One‐Step Multicomponent Polymerizations for the Synthesis of Multifunctional AIE Polymers

Abstract

As a new class of functional luminescent materials, polymers with aggregation‐induced emission (AIE) feature attract much attention because of their advantages of efficient solid‐state fluorescence, excellent processability, structural diversity, and multifunctionalities. Among all polymerization methods toward AIE polymers, multicomponent polymerizations (MCPs) exhibit the merits of simple operation, good atom economy, high polymerization efficiency, broad functional‐group tolerance, etc. In this feature article, the recent progress on the development of one‐step MCPs for the synthesis of AIE polymers is highlighted. The representative functionalities of the resulting AIE polymers are illustrated. Perspectives on the challenges and future development directions of this field are also discussed.

A triphenylamine-based aggregation-enhanced emission probe for viscosity and polarity analysis of lubricating oils

“…It is well known that the uorescent molecules with AEE properties are sensitive to the viscosity of solvents, mainly due to the restriction of intramolecular motion. 34,35 Here, to verify the viscosity responsiveness of CPA-TPA to lubricant oils, we rst prepared a series of liquid mixtures using nonpolar CYH and PAO base oils and characterized the PLE and PL spectra of CPA-TPA in these mixtures. CYH was chosen mainly considering its very low viscosity (1.26 mm 2 s À1 , 20 C) which could provide a wide viscosity range when mixed with PAO base oils.…”

“…This is mainly due to the formation of the through-space conjugation of CPA-TPA in the crystal state by dense packing. 35 In addition, due to the twisted conformation of CPA-TPA in the crystal, the emission of CPA-TPA is red-shied. 26,36 Based on the above results, we further studied the probe solution A and B in analyzing the viscosity of lubricating oils.…”

In Situ Generation of Heterocyclic Polymers by Triple‐Bond Based Polymerizations

“…Homopolymerizations can produce polymers from a single monomer, which fundamentally avoids the tedious design and synthesis of other co-monomers and circumvents the issue of strict control on monomer stoichiometric balance. [21] Attracted by these advantages, Tang et al have reported a metal-free polymerization of dinitriles for the in-situ generation of six-membered heterocyclic polymers. [16] Catalyzed by trifluoromethanesulfonic acid in 1,2-dichlorobenzene (o-DCB), the polycyclotrimerizations of aromatic dinitriles proceeded efficiently at room temperature (Scheme 1A).…”

“…The electron clouds are overlapped in these areas producing "invisible" through-space electronic conjugations. [21] Emission of nonconjugated polymers triggered by this effect are called clusteroluminescence, which are more b) and P14(1a-c/2a/3a). B) PL spectra of P13(1a/2a/3a) in THF and THF/water mixtures with different water fractions (f w ).…”

Multicomponent Spiropolymerization of Diisocyanides, Diethyl Acetylenedicarboxylate, and Halogenated Quinones

“…Multicomponent polymerization (MCP) has attracted the attention of scientists for the development of new polymers. [19][20][21][22][23][24][25][26] Triple-bond compounds, such as alkynes [27][28][29][30][31][32][33][34] and isonitriles, [35][36][37] are widely used in MCPs with various chemical structures. For example, Arndtsen's group synthesized a series of pyrrole-containing -conjugated polymers by MCP of diimines, diacid chlorides, and alkynes.…”