Pyyromethene-BF2 Complexes as Laser Dyes
Abstract
In 1984, less than two decades after its discovery, a review described the dye laser as one of the most useful and practical of tunable coherent sources. Laser dye activity was presumed to reflect a casual relationship with various ancillary properties including photostability, solubility and other interactions with solvent, fluorescence quantum yield, molar extinction of absorption, and minimal overlap of fluorescence with onset of absorption spectral regions, (S-S) and triplet-triplet (T-T). Bathochromic and hyperchromic shifts were introduced by the substitution of auxochromic and antiauxochromic groups but this benefit was often offset by the ability of certain groups, e.g. nitro, cyano, and heavy atoms, to quench laser activity. Since the known dyes were each deficient in one or more properties the search for new structures to offer superior performance standards was undertaken. Keywords: Laser action in pyrromethene-BF2 complex, Synthesis, Boron trifluoride, TMP, PMP, HMP, PMDEP, Chlorosulfonation, PMPDS, Condensation.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 24, 1990
- Accession Number
- ADA223562
Entities
People
- Joseph H. Boyer
- Kannappan Thangaraj
- Lionel T. Wolford
- Mayur Shah
- Mou-ling Soong