نشریه شیمی و مهندسی شیمی ایران

نشریه شیمی و مهندسی شیمی ایران

سنتز و شناسایی کمپلکس نوری تک هسته ایی کادمیم (II) به عنوان پیش ماده برای ساخت دیودهای نورگسیل آلی

نوع مقاله : علمی-پژوهشی

نویسندگان
عزت اله نجفی
اسماعیل وصالی
نرگس متقی نیا
باقر محمدی
محمدرضا پورهروی
دانشکده شیمی، دانشگاه پیام نور، تهران، ایران
چکیده
با توجه به نیاز بازار به قطعات نورگسیل و محدودیت نیمه­ هادی­ های معدنی مانند هزینه بالا و محدودیت آنها در تنظیم طول موج نشری در ساخت دیودهای نورگسیل غیرآلی، امروزه استفاده از کمپلکس­ های فلزی جهت تهیه دیودهای نورگسیل آلی به  علت سادگی تهیه آنها و هزینه پایین در استفاده از آنها بسیار مورد توجه قرار گرفته است. در این کار پژوهشی،کمپلکس نوری تک هسته ­­ایی کادمیم(II)­­، (1){[Cd(NO3)(bpy)2(L)]CH3OH}، از واکنش کادمیم نیترات با لیگاندهای آنتراسن-9-کربوکسیلیک اسید (LH) و ۲،'۲-بای‌پیریدین (bpy)با استفاده از روش لوله جانبی تهیه و به وسیله روش­های IR، UV-vis و آنالیز عنصری به طور کامل شناسایی شد. ترکیب ­­1­ بعد از بلورگیری برای درک بهتر ساختارش بوسیله پراش اشعه ایکس تعیین ساختار شد. نتایج نشان داد که ترکیب ­1 یک کمپلکس تک هسته ­ای می ­باشد که در واحد بی­ تقارن آن دو مولکول بای­پیریدین، یک آنیون آنتراسن-9-کربوکسیلیت، یک آنیون نیترات، یک یون کادمیم وجود دارد و در سیستم تری­کلینیک با گروه فضایی P کریستاله شده است. پایداری گرمایی کمپلکس ­1 به وسیله روش وزن ‌سنجی حرارتی­(TGA) مورد بررسی قرار گرفت. از ترکیب 1 به عنوان لایه نشری در دو غلظت متفاوت در ساخت دیودهای نورگسیل استفاده شد.
کلیدواژه‌ها
کمپلکس تک هسته ای
آنتراسن-9-کربوکسیلیک اسید
دیود نورگسیل آلی
خواص الکتریکالی
پایداری گرمایی

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