Design, synthesis and photophysical investigation of triphenylamine-bithiophene dyes as RGB emitters for white light applications
作者： Athira Krishna , E. Varathan , Padincharapad Sreedevi , V. Subramanian , Venugopal Karunakaran
DOI: 10.1016/J.DYEPIG.2018.06.001
关键词:
摘要: Abstract A set of three triphenylamine-bithiophene based Donor-Acceptor (D-A) molecules viz. TPT, TPT-Ben and TPT-Ac were designed, synthesized studied for their photophysical properties. Systematic density functional theory (DFT) calculations have been performed on the to gain insights into structural, electronic optical The nanosecond transient absorption spectra showed broad due presence triphenylamine radical cation with an average time constant 3.5 μs found emit in Blue, Green Orange-Red regions visible spectrum differences Stokes shift values. 3:2:1 mixture gave white light emission a colour coordinate (0.32, 0.36) even at μM level concentration both solution state (DMSO) as well solid (0.33,0.37).
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