Constrained thermoresponsive polymers – new insights into fundamentals and applications

• Patricia Flemming,
• Alexander S. Münch,
• Andreas Fery and
• Petra Uhlmann

Beilstein J. Org. Chem. 2021, 17, 2123–2163, doi:10.3762/bjoc.17.138

• , which results in a various number of tailored models [75][76][77], like the Flory–Huggins–van Santen (FHS) model. The FHS model shows that the combinatorial entropy of mixing is much smaller for macromolecules than for compounds with a low molar mass. For modelling of phase diagrams with LCST and/or

• reached in the four polymer arrangements studied. Therefore, we cannot speak here of phase diagrams in the classical sense, as well as about a UCST and LCST in the strict sense. Nevertheless, the micelles, star polymers and grafted polymers show a responsive behavior, which will now be discussed in

• density functional theory, the temperature-dependent swelling behavior of a polymer brush could be simulated in comparison to the corresponding phase diagrams of the free, unbound polymer chains in solution [124]. The corresponding diagrams are summarized in Figure 7 and show the typical thickness

Novel biphenyl-substituted 1,2,4-oxadiazole ferroelectric liquid crystals: synthesis and characterization

• Mahabaleshwara Subrao,
• Dakshina Murthy Potukuchi,
• Girish Sharada Ramachandra,
• Poornima Bhagavath,
• Sangeetha G. Bhat and
• Srinivasulu Maddasani

Beilstein J. Org. Chem. 2015, 11, 233–241, doi:10.3762/bjoc.11.26

• 13b (C12.Ox.C*Cn) are presented in Table 1 and Table 2, respectively. The phase diagrams are constructed with DSC cooling cycle data of the 13a (Ph.Ox.C*Cn) and the 13b (C12.Ox.C*Cn) series and are presented in Figure 5 and Figure 6, respectively. It is realized that the compounds of the 13a (Ph.Ox.C

Formation of smectic phases in binary liquid crystal mixtures with a huge length ratio

• Nadia Kapernaum,
• Friederike Knecht,
• C. Scott Hartley,
• Jeffrey C. Roberts,
• Robert P. Lemieux and
• Frank Giesselmann

Beilstein J. Org. Chem. 2012, 8, 1118–1125, doi:10.3762/bjoc.8.124

• phase of the longer mesogen was identified as a smectic F phase. Keywords: bidispersity; liquid crystals; phase diagrams; smectic phases; smectic F phase; structure and dynamics; Introduction The mixing of different liquid crystals is a common technique to tailor their properties for specific

Molecular length distribution and the formation of smectic phases

• Nadia Kapernaum,
• C. Scott Hartley,
• Jeffrey C. Roberts,
• Robert P. Lemieux and
• Frank Giesselmann

Beilstein J. Org. Chem. 2009, 5, No. 65, doi:10.3762/bjoc.5.65

• Nadia Kapernaum C. Scott Hartley Jeffrey C. Roberts Robert P. Lemieux Frank Giesselmann Institut für Physikalische Chemie, Universität Stuttgart, D-70569 Stuttgart, Germany Department of Chemistry, Queen’s University, Kingston, Ontario, Canada 10.3762/bjoc.5.65 Abstract The phase diagrams of two

• by extensive out-of-layer fluctuations. Keywords: bidispersity; liquid crystals; phase diagrams; smectic phases; structure and dynamics; Introduction The classical (and highly successful) approach to systematically tailor liquid crystal materials for specific applications is the formulation of

• phases. The smectic order parameters Σ of the mixtures could not be compared with those of the pure compounds, as the method described in [12] only applies to SmA phases whereas the pure components exhibit SmC phases only. Conclusions Our investigations on two different phase diagrams of mesogenic