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Circularly Polarized Luminescence from a Pyrene-Cyclodextrin Supra-Dendron
Langmuir ( IF 3.7 ) Pub Date : 2018-04-19 00:00:00 , DOI: 10.1021/acs.langmuir.8b01035 Yuening Zhang 1, 2 , Dong Yang 2, 3 , Jianlei Han 2 , Jin Zhou 2 , Qingxian Jin 1 , Minghua Liu 2, 3 , Pengfei Duan 2
Langmuir ( IF 3.7 ) Pub Date : 2018-04-19 00:00:00 , DOI: 10.1021/acs.langmuir.8b01035 Yuening Zhang 1, 2 , Dong Yang 2, 3 , Jianlei Han 2 , Jin Zhou 2 , Qingxian Jin 1 , Minghua Liu 2, 3 , Pengfei Duan 2
Affiliation
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Soft nanomaterials with circularly polarized luminescence (CPL) have been currently attracting great interest. Here, we report a pyrene-containing π-peptide dendron hydrogel, which shows 1D and 2D nanostructures with varied CPL activities. It was found that the individual dendrons formed hydrogels in a wide pH range (3–12) and self-assembled into helices with pH-tuned pitches. Through chirality transfer, the pyrene unit could show CPL originated from both the monomer and excimer bands. When cyclodextrin was introduced, different supra-dendrons were obtained with β-cyclodextrin ([email protected]β-CD) and γ-cyclodextrin ([email protected]γ-CD) through host–guest interactions, respectively. Interestingly, the [email protected]β-CD and [email protected]γ-CD supra-dendrons self-assembled into 2D nanosheet and entangled nanofibers, respectively, showing cyclodextrin induced circularly polarized emission from both the monomer and excimer bands of the pyrene moiety. Thus, through a simple host–guest interaction, both the nanostructures and the chiroptical activities could be modulated.
中文翻译：
Su-环糊精Supra-Dendron的圆偏振发光
具有圆偏振发光（CPL）的软纳米材料目前已经引起了极大的兴趣。在这里，我们报告含containing的π肽树枝状水凝胶，其显示具有不同CPL活性的1D和2D纳米结构。结果发现，各个树突在很宽的pH范围（3–12）内形成水凝胶，并通过pH调节的螺距自组装成螺旋状。通过手性转移，the单元可以显示CPL起源于单体和准分子带。当引入环糊精时，β-环糊精（[电子邮件保护的]β-CD）和γ-环糊精（[电子邮件保护的]γ-CD）分别通过宿主-客体相互作用而获得不同的超树突。有趣的是，[受电子邮件保护的]β-CD和[受电子邮件保护的]γ-CD的超树枝分别自组装成二维纳米片和缠结的纳米纤维，显示了环糊精从from部分的单体带和受激准分子带诱导的圆极化发射。因此，通过简单的主客互动，可以调节纳米结构和手性活动。
更新日期：2018-04-19
中文翻译：
Su-环糊精Supra-Dendron的圆偏振发光
具有圆偏振发光（CPL）的软纳米材料目前已经引起了极大的兴趣。在这里，我们报告含containing的π肽树枝状水凝胶，其显示具有不同CPL活性的1D和2D纳米结构。结果发现，各个树突在很宽的pH范围（3–12）内形成水凝胶，并通过pH调节的螺距自组装成螺旋状。通过手性转移，the单元可以显示CPL起源于单体和准分子带。当引入环糊精时，β-环糊精（[电子邮件保护的]β-CD）和γ-环糊精（[电子邮件保护的]γ-CD）分别通过宿主-客体相互作用而获得不同的超树突。有趣的是，[受电子邮件保护的]β-CD和[受电子邮件保护的]γ-CD的超树枝分别自组装成二维纳米片和缠结的纳米纤维，显示了环糊精从from部分的单体带和受激准分子带诱导的圆极化发射。因此，通过简单的主客互动，可以调节纳米结构和手性活动。
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