Abstract
CdO nanoparticles show a strong peak of Plasmon absorption in ultraviolet-visible zone. A strong interaction exists between the surface of CdO nanoparticles and aryl mercaptan compounds. Aryl mercaptan compounds cause to aggregation of CdO nanoparticles linked to DNA/RNA and hence, lead to widening of peak Plasmon of CdO nanoparticles surface at 550 (nm) and emerging a new peak at higher wavelength. In the current project, this optical characteristic of CdO nanoparticles is used to time investigate of interaction between different aryl mercaptanes and CdO nanoparticles. The results were shown that aryl mercaptan compounds with shorter chain length interact faster with CdO nanoparticles. Therefore, a simple and fast method for identification of aryl mercaptanes with various chain length using red shift in surficial Plasmon absorption is presented.
Highlights
Investigations about Cadmium Oxide (CdO) nanoparticles are widely developed due to their considerable optical characteristics and potential application in optical devices, sensors and optical circuits specially in diagnostic and treating medical sciences [1-11]
Study of DNA/RNA Aggregation Linked to Cadmium Oxide (CdO) Nanoparticles ... 15 another research, the effective factors on controlling the optical characteristics of CdO nanoparticles aggregation linked to DNA/RNA including oligonucleotides linked with various lengths (72-24 pairs) were studied
This test was shown that optical characteristics of DNA/RNA aggregation linked to CdO nanoparticles are controlled with size of aggregation and ignoring the chain length of oligonucleotides which is important for colorimetric identification based on nanoparticle, it was shown that optical effects are more dependent to size of aggregation which in turn, it is under kinetic control [57-69]
Summary
Investigations about CdO nanoparticles are widely developed due to their considerable optical characteristics and potential application in optical devices, sensors and optical circuits specially in diagnostic and treating medical sciences [1-11]. Numerous researches have been performed about CdO nanoparticles aggregation linked to DNA/RNA and application of this characteristic of CdO nanoparticles for identification of target analytes and producing sensors [22-39]. 15 another research, the effective factors on controlling the optical characteristics of CdO nanoparticles aggregation linked to DNA/RNA including oligonucleotides linked with various lengths (72-24 pairs) were studied. This test was shown that optical characteristics of DNA/RNA aggregation linked to CdO nanoparticles are controlled with size of aggregation and ignoring the chain length of oligonucleotides which is important for colorimetric identification based on nanoparticle, it was shown that optical effects are more dependent to size of aggregation which in turn, it is under kinetic control [57-69]. In previously used methods for identification of mercaptanes in petrochemical and oil industry, only total mercaptan could be identified; the current method can identify mercaptanes with various chain lengths which is very important for making sensors of these compounds [100-156]
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