本文選題：PDA/PS + PDA/PDMS��； 參考：《中國(guó)科學(xué)技術(shù)大學(xué)》2017年碩士論文

【摘要】：聚二乙炔(PDA)材料因其準(zhǔn)一維共軛的高分子骨架具有獨(dú)特的環(huán)境響應(yīng)性,在光波導(dǎo)、光電傳感、仿生學(xué)等領(lǐng)域具有廣泛的應(yīng)用前景。本論文工作主要分為兩部分:聚二乙炔/聚苯乙烯(PDA/PS)靜電紡絲微纖維陣列模擬昆蟲(chóng)復(fù)眼自然感桿束結(jié)構(gòu)及聚二乙炔/聚二甲基硅氧烷(PDA/PDMS)微纖維用作柔性傳感器。大多數(shù)昆蟲(chóng)眼睛的視覺(jué)色素是二向色性的(即根據(jù)其極化軸不同吸收不同的光),這賦予了他們?cè)谔炜罩畜@人的導(dǎo)航能力。在過(guò)去的幾年中,有大量的研究集中在人造生物光學(xué)系統(tǒng),包括"復(fù)眼"數(shù)碼相機(jī)和人工復(fù)眼等,然而關(guān)于制造昆蟲(chóng)復(fù)眼的感光細(xì)胞---偏振敏感的人工感桿束的研究還很少。文中我們制造了PDA/PS靜電紡絲微纖維,證明PDA/PS微纖維表現(xiàn)出極強(qiáng)的極化波導(dǎo)特性,這個(gè)現(xiàn)象依賴于PDA主鏈在纖維內(nèi)的有序排列,且與傳播距離或激發(fā)光的波長(zhǎng)無(wú)關(guān)。此外,三根具有不同極化波導(dǎo)行為的PDA/PS微纖維可以組裝在一起來(lái)模仿昆蟲(chóng)眼睛的自然感桿束陣列,單根PDA/PS微纖維的物理尺寸,結(jié)構(gòu),功能可與自然感桿相媲美。傳感器被譽(yù)為人的感官,我們現(xiàn)在的生活已經(jīng)離不開(kāi)它,但是現(xiàn)有傳感器因材料本身性質(zhì)的限制,不能被任意塑型,所以柔性傳感器成為當(dāng)今的熱門(mén)研究領(lǐng)域。微纖維因其具有體積小、質(zhì)量輕、靈敏度高等優(yōu)點(diǎn),相比于傳統(tǒng)的傳感器,更易微型化、集成化和分布式感知,在電子皮膚、生物醫(yī)藥、可穿戴設(shè)備、航空航天等領(lǐng)域都將有廣泛應(yīng)用。聚二甲基硅氧烷(PDMS)易于在空氣的界面上濃縮,使得材料有疏水的自保護(hù)涂層,可用于生產(chǎn)纖維。我們?cè)O(shè)計(jì)了一種摻雜PDA的PDMS纖維,在不同的拉力條件下,其極化波導(dǎo)特性會(huì)隨之改變,拉伸長(zhǎng)度越長(zhǎng),其熒光極化程度越大,且極化方向發(fā)生變化,為柔性光傳感器件制備提供了基礎(chǔ)。
[Abstract]:Poly (diacetylene) PDAs have a wide range of applications in optical waveguide, photoelectric sensing, bionics and other fields because of their unique environmental response due to their quasi-one-dimensional conjugated polymer framework. The work of this thesis is divided into two parts: Poly (diacetylene / polystyrene PDA-PS) electrospinning microfiber array simulates the structure of insect compound eye natural sensing rod and polydiacetylene / polydimethylsiloxane (PDA / PDMS) microfiber is used as flexible sensor. The visual pigments of most insect eyes are dichromatic (that is, they absorb different light according to their polarized axis, which gives them amazing navigation ability in the sky. In the past few years, a great deal of research has been focused on artificial biological optical systems, including "compound eye" digital camera and artificial compound eye. However, few studies have been done on the photosensitive cells of insect compound eye-polarization-sensitive artificial sensing rod bundle. In this paper, we have fabricated PDA/PS electrospun microfibers, which proves that PDA/PS microfibers exhibit extremely strong polarization waveguide characteristics, which depends on the ordered arrangement of the main chains of PDA in the fibers and is independent of the propagation distance or the wavelength of excited light. In addition, three PDA/PS microfibers with different polarization waveguides can be assembled together to mimic the natural rod array of insect eyes. The physical size, structure and function of a single PDA/PS microfiber are comparable to those of the natural sensing rod. Sensors are regarded as human senses, and our life is inseparable from them. However, due to the limitation of material properties, the existing sensors can not be shaped arbitrarily, so flexible sensors have become a hot research field. Because of its advantages of small size, light weight and high sensitivity, microfiber is easier to be miniaturized, integrated and distributed than traditional sensors, in electronic skin, biomedicine, wearable devices, etc. Aerospace and other fields will have a wide range of applications. Poly (dimethylsiloxane) (PDMS) is easy to concentrate at the interface of air, which makes the material have hydrophobic self-protective coating, which can be used to produce fiber. We have designed a kind of PDMS fiber doped with PDA. Under different tension conditions, the characteristics of polarized waveguide will change. The longer the stretching length, the greater the fluorescence polarization degree and the polarization direction. It provides a basis for the fabrication of flexible optical sensor devices.
【學(xué)位授予單位】：中國(guó)科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TQ340.64

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本文編號(hào)：1895506