TY - JOUR
T1 - Carbazole-functionalized nanocomposite fibers for sensitive alcohol vapor detection
AU - Lin, Tz Feng
AU - Chang, Yin Hsuan
AU - Hsieh, Ting Hung
AU - Lu, Shu Chi
AU - Lin, Ting Han
AU - Yu, Hao Yun
AU - Wu, Ming Chung
N1 - Publisher Copyright:
© 2025
PY - 2025/12/15
Y1 - 2025/12/15
N2 - The detection of alcohol vapors is essential for industrial safety, environmental monitoring, and public health, as excessive exposure can pose serious hazards. Recent advances in gas sensing technologies, such as metal oxide semiconductors, conducting polymers, and surface acoustic wave sensors, have shown promise for detecting volatile organic compounds (VOCs), but challenges such as slow response time, poor selectivity, and humidity interference remain unresolved. Optical sensing platforms, especially those based on nanofibers, offer a promising alternative for achieving real-time, label-free detection in ambient conditions. In this work, poly(methyl methacrylate) (PMMA) was selected as the sensing matrix due to its excellent optical transparency, mechanical flexibility, and compatibility with molecular dopants. Carbazole-based compounds are designed by grafting two 4,4′-dimethoxy-diphenylamine (DPA) and functionalize with alkyl chains of varying lengths: 1-bromocetane (C16), and was identified as the optimal structure (DPA-C16). Silver nanoparticles (Ag NPs) were incorporated to enhance sensing performance via surface plasmon resonance (SPR). DPA-C16 was electrospun with PMMA and Ag nanoparticles to form nanofiber-based optical sensing films for alcohol detection. This study highlights the role of carbazole-based DPA-C16 in enhancing the morphology and performance of electrospun nanofibers for alcohol gas sensing. DPA-C16 significantly improves hydrophobicity, effectively reducing moisture interference, and thereby enhancing sensor stability in humid conditions. Optimized electrospun fiber materials exhibit rapid response times of less than one minute and high sensitivity with a detection limit of 50 ppm for methanol, ethanol, and isopropanol. The developed material demonstrates efficient and highly selective gas sensing capabilities, making it a strong candidate for industrial detection, environmental monitoring, and safety applications.
AB - The detection of alcohol vapors is essential for industrial safety, environmental monitoring, and public health, as excessive exposure can pose serious hazards. Recent advances in gas sensing technologies, such as metal oxide semiconductors, conducting polymers, and surface acoustic wave sensors, have shown promise for detecting volatile organic compounds (VOCs), but challenges such as slow response time, poor selectivity, and humidity interference remain unresolved. Optical sensing platforms, especially those based on nanofibers, offer a promising alternative for achieving real-time, label-free detection in ambient conditions. In this work, poly(methyl methacrylate) (PMMA) was selected as the sensing matrix due to its excellent optical transparency, mechanical flexibility, and compatibility with molecular dopants. Carbazole-based compounds are designed by grafting two 4,4′-dimethoxy-diphenylamine (DPA) and functionalize with alkyl chains of varying lengths: 1-bromocetane (C16), and was identified as the optimal structure (DPA-C16). Silver nanoparticles (Ag NPs) were incorporated to enhance sensing performance via surface plasmon resonance (SPR). DPA-C16 was electrospun with PMMA and Ag nanoparticles to form nanofiber-based optical sensing films for alcohol detection. This study highlights the role of carbazole-based DPA-C16 in enhancing the morphology and performance of electrospun nanofibers for alcohol gas sensing. DPA-C16 significantly improves hydrophobicity, effectively reducing moisture interference, and thereby enhancing sensor stability in humid conditions. Optimized electrospun fiber materials exhibit rapid response times of less than one minute and high sensitivity with a detection limit of 50 ppm for methanol, ethanol, and isopropanol. The developed material demonstrates efficient and highly selective gas sensing capabilities, making it a strong candidate for industrial detection, environmental monitoring, and safety applications.
KW - Alcohol gas sensing
KW - Carbazole
KW - Electrospinning
KW - Hydrophobic nanofibers
KW - Volatile organic compounds detection
UR - https://www.scopus.com/pages/publications/105021475763
U2 - 10.1016/j.surfcoat.2025.132883
DO - 10.1016/j.surfcoat.2025.132883
M3 - 文章
AN - SCOPUS:105021475763
SN - 0257-8972
VL - 518
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
M1 - 132883
ER -