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首页> 外文期刊>Journal of Applied Polymer Science >Alternative procedure for the incorporation of quantum dots into poly(N-isopropyl acrylamide-co-acrylic acid) microgels based on multiple interactions
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Alternative procedure for the incorporation of quantum dots into poly(N-isopropyl acrylamide-co-acrylic acid) microgels based on multiple interactions

机译：基于多重相互作用将量子点掺入聚（N-异丙基丙烯酰胺-共丙烯酸）微凝胶的替代程序

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Monodisperse fluorescent poly(N-isopropyl acrylamide-co-acrylic acid) microgels doped with quantum dots (QDs) were fabricated as follows. First, cysteamine-capped cadmium telluride (CA-CdTe) QDs were introduced into the microgels at pH 7 by electrostatic interactions. Afterward, the CA-CdTe QDs were further immobilized in the microgels by the collapse of the polymer network when the pH of solution was adjusted to 4. In this system, there existed multiple interactions between the CA-CdTe QDs and the microgels, including hydrogen bonds, electrostatic interactions, and coordination bonds. The photoluminescence intensity and maximum emission wavelength of the resulting microgels could be easily adjusted by changes in the content of the CA-CdTe QDs in the hybrid microgels (HMs) and with differently sized QDs, respectively. We found that the lower the addition of CA-CdTe QDs was, the bigger the blueshift of the photoluminescence spectra of the HMs was and the weaker the photoluminescence intensity was. Finally, temperature-responsive emission of the HMs was examined. (c) 2015 Wiley Periodicals, Inc.
机译：掺杂有量子点（QD）的单分散荧光聚（N-异丙基丙烯酰胺-丙烯酸）微凝胶的制备如下。首先，通过静电相互作用将半胱胺帽的碲化镉（CA-CdTe）QD引入pH为7的微凝胶中。此后，当溶液的pH值调整为4时，由于聚合物网络的崩溃，CA-CdTe QD被进一步固定在微凝胶中。在该系统中，CA-CdTe QD与包括氢在内的微凝胶之间存在多种相互作用。键，静电相互作用和配位键。分别通过混合微凝胶（HMs）和不同尺寸的QD中CA-CdTe QD含量的变化，可以轻松地调节所得微凝胶的光致发光强度和最大发射波长。我们发现，CA-CdTe QD的添加量越低，HMs的光致发光光谱的蓝移越大，光致发光强度越弱。最后，检查了HMs的温度响应发射。 （c）2015年威利期刊有限公司

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