@article {43825,
	title = {Amphi-functional mesoporous silica nanoparticles for dye separation},
	journal = {Journal of Materials Chemistry A},
	volume = {5},
	year = {2017},
	month = {JUL},
	pages = {14914-14921},
	type = {Article},
	abstract = {Synthesis of amphi-functional mesoporous silica nanoparticles (similar to 80 nm) by stepwise chemical modifications of outer and inner pore surfaces is reported. These materials display a clear "Janus" like character and are able to selectively and completely separate hydrophobic dyes form a mixture of dyes. Our results clearly suggest a clear partition of more hydrophobic dyes into the pores from a mixture of two dyes. In addition this material displays a remarkable recycling ability for 10 cycles with up to similar to 99\% dye removal from water.},
	doi = {10.1039/c7ta03904b},
	author = {Shinde, Pravin and Sen Gupta, Sayam and Singh, Baljeet and Polshettiwar, Vivek and Prasad, Bhagavatula L. V.}
}
@article {47720,
	title = {Amphifunctional mesoporous silica nanoparticles with {\textquoteleft}{\textquoteleft}molecular gates{\textquoteright}{\textquoteright} for controlled drug uptake and release},
	journal = {Particle \& Particle Systems Characterization},
	volume = {38},
	year = {2021},
	month = {DEC},
	pages = {2100185},
	type = {Article},
	abstract = {It is demonstrated that the uptake and release of hydrophobic drugs/dyes by mesoporous silica nanoparticles (MSN) is critically dependent on the functional groups present on their outer surfaces. For this, amphifunctional MSNs are synthesized, possessing hydrophobic pores and hydrophilic functional groups on the outer surface. Further, the outer surface is modified with a different chain length of molecules, e.g., propargyl alcohol, triethylene glycol, and PEG (2000) via azide-alkyne click chemistry. The effect of these different surface functional groups on uptake of drug/dye is demonstrated with Nile red, proflavine (free base form), and rhodamine 6G. The uptake of these molecules is found to be inversely proportional to the bulkiness of surface functionality. To counter this effect, an alternate method of loading is proposed and demonstrated. Finally, the effect of these different functional groups on the release of loaded drug proflavine is studied, which supports the hypothesis that bulkier outer surface groups also hinder the release of drugs loaded in the porous MSN.},
	keywords = {drug delivery and release, Mesoporous silica, molecular gating, surface functionalization},
	issn = {0934-0866},
	doi = {10.1002/ppsc.202100185},
	author = {Shinde, Pravin and Prasad, V, Bhagavatula L.}
}
