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Design, Structure, and Optical Properties of Organic-Inorganic Perovskites Containing an Oligothiophene Chromophore.

Publication ,  Journal Article
Mitzi, DB; Chondroudis, K; Kagan, CR
Published in: Inorganic chemistry
December 1999

A quaterthiophene derivative, 5,5' "-bis(aminoethyl)-2,2':5',2' ':5' ',2' "-quaterthiophene (AEQT), has been selected for incorporation within the layered organic-inorganic perovskite structure. In addition to having an appropriate molecular shape and two tethering aminoethyl groups to bond to the inorganic framework, AEQT is also a dye and can influence the optical properties of lead(II) halide-based perovskites. Crystals of C(20)H(22)S(4)N(2)PbBr(4) were grown from a slowly cooled aqueous solution containing lead(II) bromide and quaterthiophene derivative (AEQT.2HBr) salts. The new layered perovskite adopts a monoclinic (C2/c) subcell with the lattice parameters a = 39.741(2) Å, b = 5.8420(3) Å, c = 11.5734(6) Å, beta = 92.360(1) degrees, and Z = 4. Broad superstructure peaks are observed in the X-ray diffraction data, indicative of a poorly ordered, doubled supercell along both the a and b axes. The quaterthiophene segment of AEQT(2+) is nearly planar, with a syn-anti-syn relationship between adjacent thiophene rings. Each quaterthiophene chromophore is ordered between nearest-neighbor lead(II) bromide sheets in a herringbone arrangement with respect to neighboring quaterthiophenes. Room temperature optical absorption spectra for thermally ablated films of the perovskites (AEQT)PbX(4) (X = Cl, Br, I) exhibit an exciton peak arising from the lead(II) halide sheets, along with absorption from the quaterthiophene moiety. No evidence of the inorganic sheet excitonic transition is observed in the photoluminescence spectra for any of the chromophore-containing perovskites. However, strong quaterthiophene photoluminescence is observed for X = Cl, with an emission peak at approximately lambda(max) = 532 nm. Similar photoluminescence is observed for the X = Br and I materials, but with substantial quenching, as the inorganic layer band gap decreases relative to the chromophore HOMO-LUMO gap.

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Published In

Inorganic chemistry

DOI

EISSN

1520-510X

ISSN

0020-1669

Publication Date

December 1999

Volume

38

Issue

26

Start / End Page

6246 / 6256

Related Subject Headings

  • Inorganic & Nuclear Chemistry
  • 3403 Macromolecular and materials chemistry
  • 3402 Inorganic chemistry
  • 0399 Other Chemical Sciences
  • 0306 Physical Chemistry (incl. Structural)
  • 0302 Inorganic Chemistry
 

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Mitzi, D. B., Chondroudis, K., & Kagan, C. R. (1999). Design, Structure, and Optical Properties of Organic-Inorganic Perovskites Containing an Oligothiophene Chromophore. Inorganic Chemistry, 38(26), 6246–6256. https://doi.org/10.1021/ic991048k
Mitzi, David B., Konstantinos Chondroudis, and Cherie R. Kagan. “Design, Structure, and Optical Properties of Organic-Inorganic Perovskites Containing an Oligothiophene Chromophore.Inorganic Chemistry 38, no. 26 (December 1999): 6246–56. https://doi.org/10.1021/ic991048k.
Mitzi DB, Chondroudis K, Kagan CR. Design, Structure, and Optical Properties of Organic-Inorganic Perovskites Containing an Oligothiophene Chromophore. Inorganic chemistry. 1999 Dec;38(26):6246–56.
Mitzi, David B., et al. “Design, Structure, and Optical Properties of Organic-Inorganic Perovskites Containing an Oligothiophene Chromophore.Inorganic Chemistry, vol. 38, no. 26, Dec. 1999, pp. 6246–56. Epmc, doi:10.1021/ic991048k.
Mitzi DB, Chondroudis K, Kagan CR. Design, Structure, and Optical Properties of Organic-Inorganic Perovskites Containing an Oligothiophene Chromophore. Inorganic chemistry. 1999 Dec;38(26):6246–6256.
Journal cover image

Published In

Inorganic chemistry

DOI

EISSN

1520-510X

ISSN

0020-1669

Publication Date

December 1999

Volume

38

Issue

26

Start / End Page

6246 / 6256

Related Subject Headings

  • Inorganic & Nuclear Chemistry
  • 3403 Macromolecular and materials chemistry
  • 3402 Inorganic chemistry
  • 0399 Other Chemical Sciences
  • 0306 Physical Chemistry (incl. Structural)
  • 0302 Inorganic Chemistry