stimulus responsive
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2022 ◽  
Vol 124 ◽  
pp. 107218
Author(s):  
Zhongyu Yang ◽  
Long Chen ◽  
David Julian McClements ◽  
Chao Qiu ◽  
Cuicui Li ◽  
...  

2022 ◽  
Vol 9 ◽  
Author(s):  
Yoshika Takewaki ◽  
Takuji Ogawa ◽  
Yosuke Tani

Modulating the stimulus-responsiveness of a luminescent crystal is challenging owing to the complex interdependent nature of its controlling factors, such as molecular structure, molecular conformation, crystal packing, optical properties, and amorphization behavior. Herein, we demonstrate a halogen-exchange approach that disentangles this problem, thereby realizing the modulation of room-temperature phosphorescence-to-phosphorescence mechanochromism. Replacing the bromine atoms in a brominated thienyl diketone with chlorine atoms afforded isostructural crystals; i.e., molecules with different halogen atoms exhibited the same molecular conformation and crystal packing. Consequently, amorphization behavior toward mechanical stimulation was also the same, and the phosphorescence of amorphous states originated from the same conformer of each diketone. In contrast, the phosphorescence properties of each conformer were modulated differently, which is ascribable to heavy atom effects, resulting in the modulation of the mechanochromism. Thus, halogen exchange is a promising approach for modulating the stimulus-responsive photofunctions of crystals involving spin-forbidden processes.


Author(s):  
Zhaoyu Zhang ◽  
Qiuhong Li ◽  
Ning Sun ◽  
Yunxiao Liu ◽  
Shujin Ge ◽  
...  

2022 ◽  
Author(s):  
Yumiko Naka ◽  
Satoshi Arai ◽  
Yusuke Ohgi ◽  
Minami Takahashi ◽  
Khoa V. Le ◽  
...  

Viologens that are useful as stimulus-responsive compounds and exhibit a low-order liquid-crystalline (LC) phase at relatively low temperatures (approximately 20 °C), can be developed into materials that combine the redox...


2021 ◽  
pp. 181-215
Author(s):  
Sourabh Mehta ◽  
Nadim Ahamad ◽  
Mahima Dewani ◽  
Prateek Bhardwaj ◽  
Rinti Banerjee
Keyword(s):  

Pharmaceutics ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2070
Author(s):  
Pan Liang ◽  
Linshen Mao ◽  
Yanli Dong ◽  
Zhenwen Zhao ◽  
Qin Sun ◽  
...  

Liposomes are attractive carriers for targeted and controlled drug delivery receiving increasing attention in cancer photothermal therapy. However, the field of creating near-infrared nanomaterial-liposome hybrid nanocarriers (NIRN-Lips) is relatively little understood. The hybrid nanocarriers combine the dual superiority of nanomaterials and liposomes, with more stable particles, enhanced photoluminescence, higher tumor permeability, better tumor-targeted drug delivery, stimulus-responsive drug release, and thus exhibiting better anti-tumor efficacy. Herein, this review covers the liposomes supported various types of near-infrared nanomaterials, including gold-based nanomaterials, carbon-based nanomaterials, and semiconductor quantum dots. Specifically, the NIRN-Lips are described in terms of their feature, synthesis, and drug-release mechanism. The design considerations of NIRN-Lips are highlighted. Further, we briefly introduced the photothermal conversion mechanism of NIRNs and the cell death mechanism induced by photothermal therapy. Subsequently, we provided a brief conclusion of NIRNs-Lips applied in cancer photothermal therapy. Finally, we discussed a synopsis of associated challenges and future perspectives for the applications of NIRN-Lips in cancer photothermal therapy.


Author(s):  
Ni Tan ◽  
Zui Ding ◽  
Can Chen ◽  
Yincheng Yang ◽  
Leqing He ◽  
...  
Keyword(s):  

2021 ◽  
pp. 134410
Author(s):  
Xiaolin Nie ◽  
Shuanglin Wu ◽  
Pengfei Lv ◽  
Huizhen Ke ◽  
Fenglin Huang ◽  
...  

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