<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article  PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="3.0" xml:lang="en" article-type="research article"><front><journal-meta><journal-id journal-id-type="publisher-id">NAT</journal-id><journal-title-group><journal-title>Hans Journal of Nanotechnology</journal-title></journal-title-group><issn pub-type="epub">2161-086X</issn><publisher><publisher-name>Scientific Research Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.12677/NAT.2023.1328</article-id><article-id pub-id-type="publisher-id">NAT-65341</article-id><article-categories><subj-group subj-group-type="heading"><subject>NAT20230200000_55195819.pdf</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>化学与材料</subject></subj-group></article-categories><title-group><article-title>
 
 
  一种新型水相人工光捕获体系的构筑
   The Fabrication of a Novel Aqueous Artificial LightHarvesting System
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>李</surname><given-names>梦行</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>邹</surname><given-names>雅欣</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>王</surname><given-names>佳丽</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>范</surname><given-names>晓艳</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>朱</surname><given-names>金丽</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>汤</surname><given-names>艳峰</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>孙</surname><given-names>广平</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib></contrib-group><aff id="aff2"><addr-line>南通大学化学化工学院，江苏 南通</addr-line></aff><aff id="aff1"><addr-line>null</addr-line></aff><pub-date pub-type="epub"><day>16</day><month>05</month><year>2023</year></pub-date><volume>13</volume><issue>02</issue><fpage>51</fpage><lpage>58</lpage><permissions><copyright-statement>&#169; Copyright  2014 by authors and Scientific Research Publishing Inc. </copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/</license-p></license></permissions><abstract><p>
 
 
  本文设计合成了一种新型2-羟基苄基苯胺类衍生物(HPA)作为客体分子，通过与水溶性柱[5]芳烃(WP5)主客体作用，在水中形成超分子两亲体WP5⊃HPA，超分子两亲体进一步自组装形成WP5⊃HPA纳米粒子，并对染料分子磺基罗丹明101 (SR101)进行包载形成WP5⊃HPA-SR101纳米粒子。由于WP5HPA的荧光发射区域与SR101的紫外吸收有效重叠，在包载SR101后，成功构筑了一种新型水相WP5⊃HPA-SR101人工光捕获体系。值得注意的是，WP5⊃HPA-SR101的能量转移效率为48.4%，天线效应为7.8，在水相人工光捕获系统中具有潜在的应用价值。
   A novel salicylideneaniline derivative (HPA) was initially synthesized as guest molecules. After host-guest interaction with water-soluble pillar [5] arene (WP5), the formed WP5⊃HPA supramolecular amphiphile further as-sembled into nanoparticles and sulforhodamine 101 (SR101) could be encapsulated to fabricate WP5⊃HPA-SR101 nanoparticles. Because the emission region of WP5⊃HPA covers well with the UV-Vis absorption of SR101, a significant artificial light-harvesting process could take place in WP5⊃HPA-SR101 nanoparticles, which perform the energy transfer efficiency of 48.4% and the antenna effect of 7.8, suggesting potential applications in aqueous artificial light-harvesting sys-tems.
 
</p></abstract><kwd-group><kwd>人工光捕获，主客体作用，超分子组装，能量转移，天线效应,  Artificial Light-Harvesting</kwd><kwd> Host-Guest Interaction</kwd><kwd> Supramolecular Assembly</kwd><kwd> Energy Transfer</kwd><kwd> Antenna Effect</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>摘要</title><p>本文设计合成了一种新型2-羟基苄基苯胺类衍生物(HPA)作为客体分子，通过与水溶性柱[<xref ref-type="bibr" rid="hanspub.65341-ref5">5</xref>]芳烃(WP5)主客体作用，在水中形成超分子两亲体WP5&#201;HPA，超分子两亲体进一步自组装形成WP5&#201;HPA纳米粒子，并对染料分子磺基罗丹明101 (SR101)进行包载形成WP5&#201;HPA-SR101纳米粒子。由于WP5&#201;HPA的荧光发射区域与SR101的紫外吸收有效重叠，在包载SR101后，成功构筑了一种新型水相WP5&#201;HPA-SR101人工光捕获体系。值得注意的是，WP5&#201;HPA-SR101的能量转移效率为48.4%，天线效应为7.8，在水相人工光捕获系统中具有潜在的应用价值。</p></sec><sec id="s2"><title>关键词</title><p>人工光捕获，主客体作用，超分子组装，能量转移，天线效应</p></sec><sec id="s3"><title>The Fabrication of a Novel Aqueous Artificial Light-Harvesting System<sup> </sup></title><p>Menghang Li, Yaxin Zou, Jiali Wang, Xiaoyan Fan, Jinli Zhu, Yanfeng Tang, Guangping Sun<sup>*</sup></p><p>School of Chemistry and Chemical Engineering, Nantong University, Nantong Jiangsu</p><p>Received: Mar. 31<sup>st</sup>, 2023; accepted: May 5<sup>th</sup>, 2023; published: May 16<sup>th</sup>, 2023</p></sec><sec id="s4"><title>ABSTRACT</title><p>A novel salicylideneaniline derivative (HPA) was initially synthesized as guest molecules. After host-guest interaction with water-soluble pillar [<xref ref-type="bibr" rid="hanspub.65341-ref5">5</xref>] arene (WP5), the formed WP5&#201;HPA supramolecular amphiphile further assembled into nanoparticles and sulforhodamine 101 (SR101) could be encapsulated to fabricate WP5&#201;HPA-SR101 nanoparticles. Because the emission region of WP5&#201;HPA covers well with the UV-Vis absorption of SR101, a significant artificial light-harvesting process could take place in WP5&#201;HPA-SR101 nanoparticles, which perform the energy transfer efficiency of 48.4% and the antenna effect of 7.8, suggesting potential applications in aqueous artificial light-harvesting systems.</p><p>Keywords:Artificial Light-Harvesting, Host-Guest Interaction, Supramolecular Assembly, Energy Transfer, Antenna Effect</p><disp-formula id="hanspub.65341-formula1"><graphic xlink:href="//html.hanspub.org/file/1-1290210x5_hanspub.png?20230517093359268"  xlink:type="simple"/></disp-formula><p>Copyright &#169; 2023 by author(s) and Hans Publishers Inc.</p><p>This work is licensed under the Creative Commons Attribution International License (CC BY 4.0).</p><p>http://creativecommons.org/licenses/by/4.0/</p><p><img src="//html.hanspub.org/file/1-1290210x6_hanspub.png?20230517093359268" /> <img src="//html.hanspub.org/file/1-1290210x7_hanspub.png?20230517093359268" /></p></sec><sec id="s5"><title>1. 引言</title><p>受自然界绿色植物对太阳能利用的启发，科研人员尝试构筑各种各样的人工光捕获系统来模拟自然界光捕获过程对光能进行捕获与利用，比如凝胶材料 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref1">1</xref>] 、聚合物 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref2">2</xref>] 、卟啉系统 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref3">3</xref>] 、金属有机框架材料 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref4">4</xref>] 等。然而，已报道的人工光捕获系统大多是通过共价键合成进行构筑，且大多在有机相中进行能量转移，这些都限制了人工光捕获在生命系统中的应用与发展 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref5">5</xref>] 。近年来，超分子组装策略不仅能够有效避免复杂的合成与纯化过程，还能在水相中进行组装与构建，在人工光捕获领域显示出巨大的应用潜力 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref6">6</xref>] 。2016年，刁国旺教授团队利用水溶性柱[<xref ref-type="bibr" rid="hanspub.65341-ref5">5</xref>]芳烃(WP5)成功构筑了一个叶绿素–类胡萝卜素超分子结构，在水相中实现了太阳能的捕获与光催化应用 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref7">7</xref>] 。此外，2017年，刘育教授团队通过磺酸盐环糊精(SCD)和聚集诱导发光(AIE)衍生物也构筑了一个水相人工光捕获体系，并获得了超高的天线效应 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref8">8</xref>] 。同样是利用AIE衍生物，2020年，王乐勇教授团队基于WP5和四苯乙烯衍生物(TPEDA)也构筑了一个水相人工光捕获体系，并实现了光捕获能量的连续传递 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref9">9</xref>] 。因此，在水相中开发并构筑新型人工光捕获体系对太阳能的捕获和应用具有重要意义。</p><p>图1. 水相人工光捕获系统</p><p>为此，本文设计合成了一种新型2-羟基苄基苯胺类衍生物(HPA)作为客体分子，水溶性柱[<xref ref-type="bibr" rid="hanspub.65341-ref5">5</xref>]芳烃(WP5)作为主体分子，通过主客体相互作用，HPA与WP5在水中络合形成WP5&#201;HPA超分子两亲体，超分子两亲体进一步自组装形成WP5&#201;HPA纳米粒子作为能量给体。由于WP5&#201;HPA的荧光发射区域与染料分子磺基罗丹明101 (SR101)的紫外吸收有效重叠，在包载SR101 (能量受体)后，WP5&#201;HPA的能量能够被显著转移至SR101，最终获得WP5&#201;HPA-SR101水相人工光捕获体系(图1)。</p></sec><sec id="s6"><title>2. 实验部分</title><sec id="s6_1"><title>2.1. 试剂与仪器</title><p>水杨醛(98%)，磺基罗丹明101 (95%, SR101)，三聚甲醛(98%)，溴乙酸乙酯(98%)，碳酸钾(99%)，氢氧化钠(97%)，三氟化硼/乙醚(98%)，1,10-二溴癸烷(98%)和三溴化硼(99%)购自安耐吉化学；乙酸乙酯(AR)，石油醚(AR)，乙醇(AR)和甲醇(AR)购自泰坦试剂；核磁测试采用瑞士Bruker 400 MHz；扫描电镜(SEM)采用日本Hitachi SU8060；粒径测试(DLS)采用美国Brookhaven BI-9000AT；紫外测试采用日本UV-3600；荧光测试采用日本Hitachi F-7000。</p></sec><sec id="s6_2"><title>2.2. 化合物合成</title><sec id="s6_2_1"><title>2.2.1. WP5合成</title><p>WP5根据我们之前报道的工作进行合成与表征 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref10">10</xref>] ‎[<xref ref-type="bibr" rid="hanspub.65341-ref11">11</xref>] 。</p></sec><sec id="s6_2_2"><title>2.2.2. HPA合成</title><p>图2. 化合物HPA合成路线</p><p>图3. 化合物HPA氢谱图</p><p>化合物1合成：化合物1根据我们之前报道工作进行合成与表征 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref12">12</xref>] 。</p><p>化合物HPA合成：如图2、图3、图4所示，将化合物1 (100 mg, 0.26 mmol)与水杨醛(38 mg, 0.31 mmol)加入25 mL乙醇中，室温搅拌过夜。最后将混合物离心，乙醇洗涤3次，固体产物真空干燥得目标产物HPA (126 mg, 0.26 mmol, 99%)。<sup>1</sup>HNMR (400 MHz, DMSO-d<sub>6</sub>) δ (ppm): 13.33 (s, 1 H), 8.95 (s, 1 H), 7.63 (dd, J = 7.6, 1.2 Hz, 1 H), 7.43~7.37 (m, 3 H), 7.02~6.94 (m, 4 H), 4.01 (t, J = 6.4 Hz, 2 H), 3.28~3.24 (m, 2 H), 3.03 (s, 9 H), 1.75~1.63 (m, 4 H), 1.44~1.39 (m, 2 H), 1.30~1.25 (m, 10 H)。<sup>13</sup>CNMR (100 MHz, DMSO-d<sub>6</sub>) δ (ppm): 161.6, 160.6, 158.4, 141.0, 133.3, 132.8, 123.1, 119.8, 119.6, 117.0, 115.6, 68.2, 65.7, 52.6, 52.6, 52.5, 29.4, 29.2, 29.1, 29.0, 26.2, 26.0, 22.5。</p><p>图4. 化合物HPA碳谱图</p></sec></sec></sec><sec id="s7"><title>3. 结果与讨论</title><sec id="s7_1"><title>3.1. 主客体相互作用</title><p>在合成WP5与HPA后，分别通过丁达尔效应和荧光实验对主客体之间相互作用进行研究分析。如图5所示，单独的HPA溶液没有丁达尔效应，且无明显的荧光发射，说明单独HPA在水中较难自组装形成纳米粒子。而当加入WP5后，WP5&#201;HPA有明显的丁达尔效应，且能够发射出绿色荧光，说明在WP5的作用下，HPA能够有效自组装形成WP5&#201;HPA纳米粒子。</p><p>图5. 丁达尔效应：(a) HPA；(b) WP5&#201;HPA和(c) WP5&#201;HPA-SR101；荧光照片：(d) HPA；(e) WP5&#201;HPA和(f) WP5&#201;HPA-SR101</p></sec><sec id="s7_2"><title>3.2. 最佳络合比与临界聚集浓度</title><p>在确认WP5与HPA能够有效发生主客体作用并自组装形成纳米子后，分别通过紫外光谱对主客体作用形成纳米粒子的最佳络合比与临界聚集浓度(CAC)进行测试分析 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref13">13</xref>] 。如图6所示，单独的HPA溶液(20:0)在550 nm处透射率约为97%，几乎没有纳米粒子产生，与丁达尔效应结果一致。但是随着WP5的增加，混合溶液透射率逐渐降低，当摩尔比为20:1时，透射率最低，说明此时产生纳米粒子最多。此后，随着WP5继续增加，混合溶液透射率并没有继续降低，反而增加，说明WP5与HPA主客体作用形成纳米粒子的最佳络合比为20:1。</p><p>图6. (a) WP5与HPA混合溶液透射率；(b) 混合溶液在550 nm处透射率</p><p>在测得WP5与HPA的最佳络合比为20:1后，保持摩尔比不变，继续测试不同浓度的透射率变化(HPA浓度从0.01 mM到0.10 mM)，并根据550 nm处透射率变化作图分析。如图7所示，在低浓度时，透射率变化不是很大，但是当浓度达到0.031 mM后，透射率会迅速下降，说明WP5与HPA的临界聚集浓度为0.031 mM。</p><p>图7. (a) WP5与HPA混合溶液透射率(HPA浓度：0.01 mM~0.10 mM)；(b) 混合溶液在550 nm处透射率</p></sec><sec id="s7_3"><title>3.3. 纳米粒子构筑</title><p>在得到WP5与HPA的最佳络合比和临界聚集浓度后，分别对其组装的纳米粒子进行粒径和形貌研究。如图8所示，WP5与HPA在水中自组装可以形成粒径为241 nm的圆形粒子。此外，SR101作为传统的疏水性染料，可以被包载于WP5&#201;HPA的疏水层处，形成WP5&#201;HPA-SR101纳米粒子 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref10">10</xref>] ‎[<xref ref-type="bibr" rid="hanspub.65341-ref12">12</xref>] 。值得注意的是，在包载SR101后，WP5&#201;HPA-SR101纳米粒子的粒径显著增大，但依然是圆形粒子。</p><p>图8. 粒径分布：(a) WP5&#201;HPA和(b) WP5&#201;HPA-SR101；扫描电镜：(c) WP5&#201;HPA和(d) WP5&#201;HPA-SR101</p></sec><sec id="s7_4"><title>3.4. WP5&#201;HPA-SR101人工光捕获系统</title><p>由于WP5&#201;HPA的荧光发射区域与SR101的紫外吸收有效重叠(图9(a))，且在包载SR101后，供体(HPA)与受体(SR101)之间的距离被显著缩短，因此在WP5&#201;HPA-SR101中可以发生高效的荧光共振能量转移过程，实现人工光捕获 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref14">14</xref>] 。如图9(b)所示，随着SR101的增加，HPA的荧光强度逐渐减弱，而SR101的荧光逐渐增强，说明供体的能量被显著转移到受体上，实现高效的人工光捕获。同时荧光颜色也相应的由绿色向红色进行转变，进一步证明发生了人工光捕获过程(图10)。</p><p>图9. (a) 归一化紫外吸收与荧光发射图和(b) 能量转移荧光光谱</p><p>图10. 能量转移荧光照片</p></sec><sec id="s7_5"><title>3.5. WP5&#201;HPA-SR101人工光捕获性能</title><p>为了进一步探究WP5&#201;HPA-SR101纳米粒子的人工光捕获性能，通过荧光光谱分别对其能量转移效率与天线效应进行测试分析 ‎[<xref ref-type="bibr" rid="hanspub.65341-ref15">15</xref>] ‎[<xref ref-type="bibr" rid="hanspub.65341-ref16">16</xref>] ‎[<xref ref-type="bibr" rid="hanspub.65341-ref17">17</xref>] 。如图11所示，根据WP5&#201;HPA在包载SR101后的荧光淬灭变化，可以得到WP5&#201;HPA-SR101的能量转移效率为48.4%；同时根据WP5&#201;HPA在525 nm处的归一化计算以及WP5&#201;HPA-SR101纳米粒子在365 nm和550 nm激发下的荧光光谱，测得WP5&#201;HPA-SR101的天线效应为7.8，说明WP5&#201;HPA-SR101具有较好的人工光捕获能力，为水相人工光捕获系统的开发提供了一定的借鉴与参考。</p><p>图11. (a) 能量转移和(b) 天线效应</p></sec></sec><sec id="s8"><title>4. 结论</title><p>通过主客体作用，WP5与HPA首先在水中络合形成WP5&#201;HPA超分子两亲体，超分子两亲体进一步自组装形成纳米粒子并对SR101进行包载，成功开发了一种新型WP5&#201;HPA-SR101水相人工光捕获体系。实验结果表明，在WP5&#201;HPA-SR101中，HPA (供体)能量能够被显著转移到SR101 (受体)，实现水相人工光捕获过程，能量转移效率与天线效应分别为48.4%和7.8，为水相人工光捕获系统的开发提供了参考与借鉴。</p></sec><sec id="s9"><title>基金项目</title><p>江苏省自然科学基金青年项目(No. BK20220601)，江苏省高等学校基础科学(自然科学)研究面上项目(No. 22KJB150032)，江苏省大学生创新创业训练计划项目(No. 202210304100Y)。</p></sec><sec id="s10"><title>文章引用</title><p>李梦行,邹雅欣,王佳丽,范晓艳,朱金丽,汤艳峰,孙广平. 一种新型水相人工光捕获体系的构筑 The Fabrication of a Novel Aqueous Artificial LightHarvesting System[J]. 纳米技术, 2023, 13(02): 51-58. https://doi.org/10.12677/NAT.2023.1328</p></sec><sec id="s11"><title>参考文献</title></sec></body><back><ref-list><title>References</title><ref id="hanspub.65341-ref1"><label>1</label><mixed-citation publication-type="other" xlink:type="simple">Ji, L., Sang, Y., Ouyang G., Yang, D., Duan, P., Jiang, Y. and Liu, M. 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