872705-68-5Relevant academic research and scientific papers
Molecular packing and morphological stability of dihydro-indeno[1,2-: B] fluorenes in the context of their substitution pattern
Hempe,Reggelin
, p. 47183 - 47189 (2017)
The synthesis of a series of dihydroindeno[1,2-b]fluorene (IF) derivatives with various side chain substituents is reported, these have been investigated by single-crystal X-ray analysis in terms of their molecular packings and the thermal stability of these morphologies observed by DSC measurements. It is shown that symmetrically substituted IFs bearing longer linear aliphatic side chains tend to crystallize in thermolabile coplanar layers, in which the aliphatic and dihydroindeno[1,2-b]fluorene core segments are spatially segregated. In contrast to that, the attachment of aryl side chains to the dihydroindenofluorene core results in a stabilization of the cofacial morphology, which can be observed by the absence of thermal phase transitions. In addition to this, asymmetrically substituted derivatives, so called "mixed indenofluorenes" (MIFs), bearing pairwise linear aliphatic side chains of variable length, as well as aryl substituents have been synthesized. These derivatives tend to exhibit thermostable morphologies with an enhanced tendency to form edge-to-face contacts of the dihydroindenofluorene structures.
Synthesis and two-photon properties of a multipolar chromophore containing indenofluorenyl units
Lin, Tzu-Chau,Hsu, Cheng-Sheng,Hu, Chia-Ling,Chen, Yong-Fu,Huang, Wei-Je
supporting information; experimental part, p. 182 - 185 (2009/04/19)
A new multipolar fluorophore derived from triphenylamine as the core with diphenylaminoindenofluorenyl moieties incorporated at the peripheral positions has been synthesized and experimentally shown to possess strong two-photon absorptivities in near-IR region and intense upconverted visible emission under the irradiation of femtosecond laser pulses.
