Fig. 2: Chiral-selective room-temperature phosphorescence enhancement (CPE) for phenylalanine derivatives.
From: Rapid room-temperature phosphorescence chiral recognition of natural amino acids
a Chemical structure of four chiral phenylalanine-modified compounds for constructing doped RTP systems. b Steady-state photoluminescence (PL) spectra of the host matrix and the doped samples at 298 K (λex = 298 nm). c Delayed emission (DE, ∆t = 5 ms) spectra of the host matrix and the doped samples at 298 K (λex = 247 nm). d Time-resolved RTP emission for the two doped samples. (λex = 280 nm from the spectraLED-280 and λem = 526 nm) e Photographs of combinations of the doped samples during and immediately after 254-nm light irradiation at 298 K. (The guest-to-host ratio is 0.1% for all samples in the solid state).
