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Polymorphic tin dioxide synthesis via sol–gel mineralization of ethyl–cyanoethyl cellulose lyotropic liquid crystals

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Abstract

The polymorphic tin dioxide (SnO2) was synthesized by calcinating the sol–gel mineralized hybrid of the tin source solution (SnCl4/ethanol/H2O) and the lyotropic liquid crystal of ethyl–cyanoethyl cellulose((E-CE)C)/acrylic acid (AA). The sub-micrometer SnO2 spheres with bimodal distribution at 370 and 860 nm were obtained after calcinating the hybrid at 400°C for 5 h. When the hybrid was exposed to ultraviolet first and then calcinated the flying-saucer-like SnO2 was formed. The exposure time was found to influence the morphology of the as-prepared SnO2. Except for the spherical and the flying-saucer-like SnO2, a small amount of well-developed polyhedral SnO2 was also observed in the as-prepared samples. On this basis, the lyotropic liquid crystal of (E-CE)C/AA afforded a novel route to obtain polymorphic SnO2.

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Abbreviations

SnO2 :

Tin dioxide

(E-CE)C:

Ethyl-cyanoethyl cellulose

AA:

Acrylic acid

EUV:

Extreme ultraviolet

PS:

Polystyrene

PMMA:

Polymethylmethacrylate

MCF:

Macrocellular foam

FE-SEM:

Field emission scanning electron microscope

GB:

Gentle beam

UV:

Ultraviolet

WAXD:

Wide angle X-ray diffraction

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Acknowledgements

A part of this work was performed under the auspices of MEXT (Ministry of Education, Culture, Science and Technology, Japan) under contract on the subject “Leading Project for EUV lithography source development”

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Authors and Affiliations

  1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, Japan, 565-0871

    Qincui Gu, Keiji Nagai, Mitsuo Nakai & Takayoshi Norimatsu

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  1. Qincui Gu
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  2. Keiji Nagai
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  3. Mitsuo Nakai
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  4. Takayoshi Norimatsu
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Correspondence to Keiji Nagai.

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Gu, Q., Nagai, K., Nakai, M. et al. Polymorphic tin dioxide synthesis via sol–gel mineralization of ethyl–cyanoethyl cellulose lyotropic liquid crystals. Colloid Polym Sci 284, 429–434 (2006). https://doi.org/10.1007/s00396-005-1394-2

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