TY - JOUR
T1 - Detection of amine gases by inverse opal photonic crystals infiltrated with precursor HPQ-Ac of aggregation-induced emission luminogen
AU - Murakami, Hiroaki
AU - Sawada, Mana
AU - Kimura, Taiki
AU - Takahara, Toshiki
AU - Onodera, Takeshi
N1 - Funding Information:
This study was in part assisted by JSPS Grant‐in‐Aid for Scientific Research (C‐JP19K04427). High‐magnification SEM observation was carried out with SU8000 microscope of the Center of Advanced Instrumental Analysis, Kyushu University.
Publisher Copyright:
© 2020 Wiley Periodicals LLC
PY - 2021/6
Y1 - 2021/6
N2 - In this study, to detect amine gases such as ammonia, a kind of biological gas, with high sensitivity, we fabricated a device that combines an inverse opal photonic crystal (IOPC) and 2-(4-oxo-3,4-dihydroquinazolin-2-yl)phenyl acetate (HPQ-Ac), a precursor of the aggregation-induced emission luminogen. IOPC silica structures (200IOPC, 350IOPC, 500IOPC) with SiO2 were respectively obtained after calcination with 200, 350, and 500 nm polystyrene (PS) nanoparticles used as templates and tetraethyl orthosilicate (TEOS) formed by self-assembly on a slide glass. Furthermore, mesopore-introduced IOPC (50 nm-350IOPC) was prepared by mixing 350 and 50 nm PS particles in TEOS solution. Each IOPC was infiltrated with HPQ-Ac, reacted with ammonia, and the rate of change in emission intensity owing to fluorescence was examined. The highest response was obtained for 350IOPC infiltrated with HPQ-Ac among the three IOPCs without mesopores. The 50 nm-350IOPC had higher sensitivity than 350IOPC and was found to be able to detect 50 ppb ammonia gas.
AB - In this study, to detect amine gases such as ammonia, a kind of biological gas, with high sensitivity, we fabricated a device that combines an inverse opal photonic crystal (IOPC) and 2-(4-oxo-3,4-dihydroquinazolin-2-yl)phenyl acetate (HPQ-Ac), a precursor of the aggregation-induced emission luminogen. IOPC silica structures (200IOPC, 350IOPC, 500IOPC) with SiO2 were respectively obtained after calcination with 200, 350, and 500 nm polystyrene (PS) nanoparticles used as templates and tetraethyl orthosilicate (TEOS) formed by self-assembly on a slide glass. Furthermore, mesopore-introduced IOPC (50 nm-350IOPC) was prepared by mixing 350 and 50 nm PS particles in TEOS solution. Each IOPC was infiltrated with HPQ-Ac, reacted with ammonia, and the rate of change in emission intensity owing to fluorescence was examined. The highest response was obtained for 350IOPC infiltrated with HPQ-Ac among the three IOPCs without mesopores. The 50 nm-350IOPC had higher sensitivity than 350IOPC and was found to be able to detect 50 ppb ammonia gas.
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U2 - 10.1002/ecj.12300
DO - 10.1002/ecj.12300
M3 - Article
AN - SCOPUS:85097617047
SN - 1942-9533
VL - 104
JO - Electronics and Communications in Japan
JF - Electronics and Communications in Japan
IS - 2
M1 - e12300
ER -