Dr. Wei Shao''s paper appears in Scientific Reports, No. 140 paper of our group (Sci. Rep.2014, 4, 6387)
Touching polymer chains by organic field-effect transistors
Wei Shao1,4, Huanli Dong1, Zhigang Wang2* & Wenping Hu1,3*
1Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Organic
Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing
100190, China, 2Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University
of Science and Technology ofChina, Hefei, Anhui 230026, China,
3Department of Chemistry, School of Science, Tianjin University and
Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), Tianjin 300072, China, 4Samsung R&D Institute China -
Beijing (SRC-Beijing), Beijing 100028, China.
Sci. Rep. 4, 6387; DOI:10.1038/srep06387 (2014).
http://www.nature.com/srep/2014/140917/srep06387/full/srep06387.html
Organic field-effect transistors (OFETs) are used to directly “touch”
the movement and dynamics of polymer chains, and then determine T
g.
As a molecular-level probe, the conducting channel of OFETs exhibits
several unique advantages: 1) it directly detects the motion and
dynamics of polymer chain at T
g; 2) it allows the
measurement of size effects in ultrathin polymer films (even down to
6 nm), which bridges the gap in understanding effects between surface
and interface. This facile and reliable determination of T
g of polymer films and the understanding of polymer chain dynamics guide a
new prospect for OFETs besides their applications in organic
electronics and casting new light on the fundamental understanding of
the nature of polymer chain dynamics.