Deep-Blue Photoluminescent Properties of a Liquid Crystal TB10A

Abstract:

A typical liquid crystal (LC) N,N-(terephthalylidene) bis (4-decylbenzenamine) (TB10A) was firstly synthesized at room temperature. The synthesized LC TB10A were investigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), ultraviolet-visible (UV-vis) spectrophotometry, photoluminecence (PL) spectroscopy and electronic structure calculations. Upon the 325 nm excitation, the dilute tetrahydrofuran solutions of TB10A could give off blue PL. With Hückel tight-binding method, the electronic structures of the TB10A were calculated. Our results demonstrated that the deep-blue PL observed at about 489 nm (2.54 eV) can be assigned to the π* → n transition for the TB10A.

• Periodical: Solid State Phenomena (Volumes 181-182)
• Pages: 33-38
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.181-182.33
• Online since: November 2011
• Authors: Qing Lan Ma, Rui Xiong, Yuan Ming Huang
• Keywords: Electronic Structure, Liquid Crystal, Optical Absorbance, Photoluminescence (PL)

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