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Volumn 126, Issue 8, 2004, Pages 2568-2573

Electrons Are Transported through Phenylene-Ethynylene Oligomer Monolayers via Localized Molecular Orbitals

Author keywords

[No Author keywords available]

Indexed keywords

BENZENE; ELECTRIC CONDUCTANCE; ELECTROCHEMISTRY; ETHYLENE; MONOLAYERS; SUBSTITUTION REACTIONS; SULFUR;

EID: 10744225627     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja038189c     Document Type: Article
Times cited : (87)

References (34)
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    • See, for example, Sikes, H. D.; Smalley, J. F.; Dudek, S. P.; Cook, A. R.; Newton, M. D.; Chidsey, C. E. D.; Feldberg, S. W. Science 2001, 291, 1519-1523; Creager, S. E.; Yu, C. J.; Bamdad, C.; O'Connor, S.; MacLean, T.; Lam, E.; Chong, Y.; Olsen, G. T.; Luo, J.; Gojin, M.; Kayyem, J. F. J. Am. Chem. Soc. 1999, 121, 1059-1064.
    • (2001) Science , vol.291 , pp. 1519-1523
    • Sikes, H.D.1    Smalley, J.F.2    Dudek, S.P.3    Cook, A.R.4    Newton, M.D.5    Chidsey, C.E.D.6    Feldberg, S.W.7
  • 17
    • 0036061725 scopus 로고    scopus 로고
    • High-quality SAMs could easily be assembled on Au based on two reliable and reproducible chemical assembly methods-base-promoted or acid-promoted method-and was characterized by ellipsometry and electrochemical techniques. See, for example: Cai, L.; Yao, Y.; Yang, J.; Price, D. W., Jr.; Tour, J. M. Chem. Mater. 2002, 14, 2905-2909 for detailed information.
    • (2002) Chem. Mater. , vol.14 , pp. 2905-2909
    • Cai, L.1    Yao, Y.2    Yang, J.3    Price Jr., D.W.4    Tour, J.M.5
  • 19
    • 1542349569 scopus 로고    scopus 로고
    • note
    • +) = 0.424 V vs SCE. The supporting electrolyte, TBAPF6, was recrystallized twice and dried in a vacuum oven at 100 °C prior to transferring it into an inert-atmosphere drybox, where the EC measurements were carried out. Anhydrous MeCN or mixed MeCN/benzene was used as the solvents.
  • 22
    • 1542379329 scopus 로고    scopus 로고
    • Recent calculations performed by Seminario, J. M. and co-workers [see, for example, J. Am. Chem. Soc. 2002, 124, 10265] and also by Cornil, J. et al. [see, for example, J. Am. Chem. Soc. 2002, 124, 3516] have indeed shown that the actual geometry of the OPE wires can strongly affect the electrical properties of molecular junctions. Despite the fact that there is an almost free rotation around the triple bonds of OPE wires in the gas phase, the actual structure of the molecules in the SAMs investigated in our study is most likely planar since it is well-known that packing effects tend to reduce torsions along conjugated backbones. The choice of a planar conformation is further motivated by the fact that the electronic properties of conjugated systems are slightly affected by small deviations from planarity that are likely to occur in the SAMs (see, Brédas, J. L.; Street, G. B.; Thémans, B.; André, J. M. J. Chem. Phys. 1985, 83, 1323). Torsions could play a more significant role in experiments where a conjugated molecule is inserted into an inert matrix (as in ref 8) or when the whole monolayer is influenced by a static electric field (as in a nanopore), which could modulate cooperatively the torsion angles along the molecular wires.
    • (2002) J. Am. Chem. Soc. , vol.124 , pp. 10265
  • 23
    • 0037051644 scopus 로고    scopus 로고
    • Recent calculations performed by Seminario, J. M. and co-workers [see, for example, J. Am. Chem. Soc. 2002, 124, 10265] and also by Cornil, J. et al. [see, for example, J. Am. Chem. Soc. 2002, 124, 3516] have indeed shown that the actual geometry of the OPE wires can strongly affect the electrical properties of molecular junctions. Despite the fact that there is an almost free rotation around the triple bonds of OPE wires in the gas phase, the actual structure of the molecules in the SAMs investigated in our study is most likely planar since it is well-known that packing effects tend to reduce torsions along conjugated backbones. The choice of a planar conformation is further motivated by the fact that the electronic properties of conjugated systems are slightly affected by small deviations from planarity that are likely to occur in the SAMs (see, Brédas, J. L.; Street, G. B.; Thémans, B.; André, J. M. J. Chem. Phys. 1985, 83, 1323). Torsions could play a more significant role in experiments where a conjugated molecule is inserted into an inert matrix (as in ref 8) or when the whole monolayer is influenced by a static electric field (as in a nanopore), which could modulate cooperatively the torsion angles along the molecular wires.
    • (2002) J. Am. Chem. Soc. , vol.124 , pp. 3516
  • 24
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    • Recent calculations performed by Seminario, J. M. and co-workers [see, for example, J. Am. Chem. Soc. 2002, 124, 10265] and also by Cornil, J. et al. [see, for example, J. Am. Chem. Soc. 2002, 124, 3516] have indeed shown that the actual geometry of the OPE wires can strongly affect the electrical properties of molecular junctions. Despite the fact that there is an almost free rotation around the triple bonds of OPE wires in the gas phase, the actual structure of the molecules in the SAMs investigated in our study is most likely planar since it is well-known that packing effects tend to reduce torsions along conjugated backbones. The choice of a planar conformation is further motivated by the fact that the electronic properties of conjugated systems are slightly affected by small deviations from planarity that are likely to occur in the SAMs (see, Brédas, J. L.; Street, G. B.; Thémans, B.; André, J. M. J. Chem. Phys. 1985, 83, 1323). Torsions could play a more significant role in experiments where a conjugated molecule is inserted into an inert matrix (as in ref 8) or when the whole monolayer is influenced by a static electric field (as in a nanopore), which could modulate cooperatively the torsion angles along the molecular wires.
    • (1985) J. Chem. Phys. , vol.83 , pp. 1323
    • Brédas, J.L.1    Street, G.B.2    Thémans, B.3    André, J.M.4
  • 27
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    • See, for example, Mazur, U.; Hipps, K. W. J. Phys. Chem. B 1999, 103, 9721-2727; Scudiero, L.; Barlow, D. E.; Mazur, U.; Hipps, K. W. J. Am. Chem. Soc. 2001, 123, 4073-4080 and references therein.
    • (1999) J. Phys. Chem. B , vol.103 , pp. 9721-2727
    • Mazur, U.1    Hipps, K.W.2
  • 28
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    • and references therein
    • See, for example, Mazur, U.; Hipps, K. W. J. Phys. Chem. B 1999, 103, 9721-2727; Scudiero, L.; Barlow, D. E.; Mazur, U.; Hipps, K. W. J. Am. Chem. Soc. 2001, 123, 4073-4080 and references therein.
    • (2001) J. Am. Chem. Soc. , vol.123 , pp. 4073-4080
    • Scudiero, L.1    Barlow, D.E.2    Mazur, U.3    Hipps, K.W.4
  • 29
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    • Bard, A. J., Ed.; Marcel Dekker: New York
    • Peover, M. E. Electroanalytical Chemistry; Bard, A. J., Ed.; Marcel Dekker: New York, 1967; Vol. 2, p 40.
    • (1967) Electroanalytical Chemistry , vol.2 , pp. 40
    • Peover, M.E.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.