Nitrik oksit ve amonyak gibi reaktif gazların analizine yönelik kimyasal optik nanosensör geliştirilmesi

Nitric oxide is one of the most important biochemical parameters taking place in numerous physical and pathological processes in biological systems. Nitrogen oxides are also one of the major pollutants in the atmosphere which cause acid rains, photochemical smog and ozone accumulation. Therefore real-time sensor development studies for nitric oxide attract great attention. This study is largely concerned with the development of optical chemical sensor for nitric oxide radical that can be applied for quantification studies in aqueous environments. For this purpose nitric oxide sensitive molecules mesotetrakis(4-phenylethynyl) phenylporphyrin(PHACH2),mesotetraphenylporphyrinato Zn(II)(ZnTPP),mesotetraphenylporphyrinato Pt(II)(TPPPt(II)) were studied in solvent and/or aqueous media and also embedded in polymeric matrices along with appropriate additives either in thin film or electrospun nanofiber forms. Matrix material of PVC (polyvinyl chloride) were chosen due to excellent compatibility with the indicator dyes, resistant characteristics to water and harsh conditions providing an appropriate micro environment for them. The performances of the potential sensing agents were tested by steady state fluorescence and decay time measurements. Among them the PHACH2 dye exhibited the highest response for radicalic nitric oxide.