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Title: Chemical Synthesis and Optical Properties of CdS Poly(Lactic Acid) Nanocomposites and Their Transparent Fluorescent Films

Abstract

This paper describes the chemical synthesis of cadmium sulfide (CdS) polymer nanocomposites by covalently grafting poly(lactic acid) (PLA) onto the surfaces of CdS nanocrystals (NCs). Synthesis of the nanocomposites involved two steps. Lactic acid (LA) capped CdS NCs were first prepared by reacting cadmium chloride (CdCl2) with sodium sulfide (Na2S) using LA as the organic ligand in H2O/N,N-dimethylformamide (DMF) solution. Next CdS PLA nanocomposites were formed by in situ ring-opening polymerization of lactide on the surface of modified CdS NCs. Transparent fluorescent films were then successfully prepared by blending as-prepared CdS PLA nanocomposites with high-molecular-weight PLA. The as-prepared CdS NCs and their nanocomposites were studied by transmission electron microscopic imaging, thermogravimetric analyses, and spectroscopic measurements (ultraviolet-visible absorption and photoluminescence). The spectroscopic studies revealed that the CdS polymer nanocomposites exhibited good optical properties in terms of their photoluminescence and transparency.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1]
  1. Nanjing University of Technology
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1003753
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Colloid and Polymer Science
Additional Journal Information:
Journal Volume: 289; Journal Issue: 4; Journal ID: ISSN 0303-402X
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; CADMIUM CHLORIDES; CADMIUM SULFIDES; ELECTRONS; LACTIC ACID; OPTICAL PROPERTIES; PHOTOLUMINESCENCE; POLYMERIZATION; POLYMERS; SODIUM SULFIDES; SYNTHESIS

Citation Formats

Wang, Cai-Feng, Cheng, Yu-Peng, Xie, He-Yi, Chen, Li, Hu, Michael Z., and Chen, Su. Chemical Synthesis and Optical Properties of CdS Poly(Lactic Acid) Nanocomposites and Their Transparent Fluorescent Films. United States: N. p., 2011. Web. doi:10.1007/s00396-011-2377-0.
Wang, Cai-Feng, Cheng, Yu-Peng, Xie, He-Yi, Chen, Li, Hu, Michael Z., & Chen, Su. Chemical Synthesis and Optical Properties of CdS Poly(Lactic Acid) Nanocomposites and Their Transparent Fluorescent Films. United States. doi:10.1007/s00396-011-2377-0.
Wang, Cai-Feng, Cheng, Yu-Peng, Xie, He-Yi, Chen, Li, Hu, Michael Z., and Chen, Su. Sat . "Chemical Synthesis and Optical Properties of CdS Poly(Lactic Acid) Nanocomposites and Their Transparent Fluorescent Films". United States. doi:10.1007/s00396-011-2377-0.
@article{osti_1003753,
title = {Chemical Synthesis and Optical Properties of CdS Poly(Lactic Acid) Nanocomposites and Their Transparent Fluorescent Films},
author = {Wang, Cai-Feng and Cheng, Yu-Peng and Xie, He-Yi and Chen, Li and Hu, Michael Z. and Chen, Su},
abstractNote = {This paper describes the chemical synthesis of cadmium sulfide (CdS) polymer nanocomposites by covalently grafting poly(lactic acid) (PLA) onto the surfaces of CdS nanocrystals (NCs). Synthesis of the nanocomposites involved two steps. Lactic acid (LA) capped CdS NCs were first prepared by reacting cadmium chloride (CdCl2) with sodium sulfide (Na2S) using LA as the organic ligand in H2O/N,N-dimethylformamide (DMF) solution. Next CdS PLA nanocomposites were formed by in situ ring-opening polymerization of lactide on the surface of modified CdS NCs. Transparent fluorescent films were then successfully prepared by blending as-prepared CdS PLA nanocomposites with high-molecular-weight PLA. The as-prepared CdS NCs and their nanocomposites were studied by transmission electron microscopic imaging, thermogravimetric analyses, and spectroscopic measurements (ultraviolet-visible absorption and photoluminescence). The spectroscopic studies revealed that the CdS polymer nanocomposites exhibited good optical properties in terms of their photoluminescence and transparency.},
doi = {10.1007/s00396-011-2377-0},
journal = {Colloid and Polymer Science},
issn = {0303-402X},
number = 4,
volume = 289,
place = {United States},
year = {2011},
month = {1}
}