کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6594493 | 1423667 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Self-assembling and photophysical properties of the organogelators based on cyanostyryl-substituted carbazoles
ترجمه فارسی عنوان
خواص خودآموزی و فتوفیزیکی گیاهان سازنده بر پایه کربازول های جایگزین سیانوستریل
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Four cyanostyryl-substituted carbazole derivatives (CN-ODEC1, CN-ODEC2, CN-DDEC1, and CN-DDEC) were synthesized and their self-assembly properties have been studied. It was found that they could form organogels especially in aromatic solvents. Scanning electron microscopy and light microscopy images show that the xerogels formed from monosubstituted derivatives (CN-O/DDEC1) gave well-organized tapes, and those from disubstituted derivatives (CN-O/DDEC2) exhibited heavy entangled three-dimensional structures. The UV-vis absorption and fluorescence emission spectra, as well as X-ray diffraction patterns, suggest that carbazole derivatives underwent J-type Ï-stacking. Meanwhile, we suggested that strong H-bonding and moderate Ï-Ï interactions were the key driving force for the gelation of the monosubstituted derivatives, and head-to-tail “ladder-type” J-aggregates were formed in the gel state. On the other hand, strong Ï-Ï interaction might be considered as the main driving force for the gelation of disubstituted derivatives, and J-aggregates with no well-organized packing mode of molecules were obtained in the gel phase. It should be noticed that aggregation-induced emission was observed during the gelation processes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comptes Rendus Chimie - Volume 21, Issue 2, February 2018, Pages 88-96
Journal: Comptes Rendus Chimie - Volume 21, Issue 2, February 2018, Pages 88-96
نویسندگان
Oudjaniyobi Simalou, Pakoupati Boyode, Kafui Kpegba, Pengchong Xue, Ran Lu, Tierui Zhang,