Fabrication of SiO2/PEGDA Inverse Opal Photonic Crystal with Fluorescence Enhancement Effects

Van-Phuc Dinh; Duy-Khoi Nguyen; Quang-Hung Nguyen; Thi-Thuy Luu; Thi Hai Yen Pham; Thi Thu Ha Vu; Han-Sheng Chuang; Hong-Phong Pham

doi:10.1155/2021/6613154

Fabrication of SiO₂/PEGDA Inverse Opal Photonic Crystal with Fluorescence Enhancement Effects

J Anal Methods Chem. 2021 Feb 23:2021:6613154. doi: 10.1155/2021/6613154. eCollection 2021.

Authors

Van-Phuc Dinh^{1

2}, Duy-Khoi Nguyen^{1

2}, Quang-Hung Nguyen^{2

3}, Thi-Thuy Luu^{1

2}, Thi Hai Yen Pham⁴, Thi Thu Ha Vu⁴, Han-Sheng Chuang⁵, Hong-Phong Pham^{4

6}

Affiliations

¹ Future Materials & Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City 700000, Vietnam.
² Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang 550000, Vietnam.
³ Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City 700000, Vietnam.
⁴ Institute of Chemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam.
⁵ Department of Biomedical Engineering, National Cheng Kung University, Tainan 701, Taiwan.
⁶ Graduate University of Science and Technology, 18- Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam.

Abstract

The present paper reports the fabrication of inverse opal photonic crystals (IOPCs) by using SiO₂ spherical particles with a diameter of 300 nm as an opal photonic crystal template and poly(ethylene glycol) diacrylate (PEGDA) as an inverse opal material. Characteristics and fluorescence properties of the fabricated IOPCs were investigated by using the Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), reflection spectroscopy, and fluorescence microscopy. The results clearly showed that the IOPCs were formed comprising of air spheres with a diameter of ∼270 nm. The decrease in size led to a decrease in the average refractive indexes from 1.40 to 1.12, and a remarkable stopband blue shift for the IOPCs was thus achieved. In addition, the obtained results also showed a fluorescence enhancement over 7.7-fold for the Fluor® 488 dye infiltrated onto the IOPCs sample in comparison with onto the control sample.