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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201705913
|2 doi
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|a pubmed24n0935.xml
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|a (DE-627)NLM280710380
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|a (NLM)29411443
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Li, Di
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Near-Infrared Excitation/Emission and Multiphoton-Induced Fluorescence of Carbon Dots
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 01.08.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Carbon dots (CDs) have significant potential for use in various fields including biomedicine, bioimaging, and optoelectronics. However, inefficient excitation and emission of CDs in both near-infrared (NIR-I and NIR-II) windows remains an issue. Solving this problem would yield significant improvement in the tissue-penetration depth for in vivo bioimaging with CDs. Here, an NIR absorption band and enhanced NIR fluorescence are both realized through the surface engineering of CDs, exploiting electron-acceptor groups, namely molecules or polymers rich in sulfoxide/carbonyl groups. These groups, which are bound to the outer layers and the edges of the CDs, influence the optical bandgap and promote electron transitions under NIR excitation. NIR-imaging information encryption and in vivo NIR fluorescence imaging of the stomach of a living mouse using CDs modified with poly(vinylpyrrolidone) in aqueous solution are demonstrated. In addition, excitation by a 1400 nm femtosecond laser yields simultaneous two-photon-induced NIR emission and three-photon-induced red emission of CDs in dimethyl sulfoxide. This study represents the realization of both NIR-I excitation and emission as well as two-photon- and three-photon-induced fluorescence of CDs excited in an NIR-II window, and provides a rational design approach for construction and clinical applications of CD-based NIR imaging agents
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|a Journal Article
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|a carbon dots
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4 |
|a multiphoton-induced fluorescence
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4 |
|a near-infrared absorption
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4 |
|a near-infrared fluorescence
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| 650 |
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4 |
|a surface engineering
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| 700 |
1 |
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|a Jing, Pengtao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sun, Lihuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a An, Yang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shan, Xinyan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Xinghua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Ding
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Han, Dong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shen, Dezhen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhai, Yuechen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Qu, Songnan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zbořil, Radek
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rogach, Andrey L
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 13 vom: 11. März, Seite e1705913
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:30
|g year:2018
|g number:13
|g day:11
|g month:03
|g pages:e1705913
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| 856 |
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|u http://dx.doi.org/10.1002/adma.201705913
|3 Volltext
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