TY - JOUR
T1 - Effect of sample preparation and excitation conditions on the single molecule spectroscopy of conjugated polymers
AU - Lee, Young Jong
AU - Kim, Doo Young
AU - Barbara, Paul F.
PY - 2006/5/25
Y1 - 2006/5/25
N2 - Extensive new single molecule spectroscopy (SMS) data on the conjugated polymer MEH-PPV at low temperature were obtained. In particular, the combined effects of sample preparation and excitation condition were explored in detail. The data confirm previous observations from this laboratory that (i) the distribution of emission maxima of single MEH-PPV molecules has a bimodal distribution and (ii) the single molecule emission spectrum of MEH-PPV exhibits few time-dependent fluctuations of the emission intensity, band, shape, or spectral maxima. These data also help explain the discrepancy among the various published SMS data on this compound and suggest that environmental impurities, long irradiation times, nearby interfaces, and incomplete data sampling may account for some of the discrepancies among the published data.
AB - Extensive new single molecule spectroscopy (SMS) data on the conjugated polymer MEH-PPV at low temperature were obtained. In particular, the combined effects of sample preparation and excitation condition were explored in detail. The data confirm previous observations from this laboratory that (i) the distribution of emission maxima of single MEH-PPV molecules has a bimodal distribution and (ii) the single molecule emission spectrum of MEH-PPV exhibits few time-dependent fluctuations of the emission intensity, band, shape, or spectral maxima. These data also help explain the discrepancy among the various published SMS data on this compound and suggest that environmental impurities, long irradiation times, nearby interfaces, and incomplete data sampling may account for some of the discrepancies among the published data.
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U2 - 10.1021/jp056727x
DO - 10.1021/jp056727x
M3 - Article
C2 - 16706417
AN - SCOPUS:33745778080
SN - 1520-6106
VL - 110
SP - 9739
EP - 9742
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
IS - 20
ER -