approaching that for monodispersed nanoparticles (0.5nm).",
author = "Ping-Lin Kuo and Liang, {Wuu Jyh} and Wang, {Fu Yu}",
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AU - Liang, Wuu Jyh

AU - Wang, Fu Yu

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N2 - Colloidal aqueous solution of zerovalent copper (Cu(0)) nanoparticles were prepared from the Cu2+ ions coordinated with polyethyleniminated polyoxypropylenediamines (D400(EI)x) followed by chemical reduction of NaBH4. Aqueous solution of copper clusters formed in the presence of D400(EI)8 with a loading ratio of [EI]/[Cu2+] = 3 were stable without precipitation for standing more than 1 month. The protective effects of D400(EI)x and the particle size of the resulted Cu nanoparticle are regulated by the attachments of ethylenimine (EI) groups per polymer backbone and the normality ratio of [EI]/[Cu2+] used. It is found that the more EI-content per polymer backbone results in the smaller particle size and the narrower size dispersity of the colloidal Cu(0) particles, and the average particle size of 5.07 nm with standard deviation of 0.86 nm was obtained in the presence of D400(EI)8 with the ratio of [EI]/[Cu2+] = 3. As the polymer concentration of D400(EI)8 increases (the increase of [EI]/[Cu2+]), the average particle size of the prepared Cu(0) nanoparticle slightly changes, but interestingly, the size dispersity gradually decreases, where the standard deviation for the concentration at [EI]/[Cu2+] = 5 is 0.82 nm approaching that for monodispersed nanoparticles (0.5nm).

AB - Colloidal aqueous solution of zerovalent copper (Cu(0)) nanoparticles were prepared from the Cu2+ ions coordinated with polyethyleniminated polyoxypropylenediamines (D400(EI)x) followed by chemical reduction of NaBH4. Aqueous solution of copper clusters formed in the presence of D400(EI)8 with a loading ratio of [EI]/[Cu2+] = 3 were stable without precipitation for standing more than 1 month. The protective effects of D400(EI)x and the particle size of the resulted Cu nanoparticle are regulated by the attachments of ethylenimine (EI) groups per polymer backbone and the normality ratio of [EI]/[Cu2+] used. It is found that the more EI-content per polymer backbone results in the smaller particle size and the narrower size dispersity of the colloidal Cu(0) particles, and the average particle size of 5.07 nm with standard deviation of 0.86 nm was obtained in the presence of D400(EI)8 with the ratio of [EI]/[Cu2+] = 3. As the polymer concentration of D400(EI)8 increases (the increase of [EI]/[Cu2+]), the average particle size of the prepared Cu(0) nanoparticle slightly changes, but interestingly, the size dispersity gradually decreases, where the standard deviation for the concentration at [EI]/[Cu2+] = 5 is 0.82 nm approaching that for monodispersed nanoparticles (0.5nm).

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