Issue 11, 2012
From the journal:

CrystEngComm

Luminescent nanoparticles from tripeptide–CdS conjugate†

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

Self-assembly of two synthetic tripeptides containing ω-amino acids and α-aminoisobutyric acid is used to fabricate luminescent nanoparticles by doping with CdS quantum dots. The X-ray crystallography reveals that both the peptides exhibit an unusual turn structure in the solid state where N-terminal γ-aminobutyric acids prefer to adopt a gauche–gauche conformation. In higher order assembly, these peptides form a continuous hydrogen-bonded four-member nanoporous architecture. From methanol solution, the peptides form polydisperse nanospheres. The field emission scanning electron micrographs (FE-SEM) show that the average size of the nanospheres is in the range of 25 to 30 nm. Moreover, these peptide nanospheres can be efficiently doped with CdS quantum dots and exhibit optoelectronic properties.

Graphical abstract: Luminescent nanoparticles from tripeptide–CdS conjugate

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Article information

DOI
https://doi.org/10.1039/C2CE05786G
Article type
Paper
Submitted
24 Jun 2011
Accepted
21 Mar 2012
First published
25 Apr 2012

CrystEngComm, 2012,14, 4034-4040

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Luminescent nanoparticles from tripeptide–CdS conjugate

S. K. Maity, S. Maity, P. Jana and D. Haldar, CrystEngComm, 2012, 14, 4034 DOI: 10.1039/C2CE05786G

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