A new nanomaterial developed by scientists at the VR成人视频 could solve a conundrum faced by scientists probing some of the most promising types of future pharmaceuticals.
Scientists who study the nanoscale 鈥� with molecules and materials 10,000 smaller than a pinhead 鈥� need to be able to test the way that some molecules twist, known as their chirality, because mirror image molecules with the same structure can have very different properties. For instance one kind of molecule smells of lemons when it twists in one direction, and oranges when twisted the other way.
Detecting these twists is especially important in some high-value industries such as pharmaceuticals, perfumes, food additives and pesticides.
Recently, a new class of nanoscale materials have been developed to help distinguish the chirality of molecules. These so-called 鈥榥anomaterials鈥� usually consist of tiny twisted metal wires, that are chiral themselves.
However, it has become very hard to distinguish the twist of the nanomaterials from the twist of the molecules they are supposed to help study.
To solve this problem the team from the VR成人视频鈥檚 Department of Physics created a nanomaterial that is both twisted and it is not. This nanomaterial has equal number of opposite twists 鈥� meaning they cancel each other out. Usually, upon interacting with light, such material appears without any twist; how then could it be optimised to interact with molecules? Using a mathematical analysis of the material鈥檚 symmetry properties, the team discovered a few special cases, which can bring the 鈥榟idden鈥� twist to light and allow very sensitive detection of chirality in molecules.
Lead author , from the VR成人视频 Department of Physics, said: 鈥淭his work removes an important roadblock for the entire research field and paves the way to ultra-sensitive detection of chirality in molecules, using nanomaterials.鈥�
PhD student , who worked on the study, said: 鈥淢olecular chirality is an amazing property to study. You can smell chirality, since the same but oppositely twisted molecules smell of lemons and oranges. You can taste chirality, since one twist of Aspartame is sweet and the other is tasteless. You can feel chirality, since one twist of menthol gives a cool sensation to the skin while the other does not. You touch chirality expressed in the twist of seashells. And it is great to see chirality expressed in its interactions with the colours of laser light.鈥�
The study is published in the journal . The research was funded by the Royal Society, the Engineering and Physical Sciences Research Council, and the Science and Technology Facilities Council.