文献类型：期刊文献

中文题名：Preparation of photoluminescent carbon dots-embedded polyelectrolyte microcapsules

英文题名：Preparation of photoluminescent carbon dots-embedded polyelectrolyte microcapsules

作者：Xiaoling Yang[1];Liming Peng[1];Jie Zong[1];Yihua Zhu[1]

机构：[1]Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology

年份：2013

卷号：11

期号：3

起止页码：334

中文期刊名：Particuology

外文期刊名：颗粒学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2013_2014】；

基金：the National Natural Science Foundation of China (20925621,20976054,and 21176083);the Special Projects for Nanotechnology of Shanghai(11nm0500800);the Fundamental Research Funds for the Central Universities;the Program for Changjiang Scholars and Innovative Research Team in University(IRT0825);the Shanghai Leading Academic Discipline Project(Project Number:B502),for financial supports

语种：英文

中文关键词：Carbon-dots Layer-by-layer Polyelectrolyte Microcapsules Photoluminescence

外文关键词：Carbon-dots Layer-by-layer Polyelectrolyte Microcapsules Photoluminescence

摘要：Two types of photoluminescent carbon dots （CDs）-embedded polyelectrolyte （PE） microcapsules were successfully prepared via the layer-by-layer （LbL） assembly approach on sacrificial templates. For the first type, the PE microcapsules with CDs embedded in the cavity were produced from assembly of five pairs of poly（sodium 4-styrensulfonate） （PSS） and poly（allylamine hydrochloride） （PAH） on CDs-pre-loaded meso-porous silica. For the second type, the PE microcapsules with CDs embedded in the wall were made of CDs and PAH, which were derived from SiO2 particles as templates. Microscope images confirmed the introduction of CDs into the two CDs-embedded microcapsules. These two microcapsules also retained the optical properties of free CDs. Photoluminescence spectra revealed that the two types of microcapsules had excitation-dependent photoluminescence behavior. When the excitation wavelength changed from 280 to 340nm, photoluminescence emission peak of the PE microcapsules with CDs embedded in the cavity shifts from 369 to 377 nm, while for microcapsules with CDs embedded in the wall, emission peak shifts from 367 to 390 nm. Due to low toxicity, good hydrophilicity and photoluminescence properties of CDs, these two kinds of photo-luminescent microcapsules have competitive potential for application in carriers for imaging, drug delivery and biosensors.
Two types of photoluminescent carbon dots （CDs）-embedded polyelectrolyte （PE） microcapsules were successfully prepared via the layer-by-layer （LbL） assembly approach on sacrificial templates. For the first type, the PE microcapsules with CDs embedded in the cavity were produced from assembly of five pairs of poly（sodium 4-styrensulfonate） （PSS） and poly（allylamine hydrochloride） （PAH） on CDs-pre-loaded meso-porous silica. For the second type, the PE microcapsules with CDs embedded in the wall were made of CDs and PAH, which were derived from SiO2 particles as templates. Microscope images confirmed the introduction of CDs into the two CDs-embedded microcapsules. These two microcapsules also retained the optical properties of free CDs. Photoluminescence spectra revealed that the two types of microcapsules had excitation-dependent photoluminescence behavior. When the excitation wavelength changed from 280 to 340nm, photoluminescence emission peak of the PE microcapsules with CDs embedded in the cavity shifts from 369 to 377 nm, while for microcapsules with CDs embedded in the wall, emission peak shifts from 367 to 390 nm. Due to low toxicity, good hydrophilicity and photoluminescence properties of CDs, these two kinds of photo-luminescent microcapsules have competitive potential for application in carriers for imaging, drug delivery and biosensors.