A pre-organized monomer-reservoir strategy to prepare multidimensional phosphorescent organoplatinum nanocrystals and suprastructures  

作　　者：Rui Li Zhong-Liang Gong Qijian Zhu Meng-Jia Sun Yanke Che Jiannian Yao Yu-Wu Zhong 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Photochemistry,CAS Research/Education Center for Excellence in Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Chemistry》2022年第2期328-338,共11页中国科学（化学英文版）

基　　金：supported by the National Science Fund for Distinguished Young Scholars(21925112);the National Natural Science Foundation of China(22090021,21601194,21872154);Beijing Natural Science Foundation(2191003)。

摘　　要：The preparation of multidimensional nano-and microstructures,in particular suprastructures with well-defined morphology and bright emissions,is a challenging task in supramolecular assembly.For this purpose,a new type of amphiphilic diplatinum complexes is presented as an excellent building block to assemble into highly phosphorescent nanofibers by supramolecular Pt…Pt interactions.These organoplatinum supramolecular fibers are further used as a pre-organized monomer reservior for the metal ion-triggered post-transformation into crystalline nanoneedles,nanorods,nanobunches,microplates,and microflowers with controllable morphology and bright phosphorescence.A reverse transformation of the obtained nanorods into nanofibers is demonstrated with the aid of ethylenediamine tetraacetic acid.In contrast,the direct treatment of diplatinum complexes with different metal ions fails to give well-defined nano and microstructures,suggestive of the pre-organized role of nanofibers for the morphological transformation.Preliminary applications of these nano-and suprastructures in sensing temperature and organic vapours by emission signal changes are demonstrated.In contrast to the conventional hierarchical assembly,the pre-organized monomer-reservoir strategy disclosed in this study offers a versatile method for the synthesis of organic nano and suprastructures with multidimensional morphology and controllable emission properties.

关 键 词：self-assembly nanostructures PHOSPHORESCENCE amphiphilic molecules platinum complexes 

分 类 号：O641.3[理学—物理化学] TB383.1[理学—化学]