parvaneh pakravan

[ 1 ] - Study on the Interaction between Isatin-β-Thiosemicarbazone and Calf Thymus DNA by Spectroscopic Techniques

The interaction between isatin-β-thiosemicarbazone (IBT) and calf thymus DNA (CT-DNA) was investigated in physiological buffer (pH 7.4) using Neutral Red (NR) dye as a spectral probe by UV–Vis absorption and ﬂuorescence spectroscopy, as well as viscosity measurements. The IBT is stabilized by intercalation in the DNA ( K [IBT –DNA] =1.03×105 M−1), and displaces the NR dye from the NR–DNA comple...

[ 2 ] - The Possibility of Selective Adsorption and Sensing of the Noble Gaseous Species by the C20 Fullerene, the Graphene Sheets, and the N4B4 Cluster

There are only a handful reports about the sensor systems having the ability of detecting the existence of the noble gases. Chemical reluctance of these gaseous species causes them to have no chemical interactions like hydrogen bonding with the chemically designed nano-sized sensors. Noble gasses usually have no atomic charges nor do change the total polarity of the molecular sensor systems. Th...

[ 3 ] - Study on the Interaction between Isatin-β-Thiosemicarbazone and Calf Thymus DNA by Spectroscopic Techniques

The interaction between isatin-β-thiosemicarbazone (IBT) and calf thymus DNA (CT-DNA) was investigated in physiological buffer (pH 7.4) using Neutral Red (NR) dye as a spectral probe by UV–Vis absorption and ﬂuorescence spectroscopy, as well as viscosity measurements. The IBT is stabilized by intercalation in the DNA ( K [IBT –DNA] =1.03×105 M−1), and displaces the NR dye from the NR–DNA comple...

[ 4 ] - Spontaneous Adsorption, and Selective Sensing of CO, and CO2 Greenhouse Gaseous Species by the more Stable Forms of N4B4 Clusters

Carbon oxide gaseous species are potentially considered as pollutants of the atmosphere of earth; especially, carbon monoxide and carbon dioxide which are of the well-known carbon oxids, play an effective role in the greenhouse gas emissions. Moreover, these species could initiate or handle some chain reactions in the troposphere that lead to emergence of some secondly air pollutants which may ...