TY  - JOUR
A1  - Wu, Zhu
A1  - Nitsch, Jörn
A1  - Marder, Todd B.
T1  - Persistent room-temperature phosphorence from purely organic molecules and multi-component systems
JF  - Advanced Optical Materials
N2  - Recently, luminophores showing efficient room-temperature phosphorescence (RTP) have gained tremendous interest due to their numerous applications. However, most phosphors are derived from transition metal complexes because of their intrinsic fast intersystem crossing (ISC) induced by strong spin–orbit coupling (SOC) constants of the heavy metal. 

Metal-free RTP materials are rare and have become a promising field because they are inexpensive and environmentally friendly. This review summarizes organic molecular materials with long triplet lifetimes at room temperature from the perspective of whether they stem from a molecular or multi-component system. Among purely organic phosphors, heteroatoms are usually introduced into the backbone in order to boost the singlet–triplet ISC rate constant. 

In multi-component systems, useful strategies such as host–guest, polymer matrix, copolymerization, and supramolecular assembly provide a rigid matrix to restrict nonradiative pathways thus realizing ultralong RTP.
KW  - inorganic chemistry
KW  - non-radiative  decay
KW  - polymer matrix
KW  - intersystem  crossing
KW  - luminescence
KW  - photophysics
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-256415
VL  - 9
IS  - 20
ER  -