Hsiang-Yun Chen

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Control over polymer sequence and architecture is crucial to both understanding structure-property relationships and designing functional materials. In pursuit of these goals, we developed a new synthetic approach that enables facile manipulation of the density and distribution of grafts in polymers via living ring-opening metathesis polymerization (ROMP).(More)
To examine the quenching of a triplet exciton by low triplet energy (E(T)) polymer hosts with different chain configurations for high E(T) phosphor guests, the quenching rate constant measurements were carried out and analyzed by the standard Stern-Volmer equation. We found that an effective shielding of triplet energy transfer from a high E(T) phosphor(More)
Grafting density is an important structural parameter that exerts significant influences over the physical properties of architecturally complex polymers. In this report, the physical consequences of varying the grafting density (z) were studied in the context of block polymer self-assembly. Well-defined block polymers spanning the linear, comb, and(More)
1 Previous analyses 1.1 Huang and Liu on LDR ziji Long-distance ziji is of interest to linguists for its peculiar behavior: it does not always obey Binding Condition A as stated in the Binding Theory. Some authors, for example, Huang and Liu (2001) argue that there are two uses of the bare reflexive ziji: one as a syntactic anaphor subject to Binding(More)
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