Organic-based Hybrid Nanostructures

PTh NT S n S n

CH3

P3MT NT S n

C4H9

P3BT NP P3MT-NT/Au-NPs

P3MT P3BT P3MT-NT/Au-NPs P3BT NPs

Polypyrrole/Ni (PPy-Ni) Hybrid Double Layered Nanotubes (HDLNTs)

Sequential Electrochemical Deposition Method

Ref.) D. H. Park, J. Joo et al., Appl. Phys. Lett. 90, 93122 (2007)

Confirm the hybrid nanotubes of PPy/Ni

Diameter : ~200 nm

Thickness of wall : PPy ~ 10 nm, Ni ~ 10 nm

Ordered magnetic anisotropy with an easy axis of magnetization along the parallel direction of the HDLNTs of PPy/Ni

Bright Light Emission of PTh/metals Hybrid NTs

Diameter : ~ 200 nm, Wall thickness : 10 nm, Length : 40 m

Ref.) J. Joo, D. H. Park et al., Adv. Mater. 19, 2824 (2007)

Enhancement of PL intensity(~100 times) through nanoscale metal

coating on PTh NT due to surface plasmon resonance

Cu PTh

100 nm

100 nm

PTh

Cu

5 nm

PTh/Cu

Cu

S n

PTh/CuPTh

Simultaneous

measurement

Charge Transfer Effect in SPR coupling by using Doped-Polymer/Metal Hybrid NTs

1.4 1.6 1.8 2.0 2.2 2.40

50

100

150

200

250

300

350

1.4 1.6 1.8 2.0 2.2 2.40

2

4

6

8

10

12

14 Doped-P3MT NTs

PL

Inte

nsi

ty (

Arb

. Un

it)

Energy (eV)

Quantum Yield UV/Vis absorption spectra

Ref.) D. H. Park, J. Joo, et al., Advanced Functional Materials, vol. 18, p.2526 (2008).

LCM PL intensity decreased with increasing doping level of P3MT NTs LCM PL intensity increased with increasing doping level of P3MT/Ni HDLNTs LCM PL intensity increased up to ~350 times

■ Doped-P3MT(0.67) NTs● Doped-P3MT(0.52) NTs▲ Doped-P3MT(0.25) NTs▼ Doped-P3MT(0.04) NTs

Color CCD images

Light-Emitting MEH-PPV and MEH-PPV/Au Hybrid NPs

MEH-PPV NPs MEH-PPV/Au NPs

500 600 700 800

0

10

20

30

PL

(A

rb. U

nit

)

Wavelength (nm)

λex = 488 nm

MEH-PPV/Ausingle NP

MEH-PPVsingle NP

LCM PL spectra

~ 30 times enhancement of PL peak of MEH-PPV/Au hybrid single NPs

LCM PL images

Ref.) M. S. Kim, J. Joo et al. ACS Nano 3, 1329(2009)

Reprecipitation Method

Au NPs

MEH-PPVNP

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

SSS

S

S SAu

SSS

S

S

S S

S

Au

SSS

S

S

S S

S

Au

Au

S S

S

S

SS

S

S

S

S

Au

Alternating Electrochemical Polymerization Method (P3BT-PEDOT NW compartments)

Ref) D. H. Park, J. Joo, et al., ACS Nano, vol.4, p.5155 (2010).

SEM

LCM Raman

Color CCD

LCM PL

P3BT

PEDOT

22 NW compartments

Light-Emitting Color Barcode NWs (LECB-NWs)