Surface active flexible palladium nano-thin-film electrode development for biosensing

Chia Yu Chang; Yun Tzu Huang; Pang Chia Chang; Chien Hao Su; Kuo Chen Hsu; Xing Li; Cheng Han Wu; Chia-Ching Chang

doi:10.1016/j.inoche.2019.107461

Surface active flexible palladium nano-thin-film electrode development for biosensing

Chia Yu Chang, Yun Tzu Huang, Pang Chia Chang, Chien Hao Su, Kuo Chen Hsu, Xing Li, Cheng Han Wu, Chia-Ching Chang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Metal atoms on surface edges or with specific coordinates possess high surface potentials, and serve as core atoms for organic molecule bonding. However, these active metal atoms may lose their activity by self-diffusion on the surface. A polyethylene terephthalate (PET) substrate provided a stable rough surface in nanoscale for metal atoms absorption and formation of a stable and active nano-thin-film (NTF) surface. However, the NTF surface roughness decreased with increasing thickness of palladium (Pd) granules, indicating that the surface growth of the Pd film followed a Stranski-Krastanov-like growth model. Therefore, the proper thickness of Pd-NTF on PET substrate (Pd NTF-PET) was developed for electrochemical impedance spectroscopy (EIS). Protein was immobilized on the Pd NTF-PET electrodes within 15 min and its biosensing sensitivity was as low as 0.1 ng per-test in 1 μl. We expect that the developed Pd NTF-PET electrode can be used for other biosensing applications as well.

Original language	English
Article number	107461
Number of pages	6
Journal	Inorganic Chemistry Communications
Volume	107
DOIs	https://doi.org/10.1016/j.inoche.2019.107461
State	Published - Sep 2019

Keywords

Bio-conjugation enhancement
Electrochemical impedance spectroscopy (EIS)
Nano crystalline electrode
Pd nano-thin-film electrode
Pd roughness surface

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@article{4a4544d75e73416ca08030b1756bc656,

title = "Surface active flexible palladium nano-thin-film electrode development for biosensing",

abstract = "Metal atoms on surface edges or with specific coordinates possess high surface potentials, and serve as core atoms for organic molecule bonding. However, these active metal atoms may lose their activity by self-diffusion on the surface. A polyethylene terephthalate (PET) substrate provided a stable rough surface in nanoscale for metal atoms absorption and formation of a stable and active nano-thin-film (NTF) surface. However, the NTF surface roughness decreased with increasing thickness of palladium (Pd) granules, indicating that the surface growth of the Pd film followed a Stranski-Krastanov-like growth model. Therefore, the proper thickness of Pd-NTF on PET substrate (Pd NTF-PET) was developed for electrochemical impedance spectroscopy (EIS). Protein was immobilized on the Pd NTF-PET electrodes within 15 min and its biosensing sensitivity was as low as 0.1 ng per-test in 1 μl. We expect that the developed Pd NTF-PET electrode can be used for other biosensing applications as well.",

keywords = "Bio-conjugation enhancement, Electrochemical impedance spectroscopy (EIS), Nano crystalline electrode, Pd nano-thin-film electrode, Pd roughness surface",

author = "Chang, {Chia Yu} and Huang, {Yun Tzu} and Chang, {Pang Chia} and Su, {Chien Hao} and Hsu, {Kuo Chen} and Xing Li and Wu, {Cheng Han} and Chia-Ching Chang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = sep,

doi = "10.1016/j.inoche.2019.107461",

language = "English",

volume = "107",

journal = "Inorganic Chemistry Communications",

issn = "1387-7003",

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TY - JOUR

T1 - Surface active flexible palladium nano-thin-film electrode development for biosensing

AU - Chang, Chia Yu

AU - Huang, Yun Tzu

AU - Chang, Pang Chia

AU - Su, Chien Hao

AU - Hsu, Kuo Chen

AU - Li, Xing

AU - Wu, Cheng Han

AU - Chang, Chia-Ching

PY - 2019/9

Y1 - 2019/9

N2 - Metal atoms on surface edges or with specific coordinates possess high surface potentials, and serve as core atoms for organic molecule bonding. However, these active metal atoms may lose their activity by self-diffusion on the surface. A polyethylene terephthalate (PET) substrate provided a stable rough surface in nanoscale for metal atoms absorption and formation of a stable and active nano-thin-film (NTF) surface. However, the NTF surface roughness decreased with increasing thickness of palladium (Pd) granules, indicating that the surface growth of the Pd film followed a Stranski-Krastanov-like growth model. Therefore, the proper thickness of Pd-NTF on PET substrate (Pd NTF-PET) was developed for electrochemical impedance spectroscopy (EIS). Protein was immobilized on the Pd NTF-PET electrodes within 15 min and its biosensing sensitivity was as low as 0.1 ng per-test in 1 μl. We expect that the developed Pd NTF-PET electrode can be used for other biosensing applications as well.

AB - Metal atoms on surface edges or with specific coordinates possess high surface potentials, and serve as core atoms for organic molecule bonding. However, these active metal atoms may lose their activity by self-diffusion on the surface. A polyethylene terephthalate (PET) substrate provided a stable rough surface in nanoscale for metal atoms absorption and formation of a stable and active nano-thin-film (NTF) surface. However, the NTF surface roughness decreased with increasing thickness of palladium (Pd) granules, indicating that the surface growth of the Pd film followed a Stranski-Krastanov-like growth model. Therefore, the proper thickness of Pd-NTF on PET substrate (Pd NTF-PET) was developed for electrochemical impedance spectroscopy (EIS). Protein was immobilized on the Pd NTF-PET electrodes within 15 min and its biosensing sensitivity was as low as 0.1 ng per-test in 1 μl. We expect that the developed Pd NTF-PET electrode can be used for other biosensing applications as well.

KW - Bio-conjugation enhancement

KW - Electrochemical impedance spectroscopy (EIS)

KW - Nano crystalline electrode

KW - Pd nano-thin-film electrode

KW - Pd roughness surface

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U2 - 10.1016/j.inoche.2019.107461

DO - 10.1016/j.inoche.2019.107461

M3 - Article

AN - SCOPUS:85070315159

SN - 1387-7003

VL - 107

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

M1 - 107461

ER -

Surface active flexible palladium nano-thin-film electrode development for biosensing

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Keywords

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