Ting Xu
Lawrence Berkeley National Laboratory
MicelleBiophysicsNanoparticleCopolymerSmall moleculeNanotechnologyChemistryNanostructurePolymer chemistryThin filmMaterials scienceHelix bundlePeptideChemical engineeringNanoscopic scalePolymerAmphiphileCrystallographyNanocompositeSupramolecular chemistry
Publications 193
#1Banruo Huang (University of California, Berkeley)H-Index: 3
#2Mufeng Wei (University of California, Berkeley)H-Index: 1
Last. F. Dean Toste (University of California, Berkeley)H-Index: 132
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Materials capable of degradation upon exposure to light hold promise in a diverse range of applications including biomedical devices and smart coatings. Despite the rapid access to macromolecules with diverse compositions and architectures enabled by ring-opening metathesis polymerization (ROMP), a general strategy to introduce facile photodegradability into these polymers is lacking. Here, we report copolymers synthesized via ROMP that can be degraded by cleaving the backbone in both solution a...
#1Christopher DelRe (LBNL: Lawrence Berkeley National Laboratory)H-Index: 4
#2Boyce S. Chang (University of California, Berkeley)H-Index: 13
Last. Ting Xu (LBNL: Lawrence Berkeley National Laboratory)H-Index: 42
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Embedding catalysts inside of plastics affords accelerated chemical modification with programmable latency and pathways. Nanoscopically embedded enzymes can lead to near-complete degradation of polyesters via chain-end mediated processive depolymerization. The overall degradation rate and pathways have a strong dependence on the morphology of semicrystalline polyesters. Yet, most studies to date focus on pristine polymers instead of mixtures that contain additives and other components despite th...
#1Emma Vargo (University of California, Berkeley)H-Index: 1
#2Katherine Evans (University of California, Berkeley)H-Index: 3
Last. Ting Xu (LBNL: Lawrence Berkeley National Laboratory)H-Index: 42
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Ring-shaped nanostructures can focus, filter, and manipulate electromagnetic waves, but are challenging to incorporate into devices using standard nanofabrication techniques. Directed self-assembly (DSA) of block copolymers (BCPs) on lithographically patterned templates has successfully been used to fabricate concentric rings and spirals as etching masks. However, this method is limited by BCP phase behavior and material selection. Here, a straightforward approach to generate ring-shaped nanopar...
#1Le Ma (LBNL: Lawrence Berkeley National Laboratory)H-Index: 2
#2Hejin Huang (MIT: Massachusetts Institute of Technology)H-Index: 7
Last. Yi Liu (LBNL: Lawrence Berkeley National Laboratory)H-Index: 66
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Although significant progress has been made in the self-assembly of nanostructures, present successes heavily rely on precision in building block design, composition, and pair interactions. These requirements fundamentally limit our ability to synthesize macroscopic materials where the likelihood of impurity inclusion escalates and, more importantly, to access molecular-to-nanoscopic-to-microscopic-to-macroscopic hierarchies, since the types and compositions of building blocks vary at each stage...
#2Jeffrey A. Reimer (University of California, Berkeley)H-Index: 66
#3Wendy L. Queen (École Polytechnique)
Last. Jeffrey B. Kortright (LBNL: Lawrence Berkeley National Laboratory)H-Index: 35
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#2Alessandra Da Silva (University of Birmingham)H-Index: 2
#3Emmy Yu (University of California, Berkeley)
Last. Ting Xu (University of California, Berkeley)H-Index: 42
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Orthogonal to guided growth of nanoparticle (NP) crystals using DNA or supramolecules, a trace amount of polymeric impurities (<0.1 wt.%) leads to reproducible, rapid growth of 3D NP crystals in solution and on patterned substrates with high yield. When polymers preferentially precipitate on the NP surfaces, small NP clusters form and serve as nuclei for NP crystal growth in dilute solutions. This precipitation-induced NP crystallization process is applicable for a range of polymers, and the res...
#1Christopher DelRe (University of California, Berkeley)H-Index: 4
#2Yufeng Jiang (University of California, Berkeley)H-Index: 16
Last. Ting Xu (University of California, Berkeley)H-Index: 42
view all 14 authors...
Successfully interfacing enzymes and biomachinery with polymers affords on-demand modification and/or programmable degradation during the manufacture, utilization and disposal of plastics, but requires controlled biocatalysis in solid matrices with macromolecular substrates1–7. Embedding enzyme microparticles speeds up polyester degradation, but compromises host properties and unintentionally accelerates the formation of microplastics with partial polymer degradation6,8,9. Here we show that by n...
#1Jingyu Huang (University of California, Berkeley)H-Index: 9
#2Aaron Hall (University of California, Berkeley)H-Index: 5
Last. Ting XuH-Index: 42
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The polymer chain architecture is an important factor determining the phase behavior of nanoparticle (NP) assembly in polymer matrices. Block copolymers (BCPs) containing a random copolymer (RCP) b...
#1Benson T. Jung (University of California, Berkeley)H-Index: 5
#2Marc Lim (University of California, Berkeley)H-Index: 2
Last. Ting Xu (LBNL: Lawrence Berkeley National Laboratory)H-Index: 42
view all 7 authors...
Abstract Biological constraints in diseased tissues have motivated the need for small nanocarriers (10–30 nm) to achieve sufficient vascular extravasation and pervasive tumor penetration. This particle size limit is only an order of magnitude larger than small molecules, such that cargo loading is better described by co-assembly processes rather than simple encapsulation. Understanding the structural, kinetic, and energetic contributions of carrier-cargo co-assembly is thus critical to achieve m...
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