please paraphrase this paragraph
Fluorescence is a relatively faster phenomenon as compared withphosphorescence because of spontaneous emission of energy from S1to S0. If it chooses the nonradiative path from S1 to a tripletstate, T1 results in the slower decay of the process to reach theground state S0. During this time interval, quenchers such asmolecular oxygen can be involved in phosphorescence emission of thefluorophore. The process of quenching of the excited fluorophore inthe triplet state by molecular oxygen can be one of the threedifferent possible pathways such as energy transfer, electrontransfer, and simple physical deactivation.
For the transition-metal complexes such as ruthenium, theenergy-transfer mechanism is the most possible mechanism and it isdominated by the molecular collision thus limited by the diffusionof the quencher and is given by the Stern−Volmer relation. On thebasis of the data derived from previous reports, a hydrophobicfluorophore of the ruthenium-based metal-ligand complex wasselected for our sensing applications. To avoid the photobleachingeffect of the fluorophore, a suitable substrate material has to bechosen and this provided broad adaptability to the specific needs.Afluorophore can be tethered or encapsulated onto a substratematerial, and it can be in the form of a thin film or particle.
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