Dear friend Sudhanshu Dwivedi

I hope this message finds you well. I wanted to reach out regarding your recent experiments with photoluminescence (PL) in NiO nanoparticles dispersed in isopropanol. The lack of observable PL signals in this system is certainly intriguing, and I can appreciate how challenging it can be to pinpoint the underlying causes.

It seems plausible that the solvent’s properties—such as polarity, viscosity, and even hydrogen bonding capability—could be influencing the energy transfer processes or promoting non-radiative quenching pathways. Isopropanol, while a common dispersant, may not be optimal for facilitating the desired nanoparticle–solvent interactions necessary for efficient PL emission.

Have you considered experimenting with solvents like ethanol, which is structurally similar to isopropanol but differs slightly in polarity and hydrogen bonding characteristics? Ethanol’s lower viscosity and higher polarity might enhance the interaction with NiO surfaces, potentially improving PL outcomes. Alternatively, polar aprotic solvents such as dimethyl sulfoxide (DMSO) or acetonitrile could offer unique solvation environments that minimize quenching and promote radiative recombination.

I would be very interested to hear your thoughts on these possibilities, or if you have already explored alternative solvents in your work. Please let me know if you’d like to discuss further or if I can assist in brainstorming additional approaches.

An article to read:

Article Hierarchical Ni-Mn Double Layered/Graphene Oxide with Excell...

Best regards,

Kaushik

NiO nanoparticles often show better photoluminescence in solvents like ethanol, methanol, DMSO, or acetonitrile due to improved dispersion and reduced quenching. Isopropanol is less effective, so switching solvents and optimizing dispersion can enhance PL detection.

Kaushik Shandilya Please share your email & mobile number. Where is this Baylor university ?