Charge transfer emission from 1,4,5,8-naphthalimide-polystyrene

Marcos F.R.A. Schimidt; Helena C. Junqueira; Bruno Pedras; Mario N. Berberan-Santos; Eduardo R. Triboni; Fabio H. Florenzano

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Charge transfer emission from 1,4,5,8-naphthalimide-polystyrene

机译：来自1,4,5,8-萘酰亚胺 - 聚苯乙烯的电荷转移排放

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The photoluminescence (PL) of powders consisting of N,N'-(N,N'-dimethylethyleneamine-N"-allyl) - 1,4,5,8-naphthaldiimide (ANDI) and polystyrene (PS) was studied as they are simply ground together and as repetitive units of copolymers. Reflectance absorption spectra showed typical solid-state ANDI CT-band from 430 nm until 600 nm by both the mixture and the copolymers. PL of the copolymers was proposed to be a CT-emission that comes from the electron donor-acceptor styrene-NDI interaction. Under excitation at 365 nm, the copolymers exhibited emission, λ_(max) ～ 500 nm, with intensity inversely proportional to the ANDI amount. The PS-ANDI ground powders displayed an excimer-like emission band at ca. 485 nm, inversely, increasing ANDI amount in the mix, PL increases. XRD analysis showed that the ANDI crystals were dismantled in some extent inside the PS matrix as they were ground together. An easy method was developed to obtain an emitting-solid system that can be useful to generate charge-transfer devices.

机译：由N，N' - （N，N'-二甲基乙基氨基-N-N“ - 1,4,5,8-萘二酰亚胺（ANDI）和聚苯乙烯（PS）组成的光致发光器（PL）组成的粉末组成的光致发光（PL）。简单地研磨并作为重复的共聚物单位。反射吸收光谱通过混合物和共聚物从430nm的典型固态ANDI CT频带显示出典型的固态ANDI CT频带。将共聚物的PL提出是一种CT-发射从电子供体 - 受体苯乙烯-NDI相互作用。在365nm的激发下，共聚物表现出发射，λ_（最大）〜500nm，强度与ANTI金额成反比。PS-ANDI接地粉末显示出准分子在CA的发射带。485nm，反相，增加的混合物中的Andi量，Pl增加。XRD分析显示，在一定程度上，在PS矩阵的一定程度上被拆除。开发了一种简单的方法来获得发射 - 固体系统可以有用的是生成charg电子传输设备。

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来源
《Materials Science and Engineering》 |2021年第4期|115053.1-115053.8|共8页
作者
Marcos F.R.A. Schimidt; Helena C. Junqueira; Bruno Pedras; Mario N. Berberan-Santos; Eduardo R. Triboni; Fabio H. Florenzano;
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作者单位

Laboratory of Nanotechnology and Engineering of Processes (NEP) - EEL - University of Sao Paulo Lorena-SP 12602-810 Brazil Departamento de Engenharia de Materials - EEL - University of Sao Paulo Brazil;

Departamento de Bioquimica Instituto de Quimica-Universidade de Sao Paulo Brazil;

iBB-Instixute for Bioengineering and Biosciences Instituto Superior Tecnico Universidade de Lisboa 1049-001 Lisboa Portugal;

iBB-Instixute for Bioengineering and Biosciences Instituto Superior Tecnico Universidade de Lisboa 1049-001 Lisboa Portugal;

Laboratory of Nanotechnology and Engineering of Processes (NEP) - EEL - University of Sao Paulo Lorena-SP 12602-810 Brazil;

Departamento de Engenharia de Materials - EEL - University of Sao Paulo Brazil;

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正文语种 eng
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关键词
1,4,5,8-Naphthalimide; Polystyrene; Charge-transfer; Solid-state emission; Grinding;

机译：1,4,5,8-萘酰亚胺;聚苯乙烯;电荷转移;固态排放;研磨;

Charge transfer emission from 1,4,5,8-naphthalimide-polystyrene

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