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Novel global-like second-order nonlinear optical dendrimers: convenient synthesis through powerful click chemistry and large NLO effects achieved by using simple azo chromophore  
Novel global-like second-order nonlinear optical dendrimers: convenient synthesis through powerful click chemistry and large NLO effects achieved by using simple azo chromophore
資料類型: PDF文件
關(guān)鍵詞: second-order  nonlinear  optical  dendrimers  click  chemistry  azo  
chromophore  
資料大小: 490k
所屬學(xué)科: 功能高分子
來源: 來源網(wǎng)絡(luò)
簡(jiǎn)介:
In this paper, global-like dendrimers, G1-TPA, G2-TPA and G3-TPA, bearing 9, 21 and 45 azobenzene chromophore moieties, respectively, were conveniently prepared with high purity and satisfactory yields, through the combination of divergent and convergent approaches, coupled with the utilization of the powerful Sharpless ‘‘click’’ reaction. Due to their perfect 3D structure and the isolation effect of the exterior benzene moieties and the interior triazole rings, these global-like dendrimers exhibited large d33 (a second harmonic generation coefficient) values, e.g., 246.0 pm V-1 for G3-TPA, which, to the best of our knowledge, is a new record reported so far for simple azo chromophore moieties.
上傳人: lizhen
上傳時(shí)間: 2014-02-11 22:11:41
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