Transparent Polymer Opal Thin Films with Intense UV Structural Color

被引：5

作者：

Rosetta, Giselle ^{[1
,2
]}

Gunn, Matthew ^{[1
]}

Tomes, John J. ^{[1
]}

Butters, Mike ^{[3
]}

Pieschel, Jens ^{[4
]}

Hartmann, Frank ^{[4
]}

Gallei, Markus ^{[4
,5
]}

Finlayson, Chris E. ^{[1
]}

机构：

[1] Prifysgol Aberystwyth Univ, Dept Phys, Aberystwyth SY23 3BZ, Dyfed, Wales

[2] Varichem Co Ltd, Brynmawr NP23 4BX, Wales

[3] Minton Treharne & Davies, Cardiff CF14 7HY, Wales

[4] Saarland Univ, Polymer Chem, Campus C4 2, D-66123 Saarbrucken, Germany

[5] Saarland Ctr Energy Mat & Sustainabil, Saarene, Campus Saarbrucken C4 2, D-66123 Saarbrucken, Germany

来源：

MOLECULES | 2022年 / 27卷 / 12期

关键词：

photonic crystals; UV spectroscopy; optical characterization; polymers; thin film coatings; UV reflecting films; FABRICATION; CRYSTALS; SPHERES; GAP;

D O I：

10.3390/molecules27123774

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We report on shear-ordered polymer photonic crystals demonstrating intense structural color with a photonic bandgap at 270 nm. Our work examines this UV structural color, originating from a low refractive index contrast polymer composite system as a function of the viewing angle. We report extensive characterization of the angle-dependent nature of this color in the form of 'scattering cones', which showed strong reflectivity in the 275-315 nm range. The viewing range of the scattering was fully quantified for a number of planes and angles, and we additionally discuss the unique spectral anisotropy observed in these structures. Such films could serve as low-cost UV reflection coatings with applications in photovoltaics due to the fact of their non-photobleaching and robust mechanical behavior in addition to their favorable optical properties.

引用

页数：12

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