荧光基础(五)-Lifetime & Anisotropy - 知乎 (zhihu.com) §1.3 Kasha's Rule & anti-Kasha's Rule 在第一节中我们已经讲述了荧光发生的基本过程:吸收,弛豫,发射,再弛豫。物理学家Kasha揭示了这样一个经验规则: 分子荧光的发射光谱与激发光波长无关。 这一描述实际上是由下面的微观原理导出的: 荧光往往从分...
Anti-Kasha’ ruleRewritable paperStimuli-responsive fluorescence switches have aroused enormous interest due to their wide prospects in dealing with safety, health, energy, etc. However, most stimuli-responsive fluorescent switches usually follow the Kasha's rule and are static responsive, which cannot ...
Zikai He 2 , Guangxi Huang 1 , Bing Shi Li 1 & Ben Zhong Tang 3 Anti-Kasha's process in organic luminogens has attracted many attentions since its discovery. However, only limited examples of anti-Kasha's rule have been reported and anti-Kasha triplet energy transfer (ET) is even less...
Water-stimuli-responsive dynamic fluorescent switch from Kasha's rule to anti-Kasha's rule based on a tetraphenylethene substituted Schiff base Stimuli-responsive fluorescence switches have aroused enormous interest due to their wide prospects in dealing with safety, health, energy, etc. However, m....
The real name of the murdered drug lord was Parvis Kashavarz Omarabadi. So who did the two Canadians kill in Dubai if not Cetin Koc? Omarabadi? Someone else? Another twist in the story is a massive corruption scandal involving the Turkish judiciary, which has throw a wrench in ...
To have some of Kanu’s former members like Kasha Ho join the Center for Food Safety is quite an odd match in that they perpetuate the complete opposite message. Ulupono is also interesting in that they tout high tech for energy sources but then support and fund old ways of farming like ...
anti-Kasha ruleanti-counterfeitingAchieving tunable emissions spanning the spectrum, from blue to near‐infrared (NIR) light, within a single component is a formidable challenge with significant implication, particularly in tailoring multicolor luminescence for anti‐counterfeiting purposes. In this study, ...
Kasha's rule, which states that all exciton emissions occur from the lowest excited state and are independent of excitation energy, makes high-energy excitons difficult to use and severely hinders the widespread applications of organic photoluminescent materials in the real world. For decades, ...
Herein, we have successfully synthesized a stable chlorine‐substituted Chichibabin's hydrocarbon, TTM‐TTM, along with its mono‐radical counterpart, TTM‐HTTM. The emission of TTM‐TTM follows Kasha's rule in the near infrared region. However, TTM‐HTTM shows dual channe...
The violation of the Kasha photoemission rule in organic molecules has intrigued chemists since their discovery, being always of relevance given its connection with unique electronic properties of molecules. However, an understanding of the molecular structure鈥揳nti-Kasha property relationship in organic ...