Fig. 1: Chiral dual-annihilator model for controllable photon upconversion and multi-dimensional optical modulation. | Nature Communications

Fig. 1: Chiral dual-annihilator model for controllable photon upconversion and multi-dimensional optical modulation.

From: Chiral dual-annihilator model for controllable photon upconversion and multi-dimensional optical modulation

Fig. 1

The energy level and energy transfer roadmap of the sensitizer and annihilator in the dual-annihilator model. The energy-mismatched annihilator (DPA) implements the triplet-triplet annihilation photon upconversion (TTA-UC) process by means of thermally-activated triplet-triplet energy transfer (TA-TTET). The dual-annihilator model was introduced into the chiral nematic liquid crystals (CLCs) microenvironment. The triple-state energy competition between DPA and BDP realizes the coordinated adjustment of the color of upconverted circularly polarized luminescence (UCCPL). The color of UCCPL and downshifting circularly polarized luminescence (DSCPL) can be clearly distinguished upon excitation of 639 and 365 nm light, respectively.

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