Intermolecular states in organic dye dispersions : excimers vs aggregates
Date
07/09/2017Author
Grant ID
EP/K039210/1
EP/M025330/1
ep/l017008/1
Metadata
Show full item recordAbstract
Rapid excited-state quenching in the solid state is a widespread limitation for organic chromophores. Even when molecules are dispersed in neutral host matrices, photoluminescence quantum yields decrease sharply with increased concentration, pointing to efficient intermolecular non-radiative decay pathways that remain poorly understood. Here we study the nature of the intermolecular states formed in dispersions the prototypical BODIPY dyes. Using temperature-dependent and time-resolved photoluminescence measurements, we describe the processes of energy transfer into excimer states and, in materials with suitable chemical structure, excitonically coupled dimers. These dimer states exhibit remarkable near-unity quantum yield.
Citation
Musser , A J , Rajendran , S K , Georgiou , K , Gai , L , Grant , R T , Shen , Z , Cavazzini , M , Ruseckas , A , Turnbull , G A , Samuel , I D W , Clark , J & Lidzey , D G 2017 , ' Intermolecular states in organic dye dispersions : excimers vs aggregates ' , Journal of Materials Chemistry C , vol. 5 , no. 33 , pp. 8380-8389 . https://doi.org/10.1039/C7TC02655B
Publication
Journal of Materials Chemistry C
Status
Peer reviewed
ISSN
2050-7526Type
Journal article
Description
This work was supported by the Engineering and Physical Sciences Research Council, U.K. (Grant Number EP/M025330/1, “Hybrid Polaritonics” and Grant Number EP/L017008). I.D.W.S. acknowledges support from a Royal Society Wolfson Research Merit Award.Collections
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