An ideal stimuli-responsive controlled/living radical polymerization should have the ability to manipulate the reaction through spatiotemporal "on/off" controls, achieving the polymerization under fully open conditions and allowing for precise control over macromolecular architecture with defined molecular weights and monomer sequence. In this contribution, the photo (sunlight)-induced electron transfer atom transfer radical-polymerization (PET-ATRP) can be realized to be reversibly activated and deactivated under fully open conditions utilizing one-component copper(II) thioxanthone carboxylate as multifunctional photocatalyst and oxygen scavenger. The polymerization behaviors are investigated, presenting controlled features with first-order kinetics and linear relationships between molecular weights and monomer conversions. More importantly, "CuAAC&ATRP" concurrent reaction combining PET-ATRP, photodriven deoxygenation, and photoactivated CuAAC click reaction is successfully employed to synthesize the sequence-defined multiblock functional copolymers, in which the iterative monomer additions can be easily manipulated under fully open conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/marc.201700511 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Aim: To understand how Black or African American women living with HIV (WLH) experience different types of stigma in their daily lives.
Design: Secondary analysis of quantitative and qualitative data from a recent clinical trial in Baltimore, Maryland.
Methods: Quantitative data were collected in the baseline survey, and qualitative data were gathered during 6-month follow-up focus group and individual interviews.
The big potassium (BK) channels remain open with a small limiting probability of ∼ 10 at minimal Ca and negative voltages < -100 mV. The molecular origin and functional significance of such "intrinsic opening" are not understood. Here we combine atomistic simulations and electrophysiological experiments to show that the intrinsic opening of BK channels is an inherent property of the vapor barrier, generated by hydrophobic dewetting of the BK inner pore in the deactivated state.
View Article and Find Full Text PDFDrought drives selection for earlier flowering, while pollinators drive selection for larger flowers in annual .
AoB Plants
January 2025
Department of Biology, 10 Bailey Drive, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
Drought-induced changes in floral traits can disrupt plant-pollinator interactions, influencing pollination and reproductive success. These phenotypic changes likely also affect natural selection on floral traits, yet phenotypic selection studies manipulating drought remain rare. We studied how drought impacts selection to understand the potential evolutionary consequences of drought on floral traits.
View Article and Find Full Text PDFBackground And Aim: Managing benign biliary stricture endoscopically is complicated and challenging. This study aimed to evaluate the safety and efficacy of a 6-month placement of a fully covered self-expanding metallic stent for refractory benign biliary stricture.
Methods: Twenty-two patients with refractory benign biliary stricture (13 with chronic pancreatitis and 9 without) were recruited from five higher tertiary care centers.
Association of Preoperative Cartilage T1ρ Values With Progression of Knee Osteoarthritis 10 Years After Anatomical Double-Bundle ACL Reconstruction: Follow-up of a Previous Prospective Study.
Orthop J Sports Med
January 2025
Center for Preventive Medical Sciences, Chiba University, Chiba, Japan.
Background: The factors contributing to osteoarthritis progression after anterior cruciate ligament (ACL) injury and reconstruction (ACLR) are not fully understood. Quantitative magnetic resonance imaging (MRI) offers a noninvasive way to evaluate cartilage biochemical composition using T1ρ mapping, thereby detecting early cartilage degeneration. The specific impact of preoperative quantitative MRI on long-term outcomes after ACLR remains underreported.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!