Md. Rabiul Karim, Md. Rezaul Karim Sheikh, Rosiyah Yahya, Noordini M. Salleh et al.
A series of azo-ester linked mesogen containing liquid crystalline acrylate compounds C1-C6 having different terminal groups (–F, –Cl, –Br, –OCH3, –OC2H5 and –OC3H7) were successfully synthesised and characterised. The chemical structure, purity, thermal stability, mesophase behaviour and optical pr...
Md. Rabiul Karim, Md. Rezaul Karim Sheikh, Rosiyah Yahya, Noordini M. Salleh et al.
Md. Rabiul Karim, Md. Rezaul Karim Sheikh, Noordini M. Salleh, Rosiyah Yahya et al.
Siti Nur Fadhilah Sardon, Nor Mas Mira Abd Rahman, Md. Rabiul Karim, N. Idayu Zahid et al.
Four azo-ester mesogens with lateral methyl were synthesized where these compounds are differed by the terminal substituents i.e. –H, –Cl, –Br and –CN. The compound with -H terminal substituent displayed nematic behavior with narrow mesophase range while electron-withdrawing groups terminated compou...
Md. Rabiul Karim, Md. Rezaul Karim Sheikh, Rosiyah Yahya, Noordini M. Salleh et al.
Noordini M. Salleh, Md. Rezaul Karim Sheikh, Rosiyah Yahya, Md. Rabiul Karim et al.
Md. Rabiul Karim, Rosiyah Yahya, Md. Rezaul Karim Sheikh, Noordini M. Salleh et al.
Nur Syafiqah Farhanah Dzulkharnien, Noordini M. Salleh, Rosiyah Yahya, Md. Rabiul Karim
A series of imine-ester-linked benzothiazole mesogen-based liquid crystalline (LC) monomers (M1–M4) having polymerizable methacrylate functional group as the terminal were designed and synthesized. These monomers were differentiated from each other by varying the terminal substituents (-H, -CH3, -OC...
Md. Rabiul Karim, Md. Rezaul Karim Sheikh, Mohammad S. Islam, Noordini M. Salleh et al.
Azo-ester mesogen containing two liquid crystalline compounds C1-C2 having polymerizable acrylate functional group as the terminal were designed and synthesized. The chemical structures and purity of the synthesized compounds were confirmed by different spectroscopic techniques such as FT-IR, 1H NMR...
Sopia Saging, Noraini Ahmad, Md. Rabiul Karim, Weng Nam Lee et al.
Nur Syafiqah Farhanah Dzulkharnien, Md. Rabiul Karim, N. Idayu Zahid, Nor Mas Mira Abd Rahman et al.
The optical properties of a series of side chain liquid crystalline polymers (P1-P3) containing azo-benzothiazole mesogen with different terminal substituents (-H, -CH 3 and -OCH 2 CH 3 ) in four organic solvents of varying polarity have been investigated by absorption and fluorescence spectral anal...
Md. Rabiul Islam, Md. Abdur Rakib, Noordini M. Salleh, Mst. Maimuna Yasmin et al.
The design of azo-imine derivatives with tunable photochromic and nonlinear optical (NLO) properties is crucial for developing advanced optoelectronic materials. In this study, three new azo-imine derivatives ( C1–C3 ) incorporating methyl (−CH 3 ), methoxy (−OCH 3 ), and chloro ( Cl) substituents, ...
Paris Elias Georghiou, Md. Rabiul Islam, Md. Abdur Rakib, Noordini M. Salleh et al.