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- W1978211100 abstract "The picosecond transient infrared spectrum of the excited charge-transfer (CT) state of 4-(pyrrol-1-yl)benzonitrile (PBN) has been recorded in the frequency range of 1700−920 cm-1. The CT state of PBN gives several quite strong infrared bands. The band at 1219 cm-1 shifts toward the high-frequency side with increasing delay time between pump and probe pulses. This frequency shift is attributed to vibrational relaxation. Some of the transient bands (1429, ∼1290, 1219, and 964 cm-1) are very close in frequencies to those observed for the benzonitrile moiety of the excited CT state of 4-(dimethylamino)benzonitrile (DMABN). This finding implies that the benzonitrile groups of PBN and DMABN are decoupled from the electron-donating (pyrrole or dimethylamino) groups, and it can be explained by the twisted intramolecular charge-transfer model. To make this point clear, however, further discussion is necessary on the band assignments and on correlation between structure and spectral pattern." @default.
- W1978211100 created "2016-06-24" @default.
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- W1978211100 date "2002-01-18" @default.
- W1978211100 modified "2023-10-18" @default.
- W1978211100 title "Picosecond Infrared Spectrum of 4-(Pyrrol-1-yl)benzonitrile: Structure of the Excited Charge-Transfer States of Donor−Acceptor Systems" @default.
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- W1978211100 doi "https://doi.org/10.1021/jp0126098" @default.
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