3D Orientational Control in Self-Assembled Thin Films with Sub-5 nm Features by Light

Nickmans, K. ; Bögels, G.M. ; Sánchez-Somolinos, C. (Universidad de Zaragoza) ; Murphy, J.N. ; Leclère, P. ; Voets, I.K. ; Schenning, A.P.H.J.

Resumen: While self-assembled molecular building blocks could lead to many next-generation functional organic nanomaterials, control over the thin-film morphologies to yield monolithic sub-5 nm patterns with 3D orientational control at macroscopic length scales remains a grand challenge. A series of photoresponsive hybrid oligo(dimethylsiloxane) liquid crystals that form periodic cylindrical nanostructures with periodicities between 3.8 and 5.1 nm is studied. The liquid crystals can be aligned in-plane by exposure to actinic linearly polarized light and out-of-plane by exposure to actinic unpolarized light. The photoalignment is most efficient when performed just under the clearing point of the liquid crystal, at which the cylindrical nanostructures are reoriented within minutes. These results allow the generation of highly ordered sub-5 nm patterns in thin films at macroscopic length scales, with control over the orientation in a noncontact fashion.

Idioma: Inglés

DOI: 10.1002/smll.201701043

Año: 2017

Publicado en: Small 13, 33 (2017), [11 pp]
ISSN: 1613-6810

Factor impacto JCR: 9.598 (2017)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 16 / 146 = 0.11 (2017) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 22 / 285 = 0.077 (2017) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 11 / 92 = 0.12 (2017) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 9 / 67 = 0.134 (2017) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 17 / 171 = 0.099 (2017) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 10 / 146 = 0.068 (2017) - Q1 - T1

Factor impacto SCIMAGO: 3.83 - Biomaterials (Q1) - Biotechnology (Q1) - Nanoscience and Nanotechnology (Q1) - Medicine (miscellaneous) (Q1) - Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27978-C02-02

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)