| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
디스플레이 |
| 제목 |
Effects of π-conjugation structure changes on intramolecular charge transfer and photoinduced electron transfer in donor- π -acceptor dyads |
| 초록 |
The influence of π-conjugation structural changes on photoinduced electron transfer (PET) and intramolecular charge transfer (ICT) processes in D-π-A was investigated. Three types of D-π-A dyads [D-π-A (1), D-πtw-A (2), and D-π-Si-π-A (3)] were prepared. The emission maxima of dyads 1 and 3 red-shifted with the increase in polarity, which could be attributed to the ICT process. The fluorescence lifetimes for dyads 1 and 3 were 2.64 and 4.29 ns. In contrast, dyad 2 showed dual emission at 350 and 470 nm. The emission of dyad 2 at 380 nm corresponded to the monomer fluorescence in the locally excited state. The low emission quantum yield (＜3%) of dyad 2 is due to the PET process. In dyad 2, the cationic and anionic radical species generated by the PET process were confirmed by femtosecond transient absorption spectroscopy. |
| 저자 |
김종훈, 김소연, 손미랑, 김진형, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
conjugation effect; charge-transfer
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| E-Mail |
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