Construction of emission-tunable nanoparticles based on a TICT-AIEgen: impact of aggregation-induced emission versus twisted intramolecular charge transfer†,Journal of Materials Chemistry B

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Construction of emission-tunable nanoparticles based on a TICT-AIEgen: impact of aggregation-induced emission versus twisted intramolecular charge transfer†
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2018-04-03 00:00:00 , DOI: 10.1039/c8tb00539g
Ying-Chen Chiang _{1,

2,

3,

4} , Zi-Lun Lai _{3,

4,

5} , Chih-Ming Chen _{1,

2,

3,

4} , Cheng-Chung Chang _{3,

4,

5} , Bin Liu _{6,

7,

8,

9}

Affiliation

Traditional fluorogens with aggregation-induced emission (AIEgens) generally exhibit strong luminescence with monotonous wavelengths in the aggregated state, whereas apparent solvatochromic emission intensities and wavelengths (shift) are observed in molecules with twisted intramolecular charge transfer (TICT) characteristic molecules. Herein, we develop a platform to construct strong luminescent nanoparticles with tunable emission colors based on a TICT-AIEgen, 3,6-divinylaryl-substituted carbazole (C12P). Also based on the same molecule, through different nanoparticle fabrication approaches, fluorescent nanoparticles with different emission colors were obtained. A detailed analysis reveals that AIE and TICT characteristics play different roles in nanoparticle emission, with AIE primarily controlling the emission intensity while TICT is more involved in manipulating the emission wavelengths. Applications of the as-prepared nanoparticles in cell imaging were preliminarily demonstrated.

中文翻译：

基于TICT-AIEgen的发射可调纳米粒子的构建：聚集诱导发射与扭曲分子内电荷转移的影响†

具有聚集诱导发射的传统氟原子（AIEgens）通常在聚集状态下显示出具有单调波长的强发光，而在具有扭曲的分子内电荷转移（TICT）特征分子的分子中观察到明显的溶剂变色发射强度和波长（位移）。在本文中，我们开发了一个平台，可基于TICT-AIEgen，3,6-二乙烯基芳基取代的咔唑（C12P）构建具有可调发射颜色的强发光纳米粒子。同样基于相同的分子，通过不同的纳米颗粒制造方法，获得了具有不同发射颜色的荧光纳米颗粒。详尽的分析表明，AIE和TICT特性在纳米粒子发射中起着不同的作用，AIE主要控制发射强度，而TICT则更多地参与操纵发射波长。初步证明了所制备的纳米颗粒在细胞成像中的应用。

更新日期：2018-04-03

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