An abnormal phenomenon on O2(a1Δ) deactivation by deuterated alcohols

- The deactivation rate constants (kΔ) of O2(a1Δ) by gaseous alcohols are measured.
- An abnormal phenomenon of O2(a1Δ) deactivation is for the first time reported.
- Gaseous kΔ values for deuterated alcohols are larger than their liquid-phase data.
- The mechanism for this abnormal phenomenon is discussed.