کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5376730 | 1504329 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Excited S1 state dipole moments of nitrobenzene and p-nitroaniline from thermochromic effect on electronic absorption spectra
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Excited S1 state dipole moments of nitrobenzene and p-nitroaniline from thermochromic effect on electronic absorption spectra Excited S1 state dipole moments of nitrobenzene and p-nitroaniline from thermochromic effect on electronic absorption spectra](/preview/png/5376730.png)
چکیده انگلیسی
The effect of temperature on the absorption spectra of nitrobenzene (NB) and p-nitroaniline (NA) in 1,2-dichloroethane was studied for temperature ranging from 295 K to 378 K and from 296 K to 408 K, respectively. With temperature increase the absorption bands of both compounds are blue shifted, which is caused by the decrease of permittivity ε and refractive index n. From the band shifts and by using the Bilot and Kawski theory [ L. Bilot, A. Kawski, Z. Naturforsch. 17a (1962) 621] the dipole moments in the excited singlet state μe = 6.59 D of NB and μe = 13.35 D of NA were determined. The influence of polarizability α, the Onsager cavity radius a and dipole moment in the ground state μg on the determined values of μe are discussed. A comparison of the obtained μe values with those of other authors is given. In the case of p-NA a strong intramolecular charge transfer (ICT) was confirmed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 330, Issues 1â2, 8 November 2006, Pages 307-312
Journal: Chemical Physics - Volume 330, Issues 1â2, 8 November 2006, Pages 307-312
نویسندگان
A. Kawski, B. KukliÅski, P. Bojarski,