Interchain energy migration

Amplification of C emission upon excitation of CPE, relative to that upon direct excitation of C is an important advantage of CPE-based FRET sensors, which benefits from the rapid intrachain and interchain energy migration from CPE to C via FRET. The detection sensitivity of CCP-based DNA sensor thus is enhanced to an extent dependent on the signal amplification of C emission. Amplification factor is defined as the intensity ratio of the saturated CCP-sensitized C emission to the intrinsic C emission in the absence of CCP. To acquire large signal amplification, it is necessary to review the factors affecting the FRET process from CCP to C. Equation (1) describes the calculation of FRET rate (KVRi T) [67] ... 

Intra- and interchain energy transfer from the lowest 1 B to another conjugated segment or heteromolecule [94]. (If this process is happening in multiple steps, it is denoted as excitation energy migration.) ... 

B. J. Schwartz, T.-Q. Nguyen, J. Wu, and S. H. Tolbert, Interchain and intrachain exciton transport in conjugated polymers ultrafast studies of energy migration in aligned MEH-PPV/mesoporous silica composites, Synthetic Metals, vol. 116, no. 1-3, pp. 35-40, 2001. 

Electronic energy transfer and migration in conjugated polymers is important for many applications, and can involve either on-chain or interchain processes. With singlet states, conjugated polymers may have... 

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