7-Methylbenzo[a]pyrene

• CAS: 63041-77-0
• Catalog Number: ACM63041770
• Category: Other Products; Arenes
• Molecular Weight: 266.34
• Molecular Formula: C₂₁H₁₄
• Hazard Statements: H315-H319-H335-H400
• RIDADR: NONH for all modes of transport
• Symbol: GHS07

Case Study

7-Methylbenzo[a]pyrene for Bimolecular Photoinduced Electron Transfer Kinetics

Venkatesan M, et al. Journal of Photochemistry and Photobiology A: Chemistry, 2019, 376, 212-223.

This case study describes the experimental application of 7-methylbenzo[a]pyrene (MBP) as a photoactive acceptor to quantify intrinsic bimolecular photoinduced electron transfer (PET) kinetics with aromatic amine donors. MBP was excited in acetonitrile under controlled donor concentrations ranging from dilute solutions to neat donor environments. Steady-state fluorescence quenching, femtosecond time-resolved fluorescence, and femtosecond transient absorption (fsTA) spectroscopy were jointly employed to distinguish diffusion-controlled and intrinsic electron transfer regimes. At low donor concentrations, kinetic data from fluorescence decay and fsTA were consistent, yielding bimolecular quenching rate constants (k_d) governed by diffusion. At high donor concentrations, diffusion effects were suppressed, enabling direct measurement of intrinsic electron transfer rates (k_et) through global and target analysis of ultrafast emission and absorption transients. The experiments demonstrate MBP's suitability for resolving ultrafast PET dynamics and Marcus-regime electron transfer behavior with high temporal precision.

Custom Q&A

What is the molecular formula of 7-Methylbenzo[a]pyrene?

The molecular formula of 7-Methylbenzo[a]pyrene is C21H14.

What is the molecular weight of 7-Methylbenzo[a]pyrene?

The molecular weight of 7-Methylbenzo[a]pyrene is 266.3 g/mol.

How is the IUPAC name of 7-Methylbenzo[a]pyrene computed?

The IUPAC name of 7-Methylbenzo[a]pyrene is computed by Lexichem TK 2.7.0.

What is the InChI of 7-Methylbenzo[a]pyrene?

The InChI of 7-Methylbenzo[a]pyrene is InChI=1S/C21H14/c1-13-4-2-7-17-18-11-10-15-6-3-5-14-8-9-16(12-19(13)17)21(18)20(14)15/h2-12H,1H3.

What is the InChIKey of 7-Methylbenzo[a]pyrene?

The InChIKey of 7-Methylbenzo[a]pyrene is PYVWGNPFWVQISD-UHFFFAOYSA-N.

What is the canonical SMILES of 7-Methylbenzo[a]pyrene?

The canonical SMILES of 7-Methylbenzo[a]pyrene is CC1=C2C=C3C=CC4=C5C3=C(C2=CC=C1)C=CC5=CC=C4.

What is the CAS number of 7-Methylbenzo[a]pyrene?

The CAS number of 7-Methylbenzo[a]pyrene is 63041-77-0.

What is the European Community (EC) number of 7-Methylbenzo[a]pyrene?

The European Community (EC) number of 7-Methylbenzo[a]pyrene is 633-111-3.

What is the UNII of 7-Methylbenzo[a]pyrene?

The UNII of 7-Methylbenzo[a]pyrene is 6J4BS15OLB.