2:1 Multiplexing Function in a Simple Molecular System

Sensors

Sha Xu¹  Yu-Xin Hao¹  Wei Sun²  Chen-Jie Fang¹  Xing Lu¹  Min-Na Li¹  Ming Zhao¹  Shi-Qi Peng¹ 

[1] School of Chemical Biology and Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; E-Mails:;Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China; E-Mail:

关键词: fluorescence;    anthracene;    molecular 2:1 multiplexer;   

DOI  :  10.3390/s120404421

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.