Pregled bibliografske jedinice broj: 964644
Fine-tuning effect of p–p interactions on the stability of the NTB phase
Fine-tuning effect of p–p interactions on the stability of the NTB phase // Soft matter, 14 (2018), 8466-8474 doi:10.1039/c8sm01569d (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 964644 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Fine-tuning effect of p–p interactions on the stability of the NTB phase
Autori
Knežević, Anamarija ; Sapunar, Marin ; Buljan, Anđela ; Dokli, Irena ; Hameršak, Zdenko ; Kontrec, Darko ; Lesac, Andreja
Izvornik
Soft matter (1744-683X) 14
(2018);
8466-8474
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
liquid crystals ; dimers ; twist-bend nematogen ; π-π interactions
Sažetak
The synthesis and liquid-crystalline properties are reported for novel bent-shaped dimers in which naphthyl group has been incorporated into the mesogenic cores. In addition to the nematic and twist-bend nematic phase, a new liquid- crystalline phase was observed. The combined experimental and computational study demonstrated how the interplay between the molecular geometry and π- interactions affect the thermal stability of the twist-bend nematic and nematic phases. Correlation between mesomorphic properties and molecular geometry revealed that a greater conformational diversity leads to a broader distribution of bend-angles and destabilization of the NTB phase. Qualitative correlation between the thermal behaviour and electronic structure of the molecules of a similar geometry suggested that the transition temperatures of both nematic phases depend on the relative contribution of dispersion and electrostatic energies which determines the strength of the π-π interactions. These results provide an insight into how subtle changes in chemical structure can be exploited to tune the intermolecular interactions and influence the thermal stability of the liquid crystalline phase.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
HRZZ-IP-2014-09-1525 - Kiralnost od akiralnih tekućih kristala (CALC) (Lesac, Andreja, HRZZ - 2014-09) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Profili:
Darko Kontrec
(autor)
Zdenko Hameršak
(autor)
Andreja Lesac
(autor)
Marin Sapunar
(autor)
Irena Dokli
(autor)
Anđela Buljan
(autor)
Anamarija Knežević
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE