4-(Dimethylamino)butyronitrile

4-(Dimethylamino)benzonitrile(DMABN) can be used in the synthesis of 3,6-diphenyl-2,5-dihydro-pyrrolo[3,4-c]pyrrole-1,4-dione derivatives. DMABN is also used in photophysical studies due to its ability to undergo intramolecular charge transfer (ICT) from the dimethylamino moiety to the cyanophenyl moiety on photo-excitation leading to the appearance of dual fluorescence.

[1] ATTILA DEMETER Klaas A Z. Fluorescence of crystalline 4-(dimethylamino)benzonitrile. Absence of dual fluorescence and observation of single-exponential fluorescence decays[J]. Chemical Physics Letters, 2003, 380 5: Pages 699-703. DOI:10.1016/j.cplett.2003.09.073.
[2] JUSTIN M. RHINEHART David W M J Reddy Challa. Multimode Charge-Transfer Dynamics of 4-(Dimethylamino)benzonitrile Probed with Ultraviolet Femtosecond Stimulated Raman Spectroscopy[J]. The Journal of Physical Chemistry B, 2012, 116 35: 10522-10534. DOI:10.1021/jp3020645.