Perspectives on push–pull chromophores derived from click-type [2 + 2] cycloaddition–retroelectrocyclization reactions of electron-rich alkynes and electron-deficient alkenes

• Michio Yamada

Beilstein J. Org. Chem. 2024, 20, 125–154, doi:10.3762/bjoc.20.13

• emission increases when they are excited at 420 nm, resulting in white-light emission. The underlying mechanism governing these luminescence properties remains unknown. It has been established that 75 does not exhibit luminescence in its solid-state form, which is attributed to the quenching effects

Post-synthesis from Lewis acid–base interaction: an alternative way to generate light and harvest triplet excitons

• Hengjia Liu and
• Guohua Xie

Beilstein J. Org. Chem. 2022, 18, 825–836, doi:10.3762/bjoc.18.83

• very small amount of trifluoroacetic acid (TFA). As shown in Figure 6c, the PL spectra in solution were dominated by the amount of TFA. At the appropriate ratio, the solution-processed device with compound 7 as single emission layer generated broadband white light emission under EL process (see Figure

• , accompanied with a decrease of the original blue emission, as shown in Figure 7. The PL emission changed from blue to orange. This phenomenon was also reproducible by adding other Lewis acids, such as BCl3 and AlCl3. Interestingly, white light emission was achievable by adjusting the ratio of B(C6F5)3

Energy down converting organic fluorophore functionalized mesoporous silica hybrids for monolith-coated light emitting diodes

• Markus Börgardts and
• Thomas J. J. Müller

Beilstein J. Org. Chem. 2017, 13, 768–778, doi:10.3762/bjoc.13.76

• ; postsynthetic grafting; white light emission; Introduction The development of new efficient illumination materials has received increasing attention in the past years [1][2][3]. For the generation of white light the combination of a UV emitting light source and energy down converting phosphor emitting in the

• molecules with inorganic silica hosts [11][20]. Therefore, a terminal triethoxysilyl group has to be coupled to luminescent dyes with blue, green, and red emission characteristics for generating hybrid materials with white light emission based upon additive color mixing. A rapid and versatile

• purification by column chromatography on silica gel [22][23]. The diminished yields are a consequence of the reaction of the terminal triethoxysilyl groups with the free silanol groups of the silica gel taking place already at room temperature. For generating white light emission with good color rendering