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Hexanedioic acid mediated surface–ligand-exchange process for transferring NaYF4:Yb/Er (or Yb/Tm) up-converting nanoparticles from hydrophobic to hydrophilic

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Abstract.
Water-soluble and carboxyl-functionalized up-converting rare-earth nanoparticles (UCNPs) are obtained
via an efficient surface–ligand-exchange procedure. Hexanedioic acid molecules are employed to replace
the original hydrophobic ligands in diethylene glycol solvent at high temperature. Various characterizations
indicate the ligand-exchange process has negligible adverse effect on the quality of the UCNPs. The
resulting hydrophilic UCNPs show small size, strong up-converting emission and high water stability. The
specific molecular recognition capacity of avidin-modified hydrophilic UCNPs confirms that hydrophilic
UCNPs are suitable for potential biological labeling.

Keywords:
Nanoparticles
Upconversion
NaYF4
Hexanedioic acid
Ligand exchange
Biological application

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Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 336 (2009) 171–175

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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