851608-72-5

Upstream product

• 7732-18-5 water 
• 654065-52-8 1-bromo-3,4,5-tris-n-dodecyloxybenzene 
• 121-43-7 Trimethyl borate 
• 16492-75-4 5-bromo-1,2,3 trihydroxybenzene 
• 1014621-87-4 5-iodo-1,2,3-trihydroxybenzene 
• 25245-29-8 5-iodo-1,2,3-trimethoxybenzene 
• 24313-88-0 3,4,5-Trimethoxyaniline 
• 851608-71-4 3,4,5-tris(n-dodecan-1-yloxy)-1-iodobenzene 
• 87-66-1 2-hydroxyresorcinol 
• 151237-05-7 3,4,5-tris(dodec-1-yloxy)aniline 
• 151237-01-3 3,4,5-tris(n-dodecan-1-yloxy)-1-nitrobenzene 
• 151237-08-0 1,2,3-tris(n-dodecan-1-yloxy)benzene 
• 143-15-7 1-dodecylbromide 

Relevant academic research and scientific papers

Structural Monitoring of the Onset of Excited-State Aromaticity in a Liquid Crystal Phase

Aromaticity of photoexcited molecules is an important concept in organic chemistry. Its theory, Baird's rule for triplet aromaticity since 1972 gives the rationale of photoinduced conformational changes and photochemical reactivities of cyclic π-conjugated systems. However, it is still challenging to monitor the dynamic structural change induced by the excited-state aromaticity, particularly in condensed materials. Here we report direct structural observation of a molecular motion and a subsequent packing deformation accompanied by the excited-state aromaticity. Photoactive liquid crystal (LC) molecules featuring a π-expanded cyclooctatetraene core unit are orientationally ordered but loosely packed in a columnar LC phase, and therefore a photoinduced conformational planarization by the excited-state aromaticity has been successfully observed by time-resolved electron diffractometry and vibrational spectroscopy. The structural change took place in the vicinity of excited molecules, producing a twisted stacking structure. A nanoscale torque driven by the excited-state aromaticity can be used as the working mechanism of new photoresponsive materials.

The liquid crystal Click procedure for oligothiophene-Tethered phthalocyanines-self-Assembly, alignment and photocurrent

A series of star-shaped liquid crystals (LCs) with a phthalocyanine donor core, oligothiophene antennae and fullerene acceptors have been successfully prepared. This hierarchical self-Assembly results in a nanosegregated helical donor-Acceptor-Antennae LC-system promoted by the recently discovered Click procedure. This model system reveals all photophysical prerequisites for energy conversion, charge generation and transport. Uniform amorphous thin films of 150 nm could be produced by bar-coating. Annealing did not only induce the formation of columns via the Click procedure but also partially homeotropically aligned the non-clearing sample in a sandwich geometry (ITO and Ag/MoO3). This has been confirmed by microscopic studies and the measurement of photocurrent, which increased by a factor of 300 after the annealing step.

Synthesis and Liquid Crystalline Self-Assembly of Concave Diindoles with a Hydropentalene Core

Fischer indole reaction of Weiss diketone with 4-bromophenylhydrazine provided the 2,8-dibromo-hexahydropentaleno[2,1-b:5,4-b’]diindole key intermediate, which was converted to the target compounds by N-protection/Suzuki cross-coupling. Variation of prote

Liquid crystals from shape-persistent porphyrin stars with intrinsic free space

A small library of shape-persistent, conjugated star-shaped liquid crystals (LCs) with a zinc porphyrin core was successfully synthesized. Different conjugated arms are attached in themeso-positions. The self-assembly is at the limit between liquid crystals and soft crystal phases owing to the space-filling requirement. A model indicates the formation of dimers in double helices. A remarkable mesogen with thiophene linked directly to the porphyrin core generates J-aggregates in solution, which persist in the solid state. In the liquid crystal the J-aggregates disappear but can be reversibly reobtained by solvent treatment.

Substituent-Dependent Magnetic Behavior of Discotic Benzo[e][1,2,4]triazinyls

Discotic mesogens containing the benzo[e][1,2,4]triazinyl radical as the central unit exhibit a Colh phase below 80 °C. Depending on the substituent at the N(1) position, they show different modes of thermal expansion and magnetic behavior, pre

Assembly of twisted luminescent architectures based on acenaphtho[1,2-k]fluoranthene derivatives

Acenaphtho[1,2-k]fluoranthene derivatives DPAF-n as new building blocks for one-dimensional (1D) structure assembly have been developed and employed to fabricate luminescent twisted nano/micro-wires; and the DPAF rigid core attached via flexible alkyl cha

Synthesis, photonic characteristics, and mesomorphism of an oligo biphenylene vinylene π-electron system

(Chemical Equation Presented) The synthesis and photonic and liquid-crystalline properties of a novel oligo biphenylene vinylene (OBV) chromophore with an extended π-electron system are reported; the compound exhibits high fluorescence, a large two-photon