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Quantum Yield of Fluorescence Formula

GoFluorescence Quantum Yield Formula

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Quantum Yield of Fluorescence is a measure of the efficiency of photon emission as defined by the ratio of the number of photons emitted to the number of photons absorbed. Check FAQs

φ fl = \frac{K f}{K f + R IC + K ISC}

φ_fl - Quantum Yield of Fluorescence?K_f - Rate Constant of Fluoroscence?R_IC - Rate of Internal Conversion?K_ISC - Rate Constant of Intersystem Crossing?

Quantum Yield of Fluorescence Example

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Here is how the Quantum Yield of Fluorescence equation looks like with Values.

Here is how the Quantum Yield of Fluorescence equation looks like with Units.

Here is how the Quantum Yield of Fluorescence equation looks like.

0.0116 = \frac{750}{750 + 25 + 64000}

0.0116 = \frac{750rev/s}{750rev/s + 25rev/s + 64000rev/s}

0.0116 = \frac{750}{750 + 25 + 64000}

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Quantum Yield of Fluorescence Solution

Follow our step by step solution on how to calculate Quantum Yield of Fluorescence?

FIRST Step Consider the formula

φ fl = \frac{K f}{K f + R IC + K ISC}

Next Step Substitute values of Variables

∴

φ fl = \frac{750rev/s}{750rev/s + 25rev/s + 64000rev/s}

Next Step Convert Units

∴

φ fl = \frac{750Hz}{750Hz + 25Hz + 64000Hz}

Next Step Prepare to Evaluate

∴

φ fl = \frac{750}{750 + 25 + 64000}

Next Step Evaluate

∴

φ fl = 0.0115785411038209

LAST Step Rounding Answer

∴

φ fl = 0.0116

Quantum Yield of Fluorescence Formula Elements

Variables

Quantum Yield of Fluorescence

Quantum Yield of Fluorescence is a measure of the efficiency of photon emission as defined by the ratio of the number of photons emitted to the number of photons absorbed.

Symbol: φ_fl

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Quantum Yield of Fluorescence

Rate Constant of Fluoroscence

Rate Constant of Fluoroscence is the rate at which spontaneous emission occurs.

Symbol: K_f

Measurement: FrequencyUnit: rev/s

Note: Value can be positive or negative.

Formulas to find Rate Constant of Fluoroscence

Rate of Internal Conversion

Rate of Internal Conversionis the difference between the total and the radiative one.

Symbol: R_IC

Measurement: FrequencyUnit: rev/s

Note: Value can be positive or negative.

Formulas to find Rate of Internal Conversion

Rate Constant of Intersystem Crossing

Rate Constant of Intersystem Crossing is the rate of decay from excited singlet electronic state to triplet state.

Symbol: K_ISC

Measurement: FrequencyUnit: rev/s

Note: Value can be positive or negative.

Formulas to find Rate Constant of Intersystem Crossing

Other Formulas to find Quantum Yield of Fluorescence

Go Fluorescence Quantum Yield

φ fl = \frac{K rad}{K rad + R IC + K ISC + K q}

Other formulas in Emission Spectroscopy category

Go Fluoroscence Quantum Yield given Phosphorescence Quantum Yield

φ FL = φ ph \cdot (\frac{K f \cdot [M S1]}{K p \cdot [M T]})

Go Phosphorescence Quantum Yield

φ p = \frac{K rad}{K rad + K NR}

Go Phosphorescence Quantum Yield given Intersystem Quantum Yield

φ ph_ISC = (\frac{K p}{I a}) \cdot ({(\frac{I a \cdot φ_ISC}{K TTA})}^{\frac{1}{2}})

Go Phosphorescence Quantum Yield given Triplet Triplet Annhilation Constant

φ ph-TTA = \frac{K p \cdot φ ISC}{K p + K ISC + K TTA}

How to Evaluate Quantum Yield of Fluorescence?

Quantum Yield of Fluorescence evaluator uses Quantum Yield of Fluorescence = Rate Constant of Fluoroscence/(Rate Constant of Fluoroscence+Rate of Internal Conversion+Rate Constant of Intersystem Crossing) to evaluate the Quantum Yield of Fluorescence, The Quantum Yield of Fluorescence is the ratio of photons absorbed to photons emitted through fluorescence. In other words the quantum yield gives the probability of the excited state being deactivated by fluorescence rather than by another, non-radiative mechanism. Quantum Yield of Fluorescence is denoted by φ_fl symbol.

How to evaluate Quantum Yield of Fluorescence using this online evaluator? To use this online evaluator for Quantum Yield of Fluorescence, enter Rate Constant of Fluoroscence (K_f), Rate of Internal Conversion (R_IC) & Rate Constant of Intersystem Crossing (K_ISC) and hit the calculate button.

FAQs on Quantum Yield of Fluorescence

What is the formula to find Quantum Yield of Fluorescence?

The formula of Quantum Yield of Fluorescence is expressed as Quantum Yield of Fluorescence = Rate Constant of Fluoroscence/(Rate Constant of Fluoroscence+Rate of Internal Conversion+Rate Constant of Intersystem Crossing). Here is an example- 0.011579 = 750/(750+25+64000).

How to calculate Quantum Yield of Fluorescence?

With Rate Constant of Fluoroscence (K_f), Rate of Internal Conversion (R_IC) & Rate Constant of Intersystem Crossing (K_ISC) we can find Quantum Yield of Fluorescence using the formula - Quantum Yield of Fluorescence = Rate Constant of Fluoroscence/(Rate Constant of Fluoroscence+Rate of Internal Conversion+Rate Constant of Intersystem Crossing).

What are the other ways to Calculate Quantum Yield of Fluorescence?

Here are the different ways to Calculate Quantum Yield of Fluorescence-

Quantum Yield of Fluorescence=Rate of Radiative Reaction/(Rate of Radiative Reaction+Rate of Internal Conversion+Rate Constant of Intersystem Crossing+Quenching Constant)

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Quantum Yield of Fluorescence Formula

​GoFluorescence Quantum Yield Formula

Quantum Yield of Fluorescence Example

Quantum Yield of Fluorescence Solution

Quantum Yield of Fluorescence Formula Elements

Other Formulas to find Quantum Yield of Fluorescence

Other formulas in Emission Spectroscopy category

How to Evaluate Quantum Yield of Fluorescence?

FAQs on Quantum Yield of Fluorescence

Variable Name

GoFluorescence Quantum Yield Formula