Carbazole-Based Organogel as a Scaffold To Construct Energy Transfer Arrays with Controllable Fluorescence Emission

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• 作者：Xinchun Yang ; Ran Lu ; Pengchong Xue ; Bin Li ; Defang Xu ; Tinghua Xu ; Yingying Zhao
• 刊名：Langmuir
• 出版年：2008
• 出版时间：December 2, 2008
• 年：2008
• 卷：24
• 期：23
• 页码：13730-13735
• 全文大小：427K
• 年卷期：v.24,no.23(December 2, 2008)
• ISSN：1520-5827

文摘

A diaryldiketopyrrolopyrrole derivative functionalized with phenothiazine moieties (DPPP) was synthesized and introduced into the ordered 4-(3,6-di-tert-butyl-9H-carbazol-9-yl)benzamide (TBCB) organogel system. It was found that TBCB-based gel became a scaffold to make DPPP molecules line up along the gel fibers, resulting in new self-assembled arrays, whose XRD patterns were quite different from those of the neat TBCB gel and DPPP crystal. In the composite gel, the occurrence of a partial energy transfer from the excited light-harvesting antenna of TBCB to the DPPP acceptor was confirmed on the basis of time-dependent and time-resolved fluorescence investigations. Remarkably, the composite gel could emit intense red light or purplish white light by tuning the excitation wavelength. Such ordered soft materials with color-tunable emission may possess potential applications in sensor and photonic devices.