One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 102-08-9, Name is N,N’-Diphenylthiourea, formurla is C13H12N2S. In a document, author is Li, Mengwei, introducing its new discovery. Name: N,N’-Diphenylthiourea.
Acid-Induced Multicolor Fluorescence of Pyridazine Derivative
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.
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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem