Density functional study on the derivatives of purine

Area of Science:

• Computational Chemistry
• Materials Science
• Energetic Materials

Background:

• Purine derivatives are explored for their potential as high energy density materials.
• Functionalization of purine scaffolds with nitro and amino groups can significantly alter their energetic properties.

Purpose of the Study:

• To design and computationally investigate novel purine derivatives for high energy density applications.
• To evaluate the detonation performance and stability of these new compounds.

Main Methods:

• Density Functional Theory (DFT) calculations using the B3LYP/6-31 G** level of theory.
• Analysis of molecular geometries, vibrational frequencies, heats of formation (HOF), and bond dissociation energies (BDE).
• Prediction of detonation parameters including detonation velocity and pressure.

Main Results:

• All designed purine derivatives exhibited high positive heats of formation and BDE values exceeding 120 KJ·mol(-1).
• Detonation velocities for derivatives B1, B2, and C were calculated as 9.58, 9.57, and 9.90 km·s(-1), respectively.
• Detonation pressures reached up to 46.37 GPa, surpassing those of established energetic materials like RDX and HMX.

Conclusions:

• The synthesized purine derivatives demonstrate excellent detonation properties and high thermal stability.
• These compounds represent promising candidates for next-generation high energy density materials.
• Further experimental validation is warranted to confirm the predicted performance of these purine-based energetic materials.