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Creeping landslides may fail catastrophically, posing significant threats to infrastructure and lives. Landslides weaken over time through rock mass damage processes that may occur by steady‐state creep or transient accelerations of slip, called creep bursts. Creep bursts may control landslide stability by inducing short‐term damage and strain localization. This study focuses on the Åknes landslide in Norway, which moves up to 6 cm per year and could potentially trigger a large tsunami in the fjord below. An 11‐year data set is compiled and analyzed, including kinematic, seismic, and hydrogeological data acquired at the landslide surface and in a series of boreholes. An annual average of two creep bursts with millimeter amplitude has been recorded within the shear zone in each borehole, accounting for approximately 11% of the total displacement. Creep bursts detected simultaneously in multiple boreholes are preceded by increased seismic activity and rising water pressure. However, most creep bursts are observed in only one or a few boreholes. These bursts often happen during seasonal high and low groundwater levels in autumn and spring, respectively, correlating with local peaks in water pressure. No such correlation is observed during summer. We propose that creep bursts can have different causes and hypothesize that rock degradation leads to some creep bursts independent of water pressure variations. In contrast, the largest creep bursts are correlated with variations in absolute water pressure or gradients of water pressure within the shear zone. Our findings emphasize the complexity of a dense data set requiring multiple mechanisms to explain creep burst dynamics. Plain Language Summary: Slow‐moving landslides, advancing from millimeters to meters per year, can have strong destruction potential if they fail catastrophically. A landslide sliding plane weakens over time by rock crushing and fracturing. One of these processes is short‐lived movement accelerations that we call creep bursts. Creep bursts may control landslide stability by inducing short‐term damage and the development of a plane that allows the landslide to slide, which may lead to catastrophic failure. This study focuses on the Åknes landslide in Norway, which moves at 6 cm per year and could potentially trigger a great tsunami in the fjord below. Creep bursts with millimeter movements are detected at the landslide's sliding plane. Some creep bursts occur without water pressure changes at the initiation of the motion. These bursts are likely caused by the gradual crushing of the rock mass, independent of water level fluctuations. Conversely, the largest creep bursts are correlated with seasonal variations in groundwater level within the landslide. These larger bursts may be related to an easing of sliding by the absolute or the water pressure gradient. Our data set provides quantitative insights into transient slip accelerations, and these accelerations may be crucial in driving a large‐scale failure of the Åknes landslide. Key Points: We detected creep bursts on the shear zone of the Åknes landslide that accommodated 11% of the total displacementThe largest creep bursts are preceded by increased water pressure and microseismicity in the shear zoneMost of the creep bursts occur randomly over the year without correlation with other environmental parameters [ABSTRACT FROM AUTHOR]

A ruthenium nitrosyl complex of formula [RuII(fluorene(C6)CH2O-terpy)(bipy)(NO)]3+ (AC) in which fluorene(C6) is the 9,9-dihexylfluorene, terpy the 2,2′;6′,2′′-terpyridine, and bipy the 2,2′-bipyridine is presented with its related [RuII(MeO-terpy)(bipy)(NO)]3+ (C) and 9,9-dihexylfluorene 2-hydroxymethylfluorene (A) building blocks. The reference complex C undergoes NO release capabilities under irradiation at λ = 365 nm. The effect of the introduction of the fluorescent A antenna within the resulting AC complex is discussed both experimentally and theoretically. The importance of the encaging parameter defined as φAC·IAC, in which IAC is the quantity of light absorbed by AC and φAC the quantum yield of NO release is evidenced and found to be concentration dependent. The conditions of optimization of the antenna approach to maximize φAC·IAC are discussed. The crystal structure of [RuII(fluorene(C6)CH2O-terpy)(bipy)(NO2)](PF6), the last intermediate in the synthesis of AC is also presented. [ABSTRACT FROM AUTHOR]

Ruthenium nitrosyl (RuNO) complexes continue to attract significant research interest due to several appealing features that make these photoactivatable nitric oxide (NO˙) donors attractive for applications in photoactivated chemotherapy. Interesting examples of molecular candidates capable of delivering cytotoxic concentrations of NO˙ in aqueous media have been discussed. Nevertheless, the question of whether most of these highly polar and relatively large molecules are efficiently incorporated by cells remains largely unanswered. In this paper, we present the synthesis and the chemical, photophysical and photochemical characterization of RuNO complexes functionalized with 17α-ethinylestradiol (EE), a semisynthetic steroidal hormone intended to act as a molecular Trojan horse for the targeted delivery of RuNO complexes. The discussion is centered around two main molecular targets, one containing EE (EE-Phtpy-RuNO) and a reference compound lacking this biological recognition fragment (Phtpy-RuNO). While both complexes displayed similar optical absorption profiles and NO˙ release efficiencies in aqueous media, important differences were found regarding their cellular uptake towards dermal fibroblasts, with EE-Phtpy-RuNO gratifyingly displaying a remarkable 10-fold increase in cellular uptake when compared to Phtpy-RuNO, thus demonstrating the potential drug-targeting capabilities of this biomimetic steroidal conjugate. [ABSTRACT FROM AUTHOR]