title: In situ-synthesized cadmium sulfide nanowire photosensor with a parylene passivation layer for chemiluminescent immunoassays.
abstract: The direct in situ synthesis of cadmium sulfide (CdS) nanowires (NWs) was presented by direct synthesis of CdS NWs on the gold surface of an interdigitated electrode (IDE). In this work, we investigated the effect of a strong oxidant on the surfaces of the CdS NWs using X-ray photoelectron spectroscopy, transmission electron microscopy, and time-of-flight secondary ion mass spectrometry. We also fabricated a parylene-C film as a surface passivation layer for in situ-synthesized CdS NW photosensors and investigated the influence of the parylene-C passivation layer on the photoresponse during the coating of parylene-C under vacuum using a quartz crystal microbalance and a photoanalyzer. Finally, we used the in situ-synthesized CdS NW photosensor with the parylene-C passivation layer to detect the chemiluminescence of horseradish peroxidase and luminol and applied it to medical detection of carcinoembryonic antigen.
authors.affiliation: Department of Materials Sciences and Engineering, Yonsei University, 50 Yonsei-Ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea; Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Ju-Hee
authors.initials: JH
authors.lastname: Im
authors.affiliation: Department of Materials Sciences and Engineering, Yonsei University, 50 Yonsei-Ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea.
authors.forename: Hong-Rae
authors.initials: HR
authors.lastname: Kim
authors.affiliation: Department of Materials Sciences and Engineering, Yonsei University, 50 Yonsei-Ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea; Samsung Electro-Mechanics, Kyonggi, Republic of Korea.
authors.forename: Byoung-Gi
authors.initials: BG
authors.lastname: An
authors.affiliation: Department of Materials Sciences and Engineering, Yonsei University, 50 Yonsei-Ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea.
authors.forename: Young Wook
authors.initials: YW
authors.lastname: Chang
authors.affiliation: Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Min-Jung
authors.initials: MJ
authors.lastname: Kang
authors.affiliation: Korea Research Institute of Standards and Science (KRISS), Daejeon, Republic of Korea.
authors.forename: Tae-Geol
authors.initials: TG
authors.lastname: Lee
authors.affiliation: Korea Research Institute of Standards and Science (KRISS), Daejeon, Republic of Korea.
authors.forename: Jin Gyeng
authors.initials: JG
authors.lastname: Son
authors.affiliation: Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Jae-Gwan
authors.initials: JG
authors.lastname: Park
authors.affiliation: Department of Materials Sciences and Engineering, Yonsei University, 50 Yonsei-Ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea. Electronic address: jcpyun@yonsei.ac.kr.
authors.forename: Jae-Chul
authors.initials: JC
authors.lastname: Pyun
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D019187:Cadmium Compounds / Q000737:chemistry*; D002272:Carcinoembryonic Antigen / Q000097:blood*; D004867:Equipment Design; D006735:Horseradish Peroxidase / Q000737:chemistry; D006801:Humans; D007118:Immunoassay / Q000295:instrumentation; D049408:Luminescent Agents / Q000737:chemistry; D008163:Luminescent Measurements / Q000295:instrumentation*; D008165:Luminol / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*; D014992:Xylenes / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D002272:Carcinoembryonic Antigen; D049408:Luminescent Agents; D011108:Polymers; D013440:Sulfides; D014992:Xylenes; C034939:cadmium sulfide; C011055:parylene; D008165:Luminol; D006735:Horseradish Peroxidase
keywords: CdS; Chemiluminescence; Nanowire; Parylene-C; Passivation; Photosensor