Physical Consequences of a Mechanically Interlocked Architecture: Benzylic Amide Catenane NH Stretching Vibrations as Sensitive Probes for Weakly Hydrogen-Bonding Environments
✍ Scribed by Charles-Andre Fustin; David A. Leigh; Petra Rudolf; Dirk Timpel; Francesco Zerbetto
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 112 KB
- Volume
- 1
- Category
- Article
- ISSN
- 1439-4235
No coin nor oath required. For personal study only.
✦ Synopsis
97
septa for quenching experiments. In the latter case, the photoluminescence measurements were measured shortly after preparation. UV/Vis spectra of compounds 1 ± 5 in solution (10 À3 ± 10 À4 M) were collected on Cary 5-G Varian spectrophotometer. Emission and excitation spectra were recorded in a Edinburgh FS-900 spectrophotometer. Quantum yields were obtained using a solution of naphthalene in cyclohexane as reference, whose optical density matched that of the samples at the excitation wavelength. For oxygen quenching, the solutions were purged with an oxygen stream for at least 10 min before photoluminescence measurements. Lifetimes were measured with a FL-900 single-photon counting photometer using a nanosecond hydrogen flash lamp.