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Iron( III)-Quantity...
Iron( III)-Quantity-Dependent Aggregation-Dispersion Conversion of Functionalized Gold Nanoparticles
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Bai, Linyi (author)
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Zhu, Liangliang (author)
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Ang, Chung Yen (author)
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- Li, Xin (author)
- KTH,Teoretisk kemi och biologi
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Wu, Shaojue (author)
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Zeng, Yongfei (author)
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- Ågren, Hans (author)
- KTH,Teoretisk kemi och biologi
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Zhao, Yanli (author)
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(creator_code:org_t)
- 2014-03-05
- 2014
- English.
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In: Chemistry - A European Journal. - : Wiley. - 0947-6539 .- 1521-3765. ; 20:14, s. 4032-4037
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Developing gold nanoparticles (AuNPs) with well-designed functionality is highly desirable for boosting the performance and versatility of inorganic-organic hybrid materials. In an attempt to achieve ion recognition with specific signal expressions, we present here 4-piperazinyl-1,8-naphthalimide-functionalized AuNPs for the realization of quantitative recognition of Fe-III ions with dual (colorimetric and fluorescent) output. The research takes advantage of 1)quantity-controlled chelation-mode transformation of the piperazinyl moiety on the AuNPs towards Fe-III, thereby resulting in an aggregation-dispersion conversion of the AuNPs in solution, and 2)photoinduced electron transfer of a naphthaimide fluorophore on the AuNPs, thus leading to reversible absorption and emission changes. The functional AuNPs are also responsive to pH variations. This strategy for realizing the aggregation-dispersion conversion of AuNPs with returnable signal output might exhibit application potential for advanced nanoscale chemosensors.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- gold
- iron
- nanoparticles
- sensors
- surface plasmon resonance
Publication and Content Type
- ref (subject category)
- art (subject category)
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