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Effect of acidic aqueous alcohol solution on template sol-gel synthesis of phosphorescent hexagonal mesoporous silica film nanocomposite

Lintang, Hendrik O. and Kinbara, Kazushi and Aida, Takuzo (2011) Effect of acidic aqueous alcohol solution on template sol-gel synthesis of phosphorescent hexagonal mesoporous silica film nanocomposite. Journal of Fundamental Sciences, 7 (2). pp. 67-71. ISSN 2289-5981

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Official URL: https://dx.doi.org/10.11113/mjfas.v7n1.229

Abstract

Here novel mesoporous silica film nanocomposite with a hexagonal structure is successfully synthesized by using phosphorescent columnar assembly of a trinuclear gold(I) pyrazolate complex bearing amphiphilic side chains [Au3Pz3], formed via a weak Au^Au1 metallophilic interaction, as a functional template in the sol-gel synthesis. By controlling the molar ratios of alcohol to acid in an acidic aqueous alcohol solution, the sol-gel synthesis of columnar assembled [Au3Pz3] with a silica source can provide highly ordered hexagonal mesoporous silica film composite [Au3Pz3]/silicahex consisting one-dimensional molecular assembly in the nanoscopic channels. The as-fabricated silica film nanocomposite [Au3Pz3]/silicahex with red emission have phosphorescent properties with luminescence emission centered at 693nm (λext=276nm; Stokes shift, Δλ=417nm) and lifetime at 7.8jus (λext=266nm, λem=690nm).

Item Type:Article
Uncontrolled Keywords:Hexagonal, Mesoporous, Nanocomposites, Sol-gel, Template
Subjects:Q Science
Divisions:Science
ID Code:39919
Deposited By: Fazli Masari
Deposited On:21 Jul 2014 13:20
Last Modified:17 Mar 2019 12:22

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