Conductive properties of switchable photoluminescence thermosetting systems based on liquid crystals

Langmuir : the ACS Journal of Surfaces and Colloids
A TercjakI Mondragon

Abstract

Conductive properties of different thermosetting materials modified with nematic 4'-(hexyl)-4-biphenyl-carbonitrile (HBC) liquid crystal and rutile TiO(2) nanoparticles were successfully studied by means of tunneling atomic force miscroscopy (TUNA). Taking into account the liquid crystal state of the HBC at room temperature, depending on both the HBC content and the presence of TiO(2) nanoparticles, designed materials showed different TUNA currents passed through the sample. The addition of TiO(2) nanoparticles into the systems multiply the detected current if compared to the thermosetting systems without TiO(2) nanoparticles and simultaneously stabilized the current passed through the sample, making the process reversible since the absolute current values were almost the same applying both negative and positive voltage. Moreover, thermosetting systems modified with liquid crystals with and without TiO(2) nanoparticles are photoluminescence switchable materials as a function of temperature gradient during repeatable heating/cooling cycle. Conductive properties of switchable photoluminescence thermosetting systems based on liquid crystals can allow them to find potential application in the field of photoresponsive devices, with ...Continue Reading

References

Mar 24, 2000·Journal of Magnetic Resonance·P HolsteinJ Karger
May 18, 2000·Accounts of Chemical Research·A Hagfeldt, M Grätzel
Feb 3, 2005·Chemical Communications : Chem Comm·Noriyo YamanakaShozo Yanagida
Feb 3, 2005·Chemical Communications : Chem Comm·Insik InSang Youl Kim
Jul 21, 2006·The Journal of Physical Chemistry. B·Cristina Da CruzValérie Cabuil

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Citations

Apr 17, 2016·Carbohydrate Polymers·Agnieszka TercjakSidney J L Ribeiro

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