Liquid crystal microcapillary-based sensors for affordable analytical applications

Date

2022-04-01

Author

Kurt, Elif
Büküşoğlu, Emre

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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URI

https://hdl.handle.net/11511/97621

Journal

SOFT MATTER

DOI

https://doi.org/10.1039/d2sm00131d

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Department of Chemical Engineering, Article

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Liquid crystal-based microcapillary sensors Kurt, Elif; Büküşoğlu, Emre; Department of Chemical Engineering (2022-1-21) Stimuli-responsive properties of liquid crystals (LCs), when combined with their optical properties, offer sensitive and rapid sensing applications. In the first part of this thesis study, we propose and demonstrate a microcapillary-based method to be applied for the online detection of amphiphilic species, which can be further used for biological and chemical species in aqueous media. Specifically, we used compartments (300-1400 µm) of nematic 4-cyano-4’-pentylbiphenyl (5CB) that is positioned into cylindr...
Liquid Crystal-Templated Synthesis of Anisotropic Ultrafiltration Membranes Karausta, Aslı; Büküşoğlu, Emre (2018-08-30) In this study, we developed a method that provides determination ofthe internal structure of the polymeric films by using LCs as template. For thesynthesis of the material, we photopolymerized the mixture of reactive(4-(3-acryloyoxypropyloxy) benzoic acid 2-methyl-1,4-phenylene ester (RM257))and non-reactive (4-cyano-4′-pentylbiphenyl (5CB)) mesogens confined in filmgeometries with thickness of 20-200 µm, and then extracted nonreactive mesogenswith solvent to yield polymeric films of area in the order of 10...
Liquid Crystal-Templated Synthesis of Mesoporous Membranes with Predetermined Pore Alignment Karausta, Asli; Büküşoğlu, Emre (American Chemical Society (ACS), 2018-10-03) We demonstrate that polymeric films templated from liquid crystals (LCs) provide basic design principles for the synthesis of mesoporous films with predetermined pore alignment. Specifically, we used LC mixtures of reactive [4-(3-acryloyoxypropyloxy) benzoic acid 2-methyl-1,4-phenylene ester (RM257)] and nonreactive [4-cyano-4'-pentylbiphenyl (5CB)] mesogens confined in film geometries. The LC alignment was maintained by functionalization of the surfaces contacting the films during polymerization. Through p...
Liquid Crystal Templates Combined with Photolithography Enable Synthesis of Chiral Twisted Polymeric Microparticles AKDENİZ, BURAK; Büküşoğlu, Emre (Wiley, 2019-08-01) Liquid crystals (LC), when combined with photolithography, enable synthesis of microparticles with 2D and 3D shapes and internal complexities. Films of nematic LCs are prepared using mixtures of reactive (RM257) and non-reactive mesogens with controlled alignment of LCs at the confining surfaces, photo-polymerized the RM257 using a photomask, and then extracted the unreacted mesogens to yield the polymeric microparticles. The extraction results in a controlled anisotropic shrinkage amount dependent on the R...
Liquid crystal-templated synthesis of polymeric microparticles with complex nanostructures Akdeniz, Burak; Büküşoğlu, Emre; Department of Chemical Engineering (2019) Liquid crystals (LC), when combined with photolithography, enable synthesis of microparticles with two- and three-dimensional shapes and internal complexities. We prepared films of nematic LCs using mixtures of reactive (RM257) and non-reactive mesogens (E7) with controlled alignment of LCs at the confining surfaces, photopolymerized the RM257 using a photomask, and then extracted the unreacted mesogens to yield polymeric microparticles. The extraction resulted in a controlled anisotropic shrinkage with an ...

Citation Formats

E. Kurt and E. Büküşoğlu, “Liquid crystal microcapillary-based sensors for affordable analytical applications,” SOFT MATTER, vol. 18, pp. 4009–4016, 2022, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/97621.