کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442528 | 1509445 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optical and electrochemical investigation of diaminonaphthalene derivatives Optical and electrochemical investigation of diaminonaphthalene derivatives](/preview/png/1442528.png)
A series of diaminonaphthalene derivatives with naphthalene as a core and butylamino and phenylamino as substituted groups were synthesized and their optical and electrochemical behavior were investigated. Phenylamino substituted naphthalene derivatives exhibit two absorption bands, which are assigned to n → π* electronic transitions that are due to electron transfer from nitrogen lone pairs to the π* orbital of the naphthalene group and the phenyl group, respectively. Comparing with butylamino substitutes, phenylated ones exhibit a red-shift in both absorption and emission for their electron-donating phenyl groups. The fluorescence quantum yields of the molecules were measured in THF. Cyclic voltammetric measurements demonstrated that the diaminonaphthalene derivatives possess two oxidation processes and the solid-state ionization potentials were estimated from the electrochemical potential. The phenylamino-naphthalenes possess higher ionization potentials than those of the alkylated ones. The relative HOMO and LUMO levels for these materials, important parameters for the design of efficient organic light-emitting or photovoltaic devices, were assessed through electrochemical and spectroscopic measurements.
Journal: Synthetic Metals - Volume 160, Issues 7–8, April 2010, Pages 599–603