Acid-Induced Multicolor Fluorescence of Pyridazine Derivative

作者：Li, Mengwei; Yuan, Yuan; Chen, Yulan^*

来源：ACS Applied Materials & Interfaces, 2018, 10(1): 1237-1243.

DOI：10.1021/acsami.7b16050

• pyridazine
• acid sensing
• multicolor fluorescence
• sensor
• patterning

Smart luminescent materials that are responsive to external stimuli have received considerable attention. Here, we report a new D-A type 1,2-pyridiazine derivative (3,4,5,6tetrakis(4-methoxyphenyl)pyridazine (TPP)) exhibiting turn on fluorescence upon acid exposure both in solution and in the solid state. The protonation of the 1,2-pyridiazine ring caused a variation in the emission colors of the acidification species from blue (406 nm) to orange-red (630 nm) with a huge Ailem (224 nm). As a result, a synthetic rainbow of emission in solution could be achieved from one single molecule, and white photoluminescence was readily tuned by controlled protonation. A trifluoroacetic acid (TFA)-sensor film made from TPP was demonstrated as a TFA-sensitive surface with high sensitivity and reversibility. On the basis of these findings, we constructed a solid-state TPP film with a photoacid generator and demonstrated data encryption and decryption via a cascade protonation reaction that was well controlled by UV light.

• 出版日期2018-1-10
• 单位天津大学