Polyacrylic acid coating of highly luminescent CdS nanocrystals for biological labeling applications

Sato, Keita; Tachibana, Yasuhiro; Hattori, Shinya; Chiba, Tomoyuki; Kuwabata, Susumu

doi:10.1016/j.jcis.2008.04.075

Cited by 25 publications

(13 citation statements)

References 34 publications

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“…In semiconductors, the quantum confinement modulates the band structure of the nanoparticles, and hence, many properties can be tuned by changing the nanoparticles size. Owing to the quantum size effect of the semiconductor nanoparticles, the II-VI semiconductor nanoparticles in particular, exhibit size-dependent optical properties (Alivisatos 1996), which are of great importance for potential applications, such as light emitting diodes (Coe et al 2002), biological labels (Zhang et al 2003;Sato et al 2008), optoelectronic devices (Duan et al 2003) and solar cells (Huynh et al 2002). Research in semiconducting nanoparticles is one of the most investigated subjects, due to their wide field of applications.…”

Section: Introductionmentioning

confidence: 99%

Studies on the dielectric properties of CdS nanoparticles

Sagadevan

2013

Appl Nanosci

150

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CdS is one of the most important II-VI semiconductors with applications in solar cells, optoelectronics and electronic devices. CdS nanoparticles were synthesized by the wet chemical method. The crystal structure and grain size of the particles were determined by X-ray diffraction. The optical properties were studied by the ultraviolet-visible absorption spectrum. The dielectric properties of CdS nanoparticles were studied in the frequency range of 50 Hz-5 MHz at different temperatures. The frequency dependence of the dielectric constant and dielectric loss is found to decrease with an increase in the frequency at different temperatures. The dielectric properties of CdS nanoparticles are found to be significantly enhanced specially in the low frequency range due to confinement. Further, electronic properties, such as valence electron plasma energy, average energy gap or Penn gap, Fermi energy and electronic polarizability of the CdS nanoparticles were calculated. The AC electrical conductivity measurements reveal that the conduction depends on both the frequency and the temperatures.

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Section: Introductionmentioning

confidence: 99%

Studies on the dielectric properties of CdS nanoparticles

Sagadevan

2013

Appl Nanosci

150

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“…Polyacrylic acid (PAA) is of great technological interest for applications in biomedical [1][2][3], electrochemical [4,5], electronic [6] and optical [7] devices. PAA has been utilized as a binder and solid electrolyte for lithium ion batteries [8] and supercapacitors [9,10].…”

Section: Introductionmentioning

confidence: 99%

Electrophoretic deposition of polyacrylic acid and composite films containing nanotubes and oxide particles

Wang

Deen

Zhitomirsky

2011

Journal of Colloid and Interface Science

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“…Due to the quantum size effect, semiconductor quantum dots (QDs), especially the II-VI semiconductor QDs exhibit size-dependent optical properties [1], which are of great importance to applications such as light-emitting diodes [2], biological labels [3,4], optoelectronic devices [5], and solar cells [6]. Of all the II-VI semiconductors, CdS is an important direct-band semiconductor with a bandgap (E g ) of 2.4 eV.…”

Section: Introductionmentioning

confidence: 99%