supporting information · minsu kim,†‡a,b r. k. mishra,† a ramesh manda,a g. murali,a...
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![Page 1: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/1.jpg)
Supporting Information
A reduced graphene oxide (RGO) enriched polymer network for highly-enhanced electro-optic performance of a liquid crystalline blue phase
MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung Hee Lee*a
a. Applied Materials Institute for BIN Convergence, Department of BIN Convergence Technology and Department of Polymer-Nano Science and Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea.b. Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.c. Graduate School of Flexible & Printable Electronics Engineering, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea.d. Department of Electrical and Computer Engineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA.e. Department of BIN Convergence Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea.f. Department of Organic Materials & Fiber Engineering and Department of BIN Convergence Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea.
* Prof. Seung Hee Lee, [email protected]; Tel: +82-63-270-2343. † These authors contributed equally to this work.‡ Current affiliation: Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA.†Electronic Supplementary Information (ESI) available: Polarizing optical micrographes and electro-optic characterization of various concentration of RGO. See DOI: 10.1039/x0xx00000x
*Correspondence to Prof. Seung Hee Lee, [email protected], Tel: +82-63-270-2343
Electronic Supplementary Material (ESI) for RSC Advances.This journal is © The Royal Society of Chemistry 2017
![Page 2: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/2.jpg)
Fig. S1. POM images of polymer stabilized blue phase liquid crystal (PSBP) at temperatures (a) 71.8 C, (b) 71.9 C, (c) 72.5 C, (d) 73.1 C, (e) 81.0 C, (f) 82.0 C and (g) 82.1 C, respectively. Scale bar is 50 m.
![Page 3: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/3.jpg)
Fig. S2. POM images of PSBP-RGO-0.1wt% at (a) 70.9 C, (b) 71.0 C, (c) 71.1 C, (d) 74.1 C, (e) 76.1 C, (f) 82.1 C and (g) 82.2 C. Scale bar is 50 m.
![Page 4: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/4.jpg)
Fig. S3. POM images of PSBP-RGO-0.2wt% at temperatures (a) 70.4 C, (b) 70.6 C, (c) 71.0 C, (d) 78.5 C, (e) 81.5 C, (f) 82.2 C and (g) 82.3 C, respectively. Scale bar is 50 m.
![Page 5: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/5.jpg)
Fig. S4. Measured (a) V-T curves, and (b) the response times of PSBP cell at 74 C. Insets in (a, b) shows POM images in voltage on and off states at operating voltage 60 Vrms.
![Page 6: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/6.jpg)
Fig. S5. Measured (a) V-T curves, and (b) the response times of PSBP-RGO-0.05wt% cell at 74 C. Insets are POM images in voltage on and off states at operating voltage 53 Vrms.
![Page 7: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/7.jpg)
Fig. S6. Measured (a) V-T curves, and (b) the response times of PSBP-RGO-0.1wt% cell at 74 C. Insets are POM images in voltage on and off states at operating voltage 48 Vrms.
![Page 8: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/8.jpg)
Fig. S7. Measured (a) V-T curves, and (b) the response times of PSBP-RGO-0.2wt% cell at 74 C. Insets in (a, b) shows POM images in voltage on and off states at operating voltage 41 Vrms.
![Page 9: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/9.jpg)
Fig. S8. POM images of (a) PSBP, (b) PSBP-RGO-0.05wt%, and (c) PSBP-RGO-0.2wt% cells during switching on-off at operating voltages 60 Vrms, 53 Vrms and 41 Vrms, respectively. Scale bar is 50 m.
![Page 10: Supporting Information · MinSu Kim,†‡a,b R. K. Mishra,† a Ramesh Manda,a G. Murali,a Tae-Hyung Kim,c Myong-Hoon Lee,c Minhee Yun,d Sudarshan Kundu,e Byoung-Suhk Kim,f and Seung](https://reader034.vdocuments.site/reader034/viewer/2022050204/5f57f81487fd586e1168d024/html5/thumbnails/10.jpg)
Fig. S9. Characterization of the synthesized RGO: (a) TEM; (b) HR-TEM images; (c) SAED pattern; (d) XRD spectrum; (e) XPS spectrum (C1s peak). Scale bars are (a) 200 nm; (b) 10 nm. Molecular structure of the chiral dopants and pre-polymers: (f) SRM-17; (g) SRM-3; (h) RM-257.