Molecular Junctions Inspired by Nature: Electrical Conduction

16 hours ago - ... conductance decreased as the alternating Donor-Acceptors around the nanobelts attenuates to a uniform distribution in the H-bonding...
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Molecular Junctions Inspired by Nature: Electrical Conduction Through Noncovalent Nanobelts Leighton O. Jones, Martin A. Mosquera, George C. Schatz, and Mark A. Ratner J. Phys. Chem. B, Just Accepted Manuscript • DOI: 10.1021/acs.jpcb.9b06255 • Publication Date (Web): 05 Sep 2019 Downloaded from pubs.acs.org on September 5, 2019

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µ µ





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⋯ ⋯ ⋯N



𝐼(𝑉) =

2𝑒 ℎ



∫−∞ 𝑑𝐸[𝑓𝐿 (𝐸, 𝑉) − 𝑓𝑅 (𝐸, 𝑉)] 𝜏(𝐸, 𝑉)



𝐸b = (𝐸𝑁𝐶𝑁−𝐿 + 𝐸𝑁𝐶𝑁−𝑅 ) − 𝐸𝑑𝑖𝑚𝑒𝑟 Σα and Σβ H-bond contribution terms are computed from Σ𝛼 = Σ𝛼 (𝑓𝑎𝑣𝑜𝑟𝑎𝑏𝑙𝑒) − Σ𝛼 (𝑢𝑛𝑓𝑎𝑣𝑜𝑟𝑎𝑏𝑙𝑒) Σ𝛽 = Σ𝛽 (𝑓𝑎𝑣𝑜𝑟𝑎𝑏𝑙𝑒) − Σ𝛽 (𝑢𝑛𝑓𝑎𝑣𝑜𝑟𝑎𝑏𝑙𝑒)

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⋯ ⋯

B 25



20



15

Eb

50

45

40 10 35

5 0

30

-5

25

-10 20

Binding Energy Eb (Kcal mol-1)



Number of Contributions

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-15

11

22

33

44

55

NCN Dimers

α) and tertiary (β) ; (B) Histogram of the number of contributions per NCN dimer.

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60 200

150 40 100 30 50

20

0

10

Seebeck Function S (V K-1)

G S

50

Conductance G (S)

-50

(5 ) 3H /3 H

(4 ) 3H /3 H

(3 ) 2H /4 H

(2 ) 1H /5 H

(1 )

0

0H /6 H

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Bond Array (nHL/nHR)

Ω µ

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⋅⋅⋅

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