Controlling AIE and ACQ properties of conjugated carbazole-tetraphenylethene copolymers by ethynylene spacer

Han, Je-Chin; Xu, Ning; Nagai, Yusuke; Doi, Marina; Sawada, Tatsuo; Serizawa, Takashi; Andò, Sebastiano; Habuchi, Satoshi; Michinobu, Tsuyoshi

doi:10.1039/d3py00168g

Polym. Chem.

2023

DOI: 10.1039/d3py00168g

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Controlling AIE and ACQ properties of conjugated carbazole-tetraphenylethene copolymers by ethynylene spacer

Je-Chin Han

Ning Xu

Yusuke Nagai

et al.

Abstract: Aggregation-induced emission (AIE) polymers have been widely investigated by introducing various AIEgens into the polymer chains. In the research program of developing new polymer nanoparticles or polymer dots (Pdots) with...

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Cited by 4 publications

References 56 publications

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Design and Construction of Furan‐Based and Thiophene‐Based Salicyladazine Bisbenzoxazine Resins with High Thermal Stability and Tunable Surface Properties

Kao,

Mohamed,

Chiang

et al. 2024

Macro Chemistry & Physics

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We synthesized two disubstituted bisbenzoxazine monomers using furan (Fa) and thiophene (Th) derivatives: bis((3‐(furan‐2‐ylmethyl)‐7‐ol‐3,4‐dihydro‐2H‐benzo[e][1,3] oxazin‐6‐yl)methylene)hydrazine (BAZ‐Fa‐BZ) and bis((3‐(thiophen‐2‐ylmethyl)‐7‐ol‐3,4‐dihydro‐2H‐benzo[e][1,3] oxazin‐6‐yl)methylene)hydrazine (BAZ‐Th‐BZ). These monomers were synthesized via Mannich condensation of salicylaldazine (BAZ‐4OH) and paraformaldehyde (CH2O) with furfurylamine (Fa‐NH2) and thiophene‐2‐methenamine (Th‐NH2), respectively. The chemical structures of BAZ‐Fa‐BZ and BAZ‐Th‐BZ were affirmed using FT‐IR and NMR; respectively. A thorough investigation of the thermal polymerization process of BAZ‐Fa‐BZ and BAZ‐Th‐BZ was conducted using DSC, TGA, and in situ FT‐IR spectra (ranging from 25 to 250 °C). Poly(BAZ‐Fa‐BZ) exhibited superior thermal properties with a thermal decomposition temperature (Td10) of 402 °C and a char yield of 58 wt.% after thermal treatment at 250 °C, along with a lower surface free energy of 28.9 mJ m−2 compared to poly(BAZ‐Th‐BZ) (Td10 = 359 °C, char yield = 48 wt.%, and surface free energy = 34.1 mJ m−2). Additionally, poly(BAZ‐Th‐BZ/BAZ‐Fa‐BZ) blend with a ratio of 1/3 after thermal curing at 250 °C demonstrated the highest Td10 of 395 °C and a char yield of 60 wt.%. Photoluminescence (PL) measurements conducted in the solid state revealed that BAZ‐Th‐BZ, BAZ‐Fa‐BZ, and their blends emit green light when excited at a wavelength of 365 nm.This article is protected by copyright. All rights reserved

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Design and Construction of Furan‐Based and Thiophene‐Based Salicyladazine Bisbenzoxazine Resins with High Thermal Stability and Tunable Surface Properties

Kao,

Mohamed,

Chiang

et al. 2024

Macro Chemistry & Physics

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Structural design of conjugated polymers for fluorescence bioimaging in the second near‐infrared window

Terayama

Habuchi

Michinobu

2023

Journal of Polymer Science

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Fluorescence imaging in the second near‐infrared (NIR‐II) region has become one of the most powerful tools in clinical diagnosis and therapy assessment because of its high spatial resolution, rapid feedback, radiation safety, and low cost. Conjugated polymer nanoparticles (Pdots) based on donor‐acceptor (D‐A) polymers are some of the most promising fluorescent probes which have many superior characteristics, such as a high fluorescence brightness, good photostability, facile functionalization, and low cytotoxicity. While there has been tremendous progress in developing fluorescent polymers for use in the NIR‐II wavelength range, the types of monomer structures used as building blocks for NIR‐II fluorophores are still limited compared to those for organic solar cells and organic transistors. This review summarizes the NIR‐II fluorescent polymers reported in the past few decades. The donor/acceptor unit structures of the polymers are systematically classified and discussed, which will provide new insights into the logical molecular design of donor/acceptor units for the development of high‐brightness NIR‐II Pdots.

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A Novel AIE-Active Salicylaldehyde-Schiff Base Probe with Carbazole Group for Al3+ Detection in Aqueous Solution

Lv,

Hu,

Tao

2024

J Fluoresc

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Controlling AIE and ACQ properties of conjugated carbazole-tetraphenylethene copolymers by ethynylene spacer

Abstract: Aggregation-induced emission (AIE) polymers have been widely investigated by introducing various AIEgens into the polymer chains. In the research program of developing new polymer nanoparticles or polymer dots (Pdots) with...

Cited by 4 publications

References 56 publications

Design and Construction of Furan‐Based and Thiophene‐Based Salicyladazine Bisbenzoxazine Resins with High Thermal Stability and Tunable Surface Properties

Design and Construction of Furan‐Based and Thiophene‐Based Salicyladazine Bisbenzoxazine Resins with High Thermal Stability and Tunable Surface Properties

Structural design of conjugated polymers for fluorescence bioimaging in the second near‐infrared window

A Novel AIE-Active Salicylaldehyde-Schiff Base Probe with Carbazole Group for Al3+ Detection in Aqueous Solution

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