https://scholars.lib.ntu.edu.tw/handle/123456789/575799
標題: | Multisensing Capability of MoSe2 Quantum Dots by Tuning Surface Functional Groups | 作者: | Dhenadhayalan N Lin T.-W Lee H.-L Lin K.-C. KING-CHUEN LIN |
關鍵字: | Energy transfer; Fluorescence; Gold nanoparticles; Melamine; Metal ions; Molybdenum compounds; Nanocrystals; Semiconductor quantum dots; Transition metals; Tuning; 2,4,6-trinitrophenol; Chemo-sensors; Fluorescent probes; Lower detection limit; Molybdenum diselenide; Sensitive detection; Surface functional groups; Transition metal dichalcogenides; Selenium compounds | 公開日期: | 2018 | 卷: | 1 | 期: | 7 | 起(迄)頁: | 3453-3463 | 來源出版物: | ACS Applied Nano Materials | 摘要: | Several distinct surface-functionalized molybdenum diselenide (MoSe2) quantum dots (QDs) were developed as chemosensors based on the fluorescent probe. The carboxylic-, amine-, and thiol-functionalized MoSe2 QDs (MoSe2/COOH, MoSe2/NH2, and MoSe2/SH) were synthesized by tuning their surface with thiol-containing capping agents. These MoSe2/COOH and MoSe2/NH2 QD sensors were implemented for the highly selective and sensitive detection of copper ion (Cu2+) and 2,4,6-trinitrophenol (TNP) with a lower detection limit of 4.6 and 45.3 nM, respectively. Similarly, the MoSe2/SH QDs while coupled with gold nanoparticles showed excellent selectivity toward melamine (MA) with a lower detection limit of 27.7 nM. It is surprising to find that each functionalized QD exhibits a distinct sensing mechanism in the detection of Cu2+, TNP, and MA, based on metal-ion-induced fluorescence turn-on, electron transfer, and energy transfer suppression, respectively. Moreover, these MoSe2 QD-based chemosensors were successfully utilized in real samples, confirming their propitious application. ? 2018 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058428179&doi=10.1021%2facsanm.8b00634&partnerID=40&md5=649e5cb4f3d5a0fa1a7746264d632e39 https://scholars.lib.ntu.edu.tw/handle/123456789/575799 |
ISSN: | 25740970 | DOI: | 10.1021/acsanm.8b00634 |
顯示於: | 化學系 |
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