Synthesis of 3d chiral microparticles from nematic liquid crystal templates

Date

2018-08-30

Author

Akdeniz, Burak
Büküşoğlu, Emre

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Microparticles with complex structures canbe used for various areas such as drug delivery1, emulsionstabilization2, sensor applications, catalysis3 andseparation processes4. We report a new synthesis procedure whichinvolve the use of photolithography combined with liquid crystal templates.Specifically, mixtures of the reactive mesogen (RM257) and nonreactive liquidcrystal (E7) were polymerized using a UV light that was filtered with alithograpy mask. We used circular, triangular, rectangular, square shape, starshape and heart shape lithography masks to cover the shape library for thesynthesis of further macro-systems. The LC-monomer mixture was kept inside asandwich cell that allow manipulation of the alignment of the LCs within. Afterpolymerization, unreacted mesogens were extracted from polymeric microparticlesand allowed to shrink and maintain the final form of the microparticles. Weshowed that polymeric microparticles can be produced in 2D or 3D structures anddifferent sizes that range from 20 µm to 200 µm in length and 1.5 µm to 160 µmin thickness. We showed that theparticles of circular, elliptical, triangular, square, rectangular, star andheart shapes in 2D, and chiral particles in 3D can be synthesized.

URI

https://hdl.handle.net/11511/82908

Conference Name

Eastern Mediterranean Chemical Engineering Conference 9 (30 Ağustos - 01 Eylül 2018)

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Unverified, Conference / Seminar

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Citation Formats

B. Akdeniz and E. Büküşoğlu, “Synthesis of 3d chiral microparticles from nematic liquid crystal templates,” presented at the Eastern Mediterranean Chemical Engineering Conference 9 (30 Ağustos - 01 Eylül 2018), 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/82908.