Room-temperature Barbier single-atom polymerization induced emission as a versatile approach for the utilization of monofunctional carboxylic acid resources

Abstract

Carboxylic acids are widely available from both biomass and fossil sources on the earth. In comparison with multifunctional carboxylic acid containing chemicals those have been comprehensively used as building block...

Novel NBN-Embedded Polymers and Their Application as Fluorescent Probes in Fe3+ and Cr3+ Detection

“…Density functional theory (DFT) calculations were performed to investigate the emission mechanism of the polymer, by comparing the monomers (N = 1) and polymers (N = 4). As shown in Figure 4 , all polymers show a lower band gap, resulting in the electron transition and luminescence as previously reported [ 44 , 45 , 46 , 47 ]. As shown in Figures S6–S8 and Table S1 (see Supplementary Materials) , the band gap decreases with the N increasing for all polymers.…”

Barbier single-atom polymerization induced emission as a one-pot approach towards stimuli-responsive luminescent polymers

“…These results indicate that the nonconjugated luminescence of these Barbier SAP polymers is attributed to the through-space conjugation effect between the N,N -dimethylaminotriphenylmethanol moieties and the intramolecular charge transfer caused by polymer chain entanglement, which is similar to previous reports on PIE and nonconjugated emission. 38,40,47,50–56 Upon comparing the calculation results of the HOMO, the LUMO and the band gap of polymer with and without the N , N -dimethyl moiety, the polymer with the N,N -dimethyl moiety has the higher HOMO and LUMO and the narrower band gap at the same degree of polymerization, resulting in the red-shifted nonconjugated emission (Fig. S22–24†), which will be discussed further.…”

“…, Barbier polymerization, resulting in a series of phenylalcohol and aniline containing polymers with different substituents by using AB, A 2 + B 2 , AB 2 and A 2 + B type monomers. 37–42 It is worth mentioning that the A 2 + B type Barbier polymerization exhibits interesting characteristics of single atom polymerization (SAP), where the monofunctional ester monomer contributes only one carbon to the polymer main chain. 39,40 Similar to other C1 polymerizations of ylide, diazoacetate or isocyanide monomers, Barbier SAP also enables the gradual construction of the polymer main chain through the contribution of one carbon atom from one monomer.…”

“…37–42 It is worth mentioning that the A 2 + B type Barbier polymerization exhibits interesting characteristics of single atom polymerization (SAP), where the monofunctional ester monomer contributes only one carbon to the polymer main chain. 39,40 Similar to other C1 polymerizations of ylide, diazoacetate or isocyanide monomers, Barbier SAP also enables the gradual construction of the polymer main chain through the contribution of one carbon atom from one monomer. 43–45 Interestingly, these phenylalcohol containing polymers exhibit nonconjugated luminescence via the polymerization induced emission (PIE) strategy, which can be tuned from the aggregation caused quenching (ACQ) type to the aggregation induced emission (AIE) type.…”

“…43–45 Interestingly, these phenylalcohol containing polymers exhibit nonconjugated luminescence via the polymerization induced emission (PIE) strategy, which can be tuned from the aggregation caused quenching (ACQ) type to the aggregation induced emission (AIE) type. 37–40 Different from the traditional luminescent polymer preparation strategies through the system extension approach that requires multiple steps and relatively high synthetic skills, the PIE strategy represents an advanced one-pot and easy handling approach for the molecular design of luminescent polymers from nonemissive monomers, especially exhibiting nonconjugated luminescence. 37–40,46,47 The incorporation of stimuli-responsive properties via Barbier PIE will expand the methodology and structure libraries of stimuli-responsive luminescent polymers and is therefore highly desirable.…”