2018
DOI: 10.1021/acs.analchem.8b03446
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NaYF4:Yb,Er Upconversion Nanotransducer with in Situ Fabrication of Ag2S for Near-Infrared Light Responsive Photoelectrochemical Biosensor

Abstract: An innovative near-infrared (NIR) light-driven photoelectrochemical (PEC) aptasensor was constructed for sensitive screening of carcinoembryonic antigen (CEA) on the basis of in situ formation of AgS nanoparticles on the NaYF:Yb,Er upconversion nanoparticles (UCNs), coupled with hybridization chain reaction (HCR) for the signal amplification. Utilization of UCN as the light nanotransducer could convert the NIR light into an applicable wavelength harvested by semiconductors. The multiemissions of NaYF:Yb,Er UCN… Show more

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Cited by 118 publications
(60 citation statements)
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“…As metallophthalocyanines have been widely used for in vivo applications such as photodynamic therapy, we envision that further investigation by using a similar principle would make the CNNS–metallophthalocyanine system suitable for NIR. In addition, owing to the lack of suitable photoactive materials, very few works regarding PEC biosensing with red light have been reported, such as using TiO 2 /CdTe/NaYF 4 :Yb/Er, ZnO nanorods/naphthalocyanine, TiO 2 nanotube photonic crystals, Ag NPs/Ag 2 S QDs, and Ag 2 S/NaYF 4 :Yb/Er . This work offers another rare successful example of using metal‐free CN with advantages of highly efficient photoelectron conversion, tailorable molecular, geometric, and electronic structures, low cost, and biocompatibility.…”
Section: Resultsmentioning
confidence: 99%
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“…As metallophthalocyanines have been widely used for in vivo applications such as photodynamic therapy, we envision that further investigation by using a similar principle would make the CNNS–metallophthalocyanine system suitable for NIR. In addition, owing to the lack of suitable photoactive materials, very few works regarding PEC biosensing with red light have been reported, such as using TiO 2 /CdTe/NaYF 4 :Yb/Er, ZnO nanorods/naphthalocyanine, TiO 2 nanotube photonic crystals, Ag NPs/Ag 2 S QDs, and Ag 2 S/NaYF 4 :Yb/Er . This work offers another rare successful example of using metal‐free CN with advantages of highly efficient photoelectron conversion, tailorable molecular, geometric, and electronic structures, low cost, and biocompatibility.…”
Section: Resultsmentioning
confidence: 99%
“…In addition, owing to the lack of suitable photoactive materials,v ery few works regarding PEC biosensing with red light have been reported, such as using TiO 2 /CdTe/NaYF 4 :Yb/Er,Z nO nanorods/naphthalocyanine, TiO 2 nanotube photonic crystals, Ag NPs/Ag 2 SQ Ds, and Ag 2 S/ NaYF 4 :Yb/Er. [10][11][12][13][14] This work offers another rare successful ex-ample of using metal-free CN with advantages of highly efficient photoelectron conversion,t ailorable molecular,g eometric, and electronic structures,l ow cost, and biocompatibility. Besides, several methods are available for exfoliationo fC N nanosheets, including post-thermal oxidation etching, ultrasonication-assisted liquid exfoliation, and intercalation.…”
Section: Resultsmentioning
confidence: 99%
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