Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (2): 20240429.doi: 10.7503/cjcu20240429
• Organic Chemistry • Previous Articles Next Articles
WANG Mingzhen, WANG Zhiye, LI Mengxiao, LU Yuhua, WANG Xu, LI Yunchuan(
)
Received:2024-09-16
Online:2025-02-10
Published:2024-11-25
Contact:
LI Yunchuan
E-mail:yc.l@wust.edu.cn
CLC Number:
TrendMD:
WANG Mingzhen, WANG Zhiye, LI Mengxiao, LU Yuhua, WANG Xu, LI Yunchuan. Influence of Polycyclic Aromatic Hydrocarbon Molecular Framework on Single-molecule Conductance[J]. Chem. J. Chinese Universities, 2025, 46(2): 20240429.
| Molecule | Eox/V | λabs/nm | EHOMO/eV | ELUMO/eV | Eg/eV | ε/eV |
|---|---|---|---|---|---|---|
| DT⁃B | 1.32 | 366 | -5.59 | -2.20 | 3.39 | 0.99 |
| DT⁃N | 1.30 | 371 | -5.57 | -2.23 | 3.34 | 0.97 |
| DT⁃A | 1.28 | 420 | -5.55 | -2.60 | 2.95 | 0.95 |
Table 1 Data measured by CV and UV-Vis
| Molecule | Eox/V | λabs/nm | EHOMO/eV | ELUMO/eV | Eg/eV | ε/eV |
|---|---|---|---|---|---|---|
| DT⁃B | 1.32 | 366 | -5.59 | -2.20 | 3.39 | 0.99 |
| DT⁃N | 1.30 | 371 | -5.57 | -2.23 | 3.34 | 0.97 |
| DT⁃A | 1.28 | 420 | -5.55 | -2.60 | 2.95 | 0.95 |
| Molecule | Conductance/μS | Formation probability(%) | Ratio of formation probability | ||
|---|---|---|---|---|---|
| Au⁃π Au⁃S | Au⁃π | Au⁃S | |||
| DT⁃B | 4.26×10-1 | 8.90×10-3 | 25.4 | 74.6 | 0.34∶1 |
| DT⁃N | 4.26×10-1 | 1.09×10-2 | 24.3 | 75.7 | 0.32∶1 |
| DT⁃A | 4.46×10-1 | 1.26×10-2 | 9.7 | 90.3 | 0.11∶1 |
Table 2 Summary of conductance and formation rate of DT-B, DT-N and DT-A
| Molecule | Conductance/μS | Formation probability(%) | Ratio of formation probability | ||
|---|---|---|---|---|---|
| Au⁃π Au⁃S | Au⁃π | Au⁃S | |||
| DT⁃B | 4.26×10-1 | 8.90×10-3 | 25.4 | 74.6 | 0.34∶1 |
| DT⁃N | 4.26×10-1 | 1.09×10-2 | 24.3 | 75.7 | 0.32∶1 |
| DT⁃A | 4.46×10-1 | 1.26×10-2 | 9.7 | 90.3 | 0.11∶1 |
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