Glass Transition Temperatures of Individual Submicrometer Atmospheric Particles: Direct Measurement via Heated Atomic Force Microscopy Probe.

The phase (solid, semisolid, or liquid) of atmospheric aerosols is central to their ability to take up water or undergo heterogeneous reactions. In recent years, the unexpected prevalence of viscous organic particles has been shown through field measurements and global atmospheric modeling. The aerosol phase has been predicted using glass transition temperatures (Tg), which were estimated based on molecular weight, oxygen:carbon ratio, and chemical formulae of organic species present in atmospheric particles via studies of bulk materials. However, at the most important sizes for cloud nucleation (∼50-500 nm), particles are complex mixtures of numerous organic species, inorganic salts, and water with substantial particle-to-particle variability. To date, direct measurements of Tg have not been feasible for individual atmospheric particles. Herein, nanothermal analysis (NanoTA), which uses a resistively heated atomic force microscopy (AFM) probe, is combined with AFM photothermal infrared (AFM-PTIR) spectroscopy to determine the Tg and composition of individual particles down to 76 nm in diameter at ambient temperature and pressure. Laboratory-generated proxies for organic aerosol (sucrose, ouabain, raffinose, and maltoheptaose) had similar Tg values to bulk Tg values measured with differential scanning calorimetry (DSC) and the Tg predictions used in atmospheric models. Laboratory-generated phase-separated particles and ambient particles were analyzed with NanoTA + AFM-PTIR showing intraparticle variation in composition and Tg. These results demonstrate the potential for NanoTA + AFM-PTIR to increase our understanding of viscosity within submicrometer atmospheric particles with complex phases, morphologies, and compositions, which will enable improved modeling of aerosol impacts on clouds and climate.

Coping with COVID-19: Survey data assessing psychological distress to COVID-19 and vaccine hesitancy with measures of theory of planned behavior, mindfulness, compassion, cultural orientation, and pandemic fatigue.

As the COVID-19 pandemic extends into another year, the causes and consequences of pandemic fatigue and vaccine hesitancy have become prominent concerns. This dataset contains MTurk survey responses from 658 vaccinated USA samples indicating: (a) pandemic fatigue and psychological distress (physical and trauma symptoms); (b) delays in receiving medical care due to COVID-19 restrictions; (c) vaccine-related behavior and beliefs (type of vaccine and vaccine hesitancy), and (d) COVID-19 preventive health behaviors. Several predictor variables were also collected including: (a) demographic variables; (b) COVID-19 health risk factors; (c) perceived susceptibility to disease and intolerance of uncertainty; (d) attitudes, subjective norms and perceived behavioral control about COVID-19 vaccine from the theory of planned behavior; (e) compassion for self and others; (f) psychological flexibility and inflexibility; (g) Buddhist mindfulness insight (impermanence, acceptance of suffering, nonself attachment, mindfulness); and (h) cultural orientation and authoritarianism. The data were collected between August 28th and October 18th of 2021. Out of the 746 MTurk workers who responded to the survey, 88 were removed from the dataset due to failing attention checks and problems with quality data. The responses from the remaining 658 allow an examination of the associations between fatigue and distress from COVID-19; COVID-19 vaccine related behaviors and beliefs; preventive health behaviors for COVID-19; COVID-19 susceptibility; intolerance of uncertainty; together with compassion, psychological flexibility, mindfulness, cultural orientation, as well as authoritarianism as possible moderators of COVID-19 fatigue, distress, and vaccine beliefs.

Older and wiser: age differences in susceptibility to investment fraud: the protective role of emotional intelligence.

There have been inconsistent results regarding whether older adults are more vulnerable to fraud than younger adults. The two main goals of this study were to investigate the claim that there is an age-related vulnerability to fraud and to examine whether emotional intelligence (EI) may be associated with fraud susceptibility. Participants (N = 281; 18-82 years; M = 53.4) were recruited via Amazon's Mechanical Turk and completed measures of EI, decision-making, and scam susceptibility. Participants who scored higher on "ability" EI were less susceptible to scams. The "younger" group (M = 2.50, SD = 1.06) was more susceptible to scams than the "older" group, p <.001, d = 0.56, while the "older" group (M = 4.64, SD = 1.52) reported the scams as being more risky than the "younger" group, p =.002, d = 0.37. "Older" participants were more sensitive to risk, less susceptible to persuasion, and had higher than average emotional understanding. Emotional understanding was found to be a partial mediator for age-related differences in scam susceptibility and susceptibility to persuasion.

The History of Palladium-Catalyzed Cross-Couplings Should Inspire the Future of Catalyst-Transfer Polymerization.

Conjugated polymers are the workhorse materials in organic electronics, a field that is rapidly growing to encompass energy storage devices such as supercapacitors and batteries. The highest-performing materials today have incredibly diverse structures and are accessed via step-growth polymerizations. This method results in limited control over the polymer's molecular weight, sequence, and dispersity, all of which can significantly impact device performance. The discovery of catalyst-transfer polymerization (CTP) in 2004 was predicted to change this landscape. Instead, nearly 14 years later, the CTP scope remains mostly limited to polymerizing small, electron-rich monomers. There is a pronounced gap between the rich array of structures utilized in organic electronics and what can be polymerized in a living, chain-growth fashion via CTP. Here, we suggest that palladium precatalysts could bridge this gap based on their huge versatility in the small-molecule cross-coupling literature. We highlight specific ancillary ligands from the small-molecule literature that we anticipate are candidates for enabling diverse conjugated polymer syntheses based on nearly a decade of research into the CTP mechanism. In addition, we describe several recent promising examples of CTP mediated by Pd precatalysts that serve as inspiration for the future. We present this Perspective as a call-to-action to advance organic electronics with CTP.