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author:

Xie, Pei (Xie, Pei.) [1] | Wang, Jin-Yun (Wang, Jin-Yun.) [2] | Huang, Ya-Zi (Huang, Ya-Zi.) [3] | Wu, Xue-Meng (Wu, Xue-Meng.) [4] | Chen, Zhong-Ning (Chen, Zhong-Ning.) [5]

Indexed by:

SCIE

Abstract:

Two heteroctanuclear Au4Ag4 cluster complexes of 4,5-diethynylacridin-9-one (H2L) were prepared through the self-assembly reactions of [Au(tht)(2)](CF3SO3), Ag(tht)(CF3SO3), H2L and PPh3 or PPh2Py (2-(diphenylphosphino)pyridine). The Au4Ag4 cluster consists of a [Au4L4](4-) and four [Ag(PPh3)](+) or [Ag(PPh2Py)](+) units with Au4L4 framework exhibiting a twisted paper clip structure. In CH2Cl2 solutions at ambient temperature, both compounds show ligand fluorescence at ca. 463 nm as well as phosphorescence at 650 nm for 1 and 630 nm for 2 resulting from admixture of (IL)-I-3 (intraligand) of L ligand, (LMCT)-L-3 (from L ligand to Au4Ag4) and (MC)-M-3 (metal-cluster) triplet states. Crystals or crystalline powders manifest bright yellow-green phosphorescence with vibronic-structured emission bands at 530 (568sh) nm for complex 1 and 536 (576sh) nm for complex 2. Upon mechanical grinding, yellow-green emission in the crystalline state is dramatically converted to red luminescence centered at ca. 610 nm with a drastic redshift of the emission after crystal packing is destroyed.

Keyword:

cluster gold heteronuclear luminescence mechanochromism silver

Community:

  • [ 1 ] [Xie, Pei]Fuzhou Univ, Coll Chem, Fuzhou 350108, Peoples R China
  • [ 2 ] [Chen, Zhong-Ning]Fuzhou Univ, Coll Chem, Fuzhou 350108, Peoples R China
  • [ 3 ] [Xie, Pei]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350100, Peoples R China
  • [ 4 ] [Wang, Jin-Yun]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350100, Peoples R China
  • [ 5 ] [Huang, Ya-Zi]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350100, Peoples R China
  • [ 6 ] [Wu, Xue-Meng]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350100, Peoples R China
  • [ 7 ] [Chen, Zhong-Ning]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350100, Peoples R China
  • [ 8 ] [Chen, Zhong-Ning]Fujian Sci & Technol Innovat Lab Optoelect Inform, Fuzhou 350108, Peoples R China

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Source :

MOLECULES

ISSN: 1420-3049

Year: 2022

Issue: 7

Volume: 27

4 . 6

JCR@2022

4 . 2 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:74

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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