染料分子在MOF孔道中的取向组装:偏振的多光子泵浦微腔激光
详细信息    查看官网全文
摘要
具有高偏振度的多光子泵浦激光由于兼具偏振光和多光子泵浦激光的优势因而在医学成像等生物光子学领域有着重要的应用前景~[1,2]。然而,由于现有激光增益材料难以同时满足大的多光子吸收截面和激射效率以及高度一致的取向性等要求,目前仍无法获得高偏振度的多光子泵浦激光。我们创新性地提出在金属-有机框架材料的孔道中取向组装有机激光染料来获得高偏振度多光子泵浦激光的设计思路:采用锌离子与多齿有机配体7-(4-羧基苯基)-3-羧基-喹啉配位合成了具有一维孔道的金属-有机框架材料ZJU-68,并利用孔道的限域作用原位高度取向组装有机激光染料分子,同时利用框架材料单晶的天然晶面作为谐振腔的反射镜面,获得了高偏振度(大于99.9%)的多光子泵浦激光。
To make use of the uniqueness of both polarization and multiphoton excitation~([1,2]),the polarized multi-photon pumped laser in single microcrystal is potentially useful for biological imaging,but has never been realized.The daunting challenge is that the existing laser gain material is difficult to simultaneously satisfy requirements of large multi-photon absorption cross section,high lasing efficiency and highly consistent orientation.We innovatively put forward the design idea of in situ oriented assembling dye molecules in MOF Channels to solve these difficulties:highly efficient pore confinement of ZJU-68 for highly orienting DMASM dye molecules,and suitable refraction index as well as perfect crystal morphology have enabled us to target the first example of polarized multi-photon-pumped laser in single solid-state microcrystal(degree of polarization > 99.9%).
引文
[1]Jameson,D.M.;Ross,J.A.;Chem.Rev.2010,110:2685.
    [2]He,G.S.;Tan,L.S.;Zheng,Q.;Prasad,P.N.;Chem.Rev.2008,108:1245.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700