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Dear All,<br>
<br>
Here are details of two talks on Nov 2nd in the Chemistry Dept. that
may be of interest.<br>
<br>
Regards,<br>
<br>
Rob<br>
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<td>Re: update: 2nd November, TG 703 Time 9.30 -10.30 AM</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Mon, 22 Oct 2012 21:08:25 +0100</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Anto Regis Inigo <a class="moz-txt-link-rfc2396E" href="mailto:anto.inigo@strath.ac.uk"><anto.inigo@strath.ac.uk></a></td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td>Robert Martin <a class="moz-txt-link-rfc2396E" href="mailto:r.w.martin@strath.ac.uk"><r.w.martin@strath.ac.uk></a></td>
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<div><font color="#000000" face="Times New Roman" size="3">Hi
Rob, </font></div>
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<div dir="ltr"><font face="times new roman" size="3">We
will have two lectures on 2nd November at TG 703
(</font><font face="times new roman" size="3">9.30
- 10.30 AM) given by visitors to our
group. Titles and abstracts are given below.
Could you please circulate this to your group
members if this is of interest to you? </font></div>
<div dir="ltr"> </div>
<div dir="ltr"><strong>9.30 - 10.00 AM</strong></div>
<div dir="ltr"><font face="Times New Roman" size="3">Dispersion
Polymerization of Monodisperse Conjugated
Polymer Particles</font></div>
<div dir="ltr"><font size="3"><font face="Times New
Roman"><strong>Dr. Alexander J.C. Kuehne</strong>,
Research Group Leader, Interactive Materials
Research, DWI an der RWTH Aachen e.V.<br>
Forckenbeckstraße 50, </font></font><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><a
moz-do-not-send="true"
href="http://www.dwi.rwth-aachen.de/"
target="_blank"><font face="Times
New Roman" size="3">www.dwi.rwth-aachen.de</font></a></font></font></font></font></font></font></font><br>
<br>
<font face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3">Monodisperse</font></font></font></font></font></font></font> particles
are a powerful means to self-assemble
superstructures with applications in optical and
photonic devices. I will talk about the
synthesis of such particles made entirely from
conjugated polymers, thus having the same
properties as the neat material but with added
structural definition. The monodisperse
particles self-assemble into photonic crystals
upon drying of the dispersion medium and exhibit
a distinct photonic stop-gap while retaining
their photoluminescent properties. Furthermore,
these particles can be processed and deposited
from polar solvents such as alcohols and water,
which renders the materials and processes
environmentally more friendly and sustainable.
<br>
</font></div>
<div dir="ltr"><font face="Times New Roman" size="3"><strong></strong></font> </div>
<div dir="ltr"><font face="Times New Roman" size="3"><strong></strong></font> </div>
<div dir="ltr"><font face="Times New Roman" size="3"><strong><font
face="times new roman">10.00 - 10.30 AM</font><br>
</strong></font><font face="Times New Roman"
size="3">Intermediate State Charge Transport in
Multilevel Photochromic
</font><font face="Times New Roman" size="3">Light-Emitting
Memory Devices</font>
</div>
<p dir="ltr"><font face="Times New Roman" size="3"><strong>R.
Clayton Shallcross</strong><strong>,
</strong></font></p>
<p dir="ltr"><font face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3">Universität</font></font></font> zu
Koln, Department of Chemistry</font></p>
<font face="Times New Roman" size="3">
<p dir="ltr" align="left"> </p>
</font>
<div dir="ltr"><font face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3"><font
face="Times New Roman" size="3">Dithienylethenes</font></font></font>
(DTEs) represent an exceptional class of
thermally stable and fatigue
resistant photochromic molecular switches that
undergo a change in both their UV-visible
absorption and frontier orbital energy levels
due to a photo- and/or electrically-induced
ring-opening and -closing reaction, which may be
exploited in electrically-addressed nonvolatile
organic memory devices. Here, we present a
multifunctional light-emitting organic memory
(LE-OMEM) diode employing a DTE transduction
layer that affords the ability for both optical
and electrical writing and readout. Optimized
LE-OMEM diodes show impressive ON/OFF ratios
(OORs) for both electroluminescence (EL) and
current readout of ca. 10^4 for optical
switching and ca. 10^3 for electrical switching.
By systematically controlling the fraction of
closed isomers in the transduction layer (X),
both optical and electrical writing protocols
demonstrate the ability to write a continuum of
states (i.e. levels) between totally OFF and ON
(see figure in attached pdf), offering an
alternative technology for increased data
storage density compared to typical binary
memory cells. We elucidate the difference in the
molecular-scale mechanisms that are responsible
for the optically and electrically-driven memory
effect and discuss the charge transport
properties of these intermediate states.
Furthermore, we present results for integration
of LE-OMEM diodes into a prototype passive
memory array and discuss the device design
considerations as well as the number of
statistically discernable grey levels per pixel.</font></div>
<div dir="ltr"> </div>
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</font>
<div dir="ltr"><font face="Tahoma" size="2"><font
face="tahoma" size="2">
<div dir="ltr"><font face="tahoma" size="2">Regards,</font></div>
<div dir="ltr"> </div>
</font></font>
<div dir="ltr"><font face="Tahoma" size="2"><font
face="tahoma" size="2"><font face="tahoma"
size="2"><font face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma" size="2"><font
face="tahoma"
size="2"><font
face="tahoma"
size="2"><font
face="tahoma"
size="2"><font
face="tahoma"
size="2"><a
moz-do-not-send="true"><font
face="tahoma"
size="2">Inigo</font></a></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></div>
<div dir="ltr"><font face="tahoma">
<p style="MARGIN: 0cm 0cm 0pt"
class="MsoNormal"><b><span
style="FONT-FAMILY:
'Arial','sans-serif'; COLOR: #333333;
FONT-SIZE: 9pt" lang="EN-US"><a
moz-do-not-send="true"
href="http://www.researcherid.com/rid/G-2059-2012"
target="_blank"><font
color="#0099ff">http://www.researcherid.com/rid/G-2059-2012</font></a>
</span></b><b><u><span style="FONT-SIZE:
14pt" lang="EN-US"></span></u></b></p>
</font></div>
<div dir="ltr"><font face="tahoma">*********************</font></div>
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<div dir="ltr"><font face="tahoma" size="2">Research
Associate<br>
Prof Peter Skabara's Group<br>
Department of Pure and Applied Chemistry<br>
University of Strathclyde<br>
Thomas Graham Building<br>
295 Cathedral Street<br>
Glasgow<br>
G1 1XL</font></div>
<div dir="ltr">
<p class="MsoNormal"><span style="FONT-FAMILY:
'Arial','sans-serif'; COLOR: black;
FONT-SIZE: 10pt">Tel. +44 (0)141 548 5805</span></p>
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<pre class="moz-signature" cols="72">--
===============================================================
Professor Robert Martin
Head of Department,
Department of Physics, tel: 0141-5483132
Strathclyde University, fax: 0141-5522891
John Anderson Building, e-mail: <a class="moz-txt-link-abbreviated" href="mailto:r.w.martin@strath.ac.uk">r.w.martin@strath.ac.uk</a>
Glasgow, U.K.
G4 0NG
The Department is a partner in SUPA, the Scottish Universities Physics Alliance
The University of Strathclyde is a charitable body, registered in Scotland, number SC015263
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