Dibenzyl Isophthalates as Versatile Hosts in Room Temperature Phosphorescence Host-Guest Systems

23 May 2024, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


We report a series of dibenzyl isophthalates (DBIs) as versatile hosts for room-temperature phosphorescence (RTP) systems, leading to host-guest systems with quantum yields (QY) of up to 77 % or lifetimes of up to 21.0 s for the guest coronene d12. Furthermore, a 4,4’-Br substituted DBI was used to form host-guest RTP systems with 15 different aromatic guest molecules, to tune the phosphorescence emission color from blue to red and to demonstrate the versatility of the host. Mechanistic insights were gained through a host-guest-matrix system which shows RTP already by trace combinations of a 4,4’ Br DBI host (0.10 wt%) and a pyrene-d10 guest (0.01 wt%) in an otherwise non-RTP-emissive aromatic matrix


room temperature phosphorescence

Supplementary materials

Supporting Information
Experimental details


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