Title

Studies On Mid-Ir Gain Characteristics Of Er 3+-Doped Chalcogenide Glass Photonic Crystal Fibers

Keywords

H-aggregate; J-aggregate; liquid crystalline mesophase; self-assembly; squaraine dyes

Abstract

The squaraine (SQ) dye, 2,4-bis [4-(N,N-di-n-hexylamino)-2-hydroxyphenyl] squaraine was synthesised, and a series of SQ dye/cholesteryl pelargonate binary mixtures with varying dye concentrations (1%, 3%, 7.5%, 10.8%, 15% and 20% w/w) were prepared. Their phase transitions were investigated using differential scanning calorimetry, polarised light microscopy and X-ray diffraction. The SQ dye itself exhibited no liquid crystalline behaviour. The concentration of the dye in the cholesteric compound proved to have a significant effect on the dye aggregation behaviour and phase transitions in cholesteryl pelargonate, resulting in the appearance of new mesophases and the formation of J- and H-aggregates. The texture morphology, X-ray diffraction data and UV-vis absorbance spectra provide strong evidence of the viability of liquid crystal-directed assembly of the SQ dye. © 2012 Copyright Taylor and Francis Group, LLC.

Publication Date

5-1-2012

Publication Title

Guangdianzi Jiguang/Journal of Optoelectronics Laser

Volume

23

Issue

5

Number of Pages

915-921

Document Type

Article

Personal Identifier

scopus

Socpus ID

84862675842 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84862675842

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