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. Author manuscript; available in PMC: 2020 Feb 12.
Published in final edited form as: Chem Commun (Camb). 2019 Feb 12;55(14):2090–2093. doi: 10.1039/c8cc10319d

Fig. 3.

Fig. 3

Longer RNA selection on mineral surfaces based on thermodynamics. (A) A reversible adsorption of a short oligomer to a 1D surface, covered with empty sites (black square boxes) and two different size oligomers (pink and green rectangles). Nk enumerates the number of each object. (B) Reversible adsorption of oligomers to mineral surfaces, associated with Δμk,ads* (C) Relative oligomer concentrations on mineral surfaces at T = 293 K, following eqn (3) with ε(T*) = 3.5kBT*, δ(T*) = −0.5kBT*, and T* = 293 K. (D) Relative oligomer concentrations on mineral surfaces at three different temperatures T (293 K, 308 K, and 323 K), following eqn (3) with Δhε = −11.5kBT*, Δsε, = 14.9kB, ε(T) = Δhε − TΔsε. Δhδ = −2.5kBT*, Δsδ = 1.7kB, and δ(T) = Δhδ – TΔsδ. The energy scale is set by reference temperature T* = 293 K.