Exact mass analysis of sulfur clusters upon encapsulation by a polyaromatic capsular matrix.
Exact mass analysis of sulfur clusters upon encapsulation by a polyaromatic capsular matrix.
复制标题
DOI：
10.1038/s41467-017-00605-5
复制
发表时间：
2017-09-29
影响因子：
16.6
通讯作者：
Yoshizawa M
中科院分区：
文献类型：
--
作者：
Matsuno S;Yamashina M;Sei Y;Akita M;Kuzume A;Yamamoto K;Yoshizawa M
无机簇的结构测定在很大程度上依赖于质谱法，因为在大多数情况下，它们对核磁共振、紫外/可见光和红外分析的响应性较差。然而，低硫（Sn）是一种具有丰富同素异形体的独特簇，质谱分析通常显示其片段峰。在这里，我们报告了一个多芳香胶囊作为一个超分子矩阵的中性硫簇的质量测定。包封后，通过普通电喷雾电离飞行时间质谱分析，可以检测到包括环状S6和S8簇在内的主客体复合物的分子离子峰。此外，用同样的方法对由基质内两个S6团簇在光照射下原位制备的环状S12团簇进行了质谱分析。该基质不仅在质谱条件下，而且在环境溶液状态下，都能显著地稳定多芳壳中不稳定的S6和S12簇。无机硫团簇的结构通常用质谱（MS）来表征，但中性硫团簇在质谱条件下严重破碎，无法准确测定其质量。在这里，作者通过在离子超分子胶囊中稳定不稳定的环硫团簇，成功地对它们进行了质谱分析。
Structural determination of inorganic clusters relies heavily on mass spectrometry because of, in most cases, their poor responsivities toward nuclear magnetic resonance, ultraviolet/visible, and infrared analyses. Nevertheless, mass spectrometry analysis of oligosulfurs (Sn), which are unique clusters with copious allotropic forms, usually displays their fragment peaks. Here we report that a polyaromatic capsule acts as a supramolecular matrix for the mass determination of the neutral sulfur clusters. Upon encapsulation, molecular ion peaks derived from the host–guest complexes including cyclic S6 and S8 clusters are exclusively detected by common electrospray ionization time-of-flight mass spectrometry analysis. Furthermore, mass spectrometry analysis of a cyclic S12 cluster, which is in situ prepared from two S6 clusters within the matrix upon light irradiation, is achieved by the same way. The present matrix can remarkably stabilize the otherwise labile S6 and S12 clusters in the polyaromatic shell not only under mass spectrometry conditions but also in an ambient solution state. The structures of inorganic clusters are commonly characterized by mass spectrometry (MS), but neutral sulfur clusters heavily fragment under MS conditions, preventing their exact mass determination. Here, the authors successfully perform MS on labile cyclic sulfur clusters by stabilizing them within ionic supramolecular capsules.
登录
查看更多内容
影响因子：
15
作者：
Ohtsu, Hiroyoshi;Choi, Wanuk;Kawano, Masaki
通讯作者：
Kawano, Masaki
影响因子：
15
作者：
Dong, Vy M.;Fiedler, Dorothea;Raymond, Kenneth N.
通讯作者：
Raymond, Kenneth N.
三棱柱形 Cu(I) 和 Ag(I) 吡唑纳米笼主体：S8 和烃类客体的封装
影响因子：
4
作者：
Duan, Peng-Cheng;Wang, Zhao-Yang;Raptis, Raphael G.
通讯作者：
Raptis, Raphael G.
DOI：
10.1002/anie.199110241
发表时间：
1991-08-01
期刊：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH
影响因子：
--
作者：
CRAM, DJ;TANNER, ME;THOMAS, R
通讯作者：
THOMAS, R
影响因子：
56.9
作者：
Mal, Prasenjit;Breiner, Boris;Nitschke, Jonathan R.
通讯作者：
Nitschke, Jonathan R.