Fabrication of flexible AuNPs@ polyimide heating chips for in situ explosives SERS sensing in nature samples

Zihan Wang; Yu Dai; Xin Zhou; Zhong Ping Liu; Wei Liu; Longjin Huang; Meiyu Yuan; Sheng Cui; Xuan He

doi:10.1016/j.talanta.2023.124460

Fabrication of flexible AuNPs@ polyimide heating chips for in situ explosives SERS sensing in nature samples

Zihan Wang, Yu Dai, Xin Zhou, Zhong Ping Liu, Wei Liu, Longjin Huang, Meiyu Yuan, Sheng Cui, Xuan He

College of Materials Science and Engineering

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

9 Scopus citations

Abstract

In this study, highly sensitive flexible AuNPs@ polyimide SERS heating chips (APHC) were fabricated for in situ collecting and detecting TNT. Large-scale AuNPs arrays were synthesized by liquid-liquid interface self-assembly and transferred to polyimide heating film as SERS substrates. 4-ATP and AgNPs functionalized on APHC were used as capture means and signal amplifiers, combining with TNT to form the AuNPs-TNT-AgNPs “sandwich” structure. This flexible APHC chip showed high sensitivity as enhancement factor was 5.5×10⁵, and good repeatability and stability (RSD<10%). It was applied to detect TNT solutions with a low concentration of 10⁻⁹ M, and showed a good linear response in the range from 10⁻⁵ to 10⁻⁹ M (R² = 0.986). In addition, the detection method also had good selectivity and no response to various TNT analogs. More important, combing with the thermal enrichment strategy, TNT dispersed in environmental samples such as soil, fruit and clothing would be enriched as vapor then collected and detected by APHC. This APHC device shows great potential for in situ sensing platforms, due to its sensitivity, high efficiency, and excellent portability.

Original language	English
Article number	124460
Journal	Talanta
Volume	258
DOIs	https://doi.org/10.1016/j.talanta.2023.124460
State	Published - 1 Jun 2023

Keywords

Explosive TNT
In situ detection
SERS chips
Self-assemble
Target molecules enrichment

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10.1016/j.talanta.2023.124460

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@article{0f64a935c63f4b21a62ced39e6d06dae,

title = "Fabrication of flexible AuNPs@ polyimide heating chips for in situ explosives SERS sensing in nature samples",

abstract = "In this study, highly sensitive flexible AuNPs@ polyimide SERS heating chips (APHC) were fabricated for in situ collecting and detecting TNT. Large-scale AuNPs arrays were synthesized by liquid-liquid interface self-assembly and transferred to polyimide heating film as SERS substrates. 4-ATP and AgNPs functionalized on APHC were used as capture means and signal amplifiers, combining with TNT to form the AuNPs-TNT-AgNPs “sandwich” structure. This flexible APHC chip showed high sensitivity as enhancement factor was 5.5×105, and good repeatability and stability (RSD<10%). It was applied to detect TNT solutions with a low concentration of 10−9 M, and showed a good linear response in the range from 10−5 to 10−9 M (R2 = 0.986). In addition, the detection method also had good selectivity and no response to various TNT analogs. More important, combing with the thermal enrichment strategy, TNT dispersed in environmental samples such as soil, fruit and clothing would be enriched as vapor then collected and detected by APHC. This APHC device shows great potential for in situ sensing platforms, due to its sensitivity, high efficiency, and excellent portability.",

keywords = "Explosive TNT, In situ detection, SERS chips, Self-assemble, Target molecules enrichment",

author = "Zihan Wang and Yu Dai and Xin Zhou and Liu, {Zhong Ping} and Wei Liu and Longjin Huang and Meiyu Yuan and Sheng Cui and Xuan He",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = jun,

day = "1",

doi = "10.1016/j.talanta.2023.124460",

language = "英语",

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T1 - Fabrication of flexible AuNPs@ polyimide heating chips for in situ explosives SERS sensing in nature samples

AU - Wang, Zihan

AU - Dai, Yu

AU - Zhou, Xin

AU - Liu, Zhong Ping

AU - Liu, Wei

AU - Huang, Longjin

AU - Yuan, Meiyu

AU - Cui, Sheng

AU - He, Xuan

PY - 2023/6/1

Y1 - 2023/6/1

N2 - In this study, highly sensitive flexible AuNPs@ polyimide SERS heating chips (APHC) were fabricated for in situ collecting and detecting TNT. Large-scale AuNPs arrays were synthesized by liquid-liquid interface self-assembly and transferred to polyimide heating film as SERS substrates. 4-ATP and AgNPs functionalized on APHC were used as capture means and signal amplifiers, combining with TNT to form the AuNPs-TNT-AgNPs “sandwich” structure. This flexible APHC chip showed high sensitivity as enhancement factor was 5.5×105, and good repeatability and stability (RSD<10%). It was applied to detect TNT solutions with a low concentration of 10−9 M, and showed a good linear response in the range from 10−5 to 10−9 M (R2 = 0.986). In addition, the detection method also had good selectivity and no response to various TNT analogs. More important, combing with the thermal enrichment strategy, TNT dispersed in environmental samples such as soil, fruit and clothing would be enriched as vapor then collected and detected by APHC. This APHC device shows great potential for in situ sensing platforms, due to its sensitivity, high efficiency, and excellent portability.

AB - In this study, highly sensitive flexible AuNPs@ polyimide SERS heating chips (APHC) were fabricated for in situ collecting and detecting TNT. Large-scale AuNPs arrays were synthesized by liquid-liquid interface self-assembly and transferred to polyimide heating film as SERS substrates. 4-ATP and AgNPs functionalized on APHC were used as capture means and signal amplifiers, combining with TNT to form the AuNPs-TNT-AgNPs “sandwich” structure. This flexible APHC chip showed high sensitivity as enhancement factor was 5.5×105, and good repeatability and stability (RSD<10%). It was applied to detect TNT solutions with a low concentration of 10−9 M, and showed a good linear response in the range from 10−5 to 10−9 M (R2 = 0.986). In addition, the detection method also had good selectivity and no response to various TNT analogs. More important, combing with the thermal enrichment strategy, TNT dispersed in environmental samples such as soil, fruit and clothing would be enriched as vapor then collected and detected by APHC. This APHC device shows great potential for in situ sensing platforms, due to its sensitivity, high efficiency, and excellent portability.

KW - Explosive TNT

KW - In situ detection

KW - SERS chips

KW - Self-assemble

KW - Target molecules enrichment

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U2 - 10.1016/j.talanta.2023.124460

DO - 10.1016/j.talanta.2023.124460

M3 - 文章

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AN - SCOPUS:85151952205

SN - 0039-9140

VL - 258

JO - Talanta

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ER -

Fabrication of flexible AuNPs@ polyimide heating chips for in situ explosives SERS sensing in nature samples

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Keywords

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