ALIGNMENT STUDY OF A THERMOTROPIC DISCOTIC LIQUID CRYSTAL

William Knihs Andrade; Juliana Eccher; H. Bock (Pq); CRPP

Todos os Trabalhos

Trabalho

Título do Trabalho

ALIGNMENT STUDY OF A THERMOTROPIC DISCOTIC LIQUID CRYSTAL

Autores

William Knihs Andrade
Juliana Eccher
H. Bock (Pq); CRPP

Modalidade

Pôster - resumo

Área temática

Dispositivos optoeletrônicos

Data de Publicação

27/05/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/workshop-do-ineo-2026/1460176-alignment-study-of-a-thermotropic-discotic-liquid-crystal

ISBN

978-65-272-2467-9

Palavras-Chave

Homeotropic alignment, liquid crystals, semiconductors

Resumo

The development of organic electronics provides electronic components to the industry that are alternatives to the inorganic semiconductors, but with higher structural flexibility, less thickness, weight and cost [1]. Liquid crystal (LC) materials in their mesophases show a molecular organization similar to that of a solid crystal, and can also be almost as fluid as a liquid. It is possible to control the molecular ordering of these materials in relation to the substrate, with molecules aligned face-to-face or edge-to-edge, through thermal treatments [2]. These properties give the semiconductor material a high potential for use in devices, such as Organic Field Effect Transistor (OFETs), Organic Light Emitting Diodes (OLEDs), Organic Solar Cells (OSCs) [1]. The present work aims to investigate the homeotropic alignment (face-on configuration) in the columnar hexagonal mesophase of a discotic LC consisting of the aromatic center benzo[ghi]perilene-diimide surrounded by peripheral aliphatic chains with 11 carbons, referred to here as BPD-11. To investigate homeotropic alignment in films, different strategies were implemented, such as the formation of blends and bilayer samples with another columnar liquid crystal whose alignment parameters are already known [3]; thermal treatments applied to individual BPD-11 films, either in open films or in confined films using a sacrificial polymeric layer or glass cells. The effectiveness analysis of those methods was through Polarized Optical Microscopy (POM) and photophysical measurements. The results showed a material with forming potential of homeotropic alignment that can be used in organic electronic applications. This work and its divulgation are only possible due to the fostering of national and international organizations: CNPq, INCT/ INEO, FAPESP (project number 2025/27044-5), CAPES and CAPES-COFECUB (number: Ph-C 962/20). [1] Ruiz, C. et al. Organic Semiconductors toward Electronic Devices: High Mobility and Easy Processability. The Journal of Physical Chemistry Letters, v. 3, n. 11, p. 1428-1436, 2012. ISSN 1948-7185. https://doi.org/10.1021/jz300251u. [2] Yilmaz Canli, N. et al. Bilayer polymer/fullerene solar cells with a liquid crystal. Thin Solid Films, v. 560, p. 71-76, 2014. ISSN 0040-6090. https://doi.org/10.1016/j.tsf.2013.11.119. [3] Eccher, J. et al. Order Induced Charge Carrier Mobility Enhancement in Columnar Liquid Crystal Diodes. ACS Appl. Mater. Interfaces, v.5, 22, 11935–11943 2013. https://doi.org/10.1021/am403681q.

Título do Evento: Workshop do INEO 2026
Cidade do Evento: Nazaré Paulista
Título dos Anais do Evento: Anais do Workshop do INEO 2026
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

ANDRADE, William Knihs; ECCHER, Juliana; CRPP, H. Bock (Pq);. ALIGNMENT STUDY OF A THERMOTROPIC DISCOTIC LIQUID CRYSTAL.. In: Anais do Workshop do INEO 2026. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2026. Disponível em: https//www.even3.com.br/anais/workshop-do-ineo-2026/1460176-ALIGNMENT-STUDY-OF-A-THERMOTROPIC-DISCOTIC-LIQUID-CRYSTAL. Acesso em: 10/08/2026