Chinese Journal of Applied Chemistry ›› 2023, Vol. 40 ›› Issue (6): 904-915.DOI: 10.19894/j.issn.1000-0518.220371

• Full Papers • Previous Articles     Next Articles

Designing Dual-output Digital Logic Circuits Based on the Combination of Bovine Serum Albumin and Schiff Base

Xing-Mei HU, Jin-Hong ZHANG, Yu-Lin MO, Hai-Bin LIN()   

  1. College of Chemistry,Chemical Engineering and Environment,Minnan Normal University,Zhangzhou 363000,China
  • Received:2022-11-15 Accepted:2023-05-10 Published:2023-06-01 Online:2023-06-27
  • Contact: Hai-Bin LIN
  • About author:linhb97@mnnu.edu.cn
  • Supported by:
    the Natural Science Foundation of Fujian Province, China(2021J01986)

Abstract:

The ability to realize logic calculations and applications of molecules from the nanoscale is an important part of miniaturization of electronic microprocessors. Herein, a novel fluorescent probe complex (BSA@SALPHENH2) is prepared by the interaction of bis-(salicyladehyde)-1,3-propylenedii-mine (SALPHENH2) with bovine serum albumin(BSA). The interaction of BSA with bis-(salicyladehyde)-1,3-propylenediimine is characterized by fluorescence titration experiment, synchronous fluorescence spectroscopy, site marker fluorescent probes and molecular docking. It is found that the conformation of BSA changes slightly in presence of bis-(salicyladehyde)-1,3-propylenediimine, the quenching type is static quenching, and there is van der Waals forces and hydrogen bonding in Subdomain ⅢA (Site Ⅱ) of BSA. Additionally, the experiment results show that the complex has two fluorescence emission bands under the excitation of 280 nm due to hybrid fluorescence resonance energy transfer and electron exchange energy transfer between BSA and Zn2+-bis-(salicyladehyde)-1,3-propylenediimine Schiff base. Then, Modulating the system using different ions as the input signal to design a half subtractor and a binary molecular logic circuit containing one OR gate, one NAND gate, two NOT gates and three AND gates. Simultaneously, this combination provides a good reference model in exploring Dexter energy transfer in fluorescent experiments.

Key words: Molecular logic devices, Energy transfer, Fluorescence, Dual-output, Bovine serum albumin

CLC Number: