Journal
CHEMICAL COMMUNICATIONS
Volume 48, Issue 28, Pages 3424-3426Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc30569k
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Funding
- World class University (WCU)
- MEST through the NRF of Korea [R31-2008-10035-0]
- Seoul RBD program [WR090671]
- Grants-in-Aid for Scientific Research [22018017, 22245022, 21350075] Funding Source: KAKEN
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Novel boron dipyrromethene (BODIPY) derivatives having significant absorption and emission in the longer wavelength region were synthesized. BODIPY showed anomalous S-2 emission from the second excited (S-2) state at shorter wavelength. The photodynamics of the S-2 state was investigated by fluorescence up-conversion and transient absorption spectroscopic measurements. The decay time of the S-2 emission was dependent on the internal conversion and the intersystem crossing process. The assignments of transitions were supported by a theoretical calculation based on the time-dependent density functional theory.
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