New fullerene-based mixed materials: Synthesis and characterization
- Los Alamos National Lab., NM (US)
- Univ. of California, Santa Barbara, CA (US)
This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The authors present results of broadband femtosecond transient absorption and broadband nanosecond optical limiting studies of C{sub 60} and derivatized C{sub 60}. They have investigated both solutions and solid-state mixed materials (sol-gel glass hosts doped with fullerene guests). They show that derivatized fullerenes provide enhanced solubility and processability, with a ground-state absorption extended into the infrared compared with C{sub 60}. They have extensively studied both the dynamic optical response and the excited-state absorption cross sections of solutions and solids for multiple wavelengths in the visible to near infrared. Wavelength-dependent studies show that the optical limiting response improves monotonically at longer wavelengths, demonstrating broadband limiting in all 6,6 mono-adducts and neat C{sub 60}. The authors report new approaches to processing sol-gel glass/fullerene composites to improve the optical limiting performance of solid-state materials to approach the response of solution limiters.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Management and Administration, Washington, DC (US)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 676884
- Report Number(s):
- LA-UR-98-1832; ON: DE99000840; TRN: US200304%%386
- Resource Relation:
- Other Information: Supercedes report DE99000840; PBD: [1998]; PBD: 1 Nov 1998
- Country of Publication:
- United States
- Language:
- English
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