The Solid-State Emission of Bilirubin

<p>Bilirubin (BR) is a human-biological compound formed during the haem metabolism that is insoluble in most solvents. BR has shown short emission lifetime with low quantum yield in limited number of solvents, due to the non-radiative ultrafast isomerization process. However, in solid-state, red-shifted emission of long-lived species of BR are detected at room temperature, due to the aggregation-induced emission formed by Frenkel exciton of J-system. This solid-state emission of BR depends on the crystal quality of BR as shown by SEM and XRD. This study allows for better understandings of the photophysics of BR in solid-state, opening opportunities for its applications in luminescent biological sensors. </p>

The Solid-State Emission of Bilirubin

<p>Bilirubin (BR) is a human-biological compound formed during the haem metabolism that is insoluble in most solvents. BR has shown short emission lifetime with low quantum yield in limited number of solvents, due to the non-radiative ultrafast isomerization process. However, in solid-state, red-shifted emission of long-lived species of BR are detected at room temperature, due to the aggregation-induced emission formed by Frenkel exciton of J-system. This solid-state emission of BR depends on the crystal quality of BR as shown by SEM and XRD. This study allows for better understandings of the photophysics of BR in solid-state, opening opportunities for its applications in luminescent biological sensors. </p>

Improved population operators for multi-state nonadiabatic dynamics with the mixed quantum-classical mapping approach

Application to the 7-state Frenkel-exciton Hamiltonian for the Fenna–Matthews–Olson complex shows that using a different representation of the electronic population operators can drastically improve the accuracy of the quasiclassical mapping approach without increasing the computational effort.

Can we utilize the higher Frenkel exciton state in biazulene diimides-based non-fullerene acceptors to promote charge separation at the donor/acceptor interface?

The pathway of charge transfer from the Frenkel exciton state of the acceptor to charge transfer states was investigated.