تخليق وتوصيف وسلوك البلورات السائلة لـ 4'-bromo-4-alkanoyloxy chalcone
DOI:
https://doi.org/10.54153/sjpas.2026.v8i1.1255الكلمات المفتاحية:
Chalcone، Liquid crystal، Esterification، 4-Bromoacetophenoneالملخص
تبحث هذه الدراسة في وجود خصائص بلورية سائلة في إسترات الجالكون ذات أطوال سلاسل هيدروكربونية مختلفة. صُنعت هذه المركبات، ذات الصيغة العامة [Br-Ph-CO-CH=CH-Ph-O-CO-CnH2n+1]، بتفاعل 4-برومو أسيتوفينون مع 4-هيدروكسي بنزالدهيد، ثم تفاعل الناتج مع هاليدات الحامض الكربوكسيلي في وجود محفزات مناسبة. وُشخصت المركبات باستخدام تقنيات تحويل فورييه للأشعة تحت الحمراء (FTIR)، والرنين المغناطيسي النووي أحادي الهيدروجين (H-NMR1)، والرنين المغناطيسي النووي أحادي الكربون (13C-NMR). تم تأكيد وجود خصائص بلورية سائلة باستخدام جهاز المسعر المسح التفاضلي (DSC)، وتم التأكد من شكل النسيج المتكون باستخدام المجهر الضوئي المستقطب (POM). كانت المركبات A1 وA7 وA9 أحادية الشكل، بينما كانت المركبات A8 وA10 ثنائية الشكل، ولم تُظهر المركبات المتبقية خصائص بلورية سائلة
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