检索结果-南通市图书馆

Hybrids of gold nanoparticles and oligo(p-phenyleneethynylene)s end-functionalized with alkynylruthenium groups:Outstanding two-photon absorption in the second biological window

引用

Nano Research 2020年第10期13卷 2755-2762页

作者： Cristóbal Quintana Mahbod Morshedi Jun Du Joseph p.L.Morrall Jan K.Zaręba Marek Samoc marie p.cifuentes Mark G.Humphrey I Research School of Chemistry Australian National UnriversityCanberraACT 2601Australia Advanced Materials Engineering and Modelling Group Wroclaw University of Science and TechnologyWroclaw 50370Poland

Oligo(p-phenyleneethynylene)s(OpEs)end-capped with(alkynyl)bis(diphosphine)ruthenium and thiol/thiolate groups stabilize ca.2 nm diameter gold nanoparticles(AuNps).The morphology,elemental composition and stability of the resultant organometallic OpE/AuNp hybrid materials have been defined using a combination of molecular-and nano-material chacterization *** hybrids display long-term stability in solution(more than a month),good solubility in organic solvents,reversible rutheniumcentered oxidation,and transparency beyond 800 nm,and possess very strong nonlinear absorption activity at the first biological window,and unprecedented two-photon absorption activity in the second biological window(σ2 up to 38,000 GM at 1,050 nm).

关键词： gold nanoparticles inorganic materials metal alkynyl complexes nonlinear optics organometallics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nonlinear absorption and nonlinear refraction in ruthenium alkynyl complexes

Nonlinear absorption and nonlinear refraction in ruthenium a...

引用

国际光子学、生物光子学和纳光子学研讨会

作者： Marek Samoc Mark G.Humphrey marie p.cifuentes Laser physics Centre and Department of Chemistry The Australian National University Canberra ACT 0200 Australia Laser physics Centre and Department of Chemistry The Australian National University Canberra ACT 0200 Australia Laser physics Centre and Department of Chemistry The Australian National University Canberra ACT 0200 Australia

Organometallic compounds possessing large numbers of delocalised electrons provide an interesting class of substances for search of new effects and materials for applications in photonics and biophotonics. Of special interest is the additional degree of tailorability of material properties provided by the presence of metal centres which can be modified by external stimuli e.g. electric or magnetic fields. Our research in this field has been concentrated on cubic nonlinear optical properties of organometallic complexes, mostly involving ruthenium and π-electron ethynyl and ethenyl linkages. The need to

关键词： Nonlinear absorption and nonlinear refraction in ruthenium alkynyl complexes

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

A 1,3-dipolar cycloaddition protocol to porphyrin- functionalized reduced graphene oxide with a push-pull motif

引用

Nano Research 2015年第3期8卷 870-886页

作者： Aijian Wang Wang Yu Zhengguo Xiao Yinglin Song Lingliang Long marie p. cifuentes Mark G. Humphrey Chi Zhang China-Australia Joint Research Center for Functional Molecular Materials School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China China-Australia Joint Research Center for Functional Molecular Materials Scientific Research Academy Jiangsu University Zhenjiang 212013 China School of physical Science and Technology Soochow University Suzhou 215006 China Research School of Chemistry Australian National University Canberra ACT0200 Australia

Reduced graphene oxide （RGO） has been covalently functionalized with porphyrin moieties by two methods： A straightforward prato reaction （i.e. a 1,3-dipolar cycloaddition） with sarcosine and a formyl-containing porphyrin, and a stepwise method that involves a 1,3-dipolar cycloaddition to the RGO surface using 4-hydroxybenzaldehyde, followed by nucleophilic substitution with an appropriate porphyrin. The chemical bonding of porphyrins to the RGO surface has been confirmed by ultraviolet/visible absorption, fluorescence, Fourier-transform infrared, and Raman spectroscopies, X-ray powder diffraction and X-ray photoelectron specfroscop）~ transmission electron and atomic force microscopy, and thermogravimetric analysis; this chemical attachment assures efficient electron/energy transfer between RGO and the porphyrin, and affords improved optical nonlinearities compared to those of the RGO precursor and the pristine porphyrin.

关键词： porphyrin cycloaddition reduced graphene oxide nonlinear optics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Multi-walled carbon nanotubes covalently functionalized by axially coordinated metal-porphyrins： Facile syntheses and temporally dependent optical performance

引用

Nano Research 2016年第2期9卷 458-472页

作者： Aijian Wang Jingbao Song Zhipeng Huang Yinglin Song Wang Yu Huanli Dong Wenping Hu marie p. cifuentes Mark G. Humphrey Long Zhang Jianda Shao Chi Zhang China-Australia Joint Research Center for Functional Molecular Materials Scientific Research Academy Jiangsu UniversityZhenjiang 212013 China China-Australia Joint Research Center for Functional Molecular Materials School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China Key Laboratory of Materials for High-power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China School of physical Science and Technology Soochow University Suzhou 215006 China Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Research School of Chemistry Australian National University Canberra ACT2601 Australia

Axially coordinated metal-porphyrin-functionalized multi-walled carbon nanotube （MWCNT） nanohybrids were prepared via two different synthetic approaches （a one-pot 1,3-dipolar cycloaddition reaction and a stepwise approach that involved 1,3-dipolar cycloaddition followed by nucleophilic substitution）, and characterized through spectroscopic techniques. Attachment of the tin porphyrins to the surface of the MWCNTs significantly improves their solubility and ease of processing. These axially coordinated （5,10,15,20-tetraphenylporphyrinato）tin（Ⅳ）（SnTpp）- MWCNTs exhibit significant fluorescence quenching. The third-order nonlinear optical properties of the resultant nanohybrids were studied by using the Z-scan technique at 532 nm with both nanosecond and picosecond laser pulses. The results show that the nanohybrids exhibit significant reverse saturable absorption or saturable absorption when nanosecond or picosecond pulses, respectively, are employed. Improvement in the nanosecond regime nonlinear absorption is observed on proceeding to the nanohybrids and is ascribed to a combination of the outstanding properties of MWCNTs and the chemically attached metal-porphyrins.

关键词： metal-porphyrin axially coordinated multi-walled carbon nanotubes facile syntheses optical performance cycloaddition

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：