Int. J. of Nanomanufacturing   »   2013 Vol.9, No.3/4

 

 

Title: Fluorescence of nanocomposite materials with hydroxyl-functionalised ionic liquid confined into mesoporous silica gel

 

Authors: Juan Zhang; Juan Yuan; Jing Yang; Qiujuan Ma

 

Addresses:
School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou, 450008, China
School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou, 450008, China
School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou, 450008, China
School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou, 450008, China

 

Abstract: Nanocomposite materials (IL-sg) of hydroxyl-functionalised ionic liquid 1-hydroxyethyl-3-methlyimidazolium dicyanamide EOHMImN(CN)2 physically confined into mesoporous silica gel are synthesised according to a proper sol-gel process. The silica gel has disordered wormhole-like pore structure and average pore diameter of 3.3-6.2 nm. The materials exhibit notably enhanced fluorescence emissions compared with pure IL. The hydroxyl group on the cation of IL has an obvious effect on the fluorescence emissions of pure IL and the materials, i.e. the emission intensity of pure EOHMImN(CN)2 is c.a. 1.8 times stronger than that of pure IL 1-ethyl-3-methlyimidazolium dicyanamide EMImN(CN)2, however, the emission intensity of EOHMImN(CN)2-sg is c.a. two times weaker than that of EMImN(CN)2-sg.

 

Keywords: nanocomposites; ionic liquid; sol-gel; fluorescence; emission; mesoporous silica gel; pore structure; nanotechnology; hydroxyl.

 

DOI: 10.1504/IJNM.2013.056058

 

Int. J. of Nanomanufacturing, 2013 Vol.9, No.3/4, pp.320 - 329

 

Submission date: 02 Dec 2012
Date of acceptance: 24 Jan 2013
Available online: 29 Aug 2013

 

 

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