Reexamining the heavy-atom-effect: The universal heavy-atom-induced fluorescence enhancement principle for through-space conjugated AIEgens

Clusterization-Triggered Emission Enhanced by Energy Transfer in the Layered Metal Halide Hybrid Material (TET)2[Pb4Cl16]

“…The intramolecular N···N interactions (such as N 5 ···N 6 = 3.196 Å, and N 2 ···N 1 = 3.724 Å) that occurs between the nitrogen lone pairs within the crystal structure constitute the basis for n ··· n through-space electronic communication network. It is worth noting that TD-DFT simulations revealed that through-space electron delocalization among atoms can still occur even when the distance is greater than the sum of vdW radii, which is most likely due to the shortened distance in the excited states. ,,, Furthermore, it has been reported that halogens promote effective halogen-induced intermolecular interactions, leading to the restriction of molecular motions and molecular vibrations. − The abundant and strong Cl···N intermolecular interaction between Cl and N lone pairs separated by distances shorter than the vdW radii (such as N 5 ···Cl 7 = 3.08 Å and N 3 ···Cl 1 = 3.12 Å; Figure S4 and Table S6) promotes self-assembly, creating a 3D supramolecular network and extends the through-space electronic communication network. It is imperative to consider that hydrogen bonds present in this system will not only stiffen the conformations, but also stabilize and facilitate the communication among organic groups and between organic and inorganic groups by bringing them into close proximity. , The different interactions mentioned above contribute synergistically to promoting the TSC, therefore enhancing CL.…”

Facile Conversion of Water to Functional Molecules and Interfacial Polymers with Efficient Clusteroluminescence

“…The surfaces of the resultant polymeric film were measured via an atomic force microscope (AFM), which also suggested the smooth feature of the water side and the rough character of the DCM side (Supplementary Figs. 47,48). Accordingly, the resultant polymeric film could be regarded as a "Janus film".…”

“…Notably, the isotope effect of traditional luminogens always results in enhanced PLQY but unchanged emission wavelength, [44][45][46][47][48][49] -5d). Therefore, EE-OBBO shows stronger intermolecular TSI than EE-DMODA.…”

A molecular descriptor of a shallow potential energy surface for the ground state to achieve narrowband thermally activated delayed fluorescence emission

“…[6][7][8][9][10] Although the efficiency of TADF molecules has greatly improved, high color purity remains a key issue that needs to be addressed. [11][12][13][14][15][16][17] Organic luminescence molecules typically exhibit strong vibrational relaxation (with rates ranging from 10 12 to 10 15 s À1 ) and strong vibrational coupling between the excited state and ground state; as a result, their emission spectra are relatively broad, and developing narrowband TADF molecules is a longstanding challenge in the field of electroluminescence. [18][19][20][21][22][23][24] Researchers have made great efforts in this field.…”