Abstract
This paper presents a fabrication method of hollow polymeric nanocapsules (HPNCs). The HPNCs were examined to reduce light trapping in an organic light emitting diodes (OLED) device by increasing the refractive index contrast. They were continuously fabricated by the sequential process of self-assembly and photo-crosslinking of an amphiphilic block copolymer of SBR-b-PEGMA, poly(styrene-r-butadiene)-b-poly(poly(ethylene glycol) methyl ether methacrylate) in a flow-focusing microfluidic device. After the photo-crosslinking process, the produced HPNCs have a higher resistance to water and organic solvents, which is applicable to the fabrication process of optical devices. The morphology and hollow structure of the produced nanocapsules were determined by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Also, their size control was examined by varying the ratio of inlet flow rates and the morphological difference was studied by changing the polymer concentration. The size was measured by dynamic light scattering (DLS). The refractive index of the layer with and without the HPNCs was measured, and a lower refractive index was obtained in the HPNCs-dispersed layer. In future work, the light extraction efficiency of the HPNCs-dispersed OLED will be examined.
| Original language | English |
|---|---|
| Article number | 1892 |
| Journal | Molecules |
| Volume | 22 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2017 Nov 1 |
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Keywords
- Block copolymer
- Hollow nanocapsules
- Light trapping
- OLED
ASJC Scopus subject areas
- Analytical Chemistry
- Chemistry (miscellaneous)
- Molecular Medicine
- Pharmaceutical Science
- Drug Discovery
- Physical and Theoretical Chemistry
- Organic Chemistry
Cite this
Continuous preparation of hollow polymeric nanocapsules using self-assembly and a photo-crosslinking process of an amphiphilic block copolymer. / Nguyen, Xuan Don; Nguyen, Hyeong Jin Jeon; Nguyen, Van Tien Nguyen; Nguyen, Dong Hyeok Park; Lee, Tae Heon; Paik, Hyun Jong; Huh, June; Go, Jeung Sang.
In: Molecules, Vol. 22, No. 11, 1892, 01.11.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Continuous preparation of hollow polymeric nanocapsules using self-assembly and a photo-crosslinking process of an amphiphilic block copolymer
AU - Nguyen, Xuan Don
AU - Nguyen, Hyeong Jin Jeon
AU - Nguyen, Van Tien Nguyen
AU - Nguyen, Dong Hyeok Park
AU - Lee, Tae Heon
AU - Paik, Hyun Jong
AU - Huh, June
AU - Go, Jeung Sang
PY - 2017/11/1
Y1 - 2017/11/1
N2 - This paper presents a fabrication method of hollow polymeric nanocapsules (HPNCs). The HPNCs were examined to reduce light trapping in an organic light emitting diodes (OLED) device by increasing the refractive index contrast. They were continuously fabricated by the sequential process of self-assembly and photo-crosslinking of an amphiphilic block copolymer of SBR-b-PEGMA, poly(styrene-r-butadiene)-b-poly(poly(ethylene glycol) methyl ether methacrylate) in a flow-focusing microfluidic device. After the photo-crosslinking process, the produced HPNCs have a higher resistance to water and organic solvents, which is applicable to the fabrication process of optical devices. The morphology and hollow structure of the produced nanocapsules were determined by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Also, their size control was examined by varying the ratio of inlet flow rates and the morphological difference was studied by changing the polymer concentration. The size was measured by dynamic light scattering (DLS). The refractive index of the layer with and without the HPNCs was measured, and a lower refractive index was obtained in the HPNCs-dispersed layer. In future work, the light extraction efficiency of the HPNCs-dispersed OLED will be examined.
AB - This paper presents a fabrication method of hollow polymeric nanocapsules (HPNCs). The HPNCs were examined to reduce light trapping in an organic light emitting diodes (OLED) device by increasing the refractive index contrast. They were continuously fabricated by the sequential process of self-assembly and photo-crosslinking of an amphiphilic block copolymer of SBR-b-PEGMA, poly(styrene-r-butadiene)-b-poly(poly(ethylene glycol) methyl ether methacrylate) in a flow-focusing microfluidic device. After the photo-crosslinking process, the produced HPNCs have a higher resistance to water and organic solvents, which is applicable to the fabrication process of optical devices. The morphology and hollow structure of the produced nanocapsules were determined by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Also, their size control was examined by varying the ratio of inlet flow rates and the morphological difference was studied by changing the polymer concentration. The size was measured by dynamic light scattering (DLS). The refractive index of the layer with and without the HPNCs was measured, and a lower refractive index was obtained in the HPNCs-dispersed layer. In future work, the light extraction efficiency of the HPNCs-dispersed OLED will be examined.
KW - Block copolymer
KW - Hollow nanocapsules
KW - Light trapping
KW - OLED
UR - http://www.scopus.com/inward/record.url?scp=85033795612&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85033795612&partnerID=8YFLogxK
U2 - 10.3390/molecules22111892
DO - 10.3390/molecules22111892
M3 - Article
C2 - 29099801
AN - SCOPUS:85033795612
VL - 22
JO - Molecules
JF - Molecules
SN - 1420-3049
IS - 11
M1 - 1892
ER -