Organic Functional Materials
Chirality , derived from the Greek ¦Ö¦Å¦É¦Ñ (kheir), "hand", means that an object is distinguishable from its mirror image, that is, it cannot be supposed onto it. A chiral object and its mirror image are called enantiomorphs (Greek, "Opposite forms") or, when referring to molecules, enantiomers.
Chiral supramolecules which are capable of forming chiral functional meterials in different levels could generate chiral amplification via self-assemble technology to independent chiral molecular unit. Based on chiroptical monomer binaphthol (BINOL), binaphyladiamine (BINAM), diaminocyclohexane (DACH) et al, our group assemble functional chiral micromolecular and macromolecular materials or devices by studying the relationship between structure and performance of chiral polymer on molecular size, with reasonable synthetic methods utilized.
Compared to traditional organic molecular, the "wire-like" delocalized ¦Ð-electrons of conjugated polymer are able to amplify and improve performance by transferring electrons or energy along the rigid conjugated skeleton of D-¦Ð-A structure. For instance, it is possible to take control of photoelectric properties by introducing varieties of functional groups of steric effect or electronic effect to modify micro structure. In this way, the molecules would exhibit higher molar absorption coefficient, stronger intramolecular charge transfer (ICT) and more excellent carrier mobility, which further enhance its fluorescence intensity and quantum yield.
Moreover, the application of photoelectric devices provides a horde of convenience in our daily life. On the basis of published molecules in the field of liquid crystals (LCs) and organic light emitting diodes (OLEDs), our group takes effort to extend its technique by modifying molecular structure with chiral molecules and aggregation-induced luminescence, which promise a bright future to 3D display and circularly polarized luminescent devices.
1. Conjugated luminescent fluorescence chemical sensing system based on chiral polymer
2. Luminescent properties of rare earth polymer complexes and their chiral complexes
3. Chirality- or AIE-modified polymer polarized luminescence materials and bioluminescence probe
4. Near-infrared luminescent materials of energy-controllable conjugated polymer
5. Liquid crystals(LCs) based on aggregation-induced luminescence (AIE) and circularly polarized luminescence (CPL)
6. Organic light emitting diodes (OLEDs) based on thermal active delay fluorescent (TADF) and circularly polarized luminescence (CPL)