In this work we report the synthesis, electrochemical and optical properties of five new, star shaped compounds containing both carbazole and triphenylamine moieties, further endcapped with thiophene or 3,4-ethylenedioxythiophene units.
With the aim to tune the optoelectronic, charge transport and nonlinear optical properties, four novel star shaped compounds were designed from the initial structure 4,6-di anthracenothiophen-2-yl pyrimidine (DATP).
As the intermedius alkyl chain of the star-shaped compounds lengthened (from n = 2 to n = 8), their melting points decreased but mesomorphic temperature ranges increased.
Nine star-shaped compounds containing six, seven and eight pentacyclic triterpene pharmacophore on cyclodextrin scaffold were prepared by way of copper-catalyzed azide-alkyl cycloaddition reaction under microwave activation.
The star-shaped compounds emit light in the deep blue region (385 412 nm) and their solutions exhibit moderately high fluorescence quantum yields in the range of 0.40 0.54.
Two new star-burst compounds based on 1,3,5-triazine core and carbazole end-capped phenylene ethynylene arms (1a and 1b) were synthesized and characterized.
All the three star-shaped compounds possess high thermal stability with the temperatures of the onsets of thermal degradation around 400 °C and glass formation ability with close glass transition temperatures (56 61 °C).
If all three variants are present, the hexagonal to orthorhombic transformation results in a number of unique multi-domain structures such as the star patterns, compound star patterns, fan patterns, etc., which have been frequently observed experimentally in systems undergoing hexagonal to orthorhombic or similar transformations.
To explore the structure-property of donor-acceptor (D-A) type blue emitter, in this contribution, four star-shaped compounds of p-TPA, m-TPA, p-TPA-TPE and m-TPA-TPE using spirotriphenylamine as the donor unit and triazine as the acceptor core were designed and prepared.
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