Agency for Science, Technology and Research

Nanyang Technological University

National University of Singapore

Zhikuan Chen

Kok Haw Ong

Jun Li

Beng Ong

Siew Lay Lim

Samarendra Pratap Singh

Prashant Sonar

Hoi Kai Ivy Wong

Ging Meng Ng

Yujun Zhao

Ivy Wong

Kang Yee Seah

Yuning Li

Wei Huang

Soo Jin Chua

Xu Li

Pooi See Lee

Ashok Kumar Mishra

Subodh Gautam Mhaisalkar

Siu Choon Ng

Yeng Ming Lam

Lixin Song

Ebinazar Benjamin Namdas

G Subodh Mhaisalkar

Andrew Grimsdale

Richard Yee Cheong Shin

Thomas Kietzke

Sundarraj Sudhakar

Richard Yee Cheong Shin Koy Sien

Achmad Zen

Changgua Zhen

Le Yang

Chun Huang

Omer E Ahmed Moawia

Lee Yang

Tommy Cahyadi

Alan Sellinger

There is provided p-type organic polymers of general formula I. The polymers may be useful as semi-conducting material. Thus, thin films and devices comprising such polymers are also provided.

P-type semiconducting polymers and related methods

A polymer comprises a polymeric chain represented by formula (I) or (II). In formula (I) a, b, d, and n are integers, a from 0 to 3, b from 1 to 5, c from 1 to 3, d from 1 to 5, and n from 2 to 5000; Rand Rare side chains; Rand Rare each independently H or a side chain; and when a is 0, Rand Rare side chains. In formula (II), a, b, c, d, e, and n are integers, a from 1 to 3, b and c being independently 0 or 1, d and e being independently 1 or 2, and n from 2 to 5000; Rand Rare side chains except &#x2014;COOalkyl; and X, Xand Xare independently O, S, or Se. Semiconductors and devices comprising the polymer are also provided. 

Polymeric semiconductors, devices, and related methods

There is presently provided compounds of formula (I), which are useful as p-type semiconductor materials and in devices comprising such p-type semiconductor materials. 

P-type materials and organic electronic devices

There is presently provided organic compounds of formula I, n-type acceptor materials derived from such compounds and devices comprising such n-type acceptor materials.(A-DA&#x2003;&#x2003;I

N-type materials and organic electronic devices

A polymer comprises a polymeric chain represented by formula (I) or (II). In formula (I), a, b, c, d, and n are integers, a from 0 to 3, b from 1 to 5, c from 1 to 3, d from 1 to 5, and n from 2 to 5000; Rand Rare side chains; Rand Rare each independently H or a side chain; and when a is 0, Rand Rare side chains. In formula (II), a, b, c, d, e, and n are integers, a from 1 to 3, b and c being independently 0 or 1, d and e being independently 1 or 2, and n from 2 to 5000; Rand Rare side chains except &#x2014;COOalkyl; and X, Xand Xare independently O, S, or Se. Semiconductors and devices comprising the polymer are also provided. 

There is provided conductive organic arylamine compounds. The compounds may be prepared as films and such films may be used as a hole transporting layer, an emissive layer or an electron transporting layer in organic light emitting devices.

Arylamine compounds and electronic devices

The invention provides novel luminescent poly(arylenevinylene) and poly(heteroarylenevinylene) polymers. The polymers of the invention may be prepared as films and such films may be used as an emissive layer in polymeric light emitting devices. In one embodiment, a bulky aryl group is attached at position (2) of at least one phenylene ring of a poly(phenylenevinylene) backbone. In another embodiment, the bulky aryl is attached at position 3 of at least one 5-membered heteroarylene ring of a poly(heteroarylenevinylene) backbone.

Poly(arylenevinylene) and poly(heteroarylenevinylene) light emitting polymer and polymer light-emitting devices

An organic compound represented by the following general formula (I) and characterized by the conjugation of thieno[3,2-b]thiophene, thiophene and phenylene units in the conjugated compound. 

Thienothiophene derivatives

A method for fabricating a sol-gel film composition for use in a thin film transistor is disclosed. The method includes fabricating the sol-gel dielectric composition by solution processing at a temperature in the range 60&#xb0; C. to 225&#xb0; C. The sol-gel film made by the method, and an organic thin-film transistor incorporating the sol-gel film are also disclosed.

Solution-processed inorganic films for organic thin film transistors

Water-soluble fluorescent particles are formed in a simple process. A mixture comprising a solvent, water, a fluorescent polymer dissolved in the solvent, and an amphiphilic molecule is provided. The fluorescent polymer comprises a hydrophobic segment. The amphiphilic molecule comprises hydrophilic and hydrophobic segments. The solvent is removed from the mixture to allow the fluorescent polymer and the amphiphilic molecule to entangle in the presence of water, thus forming the water-soluble fluorescent particles. In the formed particles, the hydrophilic segments of the amphiphilic molecule are entangled with one another, and the hydrophobic segments of the fluorescent polymer and amphiphilic molecule are entangled with one another. The amphiphilic molecule encapsulates the fluorescent polymer and at least some of the hydrophilic segments are exposed to render the particle soluble in water.

Water-soluble fluorescent particle comprising entangled fluorescent polymer and amphiphilic molecule

There is provided novel n-type conjugated compounds based on 2-vinyl-4,5-dicyanoimidazole moieties conjugated via the vinyl group to an aromatic moiety. Also provided are thin films and photovoltaics comprising the novel compounds, as well as methods of synthesizing the compounds.

N-type conjugated materials based on 2-vinyl-4,5-dicyanoimidazoles and their use in organic photovoltaics

Disclosed are compounds according to formula (I),wherein R' and R&#x2033; are selected from the group consisting of R&#x2032;=SiRRRand R&#x2033;=H; R&#x2032;=SiRRRand R&#x2033;=SiRRR; and R&#x2032;=ArSiRRRand R&#x2033;=ArSiRRR; R, R, R, R, R, and Rare independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloalkyl, cycloalkenyl, cycloalkynyl, arylalkyl, arylalkenyl, and arylalkynyl; Arand Arare independently selected from the group consisting of arylene, arylenealkylene, arylenealkynylene, heteroarylene, heteroarylenealkylene, heteroarylenealkenylene and heteroarylenealkylene; and n is at least 20. Such compounds may be used as an emissive layer in a polymer light-emitting diode (PLED), which itself may be used in electroluminescent devices.

Light-emitting polymers and polymer light-emitting diodes

Growing community of inventors

Singapore, Singapore

Zhikuan Chen