Structural and optical nonlinear characterizations of Langmuir-Blodgett films of 1-benzyl-9-hydrofullerene-60

Journal Article · Thu Oct 10 04:00:00 EDT 1996 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/jp960911o· OSTI ID:420861

Ma, S; Lu, X; Chen, J ^[1]; and, others

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1. Fudan Univ., Shanghai (China)

The structural and optical nonlinear features of the condensed layers at the air-water interface and Langmuir-Blodgett (LB) films of the substituted fullerene 1-benzyl-9-hydrofullerene-60 (C{sub 60}-Be) were investigated by {pi}-A isotherm, small angle X-ray diffraction (SAXD), and optical measurements. Pure C{sub 60}-Be molecules existed at the air-water interface in a bulk phase. A new type of two-chain amphiphilic molecule, 1, 10-bistearyl-4, 6, 13, 15-tetraene-18-nitrogen-crown-6 (NC), was used as an inert material to construct mixed C{sub 60}-Be/NC LB films of much better quality than the pure C{sub 60}-Be LB films. Our {pi}-A, UV-visible absorption, and SAXD measurements show that the structural improvement in the mixed C{sub 60}-Be/NC LB films was realized by insertion of the C{sub 60}-Be molecules between the two hydrophobic chains of the NC molecules. The relatively large third-order nonlinear susceptibility {Chi}{sup (3)}{sub {chi}{chi}{chi}{chi}}(-3{omega}; {omega},{omega},{omega}) = 2.1 x 10{sup -11} esu was deduced by measuring third-harmonic generation in the mixed C{sub 60}-Be/NC LB films. 13 refs., 7 figs.

• OSTI ID: 420861
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 41 Vol. 100; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ABSORPTION SPECTRA
FULLERENES
MOLECULAR STRUCTURE
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
THIN FILMS
VISIBLE SPECTRA
X-RAY DIFFRACTION