## Efficiency of Energy Transfer using Distances Solution

STEP 0: Pre-Calculation Summary
Formula Used
Efficiency of Energy Transfer = 1/(1+(Donor to Acceptor Distance/Forster Critical Distance)^6)
E = 1/(1+(r/R0)^6)
This formula uses 3 Variables
Variables Used
Efficiency of Energy Transfer - The Efficiency of Energy Transfer describes the efficiency of energy transfer between two light-sensitive molecules (chromophores).
Donor to Acceptor Distance - (Measured in Meter) - Donor to Acceptor Distance is the distance between the donor and the acceptor molecules.
Forster Critical Distance - (Measured in Meter) - The Forster Critical Distance is the distance at which the energy transfer efficiency is 50%.
STEP 1: Convert Input(s) to Base Unit
Donor to Acceptor Distance: 50 Angstrom --> 5E-09 Meter (Check conversion here)
Forster Critical Distance: 40 Angstrom --> 4E-09 Meter (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
E = 1/(1+(r/R0)^6) --> 1/(1+(5E-09/4E-09)^6)
Evaluating ... ...
E = 0.207697378429086
STEP 3: Convert Result to Output's Unit
0.207697378429086 --> No Conversion Required
FINAL ANSWER
0.207697378429086 0.207697 <-- Efficiency of Energy Transfer
(Calculation completed in 00.004 seconds)
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Created by Abhijit gharphalia
national institute of technology meghalaya (NIT Meghalaya), Shillong
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## < 11 Förster resonance energy transfer Calculators

Forster Critical Distance
Forster Critical Distance = 0.0211*((Refractive Index of Medium)^(-4)*(Fluorescence Quantum Yield without FRET)*(Orientation Factor)*(Spectral Overlap Integral))^(1/6)
Efficiency of Energy Transfer using Rate of Energy Transfer
Efficiency of Energy Transfer = Rate of Energy Transfer/(Rate of Energy Transfer+Rate of Non radiative Transitions+Rate of Radiative Transitions)
Donor Lifetime with FRET using Rate of Energy and Transitions
Donor Lifetime with FRET = 1/(Rate of Energy Transfer+Rate of Radiative Transitions+Rate of Non radiative Transitions)
Rate of Energy Transfer using Distances and Donor Lifetime
Rate of Energy Transfer = (1/Donor Lifetime)*(Forster Critical Distance/Donor to Acceptor Distance)^6
Efficiency of Energy Transfer using Photobleaching Decay Time Constant
Efficiency of Energy Transfer = 1-(Photobleaching Decay Time Constant/Photobleaching Decay Time Constant with FRET)
Efficiency of Energy Transfer using Distances
Efficiency of Energy Transfer = 1/(1+(Donor to Acceptor Distance/Forster Critical Distance)^6)
Efficiency of Energy Transfer using Fluorescence Intensity of Donor
Efficiency of Energy Transfer = 1-(Fluorescence Intensity with FRET/Fluorescence intensity)
Efficiency of Energy Transfer using Rate of Energy Transfer and Donor Lifetime
Efficiency of Energy Transfer = Rate of Energy Transfer/(1/Donor Lifetime with FRET)
Donor Lifetime using Rates of Transitions
Donor Lifetime = 1/(Rate of Radiative Transitions+Rate of Non radiative Transitions)
Fluorescence Quantum Yield in FRET
Fluorescence Quantum Yield = Number of Photons Emitted/Number of Photons Absorbed
Efficiency of Energy Transfer using Donor Lifetime
Efficiency of Energy Transfer = 1-(Donor Lifetime with FRET/Donor Lifetime)

## Efficiency of Energy Transfer using Distances Formula

Efficiency of Energy Transfer = 1/(1+(Donor to Acceptor Distance/Forster Critical Distance)^6)
E = 1/(1+(r/R0)^6)

## What is FRET (Förster resonance energy transfer)?

Förster resonance energy transfer (FRET), fluorescence resonance energy transfer, resonance energy transfer (RET) or electronic energy transfer (EET) is a mechanism describing energy transfer between two light-sensitive molecules (chromophores).

## How to Calculate Efficiency of Energy Transfer using Distances?

Efficiency of Energy Transfer using Distances calculator uses Efficiency of Energy Transfer = 1/(1+(Donor to Acceptor Distance/Forster Critical Distance)^6) to calculate the Efficiency of Energy Transfer, The Efficiency of Energy Transfer using Distances formula is defined as the quantum yield of the energy-transfer transition, i.e. the probability of energy-transfer event occurring per donor excitation event. Efficiency of Energy Transfer is denoted by E symbol.

How to calculate Efficiency of Energy Transfer using Distances using this online calculator? To use this online calculator for Efficiency of Energy Transfer using Distances, enter Donor to Acceptor Distance (r) & Forster Critical Distance (R0) and hit the calculate button. Here is how the Efficiency of Energy Transfer using Distances calculation can be explained with given input values -> 0.207697 = 1/(1+(5E-09/4E-09)^6).

### FAQ

What is Efficiency of Energy Transfer using Distances?
The Efficiency of Energy Transfer using Distances formula is defined as the quantum yield of the energy-transfer transition, i.e. the probability of energy-transfer event occurring per donor excitation event and is represented as E = 1/(1+(r/R0)^6) or Efficiency of Energy Transfer = 1/(1+(Donor to Acceptor Distance/Forster Critical Distance)^6). Donor to Acceptor Distance is the distance between the donor and the acceptor molecules & The Forster Critical Distance is the distance at which the energy transfer efficiency is 50%.
How to calculate Efficiency of Energy Transfer using Distances?
The Efficiency of Energy Transfer using Distances formula is defined as the quantum yield of the energy-transfer transition, i.e. the probability of energy-transfer event occurring per donor excitation event is calculated using Efficiency of Energy Transfer = 1/(1+(Donor to Acceptor Distance/Forster Critical Distance)^6). To calculate Efficiency of Energy Transfer using Distances, you need Donor to Acceptor Distance (r) & Forster Critical Distance (R0). With our tool, you need to enter the respective value for Donor to Acceptor Distance & Forster Critical Distance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Efficiency of Energy Transfer?
In this formula, Efficiency of Energy Transfer uses Donor to Acceptor Distance & Forster Critical Distance. We can use 5 other way(s) to calculate the same, which is/are as follows -
• Efficiency of Energy Transfer = Rate of Energy Transfer/(Rate of Energy Transfer+Rate of Non radiative Transitions+Rate of Radiative Transitions)
• Efficiency of Energy Transfer = Rate of Energy Transfer/(1/Donor Lifetime with FRET)
• Efficiency of Energy Transfer = 1-(Donor Lifetime with FRET/Donor Lifetime)
• Efficiency of Energy Transfer = 1-(Fluorescence Intensity with FRET/Fluorescence intensity)
• Efficiency of Energy Transfer = 1-(Photobleaching Decay Time Constant/Photobleaching Decay Time Constant with FRET)
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