Three-input-three-output logic operations based on absorption and fluorescence dual-mode from a thiourea compound.
A simple organic molecule of 2-naphthol-1-aldehyde-conjugated thiourea (denoted as receptor 1) is designed and prepared. Absorption and fluorescence spectra response profiles of receptor 1 with different ionic inputs vary significantly in a DMSO-H(2)O solution (V/V = 9 : 1) through modulating intramolecular charge transfer (ICT) processes. In particular, the changes of the dual-modal spectra when anions, such as F(-), AcO(-) or H(2)PO(4)(-), are introduced in such an aqueous solution indicate that receptor 1 could be tolerant to H(2)O at least to some extent in recognizing anions. On the basis of the above results, binary logic operations (OR, NOR and INHIBIT) and their multiply-logic functions with different combinations have been achieved at the molecular level by changing different chemical inputs. The output signals can be encoded as absorption and fluorescence dual-mode, depending on the choice of 2-naphthol as the chromophore and fluorophore core.
State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033, PR China.
Lianlian
L
Wang
Bin
B
Li
Liming
L
Zhang
Yongshi
Y
Luo