Sensors 2012, 12(4), 4421-4430; doi:10.3390/s120404421

2:1 Multiplexing Function in a Simple Molecular System

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Received: 31 December 2011; in revised form: 18 February 2012 / Accepted: 12 March 2012 / Published: 30 March 2012
(This article belongs to the Section Physical Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 1-[(Anthracen-9-yl)methylene] thiosemicarbazide shows weak fluorescence due to a photo-induced electron transfer (PET) process from the thiosemicarbazide moiety to the excited anthracene. The anthracene emission can be recovered via protonation of the amine as the protonated aminomethylene as an electron-withdrawing group that suppresses the PET process. Similarly, chelation between the ligand and the metal ions can also suppress the PET process and results in a fluorescence enhancement (CHEF). When solvents are introduced as the third control, a molecular 2:1 multiplexer is constructed to report selectively the inputs. Therefore, a molecular 2:1 multiplexer is realized in a simple molecular system.
Keywords: fluorescence; anthracene; molecular 2:1 multiplexer
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MDPI and ACS Style

Xu, S.; Hao, Y.-X.; Sun, W.; Fang, C.-J.; Lu, X.; Li, M.-N.; Zhao, M.; Peng, S.-Q.; Yan, C.-H. 2:1 Multiplexing Function in a Simple Molecular System. Sensors 2012, 12, 4421-4430.

AMA Style

Xu S, Hao Y-X, Sun W, Fang C-J, Lu X, Li M-N, Zhao M, Peng S-Q, Yan C-H. 2:1 Multiplexing Function in a Simple Molecular System. Sensors. 2012; 12(4):4421-4430.

Chicago/Turabian Style

Xu, Sha; Hao, Yu-Xin; Sun, Wei; Fang, Chen-Jie; Lu, Xing; Li, Min-Na; Zhao, Ming; Peng, Shi-Qi; Yan, Chun-Hua. 2012. "2:1 Multiplexing Function in a Simple Molecular System." Sensors 12, no. 4: 4421-4430.

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