19694-02-1 Usage
Description
1-Pyrenecarboxylic acid (PCA) is a polyaromatic derivative with an amphiphilic characteristic, functioning as a fluorophore with absorption spectra in the UV region. It features a carboxylic acid group attached to a pyrene nucleus, enabling its use as a sensitizer to facilitate electron transport between different mediums.
Uses
Used in Electronic Applications:
1-Pyrenecarboxylic acid is used as a surface modifier for graphene and carbon nanotubes (CNTs), enhancing their properties for a variety of electronic applications. The amphiphilic nature and electron transport facilitation of PCA contribute to the improved performance of these materials in electronic devices.
Purification Methods
Crystallise the acid from *C6H6, chlorobenzene, nitrobenzene or 95% EtOH. [Beilstein 9 H 712, 9 III 3575.]
Check Digit Verification of cas no
The CAS Registry Mumber 19694-02-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,9 and 4 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 19694-02:
(7*1)+(6*9)+(5*6)+(4*9)+(3*4)+(2*0)+(1*2)=141
141 % 10 = 1
So 19694-02-1 is a valid CAS Registry Number.
InChI:InChI=1/C17H10O2/c18-17(19)14-9-7-12-5-4-10-2-1-3-11-6-8-13(14)16(12)15(10)11/h1-9H,(H,18,19)
19694-02-1Relevant articles and documents
Manganese(III)-Mediated Formylation of Aromatic Compounds in the Presence of Malonic Acid
Nishino, Hiroshi,Tsunoda, Katsunori,Kurosawa, Kazu
, p. 545 - 550 (2007/10/02)
The reaction of naphthlenes with malonic acid in the presence of manganese(III) acetate gives naphthalenecarbaldehydes and naphthalenecarboxylic acids.Similar reactions of anthracene, pyrene, and methoxybenzenes also yield formylated and carboxylated products.It was found that the formyl group introduced to the aromatic ring was not derived from carboxymethyl radical generated directly by the thermolysis of manganese(III) acetate, but from a dicarboxymethyl radical formed by the interaction of malonic acid and manganese(III) acetate.In addition, it was also found that the dicarboxymethyl radicals attacked the position of the highest electron density on the aromatic ring and that this formylation was effective when the ionization potential of the aromatic copound was lower than 7.8 eV.