Carbon dots (CDs) usually emit a strong blue light and excitation wavelength dependent long wavelength lights. This significantly limits their applications because one has to use a series of different excitation light sources to get different colors and the long wavelength emissions are usually very weak. We found that one type of CDs synthesized from p-phenylenediamine could emit various long wavelength lights (green to red) independent of the excitation wavelength when dispersed in different solvents. The photoluminescence quantum yields of the same CDs were 10–35% in different solvents for different color emissions. Based on this solvent-color effect, we further mixed the same CDs with different polymers to form solid CD films for various color emissions, and these film emissions were also excitation wavelength independent. Multicolor LEDs were demonstrated with the same CDs in solution and solid film states for color displays.

Highlights d Epr1 is a soluble ER-phagy receptor critical for ER stressinduced ER-phagy d The main role of Epr1 is to bridge the association between Atg8 and VAPs d VAP-mediated ER-plasma membrane contact is important for ER stress-induced ER-phagy d UPR regulator Ire1 contributes to ER stress-induced ERphagy by upregulating Epr1

Two pairs of thermally activated delayed fluorescence (TADF)active chiral luminogens (R/S-1 and R/S-2) can be achieved by introducing D− A-type groups to chiral BINOL skeletons. The resulting chiral luminogens can exhibit aggregation-induced emission properties in THF−water mixtures and TADF emission in a doped-film state. The absolute photoluminescence quantum yield (Φ PL ) and delayed fluorescence lifetimes (τ delayed ) were measured to be 18.5% and 1.03 μs for R-1 and 15.7% and 0.97 μs for R-2. However, only R/S-1 with the fixed conjugation structure can emit circularly polarized luminescence signals, and g lum can reach 1.6 × 10 −3 in toluene solution and 9.2 × 10 −4 in the neat film. Most importantly, R/S-1 was chosen as the emitting layers for orangered circularly polarized organic light-emitting diodes, which can display low turnon voltage (V on ) of 3.4 V, high maximum brightness (L max ) up to 40 470 cd m −2 , moderate external quantum efficiency of 4.1%, as well as circularly polarized electroluminescence signal with g EL = −0.9 × 10 −3 /+1.0 × 10 −3 .

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