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ISC Rate Constant Formula

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Rate Constant of ISC is the rate of decay from excited singlet electronic state to triplet state. Check FAQs

K i = R ISC \cdot [M S1]

K_i - Rate Constant of ISC?R_ISC - Rate of Intersystem Crossing?[M_S1] - Singlet State Concentration?

ISC Rate Constant Example

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With units

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Here is how the ISC Rate Constant equation looks like with Values.

Here is how the ISC Rate Constant equation looks like with Units.

Here is how the ISC Rate Constant equation looks like.

64000 = 3200 \cdot 2E-5

64000rev/s = 3200mol/L*s \cdot 2E-5mol/L

64000 = 3200 \cdot 2E-5

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ISC Rate Constant Solution

Follow our step by step solution on how to calculate ISC Rate Constant?

FIRST Step Consider the formula

K i = R ISC \cdot [M S1]

Next Step Substitute values of Variables

∴

K i = 3200mol/L*s \cdot 2E-5mol/L

Next Step Convert Units

∴

K i = 3.2E+6mol/m³*s \cdot 0.02mol/m³

Next Step Prepare to Evaluate

∴

K i = 3.2E+6 \cdot 0.02

Next Step Evaluate

∴

K i = 64000Hz

LAST Step Convert to Output's Unit

∴

K i = 64000rev/s

ISC Rate Constant Formula Elements

Variables

Rate Constant of ISC

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

Symbol: K_i

Measurement: FrequencyUnit: rev/s

Note: Value can be positive or negative.

Formulas to find Rate Constant of ISC

Rate of Intersystem Crossing

Rate of Intersystem Crossing is the rate of an isoenergetic radiationless process involving a transition between the two electronic states with different spin multiplicity.

Symbol: R_ISC

Measurement: Reaction RateUnit: mol/L*s

Note: Value can be positive or negative.

Formulas to find Rate of Intersystem Crossing

Singlet State Concentration

Singlet State Concentration is the number of molecules present in the singlet excited state.

Symbol: [M_S1]

Measurement: Molar ConcentrationUnit: mol/L

Note: Value can be positive or negative.

Formulas to find Singlet State Concentration

Other formulas in Emission Spectroscopy category

Go Fluorescence Rate Constant

K f = \frac{R f}{[M S1]}

Go Fluoroscence Intensity

I F = \frac{K f \cdot I a}{K f + K NR}

Go Fluoroscence Intensity without Quenching

I_o = \frac{K f \cdot I a}{K NR + K f}

Go Initial Intensity given Degree of Exciplex Formation

Io α = K f \cdot \frac{K eq}{K f + K NR}

How to Evaluate ISC Rate Constant?

ISC Rate Constant evaluator uses Rate Constant of ISC = Rate of Intersystem Crossing*Singlet State Concentration to evaluate the Rate Constant of ISC, The ISC Rate Constant formula is defined as the rate of decay from excited singlet electronic state to triplet state. It is the constant of a dynamical process that arises from spin-orbit coupling between electronic states belonging to different electron spin multiplicities. Rate Constant of ISC is denoted by K_i symbol.

How to evaluate ISC Rate Constant using this online evaluator? To use this online evaluator for ISC Rate Constant, enter Rate of Intersystem Crossing (R_ISC) & Singlet State Concentration ([M_S1]) and hit the calculate button.

FAQs on ISC Rate Constant

What is the formula to find ISC Rate Constant?

The formula of ISC Rate Constant is expressed as Rate Constant of ISC = Rate of Intersystem Crossing*Singlet State Concentration. Here is an example- 64000 = 3200000*0.02.

How to calculate ISC Rate Constant?

With Rate of Intersystem Crossing (R_ISC) & Singlet State Concentration ([M_S1]) we can find ISC Rate Constant using the formula - Rate Constant of ISC = Rate of Intersystem Crossing*Singlet State Concentration.

Can the ISC Rate Constant be negative?

Yes, the ISC Rate Constant, measured in Frequency can be negative.

Which unit is used to measure ISC Rate Constant?

ISC Rate Constant is usually measured using the Revolution per Second[rev/s] for Frequency. Hertz[rev/s], Petahertz[rev/s], Terahertz[rev/s] are the few other units in which ISC Rate Constant can be measured.

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ISC Rate Constant Formula

ISC Rate Constant Example

ISC Rate Constant Solution

ISC Rate Constant Formula Elements

Other formulas in Emission Spectroscopy category

How to Evaluate ISC Rate Constant?

FAQs on ISC Rate Constant

Variable Name