title: Sequential logic operations with a molecular keypad lock with four inputs and dual fluorescence outputs.
abstract: A novel coumarin-rhodamine conjugate was prepared, and its metal binding properties were studied by UV/Vis and fluorescence spectroscopy. The conjugate serves as a ratiometric and highly selective fluorescent sensor for Hg(2+) ions. Its metal-responsive spectral properties were utilized to construct a molecular keypad lock with four inputs and dual fluorescence outputs. The complexity of this molecular logic network can greatly enhance the security level of this device.
authors: Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong (China).
authors: Xiong-Jie
authors: XJ
authors: Jiang
authors: Dennis K P
authors: DK
authors: Ng
keywords: coumarin; fluorescent sensors; keypad locks; rhodamine; sequential logic