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. 2021 Jun 30;26(13):3995. doi: 10.3390/molecules26133995

Figure 5.

Figure 5

(a) Schematic model of c-P24. (i) c-P24 on gold deposited from methanol/toluene 1:3, 5% pyridine. (ii) c-P12 on Au (111) deposited from methanol/toluene 1:3. (It = 30 pA, Vbias = −1.8 V, −2.0 V, scale bars: 20 nm). (b) STM images of nanorings deposited on gold surfaces under UHV. (i) c-P10, (ii) c-P20, (iii). c-P30, (iv). c-P40, (v). c-P50, (vi). Nested nanoring complexes of c-P30 (the labels A, B, C, D in (b(vi)) represent nanorings structure; A is a ‘double-in-single’ nested structure consisting of two stacked folded rings inside a single open ring. B and C have nested ‘single-in-double’ structures consisting of a single folded ring inside a two-layer stack of open rings. Structure D is a triple-stack nanoring). (vii). Nested nanoring complexes of c-P40 consisting of single-height inner rings within double-height outer rings. Inset represents a schematic of a nested c-P40 structure. Reproduced from refs. [5,6] with permission from the American Chemical Society and Nature Publishing Group respectively.