Phenylethynylanthracene based push–pull molecular systems: tuning the photophysics through para-substituents on the phenyl ring

Abstract

Organic push-pull molecules contain donor and acceptor moieties connected via π-linkages through which intramolecular electron charge transfer (ICT) can occur in the ground and excited states; giving these molecules interesting...

Solid-State Self-Assembly: Exclusive Formation and Dynamic Interconversion of Discrete Cyclic Assemblies Based on Molecular Tweezers

“…In contrast, hexamer ( 2c ) 6 , which contains TMSE groups, exhibits characteristic bright yellowish green fluorescence (λ em = 538 nm; Φ F = 16%). The emission lifetime of ( 2c ) 6 was determined to be 3.1 ns (Figure S12); thus, this unique yellowish green fluorescence was attributed to the ethynyl-substituted anthracene …”

“…The emission lifetime of ( 2c ) 6 was determined to be 3.1 ns ( Figure S12 ); thus, this unique yellowish green fluorescence was attributed to the ethynyl-substituted anthracene. 49 …”

“…The emission lifetime of (2c) 6 was determined to be 3.1 ns (Figure S12); thus, this unique yellowish green fluorescence was attributed to the ethynylsubstituted anthracene. 49 The thermal stability of the assemblies was evaluated via thermogravimetry−differential thermal analysis (TG−DTA) (Figures 4c and S13). For (2c) 6 , an endothermic trough due to the melting point (i.e., the disassembly temperature) appeared at ∼210 °C, similar to that observed for nonsubstituted hexamer (1) 6 .…”