Issue 9, 2012
From the journal:

CrystEngComm

CdS quantum dots doped with a peptide matrix: structural and photoelectrochemical properties†

Suman Kumar Maity,a   Sibaprasad Maity,a   Poulami Janaa  and  Debasish Haldar*a  

* Corresponding authors

a Department of Chemical Sciences, Indian Institute of Science Education and Research–Kolkata, Mohanpur, West Bengal, India
E-mail: deba_h76@yahoo.com, deba_h76@iiserkol.ac.in
Fax: +91-34-73 279131
Tel: +91-34-73 279130

Abstract

Luminescent CdS quantum dots have been embedded on the tapes or matrices obtained by the self-assembly of two synthetic short peptides. The X-ray crystallography reveals that both the peptides exhibit a turn-like structure in the solid state and form an intermolecular hydrogen bonded dimer. In higher order assembly, the tripeptide forms a β-sheet like structure by noncovalent interactions. The dipeptide analogue forms a rhombus like 2D matrix in higher order packing through intermolecular hydrogen bonding and π-stacking interactions. Moreover, these self-assembled peptides are used to immobilize luminescence CdS quantum dots. Photoluminescence measurement of the CdS–peptide 1 quantum dots shows a considerably enhanced emission intensity compared to the CdS–peptide 2 conjugate which shows a little increase compared with free CdS.

Graphical abstract: CdS quantum dots doped with a peptide matrix: structural and photoelectrochemical properties

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Supplementary files

Article information

DOI
https://doi.org/10.1039/C2CE06355G
Article type
Paper
Submitted
12 Oct 2011
Accepted
07 Feb 2012
First published
28 Feb 2012

CrystEngComm, 2012,14, 3156-3162

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CdS quantum dots doped with a peptide matrix: structural and photoelectrochemical properties

S. K. Maity, S. Maity, P. Jana and D. Haldar, CrystEngComm, 2012, 14, 3156 DOI: 10.1039/C2CE06355G

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