Tag Archives: organic

Look, you can’t see them: Programmable transparent organic luminescent tags

Today, our recent work on biluminescent organic materials is published in Science Advances. In this publication, we report luminescent tags made from organic molecules embedded in polymer films showing biluminescence at room temperature. They allow for high-resolution (>700 ppi) writing, erasing, and re-writing by light alone, thus, in a non-contact way. Using focussed light or light patterns for writing, any image can be programmed in such a system. Those tags are invisible until a short light flash makes the images readable.

We call those systems:

programmable luminescent tags or PLTs in short

Some details:

  • Whenever you see a PLT from our lab with a QR code – they do work*!
  • An example of our PLTs is on the cover of the February issue of  Science Advances
  • Follow us on twitter (@LEXOS_lab) to see some more examples in the coming days and weeks

For details, see the paper below:

M. Gmelch, H. Thomas, F. Fries, S. Reineke, Programmable transparent organic luminescent tags. Sci. Adv. 2019; 5 : eaau7310.

[*may require a very good QR-reader, as some images show the tags under odd angles]


Afternoon Session: Excitons in Organic and Hybrid Systems II

This afternoon, we are progressing with the general scheme of topics with the session EP1.5 Excitons in Organic and Hybrid Systems II of our Symposium EP1. Important: We have one additional speaker in the afternoon: Klaus Meerholz – his talk got shifted from Friday to this session. The following topics we will see:

  • NIR EL from surface plasmons
  • Area light-emitting transistors
  • Multiple FRET pathways
  • Topological phases in organic materials
  • Manipulating Excitons with plasmonic nanoantennas
  • Singlet exciton fission
  • Real time exciton diffusion mapping
  • Organic memory devices

Our invited speakers for the afternoon are Jana Zaumseil, Joel Yuen-Zhou, Gleb M. Akselrod, and Klaus Meerholz.

See you in a bit!

Call for Papers: Solid State and Organic Lighting (SOLED) in China 2015

As a member of the program committee, it is my pleasure to announce the Call for Papers for the Solid State and Organic Lighting (SOLED) Conference in Suzhou, China 2015. The deadline for abstract submission is 7 July 2015 12:00 EDT. The SOLED will take place from 02 – 05 November 2015. It will be a great conference, bringing together the key experts in the field. Keynote speakers include Stephen Forrest, University of Michigan, USA and Jung Han, Yale University, USA.

Two open PhD positions in the field of organic photonics and excitonics

Currently, I am looking for talented students who are interested in joining my research group in Dresden, Germany, at the Technische Universität Dresden to pursue their PhD studies. There are two positions open right now, for a 3-year appointment each. The positions should be filled to the earliest possible time.

Everybody interested in the field of organic photonics and excitonics is welcome to apply. Please directly contact me either following the respective instructions on the call (english version, german version) or directly (reineke [at] iapp.de).

MRS Fall 2013: Kick-off your week with a tutorial

As a part of our Symposium N (Functional Aspects of Luminescent and Photoactive Organic and Soft Materials), in a joint effort with the organizers of Symposium Q (Organic Microlasers–From Fundamentals to Device Application), we offer a tutorial to start the exciting week of research: Tutorial N/Q: Organic Optoelectronics – Introduction to Materials and Device Physics. We a delighted that we are having two experts in the field, Prof. Mark E. Thompson and Prof. Wolfgang Bruetting, giving this introduction. The tutorial will start at Sunday, December 1, 1:30pm until 5pm that day. Location: Hynes Convention Center, Level 2, Room 203. We are all looking forward to this event and would like to invite everyone interested to come. Please spread the word.

New paper published: Selective ammonia sensing using fluorescent metal organic frameworks

In a paper recently published in Journal of the American Chemical Society (Selective Turn-On Ammonia Sensing Enabled by High-Temperature Fluorescence in Metal–Organic Frameworks with Open Metal Sites), we show that highly fluorescent metal organic frameworks (MOFs) can be used to selectively sense ammonia at high temperatures. The work is lead by Mircea Dincă (Dincă group), professor at the MIT Chemistry Department. This has been a fun and interesting collaboration, which I’d like to pursue in the future.