کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1521766 1511814 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel synthesis of covalently linked silicon quantum dot–polystyrene hybrid materials: Silicon quantum dot–polystyrene polymers of tunable refractive index
ترجمه فارسی عنوان
سنتز رمان از مواد ترکیبی پلی کربنات کوانتومی مرتبط با پلی استایرن: سیلیکون کوانتومی پلیمرهای پلی اتیلن پلی استایرن از شاخص شکستگی قابل تنظیم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی


• A new material design concept, Si QD polymer, is presented.
• Freestanding vinyl-functionalized Si QD was synthesized as a monomer for polymer.
• Si QD–PS polymers were synthesized by polymerization of styrene with vinyl-Si QD.
• Concentration of Si QD in the polymer was well controlled by amount of Si QD used.
• Refractive index of polymer thin films linearly increased with concentration of Si QD.

We present a new material design concept, silicon quantum dot (Si QD) polymers, for which surface-functionalized Si QDs can be regarded as a large monomer in the polymers. As a prototypical example, vinyl-functionalized Si QDs, i.e., divinylbenzene-capped Si QDs (DVB-Si QDs) synthesized by adopting divinylbenzene (DVB) capping molecule to the hydride-terminated Si QD (H-Si QD) via Pt-catalyzed hydrosilylation was introduced and polymerized with a styrene monomer to yield Si QD–polystyrene (Si QD–PS) polymers. To demonstrate controllability of the content of Si QDs in the polymers as in conventional polymers, three Si QD content varied Si QD–PS polymers were systematically prepared, named as Si QD–PS-A, Si QD–PS-B, and Si QD–PS-C. It has been demonstrated that the content of the Si QDs in the Si QD–PS polymers was well controlled by the amount of the DVB-Si QD used, as found to be 3.8 wt% (Si QD–PS-A), 10.0 wt% (Si QD–PS-B), 20.0 wt% (Si QD–PS-A), and 37.4 wt% (DVB-Si QD), which was deduced from TGA results. Thin films of the Si QD–PS polymers and the freestanding DVB-Si QDs were successfully fabricated by a spin-coating method and it was found that the refractive index of the thin films dried at 40 °C was linearly increased as the content of the Si QD in the polymers was increased from 1.586 (0 wt%), to 1.590 (3.8 wt%), to 1.592 (10.0 wt%), to 1.592 (20.0 wt%), and to 1.614 (37.4 wt%).

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 148, Issues 1–2, 14 November 2014, Pages 463–472
نویسندگان
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