Journal: Nature Communications

Article Title: Selective manipulation of electronically excited states through strong light–matter interactions

doi: 10.1038/s41467-018-04736-1

Figure Lengend Snippet: Molecular system for realizing strong light–matter coupling. a Jablonski diagram presenting strong coupling of a molecular state ( S 1 ) with a cavity mode ( ħω ) that has the same energy and leads to the formation of two new hybrid light–matter states, P + and P − , which are separated in energy by the Rabi splitting ( ħΩ R ). b Absorption (black line) and emission (purple line) spectra of 1 wt% ErB in a PVA matrix deposited on a glass substrate. Inset shows the chemical structure of ErB. c Structure of the non-transparent Fabry–Pérot cavity, where two Ag mirrors sandwich a PVA film containing ErB. PMMA 10 nm films, deposited between the mirror and chromophore layer, were used to prevent direct contact between ErB and the Ag mirror

Article Snippet: ErB (Sigma Aldrich) was dissolved in water containing PVA (88% hydrolyzed, Acros Organics, 25–35 mg mL −1 ).

Techniques:

Journal: Nature Communications

Article Title: Selective manipulation of electronically excited states through strong light–matter interactions

doi: 10.1038/s41467-018-04736-1

Figure Lengend Snippet: Characterization of hybrid light–matter states. a Absorbance spectra of ErB/PVA films inside a cavity that has an ErB concentration between 0.01 M (black) and 0.54 M (purple). The thickness of the cavities were optimized as to give a roughly equal magnitude of the lower and upper polariton absorption. b The linear dependence of the Rabi splitting in the strong coupling regime on the square root of [ErB]. The strong/weak coupling limit is visualized as a line at 140 meV. c Transmission spectra of a 0.54 M ErB/PVA film inside a cavity having two semitransparent mirrors as a function of incidence angle. d Dispersion plot constructed from the data in ( c ) (color map) overlaid with fitted polariton dispersion (white dashed line). The uncoupled non-dispersive ErB absorption ( E x ) and cavity dispersion ( E c ) are shown as dashed lines. The Rabi splitting ( ħΩ R ) is the energy gap between P − and P + at the intersection (or minimum gap) of E x and E c

Article Snippet: ErB (Sigma Aldrich) was dissolved in water containing PVA (88% hydrolyzed, Acros Organics, 25–35 mg mL −1 ).

Techniques: Concentration Assay, Transmission Assay, Construct

Journal: Nature Communications

Article Title: Selective manipulation of electronically excited states through strong light–matter interactions

doi: 10.1038/s41467-018-04736-1

Figure Lengend Snippet: Selective coupling of excited states and decrease of triplet–singlet energy gap. a Fluorescence/ P − emission and b phosphorescence spectra of ErB/PVA films inside a cavity with an ErB concentration between 0.01 (black) and 0.54 M (purple), excited at the maximum of the P + absorbance. The clean phosphorescence band was obtained by subtracting the fluorescence tail from the phosphorescence spectra (Supplementary Fig. )

Article Snippet: ErB (Sigma Aldrich) was dissolved in water containing PVA (88% hydrolyzed, Acros Organics, 25–35 mg mL −1 ).

Techniques: Fluorescence, Concentration Assay

Journal: Nature Communications

Article Title: Selective manipulation of electronically excited states through strong light–matter interactions

doi: 10.1038/s41467-018-04736-1

Figure Lengend Snippet: Increased rate of reversed intersystem crossing. a The energy diagram describing the kinetics of the triplet-state depopulation pathways inside a cavity. k P , k NR , and k RISC are the rates of phosphorescence, non-radiative decay, and reverse intersystem crossing, respectively. Δ E TP is the energy difference between T 1 and P − . b The increase of the average total and the fitted rate constant (Eq. ) of the triplet-state depopulation ( k avg T ) inside the cavity as a function of the energy difference between T 1 and P − (Δ E TP ) . The rate constants outside the cavity with equivalent concentration are shown for comparison. c , d Temperature dependence of the average total rate constant of the triplet-state depopulation ( k avg T ) and exponential fit (Eq. ) for 0.02 M ( c ) and 0.54 M ( d ) ErB/PVA films outside and inside a cavity. Samples were excited at the maximum of the P + absorbance peak and monitored at 690 nm

Article Snippet: ErB (Sigma Aldrich) was dissolved in water containing PVA (88% hydrolyzed, Acros Organics, 25–35 mg mL −1 ).

Techniques: Concentration Assay