DCM	4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran
LE	locally-excited
ICT	intramolecular charge transfer
DMA	dimethylamino
DMAP	dimethylaminophenyl
TICT	“twisted” ICT
PICT	“planar” ICT
CS INDO	conformation spectra-intermediate neglect of differential overlap
MRCI	multi references configuration interaction
CASSCF	complete active space self-consistent-field
DFT	density functional theory
TDDFT	time-dependent density functional theory
CT	charge-transferred
DMSO	dimethylsulfoxide
FSRS	femtosecond stimulated Raman spectroscopy
DMABN	4-(dimethylamino)benzonitrile
CHCl3	chloroform
EADS	evolution associated difference spectra
ph	phenyl
py	pyran
ps	picosecond
fs	femtosecond
PCM	polarized continuum model
CCD	charge-coupled device