Optically Anisotropic Films of Colloidal Nanocrystals/Photoluminescent Dye Doped Polymers

Z. Dikmen
{"title":"Optically Anisotropic Films of Colloidal Nanocrystals/Photoluminescent Dye Doped Polymers","authors":"Z. Dikmen","doi":"10.18466/cbayarfbe.1394435","DOIUrl":null,"url":null,"abstract":"Semiconductor colloidal nanocrystals are attractive materials since they can be adapted to polymers to form hybrid materials and are compatible with many optical applications. Here, synthesis of CdSe/CdS nanorods (NRs) via hot injection method is carried out, followed by preparation of hybrid polymer films from polyethylene glycol monomethyl ether-block-poly(glycidyl methacrylate)-block-poly[2-(diethylamino)ethyl methacrylate] triblock copolymer (MPEG-b-PGMA-b-DEAEMA) at a liquid-air interface. The optical properties of the films are finely adjusted to form optically anisotropic (i.e. dual-color emissive) films by using dyes for the other emitter as desired. Thiazolo[5,4-d] thiazole (TTz)-based dye and 6-carboxy fluorescein were used for this purpose. Tunable emission of TTz dye from blue to green dependent on changing pH value resulted in blue-green emissive polymer films, while red emission of CdSe/CdS NRs caused red emissive films. Phase separation of these materials is achieved by the hexane-insoluble nature of MPEG-b-PGMA-b-DEAEMA and the high solubility of NRs in it. These dual emissive films are promising candidates for waveguides and optical sensors.","PeriodicalId":9653,"journal":{"name":"Celal Bayar Üniversitesi Fen Bilimleri Dergisi","volume":"162 2","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Celal Bayar Üniversitesi Fen Bilimleri Dergisi","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18466/cbayarfbe.1394435","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Semiconductor colloidal nanocrystals are attractive materials since they can be adapted to polymers to form hybrid materials and are compatible with many optical applications. Here, synthesis of CdSe/CdS nanorods (NRs) via hot injection method is carried out, followed by preparation of hybrid polymer films from polyethylene glycol monomethyl ether-block-poly(glycidyl methacrylate)-block-poly[2-(diethylamino)ethyl methacrylate] triblock copolymer (MPEG-b-PGMA-b-DEAEMA) at a liquid-air interface. The optical properties of the films are finely adjusted to form optically anisotropic (i.e. dual-color emissive) films by using dyes for the other emitter as desired. Thiazolo[5,4-d] thiazole (TTz)-based dye and 6-carboxy fluorescein were used for this purpose. Tunable emission of TTz dye from blue to green dependent on changing pH value resulted in blue-green emissive polymer films, while red emission of CdSe/CdS NRs caused red emissive films. Phase separation of these materials is achieved by the hexane-insoluble nature of MPEG-b-PGMA-b-DEAEMA and the high solubility of NRs in it. These dual emissive films are promising candidates for waveguides and optical sensors.
各向异性胶体纳米晶体/掺杂染料的光致发光聚合物薄膜
半导体胶体纳米晶体是一种极具吸引力的材料,因为它们可以与聚合物结合形成杂化材料,并且与许多光学应用兼容。本文通过热注入法合成了镉硒/镉硒纳米棒(NRs),然后在液气界面上用聚乙二醇单甲醚-嵌段-聚(甲基丙烯酸缩水甘油酯)-嵌段-聚[2-(二乙胺基)甲基丙烯酸乙酯]三嵌段共聚物(MPEG-b-PGMA-b-DEAEMA)制备了杂化聚合物薄膜。通过对薄膜的光学特性进行微调,可形成光学各向异性(即双色发射)薄膜,方法是根据需要为另一种发射体使用染料。噻唑并[5,4-d]噻唑(TTz)染料和 6-羧基荧光素被用于此目的。根据 pH 值的变化,TTz 染料从蓝色到绿色的可调发射产生了蓝绿色发射聚合物薄膜,而 CdSe/CdS NRs 的红色发射则产生了红色发射薄膜。MPEG-b-PGMA-b-DEAEMA 的正己烷不溶性和 NRs 在其中的高溶解性实现了这些材料的相分离。这些双发射薄膜有望用于波导和光学传感器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信