Next Article in Journal
Temperature and Recognition Dual Responsive Poly(N-Isopropylacrylamide) and Poly(N,N-Dimethylacrylamide) with Adamantyl Side Group
Next Article in Special Issue
Photocatalytic Activity of Nanotubular TiO2 Films Obtained by Anodic Oxidation: A Comparison in Gas and Liquid Phase
Previous Article in Journal
Tuning of Schottky Barrier Height at NiSi/Si Contact by Combining Dual Implantation of Boron and Aluminum and Microwave Annealing
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle

Growth and Brilliant Photo-Emission of Crystalline Hexagonal Column of Alq3 Microwires

1
Department of Applied Organic Materials Engineering, Inha University, Incheon 22212, Korea
2
Department of Chemical Engineering, Inha University, Incheon 22212, Korea
*
Author to whom correspondence should be addressed.
These authors contributed equally.
Materials 2018, 11(4), 472; https://doi.org/10.3390/ma11040472
Received: 28 February 2018 / Revised: 16 March 2018 / Accepted: 19 March 2018 / Published: 22 March 2018
(This article belongs to the Special Issue Novel Photoactive Materials)
  |  
PDF [1916 KB, uploaded 3 May 2018]
  |  

Abstract

We report the growth and nanoscale luminescence characteristics of 8-hydroxyquinolinato aluminum (Alq3) with a crystalline hexagonal column morphology. Pristine Alq3 nanoparticles (NPs) were prepared using a conventional reprecipitation method. Crystal hexagonal columns of Alq3 were grown by using a surfactant-assisted self-assembly technique as an adjunct to the aforementioned reprecipitation method. The formation and structural properties of the crystalline and non-crystalline Alq3 NPs were analyzed with scanning electron microscopy and X-ray diffraction. The nanoscale photoluminescence (PL) characteristics and the luminescence color of the Alq3 single NPs and their crystal microwires (MWs) were evaluated from color charge-coupled device images acquired using a high-resolution laser confocal microscope. In comparison with the Alq3 NPs, the crystalline MWs exhibited a very bright and sharp emission. This enhanced and sharp emission from the crystalline Alq3 single MWs originated from effective π-π stacking of the Alq3 molecules due to strong interactions in the crystalline structure. View Full-Text
Keywords: organometal; Alq3; photoluminescence; crystallinity; surfactant; confocal microscope organometal; Alq3; photoluminescence; crystallinity; surfactant; confocal microscope
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed
Printed Edition Available!
A printed edition of this Special Issue is available here.

Share & Cite This Article

MDPI and ACS Style

Kim, S.; Kim, D.H.; Choi, J.; Lee, H.; Kim, S.-Y.; Park, J.W.; Park, D.H. Growth and Brilliant Photo-Emission of Crystalline Hexagonal Column of Alq3 Microwires. Materials 2018, 11, 472.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top