In Type-II reaction, the excited- state molecule reacts directly with 3O2 to generate highly toxic triplet state
oxygen (1O2) [1, 3].
Since orthohelium is trapped in the excited triplet state
, it has an opportunity to once again react with hydrogen, as displayed in the lower portion of Fig.
The phosphorescence spectra of ketones with an n-[pi]* nature of the lowest triplet state
are usually structured due to the vibrational progression of the C=0 vibration, and [pi]-[pi]* triplets are mostly unstructured.
The result of excitation is that the sensitizer moves from an electronic ground state to a triplet state
that then interacts with microbial components to generate cytotoxic species.
The radiative and non radiative relaxation of the triplet state
are represented by [k.
Through the discovery of phosphorescent diodes, those triplet states
are light-generating instead of heat-generating.
The presence of oxygen influences the outcome of a photochemical reaction, oxygen being a very good radical and triplet state
Photo-induced generation of the excited triplet state
triggers an intramolecular rearrangement and elimination of the acyl group (Fig.
The state in which the spins are antiparallel is called the singlet state, and the one in which the spins are parallel is called the triplet state
Orientational blinking ensures single emitter localization via a combination of polarization sensitive excitation, detection and stimulated depletion and triplet state
Since the Pauli exclusion principle for identical particles forbids the interaction of two neutrons in the triplet state
, the cross section [[sigma].
Then, as in OPE-PDT, the excited molecule can undergo intersystem crossing into its triplet state
from which the PDT effect occurs.