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author:

Yu Wen-Si (Yu Wen-Si.) [1] | Huang Chun-Hua (Huang Chun-Hua.) [2] | Huang Xi-He (Huang Xi-He.) [3] (Scholars:黄细河)

Indexed by:

SCIE CSCD

Abstract:

Treatment of bis(diphenylphosphino)methane (dppm) and 2-(diphenylphosphanyl)pyridine (dpppy) with Cu(CH3CN)(4)BF4 afforded a dinuclear Cu(I) complex [Cu-2(dpppy)(2)(dppm)(CH3CN)](BF4)(2)center dot 3CH(2)Cl(2) (1). Complex 1 was structurally characterized by X-ray single-crystal analysis and its photophysical properties were studied in detail. It crystallizes in triclinic space group P (1) over bar with a = 13.0834(8), b = 13.5568(8), c = 21.8544(11) angstrom, alpha = 76.090(5)degrees, beta = 80.803(5)degrees, gamma = 64.582(6)degrees, V = 3391.3(3) angstrom(3), Z = 2, M-r = 1507.42, D-c = 1.476 g/cm(3), F(000) = 1532, GOOF = 1.071, the final R = 0.0700 for 9041 observed reflections with I > 2 sigma(I) and wR = 0.2063 for all data. The complex contains a Cu-2-core structure surrounded by one dppm and two dpppy ligands in a head-to-head arrangement. In the crystalline phase, complex 1 exhibits bright bluish-green photoluminescence (lambda(max) = 488 nm) with high quantum yield (phi = 0.57) at room temperature. It is still a relatively high emission quantum yield (phi = 0.36) in doped PMMA thin film with 20 wt% dopant of complex 1. The emission peaks of 1 in dichloromethane solution and doped PMMA (20 wt%) thin films are 510 and 494 nm, respectively, showing a very slight bathochromic shift compared to that in crystalline phase. This phenomenon might be attributed to its rigid conformation that precludes the possible distortion of copper centers in the excited state.

Keyword:

copper(I) complex crystalline structure thermally activated delayed fluorescence

Community:

  • [ 1 ] [Yu Wen-Si]Fuzhou Univ, Coll Chem, Inst Opt Crystalline Mat, Fuzhou 350116, Peoples R China
  • [ 2 ] [Huang Chun-Hua]Fuzhou Univ, Coll Chem, Inst Opt Crystalline Mat, Fuzhou 350116, Peoples R China
  • [ 3 ] [Huang Xi-He]Fuzhou Univ, Coll Chem, Inst Opt Crystalline Mat, Fuzhou 350116, Peoples R China

Reprint 's Address:

  • 黄细河

    [Huang Xi-He]Fuzhou Univ, Coll Chem, Inst Opt Crystalline Mat, Fuzhou 350116, Peoples R China

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Source :

CHINESE JOURNAL OF STRUCTURAL CHEMISTRY

ISSN: 0254-5861

CN: 35-1112/TQ

Year: 2021

Issue: 2

Volume: 40

Page: 175-181

0 . 8 4 7

JCR@2021

5 . 9 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:117

JCR Journal Grade:4

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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