Excitation Energy Transfer Supported Amplified Charge-Transfer Emission in an Anthracenedicarboxylate- and Bipyridophenazine-Based Coordination Complex.
Komal PrasadDebabrata SamantaRitesh HaldarTapas Kumar MajiPublished in: Inorganic chemistry (2018)
A highly luminescent tetrameric zinc(II) complex, {[Zn4(adc)3(bpz)6(HCOO)2]·2H2O} (1; adc = 9,10-anthracenedicarboxylate and bpz = bipyridophenazine), was synthesized by a solvothermal technique and characterized by single-crystal X-ray diffraction. The linear tetrameric units extend into three dimensions via π stacking of adc/bpz and bpz/bpz and multiple CH-π interactions. The compound shows strong red emission at 597 nm (λex = 480 nm), which is attributed to charge-transfer (CT) emission within an adc/bpz donor-acceptor pair. This is also supported by density functional theory computations. Interestingly, the CT emission is amplified by energy transfer from another adc linker that is not involved in the CT interaction.
Keyphrases
- energy transfer
- contrast enhanced
- diffusion weighted
- diffusion weighted imaging
- dual energy
- density functional theory
- quantum dots
- computed tomography
- magnetic resonance imaging
- image quality
- magnetic resonance
- solid state
- photodynamic therapy
- molecular dynamics
- positron emission tomography
- high resolution
- risk assessment
- heavy metals
- pet ct
- solar cells
- neural network