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Long-lived metal complexes open up microsecond lifetime imaging microscopy under multiphoton excitation: from FLIM to PLIM and beyond
Lifetime imaging microscopy with sub-micron resolution provides essential understanding of living systems by allowing both the visualisation of their structure, and the sensing of bio-relevantExpand
Structural control of the excited-state dynamics of bis(dipyrrinato)zinc complexes: self-assembling chromophores for light-harvesting architectures.
The results demonstrate that steric constraints on aryl-ring internal rotation dramatically alter the excited-state properties of 5,5'-substituted bis(dipyrrinato)metal complexes and establish the foundation for tuning the photophysical properties of these chromophores for use in diverse photochemical applications. Expand
Controllable three-component luminescence from a 1,8-naphthalimide/Eu(III) complex: white light emission from a single molecule.
A macrocycle-appended naphthalimide derivative and its Eu(III) complex show triple luminescence from isolated naphthalimide (blue), aggregated naphthalimide excimers (green) and Eu centres (red) withExpand
Luminescent cyanometallates based on phenylpyridine-Ir(III) units: solvatochromism, metallochromism, and energy-transfer in Ir/Ln and Ir/Re complexes.
These effects are however modest because of (i) the presence of only two cyanide groups, and (ii) the fact that the lowest-energy excited state has a substantial (3)LC component and is therefore not purely charge-transfer in nature. Expand
Complete Proton Transfer Cycle in GFP and Its T203V and S205V Mutants**
This work exploits femtosecond to microsecond transient IR spectroscopy to record, in D2O, the complete proton transfer photocycle of avGFP, and two mutants (T203V and S205V) which modify the structure of the proton wire. Expand
Two-photon phosphorescence lifetime imaging of cells and tissues using a long-lived cyclometallated Npyridyl^Cphenyl^Npyridyl Pt(II) complex
Using a combination of multiphoton excitation, confocal scanning, TCSPC and beam blanking in conjunction with a cyclometallated Npyridyl^Cphenyl^Npyridyl Pt(II) complex (1) with a long luminescenceExpand
Dinuclear Ruthenium(II) Complexes as Two-Photon, Time-Resolved Emission Microscopy Probes for Cellular DNA**
Ruthenium(II) luminophores are used as phosphorescent lifetime imaging microscopy (PLIM) probes for nuclear DNA in both live and fixed cells, leading to previously unattainable levels of sensitivity, and autofluorescence-free imaging. Expand
Excited-state energy-transfer dynamics in self-assembled triads composed of two porphyrins and an intervening Bis(dipyrrinato)metal complex.
Results indicate that bis(dipyrrinato)zinc(II) complexes can serve as self-assembling linkers that further function as secondary light-collection elements in porphyrin-based light-harvesting arrays. Expand
d → f energy transfer in a series of Ir(III)/Eu(III) dyads: energy-transfer mechanisms and white-light emission.
Calculations based on consideration of spectroscopic overlap integrals rule out any significant contribution from Förster energy transfer over the distances involved but indicate that Dexter-type (exchange) energy transfer is possible if there is a small electronic coupling that would arise, in part, through π stacking between components. Expand
Toward control of electron transfer in donor-acceptor molecules by bond-specific infrared excitation
It is demonstrated how the outcome of light-induced ET can be radically altered by mode-specific infrared (IR) excitation of vibrations that are coupled to the ET pathway, effectively switching a charge separation pathway off. Expand