Hyperbranched polymer-cored star polyfluorenes as blue light-emitting materials

Synthesis and energy transfer in original poly(3-alkylthiophene)-g-poly(fluorene) toothbrush copolymers

“…The majority of the reported polymers are (hyper)branched conjugated polymers. [1][2][3][4][5][6][7][8] There are some reports of conjugated graft copolymers and only one about a conjugated star copolymer. [9][10][11][12][13] Whereas conjugated graft copolymers already represent a very interesting architecture, the topology can be made even more advanced by adding a linear non-grafted segment to the backbone in order to form toothbrush (co)polymers.…”

Strategies toward Controlling the Topology of Nonlinear Poly(thiophenes)

“…The (hyper)branched conjugated polymers are not just an academic curiosity, but offer a whole new range of properties and therefore applications compared to their linear counterparts. [14][15][16][17][18][19][20][21] In addition, they suffer less from insolubility and 1D anisotropy related problems. 22,23 Also for light-emitting devices the performance can be improved using the branched counterparts as a result of their in general worse stacking.…”

“…For graft, miktoarm, and star conjugated polymers, reports are even more scarce. − Apart from branched conjugated polymers, there are also reports of branched conjugated oligomers and dendrimers. − However, for the former the polymeric nature is not fully exploited, while synthesis of the latter is very time-consuming and therefore restricted to small amounts. The (hyper)­branched conjugated polymers are not just an academic curiosity but offer a whole new range of properties and therefore applications compared to their linear counterparts. − In addition, they suffer less from insolubility and 1D anisotropy related problems. , Also, for light-emitting devices the performance can be improved using the branched counterparts as a result of their in general worse stacking. Although nonlinear conjugated polymers offer a whole new range of opportunities their synthesis is challenging, and most of the synthetic methods for the reported (hyper)­branched polymers do not offer a control over the degree of nonlinearity .…”

Influence of branching on the chiral self‐assembly of poly(phenylene ethynylene)

“…For conjugated polymers we could think of solar cell applications . They are also very promising as active materials for light‐emitting devices as they are more stable, have better solubility, and do not suffer as much from aggregate‐based fluorescence quenching as their linear counterparts . Some even show aggregation‐induced emission .…”