원문정보
초록
영어
Nanocrystalline porous silicon surfaces have been used to detect nitroaromatic compounds in vapor phase. The mode of photoluminescence is emphasized as a sensing attitude or detection technique. Quenching of photoluminescence from nanocrystalline porous surfaces as a transduction mode is measured upon the exposure of nitroaromatic compounds. Reversible detection mode for nitroaromatics is, too, observed. To verify the detection afore-mentioned, photoluminescent freshly prepared porous silicons are functionalized with different groups. The mechanism of quenching of photoluminescence is attributed to the electron transfer behaviors of quantum-sized nano-crystallites in the porous silicon matrix to the analytes(nitroaromatics). An attempt has been done to prove that the surface-derivatized photoluminescent porous silicone surfaces can ac
목차
1. Introduction
2. Experimental Section
2.1. Materials and Methods
2.2. Etching Set-up for Porous Silicon Surface
2.3. Availability of Nitroaromatic Compounds
3. Result and Discussion
3.1. Fluorescence Quenching Studies
4. Conclusion
References