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One-pot aqueous synthesis of cysteine-capped CdTe/CdS core-shell nanowires

Journal Article


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Abstract


  • Highly fluorescent cysteine-capped CdTe/CdS core–shell nanowires were successfully synthesized by reacting CdCl2 with NaHTe in aqueous solution under refluxing at 100 °C for 140 min. On increasing the reaction time from 10 to 140 min, CdTe/CdS nanocrystals gradually grew into nanorods and eventually completely evolved into nanowires. The nanowires have amino and carboxyl functional groups on their surfaces and can be well dispersed in aqueous solution. The as-prepared CdTe/CdS nanowires show a fluorescence quantum yield (QY) of 7.25 % due to the unique nature of cysteine and the formation of a CdS shell on the surface of the CdTe core, they have a narrower diameter distribution (d = ~5 nm) and a length in the range of 175–275 nm, and their aspect ratio is between 1/35 and 1/55.

Authors


  •   Shan, Yukai (external author)
  •   Xiao, Zhen (external author)
  •   Chuan, Yongming (external author)
  •   Li, Hongli (external author)
  •   Yuan, Minglong (external author)
  •   Li, Zhen
  •   Dou, Shi Xue

Publication Date


  • 2014

Citation


  • Shan, Y., Xiao, Z., Chuan, Y., Li, H., Yuan, M., Li, Z. & Dou, S. (2014). One-pot aqueous synthesis of cysteine-capped CdTe/CdS core-shell nanowires. Journal of Nanoparticle Research, 16 (2420), 1-11.

Scopus Eid


  • 2-s2.0-84901381605

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2081&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1080

Number Of Pages


  • 10

Start Page


  • 1

End Page


  • 11

Volume


  • 16

Issue


  • 2420

Abstract


  • Highly fluorescent cysteine-capped CdTe/CdS core–shell nanowires were successfully synthesized by reacting CdCl2 with NaHTe in aqueous solution under refluxing at 100 °C for 140 min. On increasing the reaction time from 10 to 140 min, CdTe/CdS nanocrystals gradually grew into nanorods and eventually completely evolved into nanowires. The nanowires have amino and carboxyl functional groups on their surfaces and can be well dispersed in aqueous solution. The as-prepared CdTe/CdS nanowires show a fluorescence quantum yield (QY) of 7.25 % due to the unique nature of cysteine and the formation of a CdS shell on the surface of the CdTe core, they have a narrower diameter distribution (d = ~5 nm) and a length in the range of 175–275 nm, and their aspect ratio is between 1/35 and 1/55.

Authors


  •   Shan, Yukai (external author)
  •   Xiao, Zhen (external author)
  •   Chuan, Yongming (external author)
  •   Li, Hongli (external author)
  •   Yuan, Minglong (external author)
  •   Li, Zhen
  •   Dou, Shi Xue

Publication Date


  • 2014

Citation


  • Shan, Y., Xiao, Z., Chuan, Y., Li, H., Yuan, M., Li, Z. & Dou, S. (2014). One-pot aqueous synthesis of cysteine-capped CdTe/CdS core-shell nanowires. Journal of Nanoparticle Research, 16 (2420), 1-11.

Scopus Eid


  • 2-s2.0-84901381605

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2081&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1080

Number Of Pages


  • 10

Start Page


  • 1

End Page


  • 11

Volume


  • 16

Issue


  • 2420