Synthesis of Di-Block Copolymers Poly (Propylene oxide)-block-Poly (9-(2,3-epoxypropyl) Carbazole) via Sequential Addition of Monomers in One Pot

Izzo, Lorella; Lisa, Paola; Sacco, Olga; Pragliola, Stefania

doi:10.3390/polym13050763

Cited by 2 publications

(3 citation statements)

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“…The film emission spectra of run 1 and 3 are shown in Figure 8. All of the samples present high energy bands at 351 and 366 nm (Λ ecc = 300 nm) due to the carbazole emission [28][29][30]33,34,40,41]. As expected, due to the absence of two close carbazole-containing units in the copolymer chains, no excimer emission has been detected.…”

Section: Fluorescence Study Of P(e-co-pk)/pe and P(s-co-sk)/ps Polyme...supporting

confidence: 65%

Polyethylenes and Polystyrenes with Carbazole Fluorescent Tags

et al. 2023

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The increasingly intense consumption of plastics and, above all, their improper disposal in the environment are causing serious environmental concerns. Great efforts have been made for the development of new methods aimed at facilitating and speeding up the identification and sorting of different materials in the plastic recycling process. In this field, new strategies based on fluorescent tagging have been developed. This work concerns the synthesis and characterization of new fluorescent copolymers of polyethylene (PE) and polystyrene (PS), which are among the most produced and consumed plastic materials. The synthesized copolymers are potentially suitable for use as fluorescent markers of PE and PS. Ethylene-co-N-pentenyl carbazole (P(E-co-PK)) and styrene-co-4-(N-carbazolyl)methyl styrene (P(S-co-SK)) copolymers were prepared by Ziegler–Natta and free radical polymerization, respectively. If excited at 300 nm, both P(E-co-PK)s and P(S-co-SK)s give fluorescence emissions resulting in them being optically active. Moreover, due to the low amount of fluorescent units, they show chemico-physical properties such as those of their corresponding homopolymers (PE and PS). P(E-co-PK)s and P(S-co-SK)s have been also tested as fluorescent markers of PE and PS. The experimental results demonstrate that from PE/P(E-co-PK) and PS/P(S-co-SK) blends prepared using only 1% by weight of fluorescent copolymer, distinguishable fluorescent emissions can be still detected.

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Section: Fluorescence Study Of P(e-co-pk)/pe and P(s-co-sk)/ps Polyme...supporting

confidence: 65%

Polyethylenes and Polystyrenes with Carbazole Fluorescent Tags

et al. 2023

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“…18,19 Our recent studies reported the synthesis of several higher homologues of polyvinylcarbazole (PVK) with high stereoregularity degrees using Ziegler-Natta (Z-N) homogeneous catalysts. [20][21][22][23][24][25][26][27] Their optical properties were also deeply investigated. [20][21][22][23][24][25][26][27] In particular, isotactic poly(N-pentenyl-carbazole) (i-PPK) with a high isotacticity degree was obtained by polymerization of the N-pentenyl-carbazole monomer in the presence of the well-known isospecific homogeneous catalytic system rac-dimethylsilylbis(1-indenyl)zirconium dichloride/ methylaluminoxane (MAO).…”

Section: Introductionmentioning

confidence: 99%

“…[20][21][22][23][24][25][26][27] Their optical properties were also deeply investigated. [20][21][22][23][24][25][26][27] In particular, isotactic poly(N-pentenyl-carbazole) (i-PPK) with a high isotacticity degree was obtained by polymerization of the N-pentenyl-carbazole monomer in the presence of the well-known isospecific homogeneous catalytic system rac-dimethylsilylbis(1-indenyl)zirconium dichloride/ methylaluminoxane (MAO). 20,21,26 Moreover, i-PPK showed very intriguing optical features.…”

Section: Introductionmentioning

confidence: 99%