2-Dimensional colloidal micropatterning of cholesteric liquid crystal microcapsules for temperature-responsive color displays

Woo Jin Lee; Bohyun Kim; Sang Woo Han; Minjeong Seo; Song-Ee Choi; Hakyeong Yang; Shin-Hyun Kim; Sohee Jeong; Jin Woong Kim

Journal of Industrial and Engineering Chemistry, Vol.68, 393-398, December, 2018

DOI10.1016/j.jiec.2018.08.014 Export Citation

2-Dimensional colloidal micropatterning of cholesteric liquid crystal microcapsules for temperature-responsive color displays

Woo Jin Lee¹, Bohyun Kim¹, Sang Woo Han¹, Minjeong Seo¹, Song-Ee Choi¹, Hakyeong Yang¹, Shin-Hyun Kim², Sohee Jeong³, and Jin Woong Kim^{1, 4, †}

¹Department of Bionano Technology, Hanyang University, Ansan 15588, Republic of Korea
²Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
³Korea National Industrial Convergence Center, Korea Institute of Industrial Technology, Ansan 15588, Republic of Korea
⁴Department of Chemical and Molecular Engineering, Hanyang University, Ansan 15588, Republic of Korea

E-mail:

This work offers a promising approach for development of a temperature-responsive colorimetric display platform. For this purpose, uniform thermochromic microcapsules consisting of a cholesteric liquid crystal (CLC) core and a thin polyurethane shell layer were fabricated by conducting in-situ condensation polymerization at the interface of monodisperse CLC-in-water emulsion drops. Colloidal packing-driven microcapsule registry led to exact 2-dimensional positioning of CLC microcapsules into a holes-patterned flexible film stencil. Furthermore, we showed that the designated registry of different color types of CLC microcapsules on the stencil enabled development of a microwriting display technology capable of reversible text representation according to temperature change.

Keywords:Microfluidics;Liquid crystals;Microcapsules;Colloidal array;Temperature-responsive sensor

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[1] Byrne C, Lim CL, Br. J. Sports Med., 41, 126 (2007)

[2] Chen S, Dong XL, Mao CL, Cao F, J. Am. Ceram. Soc., 89(10), 3270 (2006)

[3] Wang Y, Jia Y, Chen Q, Wang Y, Sensors, 8, 7982 (2008)

[4] Akre H, Skatvedt O, Eur. Arch. Otorhinolaryngol., 257, 251 (2000)

[5] Campbell GS, Ashcroft GL, Taylor SA, J. Appl. Meteorol., 3, 640 (1964)

[6] Brehmer M, Lub J, van de Witte P, Adv. Mater., 10(17), 1438 (1998)

[7] Fudouzi H, Xia YN, Adv. Mater., 15(11), 892 (2003)

[8] Fudouzi H, Xia YN, Langmuir, 19(23), 9653 (2003)

[9] Jiang P, Smith DW, Ballato JM, Foulger SH, Adv. Mater., 17(2), 179 (2005)

[10] Lu Y, Wei J, Shi Y, Jin O, Guo J, Liq. Cryst., 40, 581 (2013)

[11] Schneider T, Davis DJ, Franklin S, et al., New developments in flexible cholesteric liquid crystal displays presented at Integrated Optoelectronic Devices 2007; 2007.

[12] Crawford GP, Zumer S, Liquid Crystals in Complex Geometries: Formed by Polymer and Porous Networks, CRC Press, 1996.

[13] Yang DK, West JL, Chien LC, Doane JW, J. Appl. Phys., 76, 1331 (1994)

[14] Ireland P, Jones T, J. Phys. E, 20, 1195 (1987)

[15] Jeng SC, Hwang SJ, Hung YH, Chen SC, Opt. Express, 18, 22572 (2010)

[16] Liu P, Liu L, Jiang K, Fan S, Small, 7, 732 (2011)

[17] Sage I, Liq. Cryst., 38, 1551 (2011)

[18] Kazzaz J, Singh M, Ugozzoli M, Chesko J, Soenawan E, O’Hagan DT, J. Control. Release, 110, 566 (2006)

[19] Peyratout CS, Daehne L, Angew. Chem.-Int. Edit., 43, 3762 (2004)

[20] Sukhorukov G, Fery A, Mohwald H, Prog. Polym. Sci, 30, 885 (2005)

[21] Yeo Y, Park K, Arch. Pharm. Res., 27, 1 (2004)

[22] Darmon A, Benzaquen M, Sec D, Copar S, Dauchot O, Lopez-Leon T, Proc. Natl. Acad. Sci. U. S. A, 113, 9469 (2016)

[23] Geng Y, Noh J, Drevensek-Olenik I, Rupp R, Lenzini G, Lagerwall JP, Sci. Rep., 6, 26840 (2016)

[24] Noh J, Liang HL, Drevensek-Olenik I, Lagerwall JP, J. Mater. Chem. C, 2, 806 (2014)

[25] Schwartz M, Lenzini G, Geng Y, Rønne PB, Ryan PY, Lagerwall JP, Adv.Mater., 1707382 (2018).

[26] Moreira M, Carvalho I, Cao W, Bailey C, Taheri B, Palffy-Muhoray P, Appl. Phys. Lett., 85, 2691 (2004)

[27] Utada A, Lorenceau E, Link D, Kaplan P, Stone H, Weitz D, Science, 308, 537 (2005)

[28] Kim JW, Utada AS, Fernandez-Nieves A, Hu Z, Weitz DA, Angew. Chem., 119, 1851 (2007)

[29] Kim B, Han SW, Choi SE, Yim D, Kim JH, Wyss HM, Kim JW, Biomacromolecules, 9, 386 (2018)

[30] Lv K, Liu D, Li W, Tian Q, Zhou X, Dyes Pigment., 94, 452 (2012)

[31] Lee SS, Kim SK, Won JC, Kim YH, Kim SH, Angew. Chem., 127, 15481 (2015)

[32] Lee SS, Seo HJ, Kim YH, Kim SH, Adv. Mater., 29 (2017).

[33] Asoh H, Fujihara K, Ono S, Nanoscale Res. Lett., 7, 406 (2012)

[34] Suh KY, Kim YS, Lee HH, Adv. Mater., 13(18), 1386 (2001)

[35] Yin YD, Lu Y, Gates B, Xia YN, J. Am. Chem. Soc., 123(36), 8718 (2001)

[36] Fujikake H, Sato H, Murashige T, Displays, 25, 3 (2004)

[37] Tamaoki N, Adv. Mater., 13(15), 1135 (2001)

[38] Lu SY, Chien LC, Appl. Phys. Lett., 91, 131119 (2007)