Spectroscopy of self-trapped charge-transfer excitons in polar films and crystals of N,N-dimethylaminobenzylidene 1,3-indandione (DMABI)

Abstract

The origin of exciton states in crystals built up by dipolar N,N-dimethylaminobenzylidene 1,3-indandione (DMABI) molecules has been investigated by means of absorption and luminescence spectroscopy. The exciton spectral and dynamical properties in the solid state are compared to those of the excitation of separated DMABI molecules embedded in a rigid polymer matrix. The luminescence excitation spectra and the luminescence decay kinetics are discussed on the basis of the speciÐc adiabatic potential-energy scheme of the self-trapped excitons.

T‐Shaped (Donor–π–)2Acceptor–π–Donor Push–Pull Systems Based on Indan‐1,3‐dione

“…Representative T-shaped molecules have mostly been built from heterocyclic T-junctions such as pyrene-spiropyran, [26] benzo [d]imidazole, [27] quinoxaline, [28] phenazine, [29] or carbazole. [30] Despite the immense and unfading interest in indan-1,3-dione-derived push-pull molecules, [16][17][18][19][20][21][22][23][24]31] no attempts have been directed towards the modification of indan-1,3-dione fused to a benzene ring to gain access to T-shaped molecules.…”

A combined experimental and theoretical approach for structural study on a new cinnamoyl derivative of 2-acetyl-1,3-indandione and its metal(II) complexes

“…Recent studies have also focused on excited state twisting, as for N,N-dimethylaminobenzylidene-1,3-indandione [4,5], its solid-state optical properties [5,6] and application as non-linear optical materials [7].…”

Cu(II) complexes of 4- and 5- nitro-substituted heteroaryl cinnamoyl derivatives and determining their anticoagulant activity

“…A series of new Cu(II), Zn(II), Pb(II) Cd(II) complexes of 2AID were synthesized and based on NMR (in solution and solid state) and EPR spectroscopy for paramagnetic complexes were characterized [19]. Some of the studies concern excited state twisting, as for N,Ndimethylaminobenzylidene-1,3-indandione and derivatives [20][21][22]. Recently, selective electrochemical fluorination (SEF) of 1-indanone, 2-indanone and 1,3-indandione were carried out in Et 3 N.4HF ionic liquid by Ilayaraja and Noel [23].…”