Investigation of the photoelectrochemistry of C{sub 60} and its pyrrolidine derivatives by monolayer-modified SnO{sub 2} electrodes

Journal Article · Thu Oct 10 00:00:00 EDT 1996 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/jp961428g· OSTI ID:420860

Luo, C; Huang, C; Gan, L; Zhou, D; Xia, W; Zhuang, Q; Zhao, Y; Huang, Y ^[1]

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1. Peking Univ., Beijing (China)

A monolayer of a C{sub 60} mixture with arachidic acid (1:1) and C{sub 60} -pyrrolidine derivatives [C{sub 60}(C{sub 3}H{sub 6}NR); R = H(1), C{sub 6}H{sub 5} (2), o-C{sub 6}H{sub 4}NO{sub 2} (3), and o-C{sub 6}H{sub 4}NMe{sub 2} (4)] were successfully obtained at the air/water interface and deposited onto solid substrates with transfer ratios of about 0.90 {+-} 0.05 at 30 mN.m{sup -1} by the Langmuir-Blodgett (LB) technique. The photoelectrochemical investigation of these compounds on SnO{sub 2} electrodes was carried out. The photocurrent was determined under nitrogen atmosphere because oxygen can suppress the photocurrents. Results showed that electrons flow from the electrolyte through LB film to SnO{sub 2} and a chemical energy conversion occurs together with the photoelectric conversion. Positive bias voltage, electron donor, the incident light intensity, and the electron-repulsion groups in the derivatives are beneficial factors for generating higher photocurrent. The quantum yields vary from 0.015 to 0.069 for C{sub 60} and its derivatives 1-4. 17 refs., 6 figs., 3 tabs.

• OSTI ID: 420860
• Journal Information: Journal of Physical Chemistry, Vol. 100, Issue 41; Other Information: PBD: 10 Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
FULLERENES
PHOTOCHEMICAL REACTIONS
PHOTOCURRENTS
PYRROLIDONES
THIN FILMS
ORGANIC COMPOUNDS
TIN OXIDES
ELECTRODES
PHOTOELECTRIC EFFECT
ENERGY CONVERSION