Controlling Metallophilic Interactions in Chiral Gold(I) Double Salts towards Excitation Wavelength-Tunable Circularly Polarized Luminescence.

Yang, Jian-Gong; Li, Kai; Wang, Jian; Sun, Shanshan; Chi, Weijie; Wang, Chao; Chang, Xiaoyong; Zou, Chao; To, Wai-Pong; Li, Ming-De; Liu, Xiaogang; Lu, Wei; Zhang, Hong-Xing; Che, Chi-Ming; Chen, Yong

Yang, Jian-Gong; Li, Kai; Wang, Jian; Sun, Shanshan; Chi, Weijie; Wang, Chao; Chang, Xiaoyong; Zou, Chao; To, Wai-Pong; Li, Ming-De; Liu, Xiaogang; Lu, Wei; Zhang, Hong-Xing; Che, Chi-Ming; Chen, Yong.

Afiliación

Yang JG; Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Li K; University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
Wang J; Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P. R. China.
Sun S; Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun, 130023, P. R. China.
Chi W; Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Department of Chemistry, Shantou University, Shantou, 515031, P. R. China.
Wang C; Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.
Chang X; Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.
Zou C; Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
To WP; Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
Li MD; State Key Laboratory of Synthetic Chemistry & Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
Liu X; Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Department of Chemistry, Shantou University, Shantou, 515031, P. R. China.
Lu W; Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.
Zhang HX; Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
Che CM; Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun, 130023, P. R. China.
Chen Y; State Key Laboratory of Synthetic Chemistry & Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.

Angew Chem Int Ed Engl ; 59(17): 6915-6922, 2020 Apr 20.

Article en En | MEDLINE | ID: mdl-31989771

ABSTRACT

ABSTRACT

Materials exhibiting excitation wavelength-dependent photoluminescence (Ex-De PL) in the visible region have potential applications in bioimaging, optoelectronics and anti-counterfeiting. Two multifunctional, chiral [Au(NHC)2 ][Au(CN)2 ] (NHC=(4R,5R)/(4S,5S)-1,3-dimethyl-4,5-diphenyl-4,5-dihydro-imidazolin-2-ylidene) complex double salts display Ex-De circularly polarized luminescence (CPL) in doped polymer films and in ground powder. Emission maxima can be dynamically tuned from 440 to 530ânm by changing the excitation wavelength. The continuously tunable photoluminescence is proposed to originate from multiple emissive excited states as a result of the existence of varied AuI âââAuI distances in ground state. The steric properties of the NHC ligand are crucial to the tuning of AuI âââAuI distances. An anti-counterfeiting application using these two salts is demonstrated.

Palabras clave

anti-counterfeiting; aurophilicity; chiral N-heterocyclic carbenes; circularly polarized luminescence; excitation-dependent photoluminescence

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2020 Tipo del documento: Article