The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: tert-Butyl 2-cyanoacetate( cas:1116-98-9 ) is researched.Formula: C7H11NO2.Chen, Zhen-E.; Zang, Xu-Feng; Qi, Qiang-Long; Zhang, Hai published the article 《Investigation of the photovoltaic performance of dye-sensitized solar cells utilizing 9,9′-bianthracene-based dyes as a co-sensitizer》 about this compound( cas:1116-98-9 ) in Synthetic Metals. Keywords: dye sensitized solar cel bianthracene mol aggregation cosensitization. Let’s learn more about this compound (cas:1116-98-9).
In this paper, we report two interesting metal-free organic co-sensitizers, which use fluorene or carbazole as the donor scaffold and are linked to cyanoacrylic acid via a 9,9′-bianthrylene π-spacer. These organic dyes have a particular twisted structure, and their absorption spectra are complementary to the leading dye MK-3. We investigated the photophys., electrochem., and photovoltaic properties of these two co-sensitizers in detail. Interestingly, when the same concentration of MK-3 dye was co-sensitized with different concentrations of LD2, the performance of the devices did not show a linear change, and the best photovoltaic performance was obtained with sensitized device made with 0.2 mM MK-3 and 0.04 mM LD2. It displayed the power conversion efficiency (PCE) of 6.47% with short-circuit c.d. (Jsc) of 14.54 mA cm-2, open-circuit voltage (Voc) of 0.653 V and fill factor (FF) of 0.681. These results provide a reference for the optimization of the device by the method of co-sensitization; i.e., selecting a suitable co-sensitizer at a suitable concentration may be one of the crucial factors.
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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem