Fluorescence

class specatalog.models.measurements.Fluorescence(**kwargs)[source]

Fluorescence measurement.

This subclass of Measurement represents a Fluorescence experiment. This model adds the Fluorescence-specific parameters excitation, excitation_wl and od.

The model participates in SQLAlchemy polymorphism using the "fluorescence" polymorphic_identity. Any row in measurements where method='fluorescence' is therefore automatically loaded as a Fluorescence instance.

id

Primary key linked to measurements.id with cascading delete.

Type:: int

excitation

Indicate wheather the data are an excitation (True) or emission (False) spectrum.

Type:: boolean

excitation_wl

Excitation wavelength incl. unit.

Type:: str

od

Optical density / absorbance.

Type:: str or None

Notes

The tablename is fluorescence.
All shared measurement metadata (temperature, solvent, operator, timestamps, file path, etc.) are inherited from Measurement.
The id corresponds directly to the entry in the main measurements table via single-table inheritance.

Examples

Creating a Fluorescence measurement:

>>> from measurements import Fluorescence
>>> from molecules import Molecule
>>> mol = Molecule(name="PDI-TEMPO")
>>> m = Fluorescence(
...     molecule=mol,
...     method="uvvis",
...     temperature=298,
...     solvent="Toluene",
...     date=date(2025, 4, 12),
...     measured_by="Bob",
...     path="/data/M21/measurement_M21.h5",
...     corrected=False,
...     evaluated=False,
...     excitation=True,
...     excitation_wl="560nm"
... )
>>> session.add(m)
>>> session.commit()

Loading via polymorphism:

>>> m = session.query(Measurement).filter_by(id=21).one()
>>> type(m)
<class 'models.Fluorescence'>