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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 02819naa a2200361 4500 | |
| 001 | oai:DiVA.org:kth-17775 | |
| 003 | SwePub | |
| 008 | 100805s2008 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177752 URI |
| 024 | 7 | a https://doi.org/10.1002/chem.2007018682 DOI |
| 040 | a (SwePub)kth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Zhao, Guang-Jiu4 aut |
| 245 | 1 0 | a Photoinduced intramolecular charge transfer and S-2 fluorescence in thiophene-pi-conjugated donor-acceptor systems :b Experimental and TDDFT studies |
| 264 | 1 | b Wiley,c 2008 |
| 338 | a print2 rdacarrier | |
| 500 | a QC 20100525 | |
| 520 | a Experimental and theoretical methods were used to study newly synthesized thiophene-pi-cojugated donor-acceptor compounds, which were found to exhibit efficient intramolecular charge-transfer emission in polar solvents with relatively large Stokes shifts and strong solvatochromism. To gain insight into the solvatochromic behavior of these compounds, the dependence of the spectra on solvent polarity was studied on the basis of Lippert-Mataga models. We found that intramolecular charge transfer in these donor-acceptor systems is significantly dependent on the electron-with-drawing substituents at the thienyl 2-position. The dependence of the absorption and emission spectra of these compounds in methanol on the concentration of trifluoroacetic acid was used to confirm intramolecular charge-tranfer emission. Moreover, the calculated absorption and emission energies, which are in accordance with the experimental values, suggested that fluorescence can be emitted from different geometric confirmations. In addition, a novel S-2 fluorescence phenomenon for some of these compounds was also be observed. The fluorescence excitation spectra were used to confirm the S-2 fluorescence. We demonstrate that S-2 fluorescence can be explained by the calculated energy gap between the S-2 and S-1 states of these molecules. Furthermore, nonlinear optical behavior of the thiophene-pi-conjugated compound with diethylcyanomethylphosphonate substituents was predicted in theory. | |
| 700 | 1 | a Chen, Rui-Kui4 aut |
| 700 | 1 | a Sun, Meng-Tao4 aut |
| 700 | 1 | a Liu, Jian-Yong4 aut |
| 700 | 1 | a Li, Guang-Yue4 aut |
| 700 | 1 | a Gao, Yun-Ling4 aut |
| 700 | 1 | a Han, Ke-Li4 aut |
| 700 | 1 | a Yang, Xi-Chuan4 aut |
| 700 | 1 | a Sun, Lichengu KTH,Organisk kemi4 aut0 (Swepub:kth)u1umfd9h |
| 710 | 2 | a KTHb Organisk kemi4 org |
| 773 | 0 | t Chemistry - A European Journald : Wileyg 14:23, s. 6935-6947q 14:23<6935-6947x 0947-6539x 1521-3765 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-17775 |
| 856 | 4 8 | u https://doi.org/10.1002/chem.200701868 |
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