Abstract
Encapsulation thermodynamics of a guest molecule by self-assembled rosette nanotubes (RNTs) was investigated using the statistical mechanical theory of molecular liquids also known as 3D-RISM theory. Ferrocene was chosen as a guest molecule because it is a good mimic for a small drug molecule in terms of logP value. The present computational study predicts that ferrocene can penetrate the channel of all three RNTs examined, however, the potential of mean force profile along the RNT channel suggested that RNT that has the smallest channel diameter has relatively high potential barrier for uptake and release of ferrocene, and therefore it was suggested that this could be a suitable mechanism to trap (during self-assembly) and release (during disassembly) a drug candidate. This work suggests also that tuning the RNT channel dimensions and chemistry should allow us to develop a palette of RNT delivery systems for a variety of drugs.
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