Employing Lactam Copolymerization Strategy to Effectively Achieve Pure Organic Room‐Temperature Phosphorescence in Amorphous State

Abstract

Adv. Optical Mater. 2019, 7, 1901277 The authors regret that some of the spectral data in their manuscript were not correct as published with a minor problem. This correction provides an explanation of the origin of this problem along with the changes that have been made. The authors confirm that these minor changes do not affect the conclusions of the communication. By repeating the polymerization and measurement of PNVCL-BrHexene with newly-acquired and original reagent, we found that the original RTP emission peak of PNVCL-BrHexene at 568 nm was due to the impurity from the glassware used for polymerization while the newly-polymerized PNVCL-BrHexene exhibits only one emission peak at 479 nm with the emission maximum changing with the excitation wavelength just like PVP-BrHexene, which was considered as a minor peak of the previously reported PNVCL-BrHexene. We believe that this impurity was BrNpA monomer since the excitation, emission and absorption spectra (including fine structures) of PNVCL-BrNpA are similar to those of PNVCL-BrHexene reported previously. The fact that PNVCL, PNVCL-BrHexene and PNVCL-BA polymerized previously coincidentally contained this impurity (while other polymers did not) made us believe that the emission peaks at ca. 560 nm of these polymers originate from PNVCL units themselves. As the most important figure, Figure 2 has been corrected. The spectra of PNVCL-BrHexene and PNVCL-BA has been changed while those of PNVCL-BrNpA remains unchanged. Figure C1 in this correction corresponds to Figure 2 in the original communication. Table C1, which corresponds to Table 1 in the original communication, is also corrected for the photophysical data of PNVCL-BA, PNVCL-BrHexene and PNVCL. Please note that the data of PNVCL-BA is almost unchanged (except for the disappearance of the minor peak at ca. 560 nm which does not affect the excitation and emission peaks) and that the change of excitation wavelength is merely because the change of the relative intensity of the two excitation peaks. The colors described in the original communication are corrected. Scheme C1, corresponding to Scheme 1 in the original communication, is corrected for the color of PNVCL units. The corrected CIE coordinates of PNVCL-BA and PNVCL-BrHexene is (0.1591, 0.0790) and (0.1771, 0.2016), correspondingly. Figure C2 and Figure C3 correct the absorbance and excitation spectra for Figure S11 and Figure S13 in the original Supporting Information (SI), correspondingly. Although the X-ray powder diffraction (XRPD) and the GPC do not need to be corrected since it has nothing to do with the trace impurities, we remeasured these data for the new polymers. See Figure C4 and Table C2. Other subordinate figures, including Figures S15, S17, S18 and S19 in the original SI, are updated as following Figures S15, S17, S18 and S19.