Multicomponent System of Single-Walled Carbon Nanotubes Functionalized with a Melanin-Inspired Material for Optical Detection and Scavenging of Metals

Verena Wulf; Ella Bichachi; Adi Hendler-NeumarkTlalit MassaranoAvigail Baruch LeshemAyala LampelGili Bisker

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Multicomponent System of Single-Walled Carbon Nanotubes Functionalized with a Melanin-Inspired Material for Optical Detection and Scavenging of Metals

机译：Multicomponent System of Single-Walled Carbon Nanotubes Functionalized with a Melanin-Inspired Material for Optical Detection and Scavenging of Metals

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The accumulation of metal ions in organisms and the presence of heavy metalsin water cause adverse effects on ecosystems and results in numerous humanhealth issues such as cancer and neurogenerative diseases. Therefore, the developmentof novel platforms for metal-scavenging and rapid metal detection for insitu applications are of high importance. Here, this challenge is tackled by takingadvantage of the metal chelation ability of a melanin-inspired material in combinationwith the near-infrared (NIR) fluorescence response of single-walled carbonnanotubes (SWCNTs) to surface binding. SWCNTs are functionalized by a melanin-like substance, obtained by enzymatic oxidative polymerization of a fluorenylmethyloxycarbonyl-tyrosine (FmocY) precursor. The resulting multicomponentsystem (SWCNT-FmocY_(Ox)) serves as a metal-ion scavenging platform that concurrentlyreports on metal binding with optical signal transduction. Upon bindingof a library of mostly divalent transition metal-ions, the fluorescence emission ofthe functionalized SWCNTs is modulated, showing a concentration-dependentresponse with a limit of detection in the nanomolar range. Metal-binding andremoval from water of up to 98% is further shown via inductively coupled plasmamass spectrometry. The SWCNT-FmocY_(Ox) hybrid system presents a novel platformwith NIR optical signal for real-time feedback on metal-ion scavenging.

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来源
《Advanced functional materials》 |2022年第49期|2209688.1-2209688.9|共9页
作者
Verena Wulf; Ella Bichachi; Adi Hendler-NeumarkTlalit MassaranoAvigail Baruch LeshemAyala LampelGili Bisker;
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Shmunis School of Biomedicine and Cancer ResearchGeorge S. Wise Faculty of Life SciencesTel Aviv UniversityTel Aviv 69978, Israel;

The Center for Physics and Chemistry of Living SystemsTel Aviv UniversityTel Aviv 6997801, Israel Center for Nanoscience and NanotechnologyTel Aviv UniversityTel Aviv 6997801, Israel Sagol Center for Regenerative BiotechnologyTel Aviv UniversityTel Aviv 6;

Department of Biomedical EngineeringIby and Aladar Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 6997801, Israel The Center for Physics and Chemistry of Living SystemsTel Aviv UniversityTel Aviv 6997801, Israel Center for Nanoscience and NaDepartment of Biomedical EngineeringIby and Aladar Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 6997801, IsraelDepartment of Biomedical EngineeringIby and Aladar Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 6997801, Israel Shmunis School of Biomedicine and Cancer ResearchGeorge S. Wise Faculty of Life SciencesTel Aviv UniversityTel Aviv 69978, Isra;

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正文语种英语
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bioinspired materials; fluorescent nanoparticles; Fmoc-tyrosine; melanin; optical nanosensors; single-walled carbon nanotubes;

Multicomponent System of Single-Walled Carbon Nanotubes Functionalized with a Melanin-Inspired Material for Optical Detection and Scavenging of Metals

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