PMID- 25428080
OWN - NLM
STAT- MEDLINE
DCOM- 20150724
LR  - 20141127
IS  - 1873-0191 (Electronic)
IS  - 0928-4931 (Linking)
VI  - 33
IP  - 1
DP  - 2013 Jan 1
TI  - Towards the development of a novel bioinspired functional material: synthesis and 
      characterization of hybrid TiO2/DHICA-melanin nanoparticles.
PG  - 347-55
LID - S0928-4931(12)00426-2 [pii]
LID - 10.1016/j.msec.2012.08.049 [doi]
AB  - A large number of recent literature data focus on modification/modulation of 
      surface chemistry of inorganic materials in order to improve their functional 
      properties. Melanins, a wide class of natural pigments, are recently emerging as 
      a powerful organic component for developing bioinspired active material for a 
      large number of applications from organoelectronics to bioactive compounds. Here 
      we report the use of the approach referred as "chimie douce", involving in situ 
      formation of the hybrids through reactions of precursors under mild conditions, 
      to prepare novel hybrid functional architectures based on eumelanin like 5,6 
      dihydroxyindole-2-carboxylic acid (DHICA) polymer and TiO2. Two synthesis 
      procedures were carried out to get DHICA-melanin coated TiO2 nanoparticles as 
      well as mixed DHICA/TiO2 hybrid nanostructures. Such systems were characterized 
      through EPR, FT-IR and fluorescence spectroscopy, thermogravimetric analysis 
      (TGA), X-ray diffraction (XRD), and TEM microscopy in order to assess the effect 
      of synthesis path as well as of DHICA content on structural, morphological and 
      optical properties of TiO2 nanostructures. In particular, EPR, FT-IR spectra and 
      TGA analysis confirmed the presence of DHICA-melanin in these samples. TEM 
      measurements indicated the formation of the nanoparticles having relatively 
      narrow size distribution with average particle size of about 10nm. DHICA-melanin 
      does act as a morphological agent affecting morphology of hybrid nanostructures. 
      XRD analysis proved that TiO2 hybrid nanoparticles kept anatase structures for 
      DHICA-melanin contents within the range of investigated compositions, i.e. up to 
      50% wt/wt.
CI  - Copyright (c) 2012 Elsevier B.V. All rights reserved.
FAU - Pezzella, Alessandro
AU  - Pezzella A
AD  - Dept. of Chemical Sciences, Via Cintia 4, 80126 Napoli, Italy.
FAU - Capelli, Luigia
AU  - Capelli L
AD  - Dept. of Chemical Sciences, Via Cintia 4, 80126 Napoli, Italy.
FAU - Costantini, Aniello
AU  - Costantini A
AD  - Dept. of Materials and Production Engineering, Piazzale Tecchio 80, 80125 Napoli, 
      Italy.
FAU - Luciani, Giuseppina
AU  - Luciani G
AD  - Dept. of Materials and Production Engineering, Piazzale Tecchio 80, 80125 Napoli, 
      Italy. Electronic address: luciani@unina.it.
FAU - Tescione, Fabiana
AU  - Tescione F
AD  - Dept. of Materials and Production Engineering, Piazzale Tecchio 80, 80125 Napoli, 
      Italy.
FAU - Silvestri, Brigida
AU  - Silvestri B
AD  - Dept. of Materials and Production Engineering, Piazzale Tecchio 80, 80125 Napoli, 
      Italy.
FAU - Vitiello, Giuseppe
AU  - Vitiello G
AD  - Dept. of Chemical Sciences, Via Cintia 4, 80126 Napoli, Italy.
FAU - Branda, Francesco
AU  - Branda F
AD  - Dept. of Materials and Production Engineering, Piazzale Tecchio 80, 80125 Napoli, 
      Italy.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120905
PL  - Netherlands
TA  - Mater Sci Eng C Mater Biol Appl
JT  - Materials science & engineering. C, Materials for biological applications
JID - 101484109
RN  - 0 (Indoles)
RN  - 0 (Melanins)
RN  - 0 (dihydroxyindole-melanin)
RN  - 12627-86-0 (eumelanin)
RN  - 15FIX9V2JP (titanium dioxide)
RN  - D1JT611TNE (Titanium)
SB  - IM
MH  - Indoles/*chemistry
MH  - Melanins/*chemistry/metabolism
MH  - Microscopy, Electron, Scanning
MH  - Microscopy, Electron, Transmission
MH  - Nanoparticles/*chemistry/metabolism/ultrastructure
MH  - Spectroscopy, Fourier Transform Infrared
MH  - Thermogravimetry
MH  - Titanium/*chemistry
EDAT- 2013/01/01 00:00
MHDA- 2015/07/25 06:00
CRDT- 2014/11/28 06:00
PHST- 2011/12/31 00:00 [received]
PHST- 2012/07/26 00:00 [revised]
PHST- 2012/08/29 00:00 [accepted]
PHST- 2014/11/28 06:00 [entrez]
PHST- 2013/01/01 00:00 [pubmed]
PHST- 2015/07/25 06:00 [medline]
AID - S0928-4931(12)00426-2 [pii]
AID - 10.1016/j.msec.2012.08.049 [doi]
PST - ppublish
SO  - Mater Sci Eng C Mater Biol Appl. 2013 Jan 1;33(1):347-55. doi: 
      10.1016/j.msec.2012.08.049. Epub 2012 Sep 5.