Azobenzene-decorated cellulose nanocrystals as photo-switchable chiral solutes in nematic liquid crystals
JOURNAL OF MATERIALS CHEMISTRY C, cilt.10, sa.48, ss.18120-18126, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 10 Sayı: 48
- Basım Tarihi: 2022
- Doi Numarası: 10.1039/d2tc04444g
- Dergi Adı: JOURNAL OF MATERIALS CHEMISTRY C
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, MEDLINE, Metadex, Civil Engineering Abstracts
- Sayfa Sayıları: ss.18120-18126
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
In this work, we validate that cellulose nanocrystals (CNCs), surface-functionalized with pro-mesogenic azobenzene pendants, can act as photoswitchable chiral solutes in a nematic liquid crystal (N-LC). Upon UV illumination, the helical pitch and thus the helical twisting power (beta(w)) can be altered based on the trans-cis photoisomerization of the azobenzene pendants. This approach shows that CNCs-biorenewable chiral additives with a commensurate, rod-like shape to N-LC molecules-can be adapted just like common small molecule organic chiral solutes in LC phases based on simple surface modifications.