10.1021/acsphotonics.6b00419.s001
Janning F. Herrmann
Janning F.
Herrmann
Paul S. Popp
Paul S.
Popp
Andreas Winter
Andreas
Winter
Ulrich
S. Schubert
Ulrich
S.
Schubert
Christiane Höppener
Christiane
Höppener
Antenna-Enhanced Triplet-State Emission of Individual
Mononuclear Ruthenium(II)-Bis-terpyridine Complexes Reveals Their
Heterogeneous Photophysical Properties in the Solid State
American Chemical Society
2016
supramolecular transition metal coordination complexes
Ru
photonic
photophysical properties
sensitivity
emission
Antenna-Enhanced Triplet-State Emission
bis-terpyridine complexes
radiative charge-separated states
single-complex antenna-enhanced phosphorescence investigations
Heterogeneous Photophysical Properties
2016-09-15 16:03:25
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Antenna-Enhanced_Triplet-State_Emission_of_Individual_Mononuclear_Ruthenium_II_-Bis-terpyridine_Complexes_Reveals_Their_Heterogeneous_Photophysical_Properties_in_the_Solid_State/3830820
The ability of supramolecular transition
metal coordination complexes to form stabilized, long-living, radiative
charge-separated states has drawn interest to employ these triplet-state
emitters for the design of photonic devices. Their applicability as
photosensitizers of electron transfer in molecular photonic systems
is directly coupled to fundamental studies of their rich and highly
versatile photochemical and photophysical properties. Here, we demonstrate
that the properties of individual dual-luminescent Ru<sup>2+</sup>-bis-terpyridine complexes can be addressed with excellent sensitivity
in single-complex antenna-enhanced phosphorescence investigations.
This sensitivity enables studying environmentally imposed alterations
of their photophysical properties, e.g., in thin film applications.
In contrast to ensemble averaging investigations in solution, single-complex
antenna-enhanced phosphorescence investigations corroborate the existence
of Ru<sup>2+</sup>-bis-terpyridine complexes with spectrally shifted
emission peaks and diverging intrinsic quantum yields in the solid
state. Across the sample of investigated individual complexes the
observed emission spectra resemble the expected unique features of
this specific Ru<sup>2+</sup>-bis-terpyridine complex. The origin
of the shifted emission is discussed in terms of the existence of
different molecular conformers of this specific Ru<sup>2+</sup>-bis-terpyridine
complex facilitated by the embedment into a rigid solid matrix.