مشخصات پژوهش

صفحه نخست /Shape-Memory Effect Triggered ...
عنوان Shape-Memory Effect Triggered by π–π Interactions in a Flexible Terpyridine Metal–Organic Framework
نوع پژوهش مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها Shape-memory polymers
چکیده Shape-memory polymers and alloys are adaptable materials capable of reversing from a deformed, metastable phase to an energetically favored original phase in response to external stimuli. In the context of metal− organic frameworks, the term shape-memory is defined as the property of a switchable framework to stabilize the reopened pore phase after the first switching transition. Herein we describe a novel flexible terpyridine MOF which, upon desolvation, transforms into a nonporous structure that reopens into a shape-memory phase when exposed to CO2 at 195 K. Based on comprehensive in situ experimental studies (SC-XRD and PXRD) and DFT energetic considerations combined with literature reports, we recommend dividing shape-memory MOFs into two categories, viz responsive and nonresponsive, depending on the transformability of the gas-free reopened pore phase into the collapsed phase. Furthermore, considering the methodological gap in discovering and understanding shape-memory porous materials, we emphasize the importance of multicycle physisorption experiments for dynamic open framework materials, including metal−organic and covalent organic frameworks.
پژوهشگران امانول پریالا (نفر ششم به بعد)، آجنیسزکا جانیاک (نفر ششم به بعد)، لئونارد باربور (نفر ششم به بعد)، استفان کاسکل (نفر ششم به بعد)، ولدیمار بون (نفر ششم به بعد)، قدرت محمودی (نفر ششم به بعد)، لوکا آندریو (نفر پنجم)، آلسیا گیوندرا (نفر چهارم)، فلیپ فرمالیک (نفر سوم)، ویکتوریا گروملسکا (نفر دوم)، کرنل روزتوسکی (نفر اول)