Nowadays, Solid-state emissive fluorophores are very important because of its versatile applications in the field of organic/polymeric light-emitting diodes (OLEDs/PLEDs), solid-state lasers ultrasensitive sensors, organic, etc. But due to aggregation caused quenching (ACQ) effect, the synthesis of this solid-state emissive fluorophores is a challenging work. Therefore, to have solid-state emissive materials, we have to suppress the ACQ effect. Apart from this, solid-state emissive or aggregate state emissive organic fluorophores in red region is still challenging. Among many fluorophores, red emitting materials have also acquired a promising importance in white light emission as red is one of the three primary colours. Besides, the π-conjugated systems which emits in the red and NIR regions have advantages in bio-imaging, laser printers, plasma panel displays, optical disks and heat absorbers etc. Herein, we have designed and synthesised two Donor-Accepter (D-A) type conjugated polymers, P-1 and P-2 having emission in near red region via Suzuki-coupling reaction with (1Z, 3Z)-1,4-diphenyl-1,3-butadiene as donor moiety and fluorenone, fumaronitrile as accepter units. These polymers have been characterised with the help of NMR, GPC, MALDI-TOF, IR etc. The HOMO, LUMO energies and optical band gaps have been estimated via electrochemical method. The absorption and emission studies performed in both solution and solid state have indicated that these polymers are highly emissive in solution as well as in solid state in near red region. Both the polymers exhibit solvatochromic property. The average fluorescence lifetimes in both states are measured using TCSPC technique. Interestingly the polymer, P-2 shows the Aggregation Induced Emission (AIE) behaviour in THF/Water mixture. Because of emissive nature in solid state, this type of polymers may be useful as emissive layer in OLEDs/PLEDs devices.

Design and Synthesis of Solid-state Red Emissive Polymers Prasanta Pal, Ayan Datta and Sudip Malik*

In order to view the entire gallery of posters, videos, and other materials, please click "Submissions" below. 

To find the Q&A for each poster category, please click "Sessions" below. 

To ask a question, simply click on the session of interest. You will see a list of video presentations to the right. Below each video area, you'll see a section entitled 'Q&A for this presentation'. Here you can post questions to the presenters. They will be notified, and you'll also be notified when they reply to your question. You can expect that notification by email, and you'll find the author's response here.

27th CRSI National Symposium in Chemistry

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.