Langmuir-Blodgett films and photophysical properties of a C{sub 60}-sarcosine methyl ester derivative, C{sub 60}(C{sub 5}H{sub 9}NO{sub 2})
- Peking Univ., Beijing (China); and others
A new C{sub 60}-sarcosine methyl ester derivative, C{sub 60}(C{sub 5}H{sub 9}NO{sub 2}) (1), was prepared, and its Langmuir films with and without dioctadecyldimethylammonium bromide (DODMAB) were formed at the air/water interface. Pure 1 forms monolayer or multilayer films depending on the experimental conditions. The 1:1 mixed Langmuir film of 1 and DODMAB was transferred onto hydrophilic quartz substrates both in Z and Y type. Macroscopic second-harmonic generation from the mixed LB film was observed, and the second-order molecular susceptibility {Chi}{sup (2)} and hyperpolarizability {Beta} were evaluated. The first observations of room-temperature photoluminescence of 1 from both the mixed LB film and its CHCl{sub 3} solution and its fluorescence quenching by concentration and N,N-dimethylaniline (DMA) were reported. Its singlet energy is estimated to be 40.2 kcal/mol. Its fluorescence lifetime in CHCl{sub 3} solution is determined to be 1.0{+-}0.3 ns using the frequency-domain method. 43 refs., 9 figs.
- OSTI ID:
- 219704
- Journal Information:
- Journal of Physical Chemistry, Vol. 100, Issue 8; Other Information: PBD: 22 Feb 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Formation of Langmuir-Blodgett films of a fullerene
Structural and optical nonlinear characterizations of Langmuir-Blodgett films of 1-benzyl-9-hydrofullerene-60