Optical properties effect of cadmium sulfide quantum dots towards conjugation process

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Sphere-shaped cadmium sulfide quantum dots (CdS QDs) with well-controlled morphology and uniform size were successfully synthesized by using simple colloidal method with addition of thiolglycolic acid as stabilizer. Size and optical properties of CdS QDs could be tuned by altering the CdS QDs surface with capped ligand Polyethylenimine (PEI) while their aqueous isoelectric charge was adjusted by changing the pH solution with added sodium hydroxide (NaOH). Morphology, optical properties and surface charge of CdS QDs have been characterized by transmitted electron microscopic (TEM), absorption spectra analysis, photoluminescence spectroscopy and Nanozeta potential, respectively. Furthermore, CdS-lysozyme conjugates have been obtained by electrostatic interaction between CdS QDs and lysozyme, which is lysozyme protein with isoelectric +11.2 mV. Surface change after conjugation process was investigated. Optical absorption edge and intensity of luminescence was not affected after conjugation process.

Original languageEnglish
Title of host publicationIFMBE Proceedings
Pages92-96
Number of pages5
Volume35 IFMBE
DOIs
Publication statusPublished - 2011
Event5th Kuala Lumpur International Conference on Biomedical Engineering, BIOMED 2011, Held in Conjunction with the 8th Asian Pacific Conference on Medical and Biological Engineering, APCMBE 2011 - Kuala Lumpur, Malaysia
Duration: 20 Jun 201123 Jun 2011

Other

Other5th Kuala Lumpur International Conference on Biomedical Engineering, BIOMED 2011, Held in Conjunction with the 8th Asian Pacific Conference on Medical and Biological Engineering, APCMBE 2011
CountryMalaysia
CityKuala Lumpur
Period20/6/1123/6/11

Fingerprint

Cadmium sulfide
Semiconductor quantum dots
Optical properties
Muramidase
Enzymes
Polyethyleneimine
Sodium Hydroxide
Photoluminescence spectroscopy
Surface charge
Coulomb interactions
Spectrum analysis
Light absorption
Luminescence
Absorption spectra
Ligands
Sodium
cadmium sulfide
Proteins
Acids
Electrons

Keywords

  • CdS QDs
  • CdS-lysozyme conjugates
  • Electrostatic interaction
  • Optical Properties
  • Polyethylenimine (PEI)

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering

Cite this

Optical properties effect of cadmium sulfide quantum dots towards conjugation process. / Shamsudin, Siti Aisyah; Omar, N. F.; Radiman, Shahidan.

IFMBE Proceedings. Vol. 35 IFMBE 2011. p. 92-96.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shamsudin, SA, Omar, NF & Radiman, S 2011, Optical properties effect of cadmium sulfide quantum dots towards conjugation process. in IFMBE Proceedings. vol. 35 IFMBE, pp. 92-96, 5th Kuala Lumpur International Conference on Biomedical Engineering, BIOMED 2011, Held in Conjunction with the 8th Asian Pacific Conference on Medical and Biological Engineering, APCMBE 2011, Kuala Lumpur, Malaysia, 20/6/11. https://doi.org/10.1007/978-3-642-21729-6_26
@inproceedings{7a5c535a2dc648c8b0345980f8df3e87,
title = "Optical properties effect of cadmium sulfide quantum dots towards conjugation process",
abstract = "Sphere-shaped cadmium sulfide quantum dots (CdS QDs) with well-controlled morphology and uniform size were successfully synthesized by using simple colloidal method with addition of thiolglycolic acid as stabilizer. Size and optical properties of CdS QDs could be tuned by altering the CdS QDs surface with capped ligand Polyethylenimine (PEI) while their aqueous isoelectric charge was adjusted by changing the pH solution with added sodium hydroxide (NaOH). Morphology, optical properties and surface charge of CdS QDs have been characterized by transmitted electron microscopic (TEM), absorption spectra analysis, photoluminescence spectroscopy and Nanozeta potential, respectively. Furthermore, CdS-lysozyme conjugates have been obtained by electrostatic interaction between CdS QDs and lysozyme, which is lysozyme protein with isoelectric +11.2 mV. Surface change after conjugation process was investigated. Optical absorption edge and intensity of luminescence was not affected after conjugation process.",
keywords = "CdS QDs, CdS-lysozyme conjugates, Electrostatic interaction, Optical Properties, Polyethylenimine (PEI)",
author = "Shamsudin, {Siti Aisyah} and Omar, {N. F.} and Shahidan Radiman",
year = "2011",
doi = "10.1007/978-3-642-21729-6_26",
language = "English",
isbn = "9783642217289",
volume = "35 IFMBE",
pages = "92--96",
booktitle = "IFMBE Proceedings",

}

TY - GEN

T1 - Optical properties effect of cadmium sulfide quantum dots towards conjugation process

AU - Shamsudin, Siti Aisyah

AU - Omar, N. F.

AU - Radiman, Shahidan

PY - 2011

Y1 - 2011

N2 - Sphere-shaped cadmium sulfide quantum dots (CdS QDs) with well-controlled morphology and uniform size were successfully synthesized by using simple colloidal method with addition of thiolglycolic acid as stabilizer. Size and optical properties of CdS QDs could be tuned by altering the CdS QDs surface with capped ligand Polyethylenimine (PEI) while their aqueous isoelectric charge was adjusted by changing the pH solution with added sodium hydroxide (NaOH). Morphology, optical properties and surface charge of CdS QDs have been characterized by transmitted electron microscopic (TEM), absorption spectra analysis, photoluminescence spectroscopy and Nanozeta potential, respectively. Furthermore, CdS-lysozyme conjugates have been obtained by electrostatic interaction between CdS QDs and lysozyme, which is lysozyme protein with isoelectric +11.2 mV. Surface change after conjugation process was investigated. Optical absorption edge and intensity of luminescence was not affected after conjugation process.

AB - Sphere-shaped cadmium sulfide quantum dots (CdS QDs) with well-controlled morphology and uniform size were successfully synthesized by using simple colloidal method with addition of thiolglycolic acid as stabilizer. Size and optical properties of CdS QDs could be tuned by altering the CdS QDs surface with capped ligand Polyethylenimine (PEI) while their aqueous isoelectric charge was adjusted by changing the pH solution with added sodium hydroxide (NaOH). Morphology, optical properties and surface charge of CdS QDs have been characterized by transmitted electron microscopic (TEM), absorption spectra analysis, photoluminescence spectroscopy and Nanozeta potential, respectively. Furthermore, CdS-lysozyme conjugates have been obtained by electrostatic interaction between CdS QDs and lysozyme, which is lysozyme protein with isoelectric +11.2 mV. Surface change after conjugation process was investigated. Optical absorption edge and intensity of luminescence was not affected after conjugation process.

KW - CdS QDs

KW - CdS-lysozyme conjugates

KW - Electrostatic interaction

KW - Optical Properties

KW - Polyethylenimine (PEI)

UR - http://www.scopus.com/inward/record.url?scp=79959922734&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79959922734&partnerID=8YFLogxK

U2 - 10.1007/978-3-642-21729-6_26

DO - 10.1007/978-3-642-21729-6_26

M3 - Conference contribution

SN - 9783642217289

VL - 35 IFMBE

SP - 92

EP - 96

BT - IFMBE Proceedings

ER -