Matches in SemOpenAlex for { <https://semopenalex.org/work/W4366572354> ?p ?o ?g. }
- W4366572354 endingPage "736" @default.
- W4366572354 startingPage "725" @default.
- W4366572354 abstract "The liquid crystal dimers, the 1-(4-substitutedazobenzene-4′-yloxy)-4-(4-cyanobiphenyl-4′-yl)butanes (CB4OABX), are reported in which the terminal substituent is either a methyl, methoxy, butyl, butyloxy, cyano or nitro group. The butyloxy spacer endows these dimers with the required molecular curvature to exhibit the twist-bend nematic phase in addition to showing the conventional nematic phase. Their transitional properties are compared to those of the corresponding dimers with either a pentyloxy or hexyloxy spacer. As expected, the even-membered pentyloxy-based dimers show the highest nematic–isotropic transition temperature, TNI, and exhibit smectic behaviour. These observations are attributed to their linear molecular shapes. The values of both the twist-bend nematic–nematic transition temperature, TNTBN, and TNI increase on passing from the butyloxy to hexyloxy spacer, but the change in TNI is greater than that in TNTBN. Thus, the ratio TNTBN is greater for the shorter spacer reinforcing the view that molecular curvature drives the formation of the NTB phase relative to the N phase. By comparison, the melting point decreases on passing from the butyloxy to hexyloxy spacer. Thus, increasing molecular curvature simultaneously increases both the melting point and NTB phase stability and this highlights the design challenge in obtaining dimers that exhibit enantiotropic NTB–I transitions." @default.
- W4366572354 created "2023-04-22" @default.
- W4366572354 creator A5026726371 @default.
- W4366572354 creator A5046469936 @default.
- W4366572354 creator A5060658536 @default.
- W4366572354 creator A5068567685 @default.
- W4366572354 date "2023-03-16" @default.
- W4366572354 modified "2023-09-27" @default.
- W4366572354 title "Molecular structure and the twist-bend nematic phase: the role of spacer length in liquid crystal dimers" @default.
- W4366572354 cites W1935116657 @default.
- W4366572354 cites W1989931206 @default.
- W4366572354 cites W1990620099 @default.
- W4366572354 cites W2003588958 @default.
- W4366572354 cites W2010885817 @default.
- W4366572354 cites W2014698551 @default.
- W4366572354 cites W2017956517 @default.
- W4366572354 cites W2020045620 @default.
- W4366572354 cites W2023124632 @default.
- W4366572354 cites W2030841140 @default.
- W4366572354 cites W2031822273 @default.
- W4366572354 cites W2040315761 @default.
- W4366572354 cites W2044014486 @default.
- W4366572354 cites W2052891955 @default.
- W4366572354 cites W2061245451 @default.
- W4366572354 cites W2063644787 @default.
- W4366572354 cites W2064861328 @default.
- W4366572354 cites W2083384015 @default.
- W4366572354 cites W2097933101 @default.
- W4366572354 cites W2133716769 @default.
- W4366572354 cites W2134335456 @default.
- W4366572354 cites W2154069299 @default.
- W4366572354 cites W2156013556 @default.
- W4366572354 cites W2160216942 @default.
- W4366572354 cites W2168027258 @default.
- W4366572354 cites W2275242636 @default.
- W4366572354 cites W2308279817 @default.
- W4366572354 cites W2310430933 @default.
- W4366572354 cites W2331388644 @default.
- W4366572354 cites W2396242416 @default.
- W4366572354 cites W2411157226 @default.
- W4366572354 cites W2467578952 @default.
- W4366572354 cites W2468348741 @default.
- W4366572354 cites W2471809395 @default.
- W4366572354 cites W2532811421 @default.
- W4366572354 cites W2548720942 @default.
- W4366572354 cites W2554469659 @default.
- W4366572354 cites W2612451525 @default.
- W4366572354 cites W2761248100 @default.
- W4366572354 cites W2787766663 @default.
- W4366572354 cites W2789447238 @default.
- W4366572354 cites W2792500372 @default.
- W4366572354 cites W2793198935 @default.
- W4366572354 cites W2793824200 @default.
- W4366572354 cites W2802432821 @default.
- W4366572354 cites W2802569912 @default.
- W4366572354 cites W2891542236 @default.
- W4366572354 cites W2897411699 @default.
- W4366572354 cites W2922389516 @default.
- W4366572354 cites W2936455493 @default.
- W4366572354 cites W2947405543 @default.
- W4366572354 cites W2963758145 @default.
- W4366572354 cites W2966076576 @default.
- W4366572354 cites W2967101247 @default.
- W4366572354 cites W2971357586 @default.
- W4366572354 cites W2978599918 @default.
- W4366572354 cites W2994789123 @default.
- W4366572354 cites W3003176794 @default.
- W4366572354 cites W3008240329 @default.
- W4366572354 cites W3010562553 @default.
- W4366572354 cites W3036617713 @default.
- W4366572354 cites W3039006209 @default.
- W4366572354 cites W3041172132 @default.
- W4366572354 cites W3080142942 @default.
- W4366572354 cites W3088181898 @default.
- W4366572354 cites W3092637978 @default.
- W4366572354 cites W3100106433 @default.
- W4366572354 cites W3104014869 @default.
- W4366572354 cites W3104714247 @default.
- W4366572354 cites W3113501057 @default.
- W4366572354 cites W3117364961 @default.
- W4366572354 cites W3120913664 @default.
- W4366572354 cites W3125838753 @default.
- W4366572354 cites W3132689064 @default.
- W4366572354 cites W3158724805 @default.
- W4366572354 cites W3186347433 @default.
- W4366572354 cites W3194218370 @default.
- W4366572354 cites W3217188617 @default.
- W4366572354 cites W4214491419 @default.
- W4366572354 cites W4214504887 @default.
- W4366572354 cites W4223461623 @default.
- W4366572354 cites W4224069307 @default.
- W4366572354 cites W4224314865 @default.
- W4366572354 cites W4282930750 @default.
- W4366572354 cites W4283640783 @default.
- W4366572354 cites W4294677015 @default.
- W4366572354 cites W4296673934 @default.
- W4366572354 cites W4309921736 @default.
- W4366572354 cites W4311049351 @default.