@article {Yao20141,
	title = {DNA interaction probed by evanescent wave cavity ring-down absorption spectroscopy via functionalized gold nanoparticles},
	journal = {Analytica Chimica Acta},
	volume = {820},
	year = {2014},
	note = {<p>cited By 1</p>
},
	pages = {1-8},
	abstract = {<p>Evanescent wave cavity ring-down absorption spectroscopy (EW-CRDS) is employed to study interaction and binding kinetics of DNA strands by using gold nanoparticles (Au NPs) as sensitive reporters. These Au NPs are connected to target DNA of study that hybridizes with the complementary DNA fixed on the silica surface. By the absorbance of Au NPs, the interaction between two DNA strands may be examined to yield an adsorption equilibrium constant of 2.2{\texttimes}1010M-1 using Langmuir fit. The binding efficiency that is affected by ion concentration, buffer pH and temperature is also examined. This approach is then applied to the label-free detection of the DNA mutation diseases using the sandwich hybridization assay. For monitoring a gene associated with sickle-cell anemia, the detection limit and the adsorption equilibrium constant is determined to be 1.2pM and (3.7{\textpm}0.8){\texttimes}1010M-1, distinct difference from the perfectly matched DNA sequence that yields the corresponding 0.5pM and (1.1{\textpm}0.2){\texttimes}1011M-1. The EW-CRDS method appears to have great potential for the investigation of the kinetics of a wide range of biological reactions. {\textcopyright} 2014 Elsevier B.V.</p>
},
	keywords = {Absorption spectroscopy, Adsorption isotherms, Article, binding affinity, binding assay, binding kinetics, Cavity ring-down, complementary DNA, DNA, DNA binding, DNA denaturation, DNA determination, DNA hybridization, DNA interaction, DNA sensing, DNA sequence, DNA strand, Electromagnetic wave reflection, equilibrium constant, Equilibrium constants, evanescent wave cavity ring down absorption spectroscopy, GOLD, Gold alloys, gold nanoparticle, Gold nanoparticles, hemoglobin, hemoglobin gene, hybridization, ionic strength, limit of detection, Metal nanoparticles, pH, priority journal, sandwich hybridization assay, sickle cell anemia, Sickle cell disease, silicon dioxide},
	doi = {10.1016/j.aca.2014.01.045},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898646295\&doi=10.1016\%2fj.aca.2014.01.045\&partnerID=40\&md5=ecc7a82cdcb626321f22c277ad27a307},
	author = {Yao, Y.-J. and Lin, K.-C.}
}
