Aggregation-induced emission

Yongqiang Dong; Jacky Wing Yip Lam; Anjun Qin; Zhen Li; Jiaxin Sun; Hoi Sing Kwok; Ben Zhong Tang

doi:10.1117/12.679373

5 December 2006 Aggregation-induced emission

Yongqiang Dong, Jacky Wing Yip Lam, Anjun Qin, Zhen Li, Jiaxin Sun, Hoi Sing Kwok, Ben Zhong Tang

Proceedings Volume 6333, Organic Light Emitting Materials and Devices X; 63331D (2006) https://doi.org/10.1117/12.679373
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

New chromophoric molecules of 1,1-di(thiophen-2-yl)-2,3,4,5-tetraphenyl-silole (T₂TPS), 9-(diphenylmethylene)-9H-fluorene (DPMF), and tetraphenyletheneare (TPE) are designed and synthesized. When molecularly dissolved in common organic solvents, the molecules are practically nonemissive. Addition of poor solvents induces the molecules to aggregate, which turns the emission "on" and boosts their luminescence efficiencies dramatically ("aggregation-induced emission" or AIE). The photoluminescence (PL) of T₂TPS and TPE layers adsorbed on the TLC plates can be turned "off" and "on" continuously and reversibly by solvent exposure and evaporation. Transformation from amorphous phase to crystalline structure blue-shifts the PL spectrum of T₂TPS and enhances its intensity. A light-emitting devices (LEDs) device based on TPE is fabricated, which emits a blue light of 447 nm with a low turn-on voltage of 2.9 V.

Citation Download Citation

Yongqiang Dong, Jacky Wing Yip Lam, Anjun Qin, Zhen Li, Jiaxin Sun, Hoi Sing Kwok, and Ben Zhong Tang "Aggregation-induced emission", Proc. SPIE 6333, Organic Light Emitting Materials and Devices X, 63331D (5 December 2006); https://doi.org/10.1117/12.679373

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available