螢光量子缺陷之近期發展與展望

Recent Developments and Prospects of Fluorescent Quantum Defects

林妍諠(Yen-Hsuan Lin) ； 李林洋(Lin-Yung Lee) ； 孫翰笙(Han-Sheng Sun) ； 林靖衛(Ching-Wei Lin)

《化學》 79卷4期 (2021/12) Pp. 339-362

https://doi.org/10.6623/chem.202112_79(4).010

摘要

螢光量子缺陷特指發光的奈米碳管缺陷，其得以讓奈米碳管側壁進行化學修飾並保持其螢光性質，這個特性使得許多以往無法達成或是不慎理想的應用如感測和標靶變為可能。舉例來說，奈米碳管作為活體螢光探針必須依賴非共價鍵結與標靶模體結合，但這些表面包覆物在進入血流後往往被蛋白質取代，進而阻礙標靶的效力，而螢光量子缺陷提供的共價鍵結解決了此一問題。再者，螢光量子缺陷為唯一的室溫電信波長單光子發射器，而單光子光源為以光子為基礎的量子電腦通訊必要元素之一。在這篇文獻回顧中，我們將介紹螢光量子缺陷的基礎光物理性質、統整所有種類的量子缺陷、列舉重要的應用以及闡述螢光量子缺陷的未來。

關鍵字

短波紅外 ； 單壁奈米碳管 ； 螢光量子缺陷 ； 有機色中心

並列摘要

Fluorescent quantum defects are fluorescent defects in the semiconducting carbon nanotube (SWCNT) hosts. Fluorescent quantum defects allow the chemical modifications on the SWCNT side walls while keeping their fluorescence properties. This enables numerous applications such as sensing and targeting that were not possible or not ideal in the past. For example, SWCNT as in vivo fluorescent probe relied on the non-covalent conjugation of the SWCNTs to the targeting motifs, but these surface coatings were usually displaced by the proteins in the blood stream, hampering the targeting efficacy. The fluorescent quantum defects allow conjugations of these motifs through covalent bonds, thus solving this critical issue. In addition, fluorescent quantum defects are the only room-temperature single photon emitters at telecom wavelength. Single photon source is one of the essential components for photonic-based quantum computing/ communications. In this review, we will describe the fundamental photophysical properties of fluorescent quantum defects, summarize all types of fluorescent quantum defects, list important applications, and illustrate the future of fluorescent quantum defects.

並列關鍵字

Short-wave infrared ； Single-walled carbon nanotubes ； Fluorescent quantum defects ； Organic color center